Combined keyed AGC and pulse amplitude comparator circuit
US4099124A · kind A · utility
4Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1977 |
| Grant date | Jul 4, 1978 |
| Priority date | — |
| Expiry date | Apr 19, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/788
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Combined keyed AGC and pulse amplitude comparison circuit for use in pulse pair communications system such as DME wherein AGC keying signal is constituted by the second pulse having a predetermined spacing from a first pulse of a pair and wherein said second pulse also provides a reference against which the amplitude of succeeding pulses is compared. Pulses with amplitudes above said reference level are passed to a decoder for determining pulse spacing. The decoder determines which pulse pairs are properly spaced so that the second pulse of a pair can serve as a keying signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.