Abstract:A kind of fundamental mixer integrated circuit design under thick GaAs substrate is introduced by coplanar waveguide transmission line. The I-U and C-U curves are measured by a semiconductor, and the Schottky diode model is successfully extracted. Schottky diode is modeled and the Lange coupler, Intermediate Frequency(IF) circuit and match network are designed in zero-IF 140 GHz fundamental mixer on-chip circuit. Simulation results show that under a fixed intermediate frequency of 1 GHz, the best conversion loss is 7 dB, and 3 dB bandwidth is greater than 40 GHz.

Abstract:To overcome slow leaking problems of the Micro-Crystalline Diamond(MCD) window, a study on an extremely thin composite diamonds for the windows of the Terahertz(THz) wave Traveling Wave Tubes(TWTs) is presented. The composite diamond is prepared by Microwave Plasma Chemical Vapor Deposition(MPCVD) method. To reinforce the mechanical properties and air tightness, MCD is deposited incorporated with Ultra-Nano-Crystalline Diamond(UNCD). A 100 μm thick composite film is designed and fabricated. The fracture strengths of the composite films with thin layers of UNCD are 2-3 times higher than those of the MCD films. The results of the leak test show the maximum leak rate of the windows is less than 1×10-10 Pa?m3/s. 180 GHz and 220 GHz TWT composite diamonds windows are assembled. Results of the Radio Frequency(RF) tests of the two windows show that S11≤-15 dB(in range of 10 GHz) and S11≤ -10 dB(in range of 20 GHz) respectively, indicating a good RF performance. This work provides a novel approach for the fabrication of extremely thin diamond windows for THz TWTs.

Abstract:At present, the frequency spectrum resources in the microwave band are becoming increasingly scarce. The exploration of the terahertz band has provided new ideas for solving this problem. Terahertz technology is widely used in many fields, such as communications, radar and imaging. Terahertz mixer is a critical device in the terahertz transceiver system. Therefore, the study of terahertz mixer is very important. A 330 GHz sub-harmonic mixer based on GaAs planar Schottky diode is presented. An integrated design method is utilized. And a co-simulation in High Frequency Structure Simulator(HFSS) and Advanced Design System(ADS) is implemented. The circuit discontinuity is characterized by the simulation results of HFSS. The characteristics of the circuit transmission and the nonlinear characteristics of the diode are characterized by ADS simulation results. By optimizing the transmission line parameters, the purpose of optimizing the circuit is realized. This method increases the optimization range and reduces the design difficulty. Simulated results show that conversion loss of this mixer is less than 8 dB from 300 GHz to 350 GHz.

Abstract:Novel mesa-type GaAs-based Blocked-Impurity-Band(BIB) detectors that can respond to the terahertz frequency have been fabricated. The key fabrication technology and the device structure are introduced in detail. Metal-Organic Chemical Vapor Deposition(MOCVD) is utilized to grow the absorption layer and the barrier layer. Low temperature testing system has been constructed and the characteristics of background response current have been investigated. At a test temperature of 3.4 K, after applying voltages scanning from -5 V to 5 V to the device, the response current has magnitude from 10-2 A to 10-6 A under 300 K background environment. In low current region, the slope of the current is relatively large. In high current area, however, the slope of the current becomes relatively small. According to the testing results, the photoelectric transport mechanisms of GaAs-based BIB detector are analyzed.

Abstract:A reflective polarization converter constructed by a layer of rectangle metal pattern, an ultrathin polyimide substrate, and a layer of metal reflector are introduced. To lower the sensitivity to the thickness of the substrate and increase the working bandwidth, the method of broadening and truncating the metallic wire grid of traditional polarization converter is proposed, which introduces the equivalent capacity and the equivalent inductance of two orthogonal linearly polarized incident electromagnetic waves, so the phases are modulated separately. The simulation result suggests that at 500 GHz, the working bandwidth is about 140 GHz, the insert loss is less than 0.5 dB; and while the thickness error of the polyimide substrate is within a due range, the performance of the polarization converter would keep stable. The designed converter efficiently lowers the sensitivity to the thickness of the substrate and increases the working bandwidth, besides, a flexible thin-film photoetching method is proposed for the process of the polarization converter.

