A Compact W-Band Reflection-Type Phase Shifter with Extremely Low Insertion Loss Variation Using 0.13 µm  CMOS Technology

Deng, Xiaodong; Li, Yihu; Wu, Wen Jin; Xiong, Yong Zhong

doi:10.3390/mi6030390

Cited by 3 publications

(1 citation statement)

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“…With the emergence of the Internet of Things (IoT) and fifth-generation (5G) communication, demand for technological innovation has also driven modern wireless systems, transceivers, and standards to evolve with rapid speed [ 1 , 2 ]. As one of the most crucial components in these radio frequency (RF) systems, along with modulators, multiple-input multiple-output (MIMO) or phased arrays, phase shifters are primarily employed to generate relatively constant phase difference for the achievement of electronic beam forming and scanning [ 3 , 4 , 5 , 6 ]. Therefore, its performance directly affects the essential metrics of the system.…”

Section: Introductionmentioning

confidence: 99%

Compact Bandwidth-Enhanced 180-Degree Phase Shifter Using Edge-Coupled Multi-Microstrip and Artificial Transmission Line

He,

Fan,

Zhu

et al. 2023

Micromachines

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Compactness has obtained sufficient importance in wideband phase shifter design considerations, as it is directly related to fabrication cost. In this paper, a novel structure was presented to create compact broadband 180-degree phase shifter, which has the advantages of enhanced bandwidth and significantly reduced chip area. The proposed configuration consists of edge-coupled multi-microstrip lines (ECMML) and an artificial transmission line (ATL) with dual-shorted inductors, both of which have the periodic shunt load of capacitors. The ECMML can provide a high coupling coefficient, leading to an increase in the bandwidth, while the introduced capacitors can greatly reduce the line length (35.8% of the conventional method). To verify the relevant mechanisms, a wideband switched network with compact dimensions of 0.67 × 0.46 mm2 was designed via 0.15-micrometer GaAs pHEMT technology. Combined with the measured switch transistor, it was shown that the proposed phase shifter exhibits an insertion loss of less than 2 dB, a return loss of greater than 12 dB, a maximum phase error of less than 0.6° and a channel amplitude difference of less than 0.1 dB in the range of 10 to 20 GHz.

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