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An accurate average power tracking method is presented to track and compensate the fluctuation of power amplifier (PA) output during updates of digital predistorter. Firstly, joint distortion probability distribution (JDPD) of the predistorter input signal and PA compression state is presented to...
This letter describes a sub-mmW oscillator with more than 10% tuning range oscillation frequency. In particular, the circuit includes a high sensitivity sub-harmonic injection technique that forces the 270-to-300 GHz output signal to multiply by 6 a 45-to-50 GHz injection signal. Thus, the output...
A 60 GHz on/off-keying (OOK) modulator with data-dependent impedance cell for enhanced ON/OFF isolation supporting up to 2.5 Gbps data rate is presented. Based on a single-stage cascode amplifier, the OOK modulator achieves 36.5 dB isolation and 11.5 dB forward gain, resulting in very high ON/OFF...