Abstract:A deceptive jamming method based on convolution technique is proposed in order to implement effective image deception jamming for low frequency ultra wideband Synthetic Aperture Radar(SAR). Based on the SAR target echo characteristic, analytic formula of the modulation function is derived. The approximate processing is required when the jamming signal generated. For a low frequency ultra wideband SAR, the echo signal is strongly coupled because of the wide beam. Considering the usual imaging algorithm used in ultra wideband SAR, the jamming modulation function is accurate to the cubic phase. And the coefficients of each term are analyzed and simplified. Finally, two simulation examples are given to show the necessity of improvement and the effectiveness of the jamming technology. Both the theoretical analysis and simulation results show that the improved method can effectively implement the false image jamming for ultra wide band SAR.

Abstract:With rapid development of communication technology and the way of communication, the modulation type of communication signal and communication system become more and more complex. Due to the high spectrum utilization rate, Continuous-Phase Frequency Shift Keying(CPFSK) is widely used in satellite communication. Considering parameters estimation of CPFSK, an algorithm of CPFSK modulation index estimation is studied based on Lyapunov exponent. With the mathematical relationship between Lyapunov exponent and modulation index, modulation index is estimated by extracting Lyapunov exponent, and the performance is simulated by modulation index Root Mean Square Error(RMSE) vs. Signal-to-Noise Ratio(SNR) curves. With low complexity, this algorithm can be applied to CPFSK and common Frequency Shift Keying(FSK) signal.

Abstract:A novel Ground Moving Target Indication(GMTI) algorithm is presented to detect slow moving targets by using the range walk migration in single-antenna synthetic aperture radar. Two filters，which differ only in signs of phase responses, are utilized to change the range walk migration rates of the echo after the range compression, and two images are generated therewith. In the two images, stationary targets have the same range walk migration rates after the filtering; nevertheless, the range walk migration rates of the moving targets are different. Therefore, moving targets can be indicated by the complex subtraction of the two images. Simulations are conducted to prove that slow moving targets which are submerged by the clutter can be detected by the proposed algorithm.

Abstract:Dual-source jamming is an effective monopulse radar jamming method. The jamming effect is analyzed under the condition of single echo. But in the actual situation, pulse accumulation is utilized in signal processing which would affect the phase between the dual-source jammers and finally affect the dual-source jamming effect. Simulation analysis indicates the deception angle of monopulse radar under dual-source jamming fluctuates in some range instead of keeping stable.

Abstract:A new G-type structure of tri-band antenna is designed. It is suitable for individual combat devices and 3G/4G communication network. The antenna working frequency bands cover GSM, 3GTDD and IEEE 802.11a with 1.805-1.820 GHz, 1.880-1.900 GHz, and 5.725-5.850 GHz, respectively. This designed art can be applied to multi-band communication system, especially to the individual combat, as well as to the 3G/4G network. Very good quality of this antenna is obtained, such as light weight, small size, low profile and easy manufacture, etc.

Abstract:An antenna geometry design method of Multiple-Input Multiple-Output(MIMO) radar based on D-optimality Criterion(DOBC) is proposed in order to minimize Mean Square Error(MSE) of the estimations. Firstly, the constraints of DOBC designs are derived; then, the sensitivity properties of the DOBC designs are analyzed, which are only affected by the separation of the targets and are independent of the azimuth of targets; the Cramer-Rao Lower Bound(CRLB) of the estimations in the far field condition is also deduced. DOBC criteria can be looked as the modified CRLB and provides a tighter bound for performance measure of the Maximum Likelihood Estimate(MLE) algorithm. Simulation results demonstrate that compared with minimum redundancy arrays and uniform arrays, DOBC designs have better performance in parameter estimation. Furthermore, it is not restricted by the array aperture. As the aperture increases, the resolution will be improved and the spurious peaks will become higher at the same time, which will result in a very large error in the DOA estimation with low SNR. Therefore, an appropriate aperture must be chosen according to the physical requirements.

Abstract:Information entropy is an important technology to measure information of the signal. Considering the Digital Radio Frequency Memory(DRFM) jamming detection for pulse compression radar, a method of DRFM jamming detection based on information theory is proposed, by exploiting diversity of distribution between target signals and jamming. Using the information entropy of the echo as the detection statistic, the binary jamming detector is designed to detect the DRFM jamming. Simulation results validate the feasibility and effectiveness of the proposed method. While the RSN is above 0 dB, the DRFM jamming detection probability is up to 0.9 for pulse compression waveforms, such as phased code and Linear Frequency Modulation(LFM).

