350-GHz phase/frequency locked loop for use with a carcinotron backward wave oscillator

Details 350-GHz phase/frequency locked loop for use with a carcinotron backward wave oscillator 350-GHz phase/frequency locked loop for use with a carcinotron backward wave oscillator

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986rsci...57.2547v&link_type=abstract

Review of Scientific Instruments (ISSN 0034-6748), vol. 57, Oct. 1986, p. 2547-2553.

Astronomy and Astrophysics

Astronomy

2

Backward Wave Tubes, Carcinotrons, Microwave Oscillators, Millimeter Waves, Phase Locked Systems, Radio Astronomy, Block Diagrams, Systems Engineering

Scientific paper

A phase/frequency-locked loop for use in a millimeter-wave radio astronomy receiver is discussed. The system's tunable reference frequency unit, frequency and phase detector unit, and loop filter unit are described. Measured results are reported which demonstrate the practicality of phased-locking a 350 GHz carcinotron to a much lower frequency reference in order to obtain a very high-stability local oscillator signal. The level of stability obtained so far guarantees good operation in radio astronomy receivers for local observations and for nonlocal future applications.

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