Study On60GHZ Mm-wave Wireless Transceiver Module For Radio Over Fiber System

With the more and more urgent needs of large capacity, high bandwidth forwireless access, the60GHz radio over fiber system developed rapidly, as it can wellsatisfy people’s demand. But there are many difficulties for the application of60GHzmillimeter wave, especially the60GHz wireless transceiver module for the radio overfiber system, the very high frequency, many deficiencies in schemes of60GHztransceiver, high manufacturing cost and so on. At the same time, research gap onmillimeter wave device between our country and other countries also exists. Therefore,the research on the60GHz wireless transceiver module for radio over fiber system has avery important significance.In this thesis, the60GHz wireless transceiver module for radio over fiber system isstudied. It contains:1. In view of the I/Q mismatch and the local-oscillator leakage problems exist inthe existing60GHz wireless transceiver module schemes, this paper proposed a novel60GHz wireless transceiver module scheme to solve the above defects.2. The twice sub-harmonic mixing principle is used for designing the60GHzmillimeter-wave mixer in the proposed scheme. The millimeter wave signal with thecenter frequency at60GHz could be mixed to the intermediate-frequency signal with thecenter frequency at1.5GHz. The isolations of the different ports of the mixer are morethan20dB. And the conversion loss of the mixer is less than17dB, at the best conditions,conversion loss can reach5.4dB. The output power of the60GHz mm-wave wirelesstransceiver system is nearly linear with the different input power.3. The joint simulation of optical simulation software VPI and RF simulationsoftware ADS is used innovatively in this paper. This could give full use of theadvantages of two kind of software respectively. The joint simulation puts the opticalsignals and electrical signals into together, and simulates the designed60GHz wirelesstransceiver module. The simulation results verified the correctness and feasibility of thedesigned60GHz wireless transceiver module. At the same time, the performance of themodule is pre-estimated before the industrial processing of the60GHz wireless terminal receiving module. The designed receiving module of the wireless terminal couldachieve a good output signal-to-noise ratio and receiving sensitivity. Finally, anexperimental platform is built for aided validation on the part of the60GHz RoFsystem.