Title :
New Tuning Method for 94 GHz Waveguide Voltage Controlled Oscillator
Author :
Ko, Dong-Sik ; LEE, Sang-Jin ; Baek, Tae-Jong ; Choi, Seok-Gyu ; Han, Min ; Park, Hyun-Chang ; Rhee, Jin-Koo ; Jung, Joo-Ho ; Park, Young-Wook
Author_Institution :
Millimeter-wave Innovation Technol. Res. Center, Dongguk Univ., Seoul, South Korea
fDate :
3/1/2011 12:00:00 AM
Abstract :
We propose a simple, yet highly effective tuning method to increase the bandwidth of a waveguide voltage controlled oscillator (VCO) by applying controlled mechanical pressures to the packaged Gunn diode mounted in the waveguide cavity resonator. When we applied this method to a varactor-tuned, second-harmonic 94 GHz VCO, the bandwidth was doubled to 1 GHz with an output power over 14.8 dBm, which is suitable for frequency-modulated continuous-wave radar sensor applications.
Keywords :
Gunn diodes; cavity resonators; circuit tuning; millimetre wave oscillators; voltage-controlled oscillators; continuous-wave radar sensor; frequency 94 GHz; frequency-modulated radar sensor; packaged Gunn diode; second-harmonic VCO; tuning method; varactor-tuned VCO; waveguide cavity resonator; waveguide voltage controlled oscillator; Bandwidth; Cavity resonators; Power generation; Radar; Tuning; Voltage-controlled oscillators; 94 GHz; Bandwidth; Gunn diode; cavity resonator; tuning; voltage controlled oscillator (VCO); waveguide;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2010.2103933
