A wideband flexible digital receiver using polyphase harmonic mixer

Author

Won Namgoong

Author_Institution

Dept. of Electr. Eng., Univ. of Texas at Dallas, Dallas, TX, USA

fYear

2014

fDate

19-23 Jan. 2014

Firstpage

13

Lastpage

15

Abstract

A wideband flexible digital receiver architecture suitable for software-defined and cognitive radios is presented. The receiver employs a polyphase harmonic mixer and exploits the harmonics caused by hard-switching commutating mixers to minimize the harmonic distortion in the signal path, reduce the tuning range of the frequency synthesizer, and sense a wider frequency spectrum. A robust digital equalizer in the presence of mixer gain/phase mismatch uncertainty is provided. The number of polyphase mixers needed for different operating interference environments is determined via simulation.

Keywords

cognitive radio; frequency synthesizers; harmonic distortion; signal detection; software radio; tuning; cognitive radio; digital equalizer; frequency spectrum; frequency synthesizer; hard-switching commutating mixers; harmonic distortion; polyphase harmonic mixer; signal path; software defined radio; tuning range; wideband flexible digital receiver architecture; Equalizers; Harmonic analysis; Interference; Mixers; Receivers; Robustness; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio and Wireless Symposium (RWS), 2014 IEEE

Conference_Location

Newport Beach, CA

Print_ISBN

978-1-4799-2298-7

Type

conf

DOI

10.1109/RWS.2014.6830148

Filename

6830148