搜索结果: 1-9 共查到“光学工程 Antenna”相关记录9条 . 查询时间(0.021 秒)
Distributed MIMO Antenna Architecture for Wireless-over-Fiber Backhaul with Multicarrier Optical Phase Modulation
Coherent communications Phase modulation Radio frequency photonics
2015/5/26
A novel optical phase-modulated wireless-over-fiber backhaul architecture for next generation cellular network is presented and experimentally demonstrated for high capacity wireless multicarrier upli...
MIMO System Capacity Improvements Using Radio-over- Fibre Distributed Antenna System Technology
Fiber optics communications Radio frequency photonics Fiber optics links subsystems
2015/5/25
The effect of antenna separation in a 3×3 MIMO system using RoF DAS technology is investigated. Larger antenna separation is found to improve the throughput due to reduced channel correlation and impr...
Among the many photonic technologies available for antenna beamforming, those which provide flat RF response over a very wideband RF bandwidth, high signal to noise ratio,multiple-beam capabilities an...
Transmit Isolating Photonic Receive Links : a New Capability for Antenna Remoting
Transmit Isolating Photonic Receive Links Capability Antenna Remoting
2015/5/20
We describe a new type of photonic link that replaces the low noise amplifier and circulator of conventional RF front ends, but has > 20 dB greater isolation and > 1000 times broader bandwidth.
Semiconductor Nanowire Optical Antenna Solar Absorbers
Solar cell semiconductor nanowires optical antennas photon management light trapping
2015/8/10
Photovoltaic (PV) cells can serve as a virtually unlimited clean source of energy by converting sunlight into electrical power. Their importance is reflected in the tireless efforts that have be...
100 GHz Ultra-wideband Wireless System for the Fiber to the Antenna Networks
Fiber optics communications Optical communications
2015/6/8
We experimentally demonstrate an optical ultra-wideband (UWB) (75GHz-110GHz)fiber-to-the-antenna (FTTA) system using our developed W-band near-ballistic unitraveling-carrier photodiode (NBUTC-PD) base...
Multi-service Multi-carrier Broadband MIMO Distributed Antenna Systems for In-building Optical Wireless Access
Optical communications Radio frequency photonics
2015/6/4
A novel broad spectrum band-shifting technique is experimentally demonstrated to simultaneously transmit broadband (500MHz to 3 GHz) multi-service, multi-carrier MIMO signals for in-building radio-ove...
Excitataion Energy Transfer Processes and Mechanisms in Photosynthetic Antenna System “Analyses by Femtosecond and Picosecond Time-Resolved Fluorescence Spectroscopy”
Excitation energy transfer Photosynthesis Antenna system
2009/6/9
Excitation energy transfer pathways and mechanisms in the antenna systems of oxygenic photosynthetic organisms were discussed from the viewpoint of methodology of analyses. Time-resolved fluorescence ...
Antenna Pattern Effects in Wideband Polarimetric Imaging
Antenna Pattern Effects Wideband Polarimetric Imaging
2014/4/16
Antenna Pattern Effects in Wideband Polarimetric Imaging。