Digital Quadrature Spatial Combining: An Efficient mm-Wave Beamforming Transmitter Jiashu Chen, Lu Ye, Ali M. Niknejad University of California, Berkeley Berkeley Wireless Research Center Feb. 14 th , 2013 BEARS
Digital Quadrature Spatial Combining: An Efficient mm-Wave Beamforming Transmitter
Feb 23, 2016
Digital Quadrature Spatial Combining: An Efficient mm-Wave Beamforming Transmitter. Jiashu Chen, Lu Ye, Ali M. Niknejad University of California, Berkeley Berkeley Wireless Research Center Feb. 14 th , 2013 BEARS. Emerging mm-Wave Applications. REF: WiGig. “Digital” Transmitters. - PowerPoint PPT Presentation
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Digital Quadrature Spatial Combining: An Efficient mm-Wave Beamforming
Transmitter
Jiashu Chen, Lu Ye, Ali M. NiknejadUniversity of California, Berkeley
Berkeley Wireless Research CenterFeb. 14th, 2013 BEARS
2
Emerging mm-Wave Applications
REF: WiGig
3
“Digital” Transmitters
4
Digital Quadrature Spatial Combining
• Non-isolating combiner Low loss× Significant I/Q crosstalk
• Isolating combiner No I/Q crosstalk× Insertion loss
5
WiGig Prototype Demonstration
CW ModePeak EIRP (dBm) 22
PA peak efficiency (%) 28.56dB Backoff (Transmission Mode)
PA average efficiency (%) 16.5Peak data rate (Gb/s) 6
EVM (dB) -16.2
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