S band Six-bit Digital Phase Shifter for RADAR applications

Sinha, Shruti; Rao, Ch. V. N.; Dhar, Jolly; Jyoti, Rajeev

doi:10.1109/imarc49196.2021.9714636

Cited by 2 publications

(1 citation statement)

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“…At present, most of the commercially available S-band digital phase shifters have the problems of root-mean-square phase error and large chip size. For example, Sinha et al [2] reported a digital phase shifter working at 3.2~3.3 GHz with a narrow relative bandwidth of 3.6%, the RMS phase error of the shifter is better at 1°, but the chip area is larger at 12. 48 .…”

Section: Introductionmentioning

confidence: 99%

Design of 2.5-3.3 GHz high-precision compact digital phase shifter

Zhan,

Zhang,

Pei

2024

J. Phys.: Conf. Ser.

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A 6-bit MMIC digital phase shifter, designed using a 0.5 μm GaAs pHEMT process, has been developed to enhance the search capability of phased array systems for targets. The chip structure of the phase shifter is well-designed, and the improved embedded topology of the 45° and 90° phase shifting units effectively reduces the overall insertion loss. To reduce the chip size, the phase shifting units with smaller layouts of 5.625°, 11.25°, and 22.5° are combined, greatly reducing the chip area. The results show that within the frequency range of 2.5-3.3 GHz, the input and output VSWR is less than 1.38, the insertion loss is less than 4.3 dB, the root mean square phase error of the phase shifting state is less than 1.43°, and the absolute value of the amplitude fluctuation for different states is less than 0.52 dB. The compact chip structure measures 2.45 mm×1.08 mm.

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Section: Introductionmentioning

confidence: 99%