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High LO-RF Isolation W-band MIMIC Single-balanced Mixer  

An Dan (Millimeter-wave INnovation Technology Research Center)
Lee Bok-Hyung (Millimeter-wave INnovation Technology Research Center)
Lim Byeong-Ok (Millimeter-wave INnovation Technology Research Center)
Lee Mun-Kyo (Millimeter-wave INnovation Technology Research Center)
Lee Sang-Jin (Millimeter-wave INnovation Technology Research Center)
Jin Jin-Min (Millimeter-wave INnovation Technology Research Center)
Go Du-Hyun (Millimeter-wave INnovation Technology Research Center)
Kim Sung-Chan (Millimeter-wave INnovation Technology Research Center)
Shin Dong-Hoon (Millimeter-wave INnovation Technology Research Center)
Park Hyung-Moo (Millimeter-wave INnovation Technology Research Center)
Park Hyim-Chang (Millimeter-wave INnovation Technology Research Center)
Kim Sam-Dong (Millimeter-wave INnovation Technology Research Center)
Rhee Jin-Koo (Millimeter-wave INnovation Technology Research Center)
Publication Information
Abstract
In this paper, high LO-RF isolation W-band MIMIC single-balanced mixer was designed and fabricated using a branch line coupler and a $\lambda$/4 transmission line. The simulation results of the designed 94 GHz balun show return loss of -27.9 dB, coupling of -4.26 dB, and thru of -3.77 dB at 94 GHz, respectively. The isolation and phase difference were 23.5 dB and $180.2^{\circ}$ at 94 GHz. The W-band MIMIC single-balanced mixer was designed using the 0.1 $\mu$m InGaAs/InAlAs/GaAs Metamorphic HEMT diode. The fabricated MHEMT was obtained the cut-off frequency(fT) of 189 GHz and the maximum oscillation frequency(fmax) of 334 GHz. The designed MIMIC single-balanced mixer was fabricated using 0.1 $\mu$m MHEMT MIMIC Process. From the measurement, the conversion loss of the single-balanced mixer was 23.1 dB at an LO power of 10 dBm. Pl dB(1 dB compression point) of input and output were 10 dBm and -13.9 dBm respectively. The LO-RF isolations of single-balanced mixer was obtained 45.5 dB at 94.19 GHz. We obtained in this study a higher LO-RF isolation compared to some other balanced mixers in millimeter-wave frequencies.
Keywords
Single-balanced mixer; MIMIC; MHEMT; Balun;
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Times Cited By KSCI : 2  (Citation Analysis)
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