Ka-band full-360° analog phase shifter with low insertion loss  

作　　者：曹梦逸 卢阳 魏家行 郑佳欣 马晓华 郝跃 

机构地区：[1]Key Laboratory for Wide Band-Gap Semiconductor Materials and Devices School of Microelectronics Xidian University [2]School of Advanced Materials and Nanotechnology Xidian University

出　　处：《Journal of Semiconductors》2014年第10期114-118,共5页半导体学报（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(No.61334002);the Opening Project of Science and Technologyon Reliability Physics and Application Technology of Electronic Component Laboratory(No.ZHD201206);the Program for New Century Excellent Talents in University(No.NCET-12-0915)

摘　　要：A new reflection-type wideband 360° monolithic-microwave integrated-circuit （MMIC） analog phase shifter at the Ka-band is proposed. The phase shifter is designed based on the principle of vector synthesis. Three Lange couplers are employed in the phase shifter, which is fabricated by the standard 0.25μzm GaAs process. We use four 4 × 40μm GaAs HEMTs as the reflection loads. A microstrip line in parallel with the device is used as an inductance to counteract the parasitic capacitance of the device so that the reflection load performs like a pure resistance and the insertion loss can be decreased. In this phase shifter, a folded Lange coupler is utilized to reduce the size of the chip. The size of the proposed MMIC phase shifter is only 2.0 × 1.2 mm2. The measurement results show that the insertion loss is 5.0 4- 0.8 dB and a 360°continuously tunable range across 27-32 GHz is obtained with miniscule DC power consumption.A new reflection-type wideband 360° monolithic-microwave integrated-circuit （MMIC） analog phase shifter at the Ka-band is proposed. The phase shifter is designed based on the principle of vector synthesis. Three Lange couplers are employed in the phase shifter, which is fabricated by the standard 0.25μzm GaAs process. We use four 4 × 40μm GaAs HEMTs as the reflection loads. A microstrip line in parallel with the device is used as an inductance to counteract the parasitic capacitance of the device so that the reflection load performs like a pure resistance and the insertion loss can be decreased. In this phase shifter, a folded Lange coupler is utilized to reduce the size of the chip. The size of the proposed MMIC phase shifter is only 2.0 × 1.2 mm2. The measurement results show that the insertion loss is 5.0 4- 0.8 dB and a 360°continuously tunable range across 27-32 GHz is obtained with miniscule DC power consumption.

关 键 词：analog phase shifter Lange coupler MMIC parallel inductance 

分 类 号：TN623[电子电信—电路与系统] TN253