We report on the recent advances in using integrated planar antenna technology to photoconductively generate and detect picosecond radiation. Detection of a single pulse of picosecond duration has been achieved using a coplanar antenna structure fabricated on a radiation-damaged silicon-on-sapphire substrate.
Broadband tapered slot antennas monolithically integrated on ion damaged silicon-on-sapphire substrates are driven by picosecond photoconductivity to generate and detect millimeter waves. The time-dependent electromagnetic impulse response of these transceivers is modeled by relating the antenna structure and the shape of the exciting pulse. The far-field response is observed to consist of a traveling-wave component and a standing-wave component, which is also predicted by the model.
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