UTC Photodiode Model for mmWave Photonic Integrated Antennas at 5G Base Stations

The equivalent circuit of two UTC photodiodes (UTC-PDs) are modelled using microwave and semiconductor-device simulations. The models are achieved without the need to measure the S-parameters of a photodiode (PD). Hence, low-cost and accurate models are generated, from which PD S
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are obtained in the frequency range from 1 to 141 GHz. Thanks to the accurate PDs’ models, a matching network between the PDs and millimeter-wave circuits can be designed.