Abstract:A design of 4-channel wide band wave generation based on the Line Replaceable Module (LRM) framework is presented. The card integrates a high performance FPGA and 4 Digital Analog Converter(DAC) chips. The DAC and FPGA connect each other by the Low Voltage Differential Signaling (LVDS) interface. The input and output interface of the board utilizes a 2nd generation LRM connector. The DAC sampling rate is 4 Gsps. The instantaneous bandwidth is up to 1.2 GHz at 2.4 GHz Intermediate Frequency(IF) output, and the Signal-to-Noise Ratio(SNR) is better than 50 dB. It can be applied to the radar EW and the wideband digital receiver.

Abstract:Unmanned Aerial Vehicle(UAV)-borne Synthetic Aperture Radar(SAR) has the characteristics of high mobility and high viability on battlefield．It is one of the important surveillance and reconnaissance measures in future warfare relying on advanced radar imaging technology of SAR and reconnaissance ability on all weathers and all days of UAV．The SAR task is affected by the flight planning and flight attitude of the UAV, and the various missions have lots of differences, scheduling would be restricted and inefficient. The purpose of mission electronic system is to provide scientific decision-making references for mission dispatch of UAV-borne SAR．The structure of mission electronic system and mission dispatch method are introduced, and the constraints in linear programming of mission management are established．The flight tests have demonstrated the reasonableness and effectiveness of the system．

Abstract:Conformal antenna array can be utilized to receive the incoming signal for passive radar seeker in multimode compound guidance mode. Generally，conformal antenna is in linear polarization， surrounded by the elastomer，which will lead to polarization diversity. The receiving signals model of conformal antenna array is built. The effects of antenna polarization diversity on the interferometer direction finding performance are studied. The precondition of interferometer method getting right result is analyzed. Finally，the effectiveness of conclusion is verified by the computational simulation results. This paper gives an idea which will make PRS get right direction finding result，to solve the polarization diversity of conformal antenna array.

Abstract:Because of the good “four resistances” capabilities, non-cooperative reconnaissance and positioning systems based on radar emitters have become a research hotspot in the field of electronic warfare. Nevertheless, the characteristics of the space-time frequency of non-cooperative radiation sources are unknown, and then it brings a series of technical problems that need to be solved. Some key technologies such as radiation source reconnaissance guidance, system time-scale extraction and weak signal processing, are studied based on the principle of non-cooperative reconnaissance and positioning technology. The engineering prototype is completed as well. The engineering feasibility of non-cooperative reconnaissance positioning technology can be verified by the results of the field test.

Abstract:For the problem of ignoring the horizontal inhomogeneous characteristics of evaporation duct in the research of radio system performance, the non-reciprocity of evaporation duct on the condition of horizontal inhomogeneous environment is discussed. The non-uniformity characteristics are studied by the simulation of Markov process. Radio transmission losses are calculated by parabolic equation method. The impacts of radar electromagnetic parameters on non-reciprocity are analyzed. Simulation results show that the radio non-reciprocity cannot be ignored in the horizontal inhomogeneous evaporation duct environment, the effects on non-reciprocity of antenna height and frequency are great. The larger the antenna height and the radio frequency, the stronger the non-reciprocity.

Abstract:The quiet zone test method for compact range is described and the test results are obtained. According to the quiet zone test results, the planar wave spectrum analysis is conducted and the analysis results are given, based on which, the Ku band reflector compact range test result is improved. The update progresses in compact range test technology are presented. This research project is part of antenna metrology technology―in compact range test field―cooperated with National Institute of Metrology. This work explores the metrology test of antenna performance and antenna test range performance.

Abstract:A novel satellite-based Automatic Identification System(AIS) antenna is proposed. The design is based on Inverted-F antenna, and M shape is utilized to achieve the miniaturization intention. The dimension of this AIS antenna is only 324 mm(L)?60 mm(W) ?263.2 mm(H). The CST MICROWAVE STUDIO is adopted for the optimized design, and performance test of the antenna element and radiating mockup is performed with the spherical near-field antenna measurements system. Simulation and measured results verify the performance of the proposed antenna, which can meet the application requirement of satellite AIS system.

