Radio frequency power output control and detection for electronically scanned array system
US9685989B1 · kind B1 · utility
0Cited by
4References
17Claims
0Family size
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Key dates
| Filing date | Feb 1, 2016 |
| Grant date | Jun 20, 2017 |
| Priority date | — |
| Expiry date | Feb 1, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/44
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Electronically scanned array antenna radiating elements include a phase comparator. The phase comparator connects the transmission circuitry to the receiving circuitry via a shunt switch to compare the intended phase with the actual phase. The phase of a signal received via the shunt switch is sensitive to the performance of power amplifiers in the transmission circuitry, transmitter/receiver switch, and load impedance. Distributed attenuators between the shunt switch and a phase comparator reduce crosstalk. Phase comparison circuitry is useful for detecting faults in the ESA radiating element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.