PM noise of a 40 GHz air-dielectric cavity oscillator
Archita Hati, Craig W. Nelson, B.Riddle, David A. Howe
TL;DR
This paper presents a design for a 40 GHz air-dielectric cavity oscillator with significantly reduced phase noise, utilizing a high-Q cavity resonator and advanced signal processing techniques, and reports on Ka-band component noise characteristics.
Contribution
It introduces a novel 40 GHz oscillator design that achieves low phase noise using an air-dielectric cavity resonator and interferometric signal processing.
Findings
Unloaded cavity Q of 30,000 achieved
Effective carrier suppression demonstrated
PM noise performance of Ka-band components reported
Abstract
We describe the design of a low-phase-modulated (PM) noise, 40 GHz oscillator that uses a conventional air-dielectric cavity resonator as a frequency discriminator to improve the PM noise of a commercial 10 GHz dielectric resonator oscillator (DRO) frequency multiplied by four. The main features of this design incorporate (1) unloaded cavity quality factor (Q) of 30,000, (2) high coupling coefficient, (3) large carrier suppression by use of interferometric signal processing, (4) large operating signal power of approximately 1 watt (W), and (5) relatively small size. In addition, we report the PM noise of several Ka-band components.
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Taxonomy
TopicsAdvanced Frequency and Time Standards · Microwave and Dielectric Measurement Techniques · Millimeter-Wave Propagation and Modeling