Monolithic 38 GHz coplanar feedback VCOs fabricated by a production PHEMT technology

Author

Siweris, H.J. ; Tischer, H. ; Rohrer, E.

Author_Institution

Wireless Products, Infineon Technol., Munich, Germany

Volume

3

fYear

2001

fDate

20-24 May 2001

Firstpage

1555

Abstract

A set of coplanar 38 GHz voltage-controlled oscillators has been developed. The oscillators are based on a feedback topology and consist of a two-stage amplifier, a frequency selective feedback network, and a voltage-controlled phase shifter. The monolithic circuits also include a buffer stage and were fabricated by a production-oriented PHEMT technology. By employing different feedback networks and phase shifters according to a building block concept, several versions with tuning bandwidths between 0.6 GHz and 1.3 GHz have been realized. The oscillators show a high tuning linearity and an almost constant output power of typically 12 dBm.

Keywords

HEMT integrated circuits; MMIC oscillators; circuit tuning; feedback oscillators; field effect MMIC; voltage-controlled oscillators; 0.6 GHz; 1.3 GHz; 38 GHz; PHEMT MMIC technology; buffer stage; coplanar feedback VCO; fabrication; frequency selective feedback network; monolithic circuit; output power; tuning bandwidth; tuning linearity; two-stage amplifier; voltage controlled phase shifter; Circuit optimization; Circuit topology; Feedback; Frequency; Network topology; PHEMTs; Phase shifters; Production; Tuning; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2001 IEEE MTT-S International

Conference_Location

Phoenix, AZ, USA

ISSN

0149-645X

Print_ISBN

0-7803-6538-0

Type

conf

DOI

10.1109/MWSYM.2001.967199

Filename

967199