HMSIW-based switchable units using super compact loaded shunt stubs and its applications on SIW/HMSIW switches

Chen, Haidong; Che, Wenquan; Zhang, Tianyu; Cao, Yue; Feng, Wenjie

doi:10.1080/00207217.2018.1426114

Cited by 1 publication

(1 citation statement)

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“…The PIN diode works as a microwave switch to shift between different components in the guide-wave structure. The electrical control unit changes the combination or the values of the distributed impedances in the cavity to alter the propagation characteristics [8,9]. An adjustable SIW filter was demonstrated by using the PIN diode to connect the different lengths of slot lines in the cavity.…”

Section: Introductionmentioning

confidence: 99%

A Compact Bandpass Filter with Active Switchable Passband Status

Xu,

Tang,

Wang

et al. 2024

ACES Journal

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In order to meet the increasing demand for adjustable devices in the modern wireless communication system, a compact bandpass filter with active switchable passband is proposed. The filter is based on the half mode substrate integrated waveguide (HMSIW), and uses its cut-off characteristics to form the lower stopband. The resonant characteristics of a quarter-wavelength shorted stub generates a transmission zero (TZ) at higher frequency, which forms the upper stopband. The active control of DC power supply determines the biased states of PIN diodes to change the electrical size of the filtering parts. When the diodes are reverse biased, the filter works in C band with the passband of 3.9-5.2 GHz; when the diodes are forward biased, the passband shifts to S band of 2.7-3.6 GHz. The 28.6% relative bandwidth in both frequency bands remains constant. The simple design realizes the active switching between bands, providing a promising idea for active adjustable devices.

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Section: Introductionmentioning

confidence: 99%