Digital HF receiver

Author

Oscarsson, C.F.A.

Author_Institution

Nat. Defence Res. Establ., Linkoping, Sweden

fYear

1995

fDate

26-27 Sep 1995

Firstpage

47

Lastpage

51

Abstract

The paper describes an experimental digital receiver (tuner) for wideband applications in the HF-band. The output from the receiver is an undemodulated digitised signal with 750 kHz of useful bandwidth. The 5 MHz sampling frequency is generous compared to the bandwidth. This relaxes the demands on the analogue components and gives us the possibility of using baseband sampling without introducing aliasing distortion from the harmonic signals. Measurement shows a spurious free dynamic range of 80 dB. The low baseband sampling frequency enables us also to make use of an operational amplifier as the final drive amplifier for the A/D converter

Keywords

analogue-digital conversion; digital radio; operational amplifiers; signal sampling; superheterodyne receivers; tuning; 5 MHz; 750 MHz; A/D converter; HF band; bandwidth; baseband sampling; digital HF receiver; digital signal; double-conversion superheterodyne receiver; drive amplifier; experimental digital receiver; harmonic signals; low signal frequency; measurement; operational amplifier; sampling frequency; spurious free dynamic range; tuner; wideband applications;

fLanguage

English

Publisher

iet

Conference_Titel

Radio Receivers and Associated Systems, 1995., Sixth International Conference on

Conference_Location

Bath

Print_ISBN

0-85296-643-1

Type

conf

DOI

10.1049/cp:19951115

Filename

533429