A Transceiver Module for FMCW Radar Sensors Using 94-GHz Dot-Type Schottky Diode Mixer

Author

Baek, Tae-Jong ; Ko, Dong-Sik ; LEE, Sang-Jin ; Baek, Yong-Hyun ; Han, Min ; Choi, Seok-Gyu ; Choi, Jae-Hyun ; Kim, Wan-Joo ; Rhee, Jin-Koo

Author_Institution

Millimeter-Wave Innovation Technol. Res. Center, Dongguk Univ., Seoul, South Korea

Volume

11

Issue

2

fYear

2011

Firstpage

370

Lastpage

376

Abstract

In this study, we fabricated a 94-GHz transceiver module for a millimeter-wave (MMW) frequency modulation continuous wave (FMCW) radar sensor. The transceiver modules consist of a waveguide voltage-controlled oscillator (VCO) and Rx module using a single balanced mixer. We designed a mixer with a conversion loss of 6.4 dB, without using an amplifier. Also, the waveguide VCO consisted of an InP Gunn diode, a varactor diode, two bias posts with LPF, and a Magic Tee for the MMW radar transceiver. The fabricated VCO has a tuning range of 1280 MHz by a varactor bias of 0~20 V, 1.69% linearity range of 680 MHz, and current consumption of 154 to 157 mA. The completed module has a good conversion loss of 10.6 dB with an LO power of 11.4 dBm at 94 GHz. With this RF and LO input power, the conversion loss was maintained between 10.2-11.5 dB in the RF frequency range of 93.67-94.95 GHz.

Keywords

CW radar; FM radar; Gunn diodes; III-V semiconductors; Schottky diode mixers; indium compounds; low-pass filters; millimetre wave mixers; millimetre wave oscillators; sensors; transceivers; varactors; voltage-controlled oscillators; waveguides; FMCW radar sensor; Gunn diode; InP; LPF; MMW radar transceiver; balanced mixer; current 154 mA to 157 mA; current consumption; dot-type Schottky diode mixer; frequency 93.67 GHz to 94.95 GHz; loss 10.6 dB; loss 6.4 dB; magic tee; millimeter-wave frequency modulation continuous wave radar sensor; transceiver module; varactor diode; waveguide VCO; waveguide voltage-controlled oscillator; Electromagnetic waveguides; Mixers; Power generation; Radar; Schottky diodes; Sensors; Voltage-controlled oscillators; Diode mixer; InP Gunn diode; frequency-modulated continuous-wave (FMCW); millimeter-wave (MMW); voltage-controlled oscillator (VCO);

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2010.2057419

Filename

5582180