An S/C/X-Band 4-Bit Digital Step Attenuator MMIC with 0.25 μm GaN HEMT Technology
نویسندگان
چکیده
In this paper, a 4-bit digital step attenuator using 0.25 μm GaN HEMT technology for wideband radar systems is presented. A switched-path topology with resistive T-type attenuators and double-pole double-throw (DPDT) switches was used to achieve both low insertion loss phase/amplitude error. The measured of the reference state 2.8–8.3 dB at DC-12 GHz. input output return are less than 12 An attenuation coverage 30 least significant bit 2 achieved root mean square (RMS) amplitude error 1 phase 8.5° were achieved, respectively. chip size 2.45 mm × 1.75 including pads. To best authors’ knowledge, first demonstration GaN-based attenuator.
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ژورنال
عنوان ژورنال: Applied sciences
سال: 2022
ISSN: ['2076-3417']
DOI: https://doi.org/10.3390/app12094717