Title

HF-VHF-UHF IQ Mixer With a Single SPDT Switch

Published In

2015 IEEE MTT-S International Microwave Symposium

Document Type

Citation

Publication Date

5-2015

Abstract

An IQ mixer topology using passive components and a single SPDT switch is described with simulations and measurements at 7 MHz and 144 MHz. A test fixture permits experiments with a variety of switch candidates. Results are presented for MOSFET switches and an SPDT switch using a hybrid coil and ring of Schottky diodes. SSB conversion loss is near 6 dB. Measured IIP3 is +16 dBm for a MOSFET switch and +6 dBm for the diodes. The Schottky version exhibits much better 2nd order performance and stability of amplitude and phase differences between I and Q ports. Results at VHF using surface mount components suggest that the Schottky diode/hybrid coil switch is a promising candidate for low power near-zero IF applications.

Description

©2015 IEEE

DOI

10.1109/MWSYM.2015.7166867

Persistent Identifier

http://archives.pdx.edu/ds/psu/19208

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