Title :
A new realizable technique to improve the VCO linearity
Author :
Yongqi, Jing ; Guoyu, He ; Ding, Xu
Author_Institution :
Dept. of Electron. Eng., Beijing Univ. of Aeronaut. & Astronaut., China
fDate :
Oct. 28 2003-Nov. 1 2003
Abstract :
In this paper is presented a new technique to improve the VCO linearity by resampling the measured IF signal in short-range frequency modulated continuous wave (FM/CW) radar based on a known reflecting reference, which caused intentionally by a specially fabricated paraboloidal antenna. The basic principle and special attention are given in following discussion. Moreover, a confirmed experiment in microwave non-reflective chamber is simulated. The result shows the feasibility of our self-made antenna and this method satisfactorily.
Keywords :
CW radar; FM radar; microwave antennas; radar antennas; radar signal processing; signal sampling; IF signal; VCO linearity; fabricated paraboloidal antenna; microwave nonreflective chamber; reflecting reference; self-made antenna; short-range frequency modulated continuous wave radar; Antenna measurements; Chirp modulation; Delay; Extraterrestrial measurements; Frequency; Linearity; Radar antennas; Reflector antennas; Voltage; Voltage-controlled oscillators;
Conference_Titel :
Antennas, Propagation and EM Theory, 2003. Proceedings. 2003 6th International SYmposium on
Conference_Location :
Beijing, China
Print_ISBN :
0-7803-7831-8
DOI :
10.1109/ISAPE.2003.1276711
