Tuning characteristics of 94 GHz waveguide VCO

Author

Han, Min ; Ko, Dong-Sik ; Baek, Tae-Jong ; Lee, Sang-Jin ; Choi, Seok-Gyu ; Rhee, Jin-Koo

Author_Institution

Millimeter-wave Innovation Technol. Res. Center (MINT), Dongguk Univ., Seoul, South Korea

fYear

2012

fDate

27-30 May 2012

Firstpage

323

Lastpage

325

Abstract

We have proposed a new tuning method of 94 GHz waveguide voltage controlled oscillator (VCO). We have designed and fabricated a varactor-tuned 94 GHz second harmonic VCO. We discuss a new method that a simple and effective tuning method increases greatly the bandwidth of the VCO with high output power and operating frequency simultaneously for the FMCW radar system by applying a controlled impact to the Gunn diode. The VCO employs a commercially available GaAs Gunn diode in packaged form and a GaAs Gunn diode mounted in a waveguide cavity. Also, we adapted MINT´s GaAs Gunn diode.

Keywords

CW radar; FM radar; Gunn diodes; millimetre wave oscillators; voltage-controlled oscillators; FMCW radar system; GaAs; GaAs Gunn diode; frequency 94 GHz; tuning characteristics; varactor-tuned second harmonic VCO; waveguide VCO; waveguide cavity; waveguide voltage controlled oscillator; Bandwidth; Frequency measurement; Gallium arsenide; Power generation; Tuning; Varactors; Voltage-controlled oscillators; 94 GHz waveguide voltage controlled oscillator (VCO); frequency tuning; impact to the Gunn diode; packaged Gunn diode; varactor tuned;

fLanguage

English

Publisher

ieee

Conference_Titel

Millimeter Waves (GSMM), 2012 5th Global Symposium on

Conference_Location

Harbin

Print_ISBN

978-1-4673-1302-5

Type

conf

DOI

10.1109/GSMM.2012.6314065

Filename

6314065