Abstract:The excitation signal type and cycle selection are important factors affecting Transient Electromagnetic Method(TEM) system detection ability. Using the time-domain finite element integration method to simulate different excitation signals, through the contrast and analysis of the transmitter coil magnetic field distribution characteristics and magnetic focusing effect in the same depth, the excitation signal types can be determined. For the detection depth and sensitivity depending on the excitation signal cycle, the minimum period of the excitation signal is determined. Taking the minimum period as the lower limit, the simulation is carried out in different cycles, and the receiving coil of the echo effect diagram and the magnetic flux change curves of equivalent depth are obtained. Comparison and analysis are conducted to determine the appropriate cycle. The conclusion is that the rectangular pulse with 500 ms is more suitable as excitation signal, and is helpful to magnetic field energy focusing and the depth of propagation. Finally, the steel plates with different thicknesses are simulated, and the relationships between the echo signal and the thickness of steel plate are analyzed. This work can provide a theoretical basis for the practical transient electromagnetic detection system.

Abstract:The battlefield electromagnetic environment is important for a battlefield, and its complexity plays an important role in operational decision and operational command for combat commander. A hierarchical classification evaluation method of battlefield electromagnetic environment complexity is established, which is suitable for different combat command levels based on the analysis of operational requirements of battlefield electromagnetic environment complexity. The evaluation index on electromagnetic environment complexity and corresponding characterization methods are put forward.

Abstract:A novel Fabry-Perot Resonant Antenna(FPRA) is proposed，which utilizes a multi-layer dielectric superstrate to enhance its gain and aperture efficiency. This multilayer superstrate is fabricated by assembling several dielectric plates with different thicknesses and areas. This FPRA works at 5.8 GHz，employs a patch antenna as its feed，and assembles three Teflon plates with different thicknesses(1 mm,1 mm and 1.5 mm) and diameters(160 mm,130 mm and 120 mm) but a same relative permittivity of 16 to be its superstrate. A prototype is fabricated and measured. The measurement results agree well with the simulation ones, and show，in comparison with the commonly adopted single-layer superstrate，the proposed multi-layer superstrate improves the F–P resonant antenna’s gain from 18.2 dBi to 19.1 dBi at 5.8 GHz，correspondingly enhances the aperture efficiency from 70.02% to 86.14%, additionally，slightly increases the antenna’s |S11|<-10 dB impedance bandwidth and 3 dB gain bandwidth，which are 8.19% and 11.90% respectively.

Abstract:Analyzing the working principle of traditional lens antenna can know the electric mode between metal plates is similar to that of waveguide. A new metal lens antenna is designed through changing the distance between metal plates and changing the heights of ridge. It is different from traditional metal lens antenna with concave surface structure. This metal lens antenna is composed of a plurality of rectangular metal plates with ridge on the side. This new lens antenna can adjust the aperture to make the phase distribution consistent, and therefore it can obtain high gain characteristic.

Abstract:Considering the feature of buildings in high resolution Synthetic Aperture Radar(SAR) images, an algorithm for extracting buildings from SAR image based on multi-scale information fusion is proposed. Taking the Non-Subsampled Contourlet Transform(NSCT) as multi-scale analysis framework, a multi-scale fusion segmentation method is proposed to extract the potential building regions. An edge detection method based on multi-scale data fusion is designed to extract the edge information. The results of multi-scale fusion segmentation and edge detection are combined to filter the false alarm and add the missing buildings. Experimental results show that the proposed method achieves better performance than the building detection algorithm based on feature fusion, and the average recall ratio reached 94% in the experimental images. These results prove the efficiency of the proposed approach.

Abstract:For obtaining direct sound component effectively to analyze real characteristics of the underwater explosion source, a marking algorithm is proposed, which utilizes the local correlation peak to identify the direct sound. The evaluation function for the algorithm result is established. Based on underwater explosion experiments in the shallow water, the reasonability of this algorithm is initially verified by comparing with results through the ray theory, and further the frequency spectrum analysis is performed on the optimal direct sound interval(width about 1.8 ms) acquired by this algorithm through Hilbert-Huang Transform(HHT). The results indicate that: the sequence of the direct sound pressure level has a high autocorrelation and the corresponding relative array feature can keep stable approximately in the short range; this algorithm can bring good local correlation peaks and identify the direct sound components clearly, especially in the very short propagation range, with the correlation peaks even over 0.9; the main frequency band of the used explosion source is stable around 0-10 kHz, with the peak frequency of 1 kHz approximately, but when the propagation range is relatively longer, the corresponding spectrum profile will be influenced by the sound speed distribution significantly.

