An Array Antenna Space Experiment Using Transmit/Receive Antenna Module (TRAM) Technology

摘要

We describe the design, fabrication and ground test of an X-band array antenna using TRAM technology for a satellite experiment with the goal of demonstrating the survivability of an ultra-lightweight, active array in a space radiation environment. TRAM technology uses MHDI (Microwave High Density Interconnect) flex circuits for the RF, control and DC manifolds. MMICS and control ICs are secured in an inexpensive, thin plastic layer directly on the face of the aperture to meet the ultra-lightweight goal of < 6 kg/m~2 for space based radar (SBR). The demonstration array is receive only. We present measured a theoretical antenna patterns for: scanned beams; a differnece beam; and a beam with a null placed deterministically in the sidelobe region.