A 2 Gb/s ΔΣ Directly Driven Wireless Link

Author

Mu, Qianli ; Sankey, Luke ; Popovic, Zoya

Author_Institution

Univ. of Colorado, Boulder

fYear

2007

fDate

3-8 June 2007

Firstpage

211

Lastpage

214

Abstract

One-bit ΔΣ modulation in a wireless transmitter is studied as a potential candidate for multifunction broadband transmit front ends. Characterizing a single ΔΣ modulated transmit element is the first step towards a transmit array for radar/communication applications. A wireless link directly driven by a 2 Gb/s ΔΣ bit sequence is analyzed through simulation and measurement. Effects of clock jitter, asymmetrical rise/fall edges and asymmetrical rise/fall times of the digital signal are studied. A Xilinx Virtex II-Pro FPGA is used to generate the ΔΣ bit sequences. The transmit and receive antennas simultaneously perform bandpass filtering of the noise in the ΔΣ spectrum.

Keywords

antenna arrays; delta-sigma modulation; field programmable gate arrays; radio links; radio transmitters; timing jitter; ΔΣ modulation; Xilinx Virtex II-Pro FPGA; asymmetrical rise/fall edges; asymmetrical rise/fall times; bandpass filtering; bit rate 2 Gbit/s; clock jitter; communication applications; multifunction broadband transmit front ends; radar applications; receive antennas; transmit antennas; transmit array; wireless link; wireless transmitter; Analytical models; Antenna measurements; Band pass filters; Clocks; Field programmable gate arrays; Filtering; Jitter; Radar applications; Receiving antennas; Transmitters; Delta-Sigma Modulation; Multifunction Array; Wireless Transmitter;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium, 2007. IEEE/MTT-S International

Conference_Location

Honolulu, HI

ISSN

0149-645X

Print_ISBN

1-4244-0687-0

Electronic_ISBN

0149-645X

Type

conf

DOI

10.1109/MWSYM.2007.380364

Filename

4263781