Compact wideband and harmonic suppressed quadrature coupler using susceptance loaded coupled lines

2021 ◽  
Author(s):  
Hongmei Liu ◽  
Mingyao Guan ◽  
Hongxiao Zhang ◽  
Shaojun Fang ◽  
Zhongbao Wang
Keyword(s):  
Coupled Lines

Design of an Active Phase Conjugation Circuit for Retrodirective Array in UHF Band

2010 ◽  
Vol 43 ◽  
pp. 201-206
Author(s):  
Xia Li Sun ◽  
Qing Zhang ◽  
Shu Yan
Keyword(s):  
Antenna Arrays ◽  
Phase Conjugation ◽  
Active Phase ◽  
Antenna Element ◽  
Active Devices ◽  
Microstrip Filters ◽  
Input Signals ◽  
Coupled Lines ◽  
Retrodirective Array ◽  
Uhf Band

An active phase conjugation circuit of retrodirective array which can be used in UHF band (890-960MHz) has been designed. Circuit of the retrodirective array consists of filters, mixers, dividers and other microwave devices. In this paper, microstrip filters and mixers are primarily designed. Divided matching circuit will be designed appropriate on the basis of the antenna element. Filters consist of microstrip coupled lines to conform with microstrip antenna arrays; to suppress the effect of RF input signals to output transmitted signals, selecting the image-rejection mixers. Simulation results of ADS show that all of the designed active devices display good performances.

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