A compact phased array antenna system based on dual-band Butler matrices. - Han Ren; Jin Shao; Rongguo Zhou; Bayaner Arigong; Hyoung Soo Kim; Changzhi Li; Hualiang Zhang (RWS, 2013)

Dual-band microwave power amplifier design using GaN transistors. - Jin Shao; David Poe; Han Ren; Bayaner Arigong; Mi Zhou; Jun Ding; Rongguo Zhou; Hyoung Soo Kim; Hualiang Zhang (MWSCAS, 2014)

A tunable directional coupler with a wide tuning range of coupling ratios. - Mi Zhou; Jin Shao; Bayaner Arigong; Han Ren; Rongguo Zhou; Hualiang Zhang (RWS, 2014)