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US 4,158,784 AGranted
Pulse train generator
AssigneeRCA Corporation
InventorWalter R. Curtice
Life of this patent
Estimating the term…
Abstract
A pulse train generator operating at subnanosecond periods includes a transferred-electron device (TED) in series with an open circuited resonant transmission line. The transmission line sustains domain formation in the TED. A filter coupled to the TED may be utilized to produce pulses at a subharmonic of the TED transit time frequency, determined by the length of the transmission line.
Claims11
A circuit for producing a pulse train at a fundamental frequency and at least one harmonic frequency, comprising:
- a two conductor transmission line substantially non-dispersive at said fundamental and harmonic frequencies, said line having a length substantially equal to one half of the wavelength therein associated with said fundamental frequency, said line being open circuited at one end and short circuited at the other end;
- an active device coupled in series in said line at a point removed from said ends and being operable to exhibit negative resistance at said fundamental and harmonic frequencies;
- and
- an output terminal coupled to said transmission line at a point between said active device and said short circuited end for providing a signal at said fundamental and harmonic frequencies.
1 more element
Dependencies are inferred from the claim text.