A wide band, low phase noise, differential YIG Tuned Oscillator
Wireless and Microwave Technology Conference（2014）
摘要
YIG Tuned Oscillators (YTO) offer an unbeatable combination of broad band electronic tuning and extremely low phase noise. However traditional YTO designs require significant highly skilled and expensive alignment labor. Differential YTOs (DYTOs) minimizes bandwidth limiting parasitic effects and require no RF grounds. Additionally, only the phase dispersive active devices limit electronic tuning bandwidth. DYTOs are extremely simple circuits consists of three BJT active devices, a YIG sphere, and two coupling loops. The extra wide bandwidth non-dispersive phase shift required to fulfill start oscillation conditions is provided by simply reversing the sense of the YIG sphere's coupling loops. DYTOs may be easily adapted to IC various technologies. Hybrid prototype bandwidths exceeding one decade (2 GHz to 20 GHz) are demonstrated with extremely low phase noise of -150 dBc per Hz at a 1 MHz offset.
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关键词
1/f noise,mmic oscillators,mmic phase shifters,bipolar analogue integrated circuits,circuit oscillations,circuit tuning,coupled circuits,hybrid integrated circuits,integrated circuit manufacture,integrated circuit noise,iron compounds,microwave bipolar transistors,phase noise,yttrium compounds,bjt active device,dyto design,ic manufacture,yig,yig sphere coupling loops,bandwidth limiting parasitic effects minimization,broadband electronic tuning bandwidth limitation,differential yig tuned oscillator,frequency 1 mhz,hybrid prototype bandwidth,low phase noise,nondispersive phase shift,phase dispersive active device,start oscillation conditions,wideband noise,dro,vco,yig resonator,yto,bipolar transistors,differential analog circuits,electro-magnet,permanent magnet,precession,spin,transformers,dispersion,electro magnet,bandwidth,prototypes,couplings,tuning
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