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A harmonic optoelectronic mixer based on CMOS avalanche photodiode is designed for optimized conversion efficiency in 60-GHz band. By reducing P-N junction capacitance in the avalanche photo-detection region and parasitic n-well/substrate capacitance, the supplied 30-GHz LO is efficiently converted to the 60-GHz harmonic LO signal and generates up-converted RF signals from optical IF. In addition,...
The emerging broadband wireless access (BWA) technology based on IEEE 802.16 is one of the most promising solutions to provide ubiquitous wireless access to the broadband service at low cost. This paper proposes an efficient uplink bandwidth request-allocation algorithm for variable-rate realtime services in IEEE 802.16 BWA networks. In order to minimize bandwidth wastage without degrading quality...
A 30-GHz-band third harmonic optically injection-locked self-oscillating opto-electronic mixer is implemented with a 10-GHz InP heterojunction bipolar transistor monolithic microwave integrated circuit oscillator. The monolithic self-oscillating mixer can be optically injection locked in wide operating conditions and can perform efficient frequency up- and down-conversion with low-power optical local-oscillator...
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