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We present a RF frequency down-conversion scheme using a switching mode uni-travelling-carrier (UTC) photodiode. This approach has the potential to achieve good conversion linearity and is suitable for photonic integration.
Direct integration of high power, high linearity photodiodes with a UWB phased connected array antenna to form a low profile, transmit aperture is presented. This proximal optical-to-electrical conversion leverages advantages of photonic feeding techniques and antenna design flexibility for effective UWB beam steering.
Microwave photonic radiators provide wide bandwidths and high powers at mm-wave frequencies that can be utilized in extremely high throughput wireless communications, and high resolution millimeter wave imaging systems where their rugged, compact designs enable integration into large scale millimeter wave phased arrays. This work presents the design, implementation and measurement of a millimeter...
We demonstrate high speed and high power evanescently-coupled waveguide modified uni-traveling-carrier photodiodes. These devices achieved 70 GHz bandwidth and as high as 7.8 dBm RF output power at 60 GHz.
We demonstrate modified uni-traveling carrier balanced photodiodes (PDs) with top p-contact heterogeneously integrated on silicon-on-insulator (SOI) nano-waveguides. The photodiodes have low dark current and high bandwidth of 200 nA and 20 GHz, respectively. The common mode rejection ratio (CMRR) is 20 dB. The RF output power at 15 GHz of a single photodiode reaches 8.5 dBm at 25 mA and 3 V reverse...
We demonstrate a fully integrated tunable photonic millimeter wave generator. Optimized III/V epi for gain, modulator, and photodiodes are bonded to silicon-on-insulator to allow a multi-functional photonic integrated circuit. Microwave signals up to 90 GHz are demonstrated.
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