Abstract:The estimation accuracy of the subspace algorithm has dropped off because the effective bandwidth has reduced under the condition of single snapshot. The accuracy of the compressed sensing algorithm has declined because of the similar sparse structure under the condition of multiple snapshots. To deal with the weak robustness of existing algorithms，a high-performance time delay estimation algorithm is presented based on compressed sensing subspace under both conditions. The proposed algorithm derives the relationship between the multipath number and the number of snapshots. An improved noise subspace has been reconstructed. The polynomial is applied to estimate time delay. The polynomial rooting avoids the spectral peak searching and reduces the computational complexity. Simulation results show that the proposed algorithm has a high performance and a better robustness compared with subspace algorithms and compressed sensing algorithms.

Abstract:Vehicle applications makes the requirements on Vehicle-to-Roadside(V2R) communication quality and system throughput more and more higher. V2R communication power allocation strategy is proposed to improve the quality of communication links and the system throughput. The strategy adopts the game theory to analyze the power allocation process and find out the optimal allocation scheme. When the utility function reaches Nash equilibrium through iterations, it indicates that the system has obtained the optimal power allocation scheme. Simulation results show that the proposed power allocation strategy is helpful to reduce the interference between communication links, and the purpose of improving the system throughput is achieved.

Abstract:In the field of image processing, dictionary learning and the mapping from Low-Resolution (LR) image to High-Resolution(HR) image are two important components of image Super-Resolution(SR) algorithms based on sparse representation theory. Due to the rich and varied image types, a single dictionary does not represent the image very well. And the strict equaling to the mapping between LR and HR images also limits the image reconstruction effect. From above two aspects, more inclusive multi-dictionary and the more relaxed coupled dictionary sparse learning algorithms are adopted to perform SR reconstruction of the image. First of all, the method performs multiple adaptive clustering on the basis of non-local self similarity of images in this paper. Secondly, the optimal clustering is selected, and the dictionary is got by the coupling dictionary sparse learning algorithm. Finally, the input LR images are classified and reconstructed to obtain HR images. The experimental results show that Peak Signal to Noise Ratios(PSNRs) of image Leaves, Barbara and Room with the proposed clustering algorithm is higher than that with original sparse learning algorithm by 0.51 dB, 0.21 dB, 0.15 dB respectively.

Abstract:In order to achieve higher resolution images, a semi-coupled sparse dictionary learning algorithm by using adaptive image blocks clustering algorithm is proposed. The theoretical basis of semi-coupled sparse dictionary learning algorithm and adaptive image blocks clustering algorithm are studied in this paper. Firstly，according to the application of sparse representation theory in image super resolution algorithm，the coupled and semi-coupled sparse dictionary learning algorithm are introduced. The coupled dictionary learning algorithm assumes that sparse codings of corresponding high and low resolution image blocks are equal, but this assumption is too strict. The semi-coupled dictionary learning algorithm relaxes this assumption，assuming that sparse codings of corresponding high and low resolution image blocks are not equal，but satisfying a linear mapping. Secondly，because the semi-coupled sparse dictionary learning algorithm is more reasonable than the coupled sparse dictionary learning algorithm, in this paper，the semi-coupled sparse dictionary learning algorithm is adopted. Then, according to the limitations of expression of the global dictionary, the multi-dictionary learning algorithm is analyzed. Finally，through the analysis of the traditional image blocks clustering algorithm, a semi-coupled sparse dictionary learning algorithm by using adaptive image blocks clustering algorithm is proposed. The experimental results show that the Peak Signal to Noise Ratios(PSNR) of Butterfly, Cameraman, Foreman, Plants, Hat and Lena images obtained by the proposed algorithm are higher than that of the semi-coupled sparse dictionary learning algorithm based on K-means clustering algorithm by 0.18 dB,0.16 dB,0.52 dB,0.21 dB,0.23 dB and 0.14 dB respectively. According to the results，a conclusion is drawn that better reconstruction images can be obtained by the proposed method.

