Ka-Band GaN HEMT Phase Shifter With T-Type Structure for Beamforming Applications

We designed a 6-bit Ka-band gallium nitride (GaN) phase shifter (PS). A low-pass T -type network was adopted for all bits constituting the PS to suppress the increase in size. The bandwidth of the entire PS was determined by the bandwidth of 90° and 180° bits. Instead, bits lower than 90° bit were...

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