Ku band 2 watt TR chip for phased array based on GaAs technology

A Ku-band transceiver chip (TR chip), which can be used for the phased array system, is presented in this paper. It includes a high power amplifier (HPA), a low noise amplifier (LNA) and two switches. The transmitting chain can provide over 2 watt (W) RF output power and 14 dB gain, meanwhile the receiving chain shows less than 3 dB noise figure and 25 dB gain in the frequency range of 15 to 17.5GHz. A novel switch based on GaAs pHEMT process is also proposed, which can handle over 2W RF output power without sacrificing the performance of the receiving chain. The size of the TR chip is 3mm × 3mm.

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