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This paper proposes a circuit topology which reduces the chip size of single-pole-double-throw (SPDT) quarter-wavelength bandpass filter-integrated switches (FIS). A 40-GHz mHEMT MMIC SPDT switch has been implemented and demonstrates a measured insertion loss lower than 1 dB and an isolation better than 30 dB. Another 50-GHz pHEMT MMIC SPDT achieves 1.5 dB insertion loss and 22 dB isolation. The low...
A design approach for a new band-pass filter-integrated-switch implemented using passive field-effect transistor (FET) is proposed for the first time. This design approach integrates the switch and quarter wavelength bandpass filter functions into a single component and thus simplifies the conventional T/R system designs. A 1-GHz hybrid band-pass single pole single throw (SPST) filter-integrated switch...
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