Design of X-band VCO for marine radar product

Author

Harcun ; Davis, B. ; McGrath, B.

Author_Institution

Canadian Centre for Marine Commun., St.John´´s, Nfld., Canada

fYear

1994

fDate

25-28 Sep 1994

Firstpage

449

Abstract

The authors explain the design approach of a VCO using linear simulation. The design method uses measured S-parameters for the active device of the oscillator and then, employs computer simulation to optimize the oscillator circuit to satisfy the oscillation conditions. The oscillator was fabricated using a GaAs-FET and Si abrupt junction varactor diode on Duroid substrate. The tested prototype achieved tuning frequencies from 9.2 to 9.5 GHz, and provided output power of approximately 14 dBm over the frequency band. The oscillator was tested under temperature from -20°C to 60°C and the performance was excellent. The simulated and measured results are presented

Keywords

S-parameters; circuit CAD; circuit analysis computing; circuit testing; circuit tuning; field effect transistor circuits; microwave oscillators; radar equipment; varactors; voltage-controlled oscillators; -20 to 60 C; 9.2 to 9.5 GHz; Duroid substrate; GaAs; GaAs-FET; S-parameters; Si; Si abrupt junction varactor diode; VCO; X-band; computer simulation; linear simulation; marine radar; voltage controlled oscillator; Circuit simulation; Circuit testing; Design automation; Marine radar; Microwave FET oscillators; Radar equipment; Scattering parameters measurement; Tunable oscillators; Varactor tuners; Voltage controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering, 1994. Conference Proceedings. 1994 Canadian Conference on

Conference_Location

Halifax, NS

Print_ISBN

0-7803-2416-1

Type

conf

DOI

10.1109/CCECE.1994.405785

Filename

405785