A full-polarization W-band receiver for CMB detection
Journal
Proceedings of SPIE - The International Society for Optical Engineering
Journal Volume
4855
Pages
312-317
Date Issued
2002
Author(s)
Chen, M.-T.
Hwang, Y.-J.
Ho, W.M.
Jiang, H.
Chu, T.-H.
Wang, L.-S.
Hsieh, S.-N.
Han, J.C.
Sinclair, M.M.
Abstract
This is to report on our development for a full-polarization receiver to detect comic microwave background in 85 to 105 GHz band. Two such receivers have been built and tested, and currently undergoing site-testing on Mauna Loa, Hawaii. Each receiver is a very sensitive coherent detector to operate in 85-105 GHz with full polarization capability. Most of the receiver front-end components, including feed-horn, ortho-mode transducer, and low-noise amplifiers, are located in a cryogenic environment. We have designed a MMIC sub-harmonic pumped mixer, operating at 42 GHz, for signal down-conversion. In order to detect faint polarization signals in microwave background, a wide base-band, 2 to 18 GHz, is specified in the receiver design, and the entire base-band will be correlated. The receiver design details and the lab test results will be described in this report.
SDGs
Type
conference paper