DocumentCode :
3459824
Title :
24 GHz circularly polarized Doppler radar with a single antenna
Author :
Kim, Jeong-Geun ; Sim, Sang-Hoon ; Cheon, Sanghoon ; Hong, Songcheol
Author_Institution :
Dept EECS, Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea
Volume :
2
fYear :
2005
fDate :
4-6 Oct. 2005
Abstract :
24 GHz circularly polarized Doppler front-end with a single antenna is developed. The radar system is composed of 24 GHz circularly polarized Doppler radar module, signal conditioning block, DAQ unit, and signal processing program. 24 GHz Doppler radar receiver front-end IC which is comprised of 3-stage LNA, single-ended mixer, and Lange coupler is fabricated with commercial InGaP/GaAs HBT technology. To reduce the chip size and suppress self-mixing, single-ended mixer which uses Tx leakage as a LO signal of the mixer is used. The operation of the developed radar front-end is demonstrated by measuring human vital signal. Compact size and high sensitivity can be achieved at the same time with the circularly polarized Doppler radar with a single antenna.
Keywords :
Doppler radar; III-V semiconductors; gallium arsenide; gallium compounds; indium compounds; millimetre wave antennas; 24 GHz; Doppler radar receiver front-end IC; HBT technology; InGaP-GaAs; LNA; Lange coupler; human vital signal; radar system; sensitivity; single antenna; single-ended mixer; Antenna measurements; Data acquisition; Doppler radar; Gallium arsenide; Heterojunction bipolar transistors; Polarization; Radar antennas; Radar measurements; Radar signal processing; Signal processing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Microwave Conference, 2005 European
Print_ISBN :
2-9600551-2-8
Type :
conf
DOI :
10.1109/EUMC.2005.1610194
Filename :
1610194
Link To Document :
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