Switchable matched band-stop filter for high power interference mitigation

In this paper, an absorptive filter-integrated switch (FIS) using switchable T-shape resonators is presented. The FIS was made up of two absorptive T-shape resonators and integrated with single pole double throw (SPDT) switch. A simple mathematical analysis of isolation and insertion loss of filter-integrated SPDT switch is discussed. PIN diodes were used as the switching elements for the SPDT switch and to reconfigure between the band-stop and bandpass responses. The proposed absorptive FIS design could be used for internet of things (IoT) applications such as Zigbee and Bluetooth at an operation frequency of 2.45 GHz. As a result, the proposed FIS exhibited low magnitude of insertion loss and high isolation. Therefore, the key advantages of the proposed FIS design are low insertion loss, high isolation, and good return loss at both ON-and OFF-state ports.

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“…During bandpass operation, the PIN diodes (D) were in the ON state. In this case, the even and odd mode admittances are derived as follows [29]:…”

Section: The Insertion Loss Of Filter-integrated Spdt Switchmentioning

confidence: 99%

Absorptive Filter Integrated Single Pole Double Throw Switch Using Switchable T-Shape Resonator for Iot Applications

Shairi¹,

Zakaria²,

Wong³

et al. 2020

PIER C

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“…During band‐pass operation, the PIN diode (D) and the variable capacitance diodes (V1 & V2) were in the ON state. In this case, the even and odd mode admittances are derived as follows 22 :

Y_{o} = \frac{K_{1}^{2}}{Y_{s} - K_{2}}

Y_{e} = \frac{K_{1}^{2}}{Y_{s} + K_{2}}

…”

Section: Mathematical Modeling Of Ring Filter‐integrated Spdt Switchmentioning

confidence: 99%

Absorptive filter integrated single pole double throw switch using switchable ring resonator

Shairi

Zakaria

Zahari

et al. 2020

Int J RF Microw Comput Aided Eng

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In this paper, a reconfigurable ring resonator-based filter integrated switch (FIS) was presented. The FIS was made up of two absorptive ring resonators, reconfiguring between band-stop and band-pass responses, and integrated with single pole double throw (SPDT) switch. A simple mathematical analysis of isolation and insertion loss of filter-integrated SPDT switch was discussed. PIN diodes were used as the switching elements for the SPDT switch and to reconfigure between the band-stop and band-pass responses. The proposed absorptive FIS design could be used for wireless data communication systems such as Zigbee and Bluetooth at an operation frequency of 2.45 GHz. As a result, the proposed FIS exhibited 2 dB of insertion loss and better than 38 dB of isolation. Therefore, the key advantages of the proposed FIS design are low insertion loss, high isolation and good return loss at both ON-and OFF-state ports.

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Numerical investigation of novel switchable microwave band-stop to bandpass filters

Adoum

Wen

2014

2014 5th International Conference on Intelligent and Advanced Systems (ICIAS)

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Switchable matched band-stop filter for high power interference mitigation

Cited by 3 publications

References 9 publications

Absorptive Filter Integrated Single Pole Double Throw Switch Using Switchable T-Shape Resonator for Iot Applications

Absorptive Filter Integrated Single Pole Double Throw Switch Using Switchable T-Shape Resonator for Iot Applications

Absorptive filter integrated single pole double throw switch using switchable ring resonator

Numerical investigation of novel switchable microwave band-stop to bandpass filters

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