An Octa-Push Oscillator at V-Band

In this paper, an octa-push oscillator is first presented. An N-push oscillator principle is effectively adopted. The proposed oscillator consists of eight sub-circuits, a microstrip ring resonator, and an output circuit. The microstrip ring resonator plays the role of both resonator and power-combiner circuit. This oscillator has the advantages of easy circuit design and the miniaturization of the circuit size due to the simple circuit configuration. The oscillator generates the output signal, utilizing the electromagnetic resonant field in the resonator. Based on the N-push principle, the desired eighth harmonic signal is successfully obtained. This octa-push oscillator achieves high-quality millimeter-wave oscillation in V-band using inexpensively available X-band devices. The measured output power of -4 dBm at a frequency of 51 GHz is obtained with the phase noise of -100 dBc/Hz at the offset frequency of 1 MHz.