Abstract:An integrated debugger is designed for resolving a variety of monitoring program interface debugging problems in engineering application. The debugger utilizes multiple interface methods with modulated program communication. The hardware interface support serial port communication，network，User Datagram Protocol(UDP) and Transmission Control Protocol(TCP)，multicast way. Software interface utilizes the file，WINDOWS WM_COPYDATA communication，clipboard process communication，file map communication. Special protocol customization method is designed，by which any complex interface protocol can be customized to send，therefore the debugging software can get the required data. The analysis function is designed to monitor the correctness of the protocol data issued by the software. In any form of communication，a level of data editing function can be supported. This integrated debugger allows developers to quickly develop full set of monitoring applications in the laboratory，and to quickly extract communication problems from both sides.

Abstract:The gamma dose rate radiation model of PN junction which is the fundamental structure of integrated circuit is studied. Firstly, the importance of the PN junction dose rate radiation model is explained. Then, the analytic model of the photocurrent response of one-dimensional uniform doping abrupt PN junction is calculated based on the equation of semiconductor physics. Photocurrent response with different parameters is drawn by Mathematica according to the analytic solution. Results are compared with Technology Computer Aided Design(TCAD) numerical simulation so as to confirm the correction of analytic solution. Finally, through the analysis of the effect of dose rate, bias, PN junction geometry, doping concentration, diffusion coefficient, minority carrier lifetime on steady-state photocurrent, a new model is put forward to calculate the steady-state photocurrent, which could be much more convenient for engineering calculation.

Abstract:A high performance fully differential folded-cascode amplifier is designed. On the one hand, in order to improve the amplifier’s precision and dynamic performance, the chopper and class-AB push-pull technique are applied in the circuit; on the other hand, to further improve the voltage margin and robustness in the circuit, the self-cascode current source is applied in the amplifier. The circuit is realized based on the CSMC 0.35 μm CMOS technique, and the layout area is about 640 μm×280 μm. The simulation results show: at a power supply of 5 V and the chopping frequency of 156.25 kHz, the equivalent input noise is 1.11 nV/Hz1/2, the offset voltage is 61.5 μV and the power consumption is 1.22 mW.

Abstract:A high speed serial interface transmitter chip is described. The equalizer adopts the multi-tap feed forward equalizer structure and the tuning coefficient of each tap can be adjusted, which increases the range of the balanced tuning and improves the balance precision. H-tree driver is utilized to transmit the serial signal, which improves the current utilization coefficient and reduces the power consumption. The transmitter is designed in TSMC 55 nm CMOS technology with 1 V power supply, and the output data rate range is from 550 Mb/s to 6.25 Gb/s. The overall power consumption is approximately 20 mW at the highest rate of 6.25 Gb/s. The results indicate that the transmitter possesses high balance precision and low power consumption.

Abstract:Based on the basic principle of Time-Of-Flight cameras，a novel MATLAB/SIMULINK model is proposed to measure phase delay of a modulated light signal which represents the distance from camera to object. Subsequently，by discussing influence factors of phase measurement，it is found that the integration time，the sampling time，and the aliasing effect have important effect on improving the accuracy of phase measurement. Interestingly，by analyzing different integration time and sampling time, it is found that the best integration time and sampling time are 0.05 ms and 10 ns，respectively. In this case(i.e.,in absence of the aliasing effect)，the variation range of the distance error is between 1 mm and 11 mm in the interval of one period. Especially，under the consideration of the aliasing effect，the average value of distance error is half of that in absence of the aliasing effect. This improves the accuracy of the distance measurement greatly.

Abstract:A bandgap voltage reference source circuit with piecewise-linear compensation is designed. It has the functions of a low temperature drift and a high power supply rejection ratio. The bandgap reference core circuit adopts the structure of three branches and cascode current mirror, which improves the rejection ratio of the power supply for circuit. According to the piecewise-linear compensation principle, the circuit adds a negative temperature coefficient current when the temperature is low. Similarly, the circuit adds a positive temperature coefficient current when the temperature is high. This kind of compensation circuit greatly improves the accuracy of output voltage for bandgap reference and it achieves the goal of reducing the temperature coefficient. In addition, the current mirror adopts the cascode structure, it not only improves the rejection ratio of power supply for circuit, but also suppresses the load effect on the mirror transistor voltage. Basing on 0.5 μm standard of CMOS technology,the circuit is simulated by Cadence Spectre software. The result shows that the temperature coefficient of reference output voltage is 2.62×10-6/℃ when the temperature ranges from -50 ℃ to +125 ℃, and the Power Supply Rejection Ratio(PSRR) reaches 88 dB when the circuit is under low frequency condition.