| 摘要 |
<p>A phased array antenna system includes a plurality of active radiating antenna elements each of which is driven by and each of which drives a transceiver module located closely adjacent thereto. Each transceiver module includes a high-power pulse signal-transmitting amplifier powered by a high-capacitance, low current, a dc rectifier system to minimize charging currents and provide very high pulse currents, and a low-noise amplifier for amplifying the received signal. The modules further include a transmit/receive switch, phase adjusting circuits in the input to the high-power signal-transmitting amplifier and in the output to the low-noise signal-receiving amplifier for normalizing the signal phase, and amplitude limiting means in the input of the low-noise signal receiving amplifier for protecting the low-noise amplifier during the transmit mode. The transceiver module utilizes microstrip line technology to provide tuned circuit elements, is compact in size and low in cost, and permits an improvement in noise, gain, and radiated power characteristics to be realized in phased array radar systems.</p> |
