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1.
A compact broadband planar 90° phase shifter is presented in this letter. By loading the transmission line with M-shaped open stub, the proposed new phase shifter can achieve both compact size and wide bandwidth. Design equations are also given to reveal the key factors that affect the operation bandwidth of the phase shifter. For demonstration, one sample 90° phase shifter is designed, fabricated and measured. Results indicate that the designed phase shifter can realise a wide bandwidth from 2.7 GHz to 6 GHz, referring to a criterion of 6.2° phase deviation. 相似文献
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Yong-Sheng Dai Da-Gang Fang Yong-Xin Guo 《Microwave and Wireless Components Letters, IEEE》2008,18(2):109-111
A novel miniature ultra wide bandwidth 90 monolithic microwave integrated circuit phase shifter with microstrip radial stubs operated from 1 to 22 GHz is presented. The phase shifter exhibits a high performance. Within the whole bandwidth from 1 to 22 GHz, the phase error of the phase shifter is less than 3deg, the return losses of the different phase shift states are more than 14 dB, the insertion loss of all phase shift states are within 3.3plusmn0.5 dB. The chip size of this phase shifter is 1.4 mm times 1.8 mm times 0.1 mm. The proposed phase shifter can be compatible with different polarity control signals without the need of drivers and can also be compatible with either analogue or digital control signals. 相似文献
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A double rhombus antenna fed through a microstrip 180deg phase shifter is presented. The 180deg phase shifter is a novel design of microstrip-to-coplanar waveguide (CPW)-to-microstrip transition. The proposed phase shifter is obtained without changing the layer of the second microstrip line for an easy embedding into the feedline. Via holes are used to transfer the current from the top to the bottom substrate layer and vice versa. The antenna with the phase shifter is operating in a wide bandwidth from 5.7 and 18.6 GHz (106%), and provides stable endfire radiation patterns. This design is tested in a modified two-element array configuration and proved to have a wide usable bandwidth. 相似文献
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Distributed MEMS analog phase shifter with enhanced tuning 总被引:1,自引:0,他引:1
The design, fabrication, and measurement of a tunable microwave phase shifter is described. The phase shifter combines two techniques: a distributed capacitance transmission line phase shifter, and a large tuning range radio frequency (RF) microelectromechanical system (MEMS) capacitor. The resulting device is a large bandwidth, continuously tunable, low-loss phase shifter, with state-of-the-art performance. Measurements indicate analog tuning of 170/spl deg/ phase shift per dB loss is possible at 40 GHz, with a 538/spl deg/ phase shift per centimeter. The structure is realized with high-Q MEMS varactors, capable of tuning C/sub max//C/sub min/= 3.4. To our knowledge, this presents the lowest loss analog millimeter wave phase shifter performance to date. 相似文献
7.
Tae-Yeoul Yun Kai Chang 《Antennas and Propagation, IEEE Transactions on》2001,49(9):1290-1298
A new phased array antenna of wide bandwidth and good beam scanning angle has been developed using a low cost multiline phase shifter controlled by a piezoelectric transducer (PET) and a stripline fed Vivaldi antenna array. The multiline progressive PET phase shifter has a low perturbation loss of less than 2 dB and a total loss of less than 4 dB up to 40 GHz with a maximum phase shift of 480°. The proposed phased array antenna consists of four E- or H-plane Vivaldi antennas, a PET phase shifter, and a power divider. The phased array shows a wide beam scanning capability of ±27° over a wide bandwidth from 8 to 26.5 GHz covering X, Ku, and K bands 相似文献
8.
介绍了模拟式360°线性移相器的基本原理及优化设计方法,分析和讨论了主要技术指标的物理意义和技术规范.利用优化设计方法设计的360°线性移相器线性度优于±1.77%,工作带宽500 MHz,并在同步移相扫描应用中获得了满意的效果. 相似文献
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《Microwave Theory and Techniques》1977,25(8):662-666
A new theory is presented for how to find the optimum data for a transmission line used as a matching network for a hybrid coupler phase shifter. The theory gives a smaller phase-shift error and a greater bandwidth than already known methods. Two methods for equalization of the diode losses for a hybrid coupler phase shifter are described. 相似文献
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He Liquan Wu Xidong Zhu Xiaowei 《Journal of Infrared, Millimeter and Terahertz Waves》1993,14(2):355-361
A low insertion lose fin-line PIN diode phase shifter is presented. 90° and 180° phase shifters are realized respectively. Phase error less than 5° and bandwidth 3 GHz at Ka band are achieved. The insertion loss is better than 0.5dB. The BPSK and QPSK modulators consisting of this phase shifter and fin-line coupler are also given. The circuits and results are given. 相似文献
12.
A broadband dumb-bell-shaped 45deg phase shifter is presented using a new design comprised of open-circuit and short-circuit multi-section stubs. A wideband phase shifter operating over the frequency range 2-6 GHz was designed and fabricated for verification purposes. It was measured to have a bandwidth of about 100% for a maximum phase deviation of plusmn3.2deg, and maximum insertion loss of 2.1 dB. 相似文献
13.
