Transmit-receive module for phased-array antennas

Details Transmit-receive module for phased-array antennas Transmit-receive module for phased-array antennas

1986-09-10

1988-12-13

Blum, Theodore M.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a steerable array

342374, H01Q 326

Patent

active

047914211

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.

REFERENCES:
patent: 1669123 (1928-05-01), Espenschied et al.
patent: 3667064 (1972-05-01), Thorton et al.
patent: 3704419 (1972-11-01), Rheinfelder
patent: 3956699 (1976-05-01), Leahy
patent: 4516126 (1985-05-01), Masak et al.
patent: 4641141 (1987-02-01), Masak
patent: 4673939 (1987-06-01), Forrest

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