Title :
A 2 Gb/s ΔΣ Directly Driven Wireless Link
Author :
Mu, Qianli ; Sankey, Luke ; Popovic, Zoya
Author_Institution :
Univ. of Colorado, Boulder
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;
Conference_Titel :
Microwave Symposium, 2007. IEEE/MTT-S International
Conference_Location :
Honolulu, HI
Print_ISBN :
1-4244-0687-0
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2007.380364
