Table of Contents
ISRN Electronics
Volume 2014 (2014), Article ID 242630, 8 pages
http://dx.doi.org/10.1155/2014/242630
Research Article

A Novel Dual-Polarization Total Power Radiometer with Single Channel

Ministerial Key Laboratory of JGMT, Nanjing University of Science and Technology, Nanjing 210014, China

Received 29 August 2013; Accepted 13 November 2013; Published 13 February 2014

Academic Editors: C. W. Chiou and H. L. Hartnagel

Copyright © 2014 Yiming Niu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A dual-polarization total power millimeter wave (MMW) radiometer with single channel was proposed in this paper. It completed the subtraction of two orthogonally polarized signals in the RF front end. The system used one channel to achieve the function of two channels. On the basis of discussing the theory and the configuration of the system, the performance of the system and the ability to identify the false target were analyzed and simulated. The results showed the radiometer could solve the problem that the performance of dual-polarization radiometer becomes weak because of gain inconformity with two channels. The system was cheap and small and could identify the false target which has different apparent temperatures at vertical- and horizontal-polarized radiations.