A monolithic, 2 to 18 GHz upconverter

Author

Devlin, L.M. ; Dearn, A.W. ; Pearson, G.A. ; Beasley, P.D.L. ; Morgan, G.D.

Author_Institution

Plextek Ltd, Great Chesterford, UK

Volume

1

fYear

2002

fDate

2-7 June 2002

Firstpage

257

Abstract

This paper describes the design and evaluation of an upconverter IC for Electronic Surveillance Measures (ESM) applications. The purpose of the IC is to enable a signal anywhere in the 2-18GHz frequency band to be converted to 21-23GHz for subsequent downconversion to an IF suitable for digitisation. The required LO range is 23-41GHz. The RF, LO and IF ports of the IC are all single ended but the internal mixer is balanced at all ports and single-ended to differential conversion is realised on-chip, using novel broadband active and passive balun structures. The IC has been fabricated on the Triquint Semiconductor Texas´ 0.25/spl mu/m PHEMT process and has a measured conversion loss of 7dB to 14GHz, rising to 10dB by 18GHz. Input return loss is better than 12dB from 2 to 18GHz and LO rejection is over 30dB.

Keywords

HEMT integrated circuits; MMIC frequency convertors; baluns; surveillance; 0.25 micron; 12 dB; 2 to 18 GHz; 7 to 10 dB; Electronic Surveillance Measures; LO rejection; PHEMT IC; balanced mixer; broadband balun; conversion loss; input return loss; monolithic upconverter; Bandwidth; Circuit topology; Frequency conversion; Impedance matching; Linearity; MMICs; Mixers; PHEMTs; Process design; Radio frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2002 IEEE MTT-S International

Conference_Location

Seattle, WA, USA

ISSN

0149-645X

Print_ISBN

0-7803-7239-5

Type

conf

DOI

10.1109/MWSYM.2002.1011606

Filename

1011606