Standing wave oscillators utilizing wave-adaptive tapered transmission lines

This paper introduces a novel standing wave oscillator (SWO) utilizing a tapered transmission line adapted to the position-dependent amplitudes of standing waves. The tapered line fully exploits the core property of standing waves to enhance Q and lower phase noise, demonstrating the benefits of wave-based oscillators. Measurements confirm the advantages of the proposed technique. The phase noise of a fully-integrated MOS SWO with the tapered line is about 8 dB superior to that of a uniform-line SWO over a wide range of offset frequencies, where the oscillation frequencies are around 15 GHz.