Conference paper
Novel design of an all-cryogenic RF pound circuit
We report on the design, construction and test of a new all-cryogenic RF Pound circuit used to stabilize a 100 MHz VCXO. Here, all active and passive RF components used to accomplish the phase modulation and detect a PM to AM conversion have been installed into the cryogenic environment. In conjunction with a high-Q cryogenic sapphire resonator a Pound discriminator sensitivity of 0.1 mV/Hz was seen experimentally.
Based on this sensitivity and the noise properties of the pre-amplifier of the Pound signal, we calculate a limit of the oscillator's Allan deviation as low as 4middot10-16/radictau. Experimentally, the first experiments gave a stability of 1middot10-13 at 1 second.
| Language: | English |
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| Publisher: | IEEE |
| Year: | 2005 |
| Pages: | 562-568 |
| Proceedings: | 2005 IEEE International Frequency Control Symposium and Exposition |
| ISBN: | 0780390539 , 1538601427 , 9780780390539 and 9781538601426 |
| Types: | Conference paper |
| DOI: | 10.1109/FREQ.2005.1573994 |
100 MHz Allan deviation Circuit stability Circuit testing Cryogenics Microwave oscillators PM-AM conversion Phase detection Phase modulation Pound discriminator Pound signal pre-amplifier Q factor RF Pound circuit Radio frequency Resonance Temperature VCXO VHF oscillators all-cryogenic circuit cryogenic electronics cryogenic sapphire resonator discriminators noise properties phase modulation
