Title :
An 18 to 40GHz Double Balanced Mixer MMIC
Author :
Dearn, A. ; Devlin, L. ; Livney, R. ; Merhav, S.
Author_Institution :
Plextek Ltd., London
Abstract :
This paper describes the design and evaluation of a broadband, passive mixer IC. The RF frequency range is 18 to 40 GHz, the LO 20 to 42GHz and the IF 0.1 to 17 GHz. A double balanced passive topology is used, which functions well as either an upconverter or a downconverter. The RF and LO ports are single-ended and the IC incorporates on-chip baluns to provide the differential interfaces with the double balanced mixer. The IF interface to the MMIC is differential. The IC was fabricated on the PP15-20, 0.15 mum gate length PHEMT process of WIN Semiconductor. With an LO drive of +10dBm the mixer has a measured conversion loss of between 7dB and lOdB, depending on frequency. LO to IF rejection is > 30dB.
Keywords :
MMIC mixers; high electron mobility transistors; MMIC; PHEMT; RF frequency range; double balanced mixer; double balanced passive topology; frequency 18 GHz to 40 GHz; size 0.15 mum; Broadband; MMIC; Mixer;
Conference_Titel :
RF and Microwave IC Design, 2008 IET Seminar on
Conference_Location :
London
Print_ISBN :
978-0-86341-896-9