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Phase Conjugator for Retrodirective Array Antenna Applications  

Chun Joong-Chang (Department of Electronic Engineering, Jinju National University)
Jeung Deuk-Soo (Hanil Control, Inc.)
Lee Byung-Rho (Department of Electronic Engineering, Jinju National University)
Tack Han-Ho (Department of Electronic Engineering, Jinju National University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.16, no.2, 2005 , pp. 134-138 More about this Journal
Abstract
In this paper, we have developed a new type of the microwave phase conjugator for the active retrodirective antenna array. The circuit topology is consisted of a 2-port structure to avoid the complexity of LO and RF signal combination and matching, using the cascade connection of two single-ended mixers. The operating frequencies are 4.0 GHz, 2.01 GHz and 1.99 GHz for LO, RF, and IF, respectively. Conversion loss is measured to be -7 dB and 1-dB compression point 15 dBm with the LO power of 9 dBm. For the most important parameter, the isolation between RE leakage and IF signal is as high as 25 dB.
Keywords
Phase Conjugator; Frequency Mixer; Balanced Mixer; Retrodirective Array;
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