Transmit and receive antenna element with feedback
US5311190A · kind A · utility
12Cited by
1References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1992 |
| Grant date | May 10, 1994 |
| Priority date | — |
| Expiry date | Dec 22, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q3/42
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A transmit/receive element having a transmit/receive circuit that includes a variable frequency transmit phase lock loop and a variable frequency receive phase lock loop, and an output amplifier that receives a modulated transmit signal from the transmit phase lock loop for driving an antenna element. The transmit phase lock loop receives a feedback signal which is (a) the modulated transmit signal during receive intervals and (b) the output of the output amplifier during transmit intervals, such that the transmit phase lock loop is controlled by a feedback signal at all times.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.