Comparison and Status of Low-noise X-band Oscillator and Amplifier Technologies
David A. Howe, Archita Hati
his study compares the phase noise of different classes of oscillators and amplifiers that work at X-band. Best-in-class results are presented based on recent measurements at NIST. In particular, comparisons are made between mature technologies of multiplied quartz, sapphire dielectric in whispering gallery mode (WGM), and air-dielectric-resonator stabilized RF oscillators in contrast to various configurations of optical electronic oscillators (OEO), cavity stabilized, and atom-stabilized optical-domain oscillators and femtosecond-laser-comb frequency synthesizers. This study also reports the status of classes of low-noise X-band amplifiers, since high-spectral purity oscillators are constrained by amplifiers to varying degrees. Best-available low-noise X-band commercial amplifiers are compared with new feedforward, feedback, and array-gain test devices. Straight HBT and SiGeHBT technologies are compared in terms of phase noise. Results are at an operating frequency of 10 GHz.
Proc. Joint Mtg. IEEE Intl. Freq. Cont. Symp. and PTTI Mtg.
and Hati, A.
Comparison and Status of Low-noise X-band Oscillator and Amplifier Technologies, Proc. Joint Mtg. IEEE Intl. Freq. Cont. Symp. and PTTI Mtg., , USA, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=50223
(Accessed May 17, 2022)