移相器是毫米波相控阵雷达收发系统重要电路,基于安捷伦IC-CAP软件及砷化镓原片工艺线,研究了砷化镓毫米波开关器件测试、建模技术及其应用。采用0.15μm GaAs PHEMT工艺成功制作了一款Ka波段5位数控移相器MMIC,对毫米波数控移相器MMIC集成电路的设计、制作过程进行了阐述,并给出了测试结果。电路设计采用了开关滤波拓扑结构,运用微波探针在片测试系统对芯片进行了实测,在34~36 GHz范围内获得了优异的电性能。给出了移相器的测试曲线,32态均方根移相误差(RMS)5°,插入损耗典型值8 dB,输入/输出电压驻波比系数典型值2,芯片尺寸为2.5 mm×1.5 mm×0.1 mm。 相似文献
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Boesch Ronald D. Magin Richard L. Franke Stevenb J. 《IEEE transactions on bio-medical engineering》1987,(11):904-907
This paper describes a design for an analog phase shifter operating at 915 MHz and suitable for use in a phased array microwave hyperthermia system. Here, the major operating constraint was minimization of amplitude variation over a 1800 phase shift, whereas previous phase shifters were designed to obtain a linear relationship between phase and control voltage. The result is a simple, inexpensive hybrid coupler phase shifter that operates over a narrow bandwidth and provides 180°of continuous phase shift with input powers up to 1 W. 相似文献
16.
Kholodnyak D. Serebryakova E. Vendik I. Vendik O. 《Microwave and Wireless Components Letters, IEEE》2006,16(5):258-260
A novel approach to design digital phase shifters with the operational bandwidth extended to one octave is presented. An original design of the broadband phase shifter based on switching between transmission lines (TLs) with positive and negative dispersions is considered. An artificial TL with the negative dispersion was implemented as a quasilumped-element coplanar structure using a multilayer technology. The simulated and measured performance of the 180/spl deg/ phase shifter is presented. 相似文献
17.
Abdalla M. A. Y. Phang K. Eleftheriades G. V. 《Microwave and Wireless Components Letters, IEEE》2006,16(12):705-707
This letter presents a tunable positive/negative refractive index transmission line (TL) phase shifter utilizing active circuits. It comprises a microstrip TL loaded with series varactors and a shunt monolithic microwave integrated circuit (MMIC) to synthesize a tunable inductor. This implementation increases the phase tuning range and maintains the input and output matching of the phase shifter across the entire phase tuning range, while eliminating the need for bulky passive inductors. The phase shifter is capable of providing both positive and negative phase shifts. The MMIC tunable inductors are fabricated in a 0.13-mum CMOS process and operate from a 1.5-V supply. The phase shifter achieves a phase of -40deg to +34deg at 2.5GHz from a single stage with less than -19dB return loss, and better than 1.1-dB insertion loss at 2.5 GHz. The phase shifter has a 1-GHz bandwidth over which the return loss remains better than 12.1dB 相似文献
18.
设计了一种6 bit 6~18 GHz工作频段的宽带高精度有源移相器。片上集成了输入无源巴伦、逻辑编码器、RC多相滤波器、矢量合成单元、数控单元等。该移相器的设计采用55 nm CMOS工艺实现,芯片尺寸为1.29 mm×0.9 mm,移相器核心尺寸为1.02 mm×0.58 mm。后仿结果表明,在6~18 GHz频率范围内,增益误差RMS值小于1 dB,相位误差RMS值小于0.75°,输入回波损耗、输出回波损耗分别小于-8.5 dB、-8.9 dB,芯片总功耗为20.7 mW。该6 bit移相器的相对带宽为100%,覆盖C、X和Ku波段,适用于雷达探测等领域。 相似文献
19.
Synthesis of Schiffman phase shifters 总被引:1,自引:0,他引:1
Formulas for the synthesis of Schiffman phase shifters are presented. The formulas make possible the calculation of the bandwidth and maximum phase deviation for a given coupling coefficient or the calculation of the coupling of the coupled section in order to obtain specified phase deviation or maximum bandwidth. Design curves for a 90° Schiffman phase shifter are also presented 相似文献
20.
A Dual-Mode Latching Reciprocal Ferrite Phase Shifter 总被引:1,自引:0,他引:1
《Microwave Theory and Techniques》1970,18(12):1119-1124
A ferrite phase shifter has been developed to provide latching reciprocal phase shift over a moderate frequency band. The principle of operation is based on the use of dual-mode circularly polarized waves in the active ferrite with nonreciprocal polarizers to select modes that provide reciprocal transmission phase. The physical structure of the phase shifter consists of a metallized assembly of ferrite and ceramic dielectric. A ferrite yoke is fitted over a portion of this assembly to permit latching operation. The completed phase shifter has a very simple geometry that can be produced at low cost and has relatively low insertion loss. The maximum cross-sectional dimensions are small and are consequently compatible with application in two-dimensional electronically scanned arrays. Experimental results are presented for an X-band design having a 10-percent bandwidth centered near 9 GHz. 相似文献