Transmit-receive module for phased-array antennas
US4791421A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 1986 |
| Grant date | Dec 13, 1988 |
| Priority date | — |
| Expiry date | Sep 10, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q3/26
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Coupling module for use with phased-array antenna systems. The module includes separate phase shifters for the transmit and receive paths through the module. The transmit path also includes a power amplifier and the receive path includes a small signal, low noise amplifier. The two paths are coupled to the antenna radiating element by a transmit-receive switch or by a microwave circulator. A conducting septum is located between the devices in the transmit and receive paths to increase the isolation between the two paths. The individual phase shifters are optimized for unidirectional flow of comparatively large or small microwave signals and for the degree of desired phase shift resolution. By using vector modulators for the phase shift devices, the amplitude of the signal in the path can be compensated for temperature and frequency variations in the path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.