Abstract: This invention relates to a transmit/receive module for a high power Active Phased Array Antenna system operating in L-band based upon a combination of Hybrid Microwave Integrated Circuit (MIC) as well as Monolithic Microwave Integrated Circuit (MMIC) technology. The transmit/receive module includes a power monitoring means, transmitter protector means, and a receiver protector means. The module comprises a signal transmit chain incorporating power conditioner and a signal receive chain incorporating control electronics and bias- sequencer modulator. The transmit chain has switching means for switching the module to transmit mode which is connected to the transmit amplifier chain through a shared digital phase shifter. The amplified signals from the transmit amplifier chain are conveyed to a duplexer means.

Abstract: This invention relates to a transmit and receive module for active phased array antenna system based upon a combination of hybrid microwave integrated circuit (MIC) as well as monolithic microwave integrated circuit (MMIC) technology. The module comprises a signal transmit chain having switching means (03) for switching the module to transmittance mode. Means are provided for applying pulsed RF signal to the said module from array manifold. A phase shifter (01) is connected to a digital attenuator (02) and the output of the attenuator (02) is connected to a power amplifier (04). The amplified signals from amplifier (04) are conveyed to a duplexer means (05) connected to said power amplifier (04) and for routing back the received signal through a receiver protector (06) and low noise amplifier means (07). Electronic means are connected to a power conditioner for controlling the operation of the device.