L-Band Transmit/Receive Module for Phase-Stable Array Antennas

TBMG-3341

11/01/2008

Abstract
Content

Interferometric synthetic aperture radar (InSAR) has been shown to provide very sensitive measurements of surface deformation and displacement on the order of 1 cm. Future systematic measurements of surface deformation will require this capability over very large areas (300 km) from space. To achieve these required accuracies, these spaceborne sensors must exhibit low temporal decorrelation and be temporally stable systems. An L-band (24-cm-wavelength) InSAR instrument using an electronically steerable radar antenna is suited to meet these needs. In order to achieve the 1-cm displacement accuracy, the phased array antenna requires phase-stable transmit/receive (T/R) modules. The T/R module operates at L-band (1.24 GHz) and has less than 1-deg absolute phase stability and less than 0.1-dB absolute amplitude stability over temperature. The T/R module is also high power (30 W) and power efficient (60-percent overall efficiency). The design is currently implemented using discrete components and surface mount technology.

Meta TagsDetails
Citation
"L-Band Transmit/Receive Module for Phase-Stable Array Antennas," Mobility Engineering, November 1, 2008.
Additional Details
Publisher
Published
Nov 1, 2008
Product Code
TBMG-3341
Content Type
Magazine Article
Language
English