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A 77GHz GaAs mHEMT MMIC Transceiver Module for Automotive Radar Sensor
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- Authors
- Dong Min Kang, Ju Yeon Hong, Jae Yeob Shim, Hyung Sup Yoon, Kyung Ho Lee
- Issue Date
- 2006-02
- Citation
- 한국반도체 학술 대회 (KCS) 2006, pp.1-2
- Publisher
- 대한전기학회
- Language
- English
- Type
- Conference Paper
- Abstract
- A 77GHz MMIC transceiver module consisting of a power amplifier, a low noise amplifier, a drive amplifier, a frequency doubler and a down-mixer has been developed for automotive forward-looking radar sensor. The MMIC chip set was fabricated using 0.15mm gate-length InGaAs/InAlAs/GaAs mHEMT process based on 4-inch substrate. The power amplifier demonstrated a measured small signal gain of over 20dB from 76~77GHz with 15.5dBm output power. The chip size is 2mm x 2mm. The low noise amplifier achieved a gain of 20dB in a band between 76~77GHz with an output power of 10dBm. The chip size is 2.2mm x 2mm. The driver amplifier exhibited a gain of 23dB over a 76~77 GHz band with an output power of 13dBm. The chip size is 2.1mm x 2mm. The frequency doubler achieved an output power of -6dBm at 76.5GHz with a conversion gain of -16dB for an input power of 10dBm and a 38.25GHz input frequency. The chip size is 1.2mm x 1.2mm. The down-mixer demonstrated a measured conversion gain of over -9dB. The chip size is 1.3mm x 1.9mm.The transceiver module achieved an output power of 10dBm in a band between 76~77GHz with a receiver P1dB of -28dBm. The module size is 8 x 9.5 x 2.4mm 3 . This MMIC transceiver module is suitable for the 77GHz automotive radar systems and related applications in W-band.
- KSP Keywords
- 77 GHz, Automotive radar systems, Conversion gain, Driver Amplifier, Forward-looking, Frequency doubler, GHz band, GaAs mHEMT, Input power, Output power, Radar sensor