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

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...

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Bibliographic Details
Main Authors: Gavell, M., Zirath, H., Ferndahl, M., Gunnarsson, S. E.
Format: Conference Proceeding
Language:English
Subjects:
Chirp modulation
Communication system control
Control systems
Frequency conversion
High speed integrated circuits
Impedance matching
MMICs
Sensor systems
Signal generators
Wireless communication
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Summary: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.
ISSN:0149-645X
2576-7216
DOI:10.1109/MWSYM.2010.5517531