Title :
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
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;
Conference_Titel :
Microwave Symposium Digest (MTT), 2010 IEEE MTT-S International
Conference_Location :
Anaheim, CA
Print_ISBN :
978-1-4244-6056-4
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2010.5518178