A wide frequency coverage synthesizer with high performance for 3MHz–5GHz transceiver

Author

Lin Wang ; Yuanwang Yang ; Jiangyue Cai ; Gang Liu

Author_Institution

Sch. of Inf. & Software Eng., Univ. of Sci. & Technol. of China, Chengdu, China

fYear

2013

fDate

23-25 March 2013

Firstpage

1178

Lastpage

1181

Abstract

In this paper, an approach of developing high frequency resolution 3MHz-5GHz frequency synthesizer for a multi-channel wide band transceiver system is proposed. Using DDS (direct digital synthesizer) driven PLL (phase locked loop) structure to provide the local oscillators signal in a wide frequency range, with high-speed controlling of DSP (Digital Signal Processor), the frequency synthesizer implemented in the paper has good performance on spectrum purity. The minimum frequency resolution is 5Hz. The phase noise level is less than -80dBc/Hz@1kHz. The in-band and outside-band spurious level are below -55dBc and -65dBc accordingly. In frequency hopping mode, the frequency switching time is less than 30us.

Keywords

digital signal processing chips; direct digital synthesis; microwave oscillators; phase locked loops; radio transceivers; DDS; DSP; PLL; digital signal processor; direct digital synthesizer; frequency 3 MHz to 5 GHz; local oscillators signal; multichannel wide band transceiver system; phase locked loop; radio transceiver; wide frequency coverage synthesizer; Bandwidth; Frequency synthesizers; Phase locked loops; Phase noise; Signal resolution; Switches; Synthesizers;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Science and Technology (ICIST), 2013 International Conference on

Conference_Location

Yangzhou

Print_ISBN

978-1-4673-5137-9

Type

conf

DOI

10.1109/ICIST.2013.6747747

Filename

6747747