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논문 기본 정보

저자정보
(Pusan National University) (Pusan National University) (Pusan National University) (The Catholic University of Korea) (The Catholic University of Korea) (Pusan National University)
저널정보
대한전자공학회 JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE Journal of Semiconductor Technology and Science Vol.18 No.4
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    초록·키워드

    A 24-GHz RF sensing receiver front-end with improved I/Q balanced LO generator is presented for a surveillance radar system. The proposed RF receiver front-end consists of a low-noise amplifier, an I/Q down-conversion mixer, and an I/Q local oscillator (LO) generator circuit. The proposed design method of a polyphase filter at millimeter-wave frequencies provides improved and balanced I/Q signals in comparison to a conventional polyphase filter. The receiver front-end draws 20-mA current from a 1.2-V supply voltage. The measured return loss of the RF input port is less than -10 dB in the range of 23.9–24.3 GHz. The receiver front-end achieves a conversion gain of 26.8 dB, noise figure (NF) of 5.1 dB, and an input 1-dB compression point (input P1dB) of -19.7 dBm in the 23.9–24.3 GHz range. Gain and phase mismatch between the I- and Q-paths at IF output are less than 0.15 dB and 0.3°, respectively.

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      UCI(KEPA) : I410-ECN-0101-2018-569-003336488