Title :
94 GHz Waveguide VCO with Magic_T for FMCW radar
Author :
Ko, Dong Sik ; Moon, Sung Woon ; Lee, Mun Kyo ; Lee, Sang Jin ; Du Hyun Ko ; Bang, Seok Ho ; Baek, Yong Hyun ; Han, Min ; Choi, Seok Gyu ; Baek, Tae Jong ; Kim, Sam Dong ; Rhee, Jin Koo
Author_Institution :
Millimeter-wave INnovation Technol. Res. center (MINT), Dongguk Univ., Seou
Abstract :
In this paper, we have designed and fabricated the waveguide voltage controlled oscillator (VCO) at 94 GHz, which consists of a GaAs Gunn diode, a varactor diode, and two bias posts with low pass filter (LPF), and a Magic Tee for FMCW radar. The cavity is designed for a fundamental mode at 47 GHz and operated at second harmonic of 94 GHz center frequency. The fabricated VCO has 640 MHz bandwidth, 505 MHz linearity with 2%. The VCO operates at 93.9 GHz with phase noise of -102.79 dBc/Hz at 1 MHz offset and power of 11.34 dBm. The W-band VCO has phase noise better than -100 dBc/Hz.
Keywords :
CW radar; FM radar; III-V semiconductors; gallium arsenide; millimetre wave oscillators; voltage-controlled oscillators; waveguide components; FMCW radar; GaAs; Gunn diode; frequency 47 GHz; frequency 505 MHz; frequency 640 MHz; frequency 93.9 GHz; frequency 94 GHz; frequency modulated continuous wave radar; low pass filter; magic tee; phase noise; varactor diode; waveguide voltage controlled oscillator; Diodes; Frequency; Gallium arsenide; Gunn devices; Low pass filters; Phase noise; Power harmonic filters; Radar; Varactors; Voltage-controlled oscillators;
Conference_Titel :
Microwave Conference, 2008. EuMC 2008. 38th European
Conference_Location :
Amsterdam
Print_ISBN :
978-2-87487-006-4
DOI :
10.1109/EUMC.2008.4751684
