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Experimental Performance Comparison of Six-Port and Conventional Zero-IF/Low-IF Receivers for Software Defined Radio

By Cristina de la Morena-Álvarez-Palencia and Mateo Burgos-Garcia
Progress In Electromagnetics Research B, Vol. 42, 311-333, 2012


This paper presents an experimental performance comparison among three RF architectures that are very suitable for Software Defined Radio (SDR) implementation: zero-IF, low-IF, and six-port network. A six-port receiver and a dual zero-IF/low-IF receiver have been developed for this purpose. Six-port receiver is a very promising and flexible RF architecture for the low-cost implementation of integrated microwave and millimeter-wave systems. Competitive advantages such as ultra-broadband behavior, low-cost, reconfigurability, and low power consumption, point to the six-port architecture as a good candidate to implement a SDR. However, two issues on broadband six-port receivers require intensive research: dynamic range extension, and miniaturization. In this paper, two solutions are proposed to solve these problems: the use of biased detector diodes for dynamic range extension, and the use of low temperature co-fired ceramic (LTCC) technology for six-port reduction. The measurement results indicate that the six-port receiver shows high potential benefits and advantages compared to conventional zero-IF and low-IF receivers. In addition, the capability of the six-port architecture to operate as both zero-IF and low-IF receivers has been experimentally demonstrated for the first time.


Cristina de la Morena-Álvarez-Palencia and Mateo Burgos-Garcia, "Experimental Performance Comparison of Six-Port and Conventional Zero-IF/Low-IF Receivers for Software Defined Radio," Progress In Electromagnetics Research B, Vol. 42, 311-333, 2012.


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