Basic Behavior of Quadruple-Push Oscillator Using Ring Resonator(Microwaves, Millimeter-Waves)

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A novel millimeter wave quadruple-push oscillator is presented in this paper. The quadruple-push oscillator consists of four identical sub-circuits and a ring resonator that is used as a common resonator. It is well known that there are two orthogonal resonant modes on a one-wavelength ring resonator. According to this resonant characteristic, two orthogonal push-push oscillations can be set up in the quadruple-push oscillator, and there is a phase difference of 90° among four sub-circuits due to nonlinear performance. Therefore, the four identical sub-circuits can oscillate at the same fundamental frequency ƒ_0, and the fundamental oscillating signal of one sub-circuit has phase differences of 90°, 180° and 270° to that of the others, and the desired fourth harmonic signals can be combined due to their in phase relations, and the undesired fundamental signals, the second harmonic signals, the third harmonic signals and so on can be suppressed when the oscillating signals of the four sub-circuits are added in phase. The principle is firstly explained in this paper, and is proved in the experiment of a Ka-band quadruple-push oscillator. The measured output power of the desired fourth harmonic signal (4ƒ_0) was +1.67dBm at the frequency of 35.8GHz. The measured suppression of the undesired signals of the fundamental signal (ƒ_0), the second harmonic signal (2ƒ_0), the third harmonic signal (3ƒ_0) and the fifth harmonic signal (5ƒ_0) were -18.0dBc, -17.9dBc, -17.8dBc and -35.5dBc, respectively. The measured phase noise performances at 35.8GHz were -104.0dBc/Hz and -82.3dBc/Hz at the offset frequency of 1MHz and 100kHz, respectively.
社団法人電子情報通信学会の論文
2005-07-01

Basic Behavior of Quadruple-Push Oscillator Using Ring Resonator(Microwaves, Millimeter-Waves)

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