Absorptive SPDT switch design using cascaded switchable parallel-coupled stub resonator and switchable radial stub resonator

Shairi, N. A.; Ahmad, B. H.; Wong, Peng Wen

doi:10.1109/tenconspring.2014.6863048

Cited by 2 publications

(1 citation statement)

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“…Furthermore, there were switchable matched bandstop to band-pass filter designs utilizing ring resonator [17] and parallel-coupled resonator [18]. Besides, the potential application of tunable matched bandstop filter in SPDT switch was discussed in [19]- [23].…”

Section: Introductionmentioning

confidence: 99%

Parametric studies of ring and parallel coupled line resonators for matched bandstop filter design

Othman¹,

Shairi²,

Zakaria³

2019

IJEECS

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Recently, matched bandstop filters had become a substantial part of modern RF and microwave systems. However, in these types of filters, the key problem in the couplings of any microstrip resonators to transmission microstrip line is the variation or tolerance of the coupling gap. It was found that the bandstop response is very sensitive to the gap size of the coupled line. Therefore, this paper presents parametric studies of dual-mode parallel coupled line and ring resonator for matched bandstop filter design. For parallel coupled line resonator, it was found that with careful design and proper circuit parametric study on the coupling spacing, very high notch and matched return loss response were obtained. In contrast, for ring resonator, based on the simulated result, it was found that a very high notch and matched return loss response were obtained with careful design and proper circuit parametric study on the coupling spacing, width at coupling lines, and perturbed stub length.

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