A linear 70-95 GHz differential IQ modulator for E-band wireless communication

Author

Gavell, Marcus ; Zirath, Herbert ; Ferndahl, Mattias ; Gunnarsson, Sten E.

Author_Institution

Microwave Electron. Lab., Chalmers Univ. of Technol., Goteborg, Sweden

fYear

2010

fDate

23-28 May 2010

Firstpage

788

Lastpage

791

Abstract

In this paper, a direct IQ modulator MMIC with a novel differential architecture, for high speed E-band wireless communication is presented. The IQ modulator consists of two balanced resistive mixer cells, on-chip marchand balun and differential branchline coupler for quadrature LO signal generation. When operating as a single side band mixer, it shows conversion loss of 11 dB and side-band suppression higher than 20 dB. LO to RF isolation and OIP3 have been measured to be more than 30 dB and 13 dBm respectively, throughout the E-band. To the authors´ best knowledge this is the first presented resistive IQ-modulator suitable for the full E-band.

Keywords

MMIC; microwave mixers; modulators; radiocommunication; E-band wireless communication; balanced resistive mixer cell; differential IQ modulator; differential branchline coupler; direct IQ modulator MMIC; onchip marchand balun; Amplitude modulation; Gallium arsenide; Impedance matching; MMICs; Phase modulation; Quadrature amplitude modulation; RF signals; Radio frequency; Wireless communication; mHEMTs; E-band; GaAs; IQ; MMIC; Resistive mixer; SSB mixer; differential; mHEMT; modulator; single sideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest (MTT), 2010 IEEE MTT-S International

Conference_Location

Anaheim, CA

ISSN

0149-645X

Print_ISBN

978-1-4244-6056-4

Electronic_ISBN

0149-645X

Type

conf

DOI

10.1109/MWSYM.2010.5518178

Filename

5518178