A w-band image-rejection downconverter
Journal
IEEE Transactions on Microwave Theory and Techniques
Journal Volume
40
Journal Issue
12
Pages
2332-2338
Date Issued
1992
Author(s)
Chang, K.W.
Wang, H.
Ton, T.-N.
Chen, T.-H.
Tan, K.L.
Dow, G.S.
Hayashibara, G.M.
Allen, B.R.
Berenz, J.
Liu, P.-H.
Streit, D.C.
Liu, L.C.
Abstract
The design, fabrication, and evaluation of a W-band image-rejection downconverter based on pseudomorphic InGaAs-GaAs HEMT technology are presented. The image-rejection downconverter consists of a monolithic three-stage low-noise amplifier, a monolithic image-rejection mixer, and a hybrid IF 90 degrees coupler with an IF amplifier. The three-stage amplifier has a measured noise figure of 3.5 dB, with an associated small signal gain of 21 dB at 94 GHz while the image-rejection mixer has a measured conversion loss of 11 dB with +10 dBm LO drive at 94.15 GHz. Measured results of the complete image-rejection downconverter including the hybrid IF 90 degrees coupler and a 10 dB gain amplifier show a conversion gain of more than 18 dB and a noise figure of 4.6 dB at 94.45 GHz.>
SDGs
Type
journal article