Direct connection of uni-traveling-carrier photodiodes to antennas for frequency reconfigurable fiber-radio transmission in the Ka band
OPTICS AND LASER TECHNOLOGY(2024)
摘要
A compact photonically-driven wireless emitter based on a Uni-Traveling-Carrier photodiode (UTC-PD) which directly connects to a short asymmetrical inductive dipole (SAID) antenna is presented. The design exploits the dependence of the UTC-PD output impedance with the reverse bias voltage to provide maximum power transfer via conjugate impedance matching at different operative frequencies within the Ka band (26.5- 40 GHz) with 6 dB antenna directivity and 1 GHz 10 dB return loss channel width. Electro-optical transmission measurements confirm that the photodiode responsivity is maintained throughout the whole voltage swing used for reconfigurability.
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关键词
Photodiodes,Millimeter wave propagation,Patch antenna,Multifrequency antennas
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