Dual-band reconfigurable bandstop filter with independently controlled stopbands and constant absolute bandwidths

Chen, Zhi-Han; Zhang, Shixuan; Chu, Qing‐Xin

doi:10.1109/mwsym.2017.8058736

Cited by 7 publications

(4 citation statements)

References 8 publications

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“…However, the presented data and results highlight the feasibility and advantages of using proposed MIM switch technology for reconfigurable filter applications. This technique could also be extended without distinction to all types of planar filter topology which are optimised for specific filtering characteristics using well known classic design techniques [19], or using hybrid topologies [3,20].…”

Section: Discussion On Overcoming Limitations Of Presented Designmentioning

confidence: 99%

“…Presented filter topologies are also limited to single point tuning for N1, and dual point tuning for N2, in comparison to the application using classic technology like PIN diodes [3,20], which exhibit continuous tuning in a certain frequency range. However, the novelty of presented work is 'non-volatility' of proposed MIM switches, which cannot be implemented with PIN diode switches.…”

Section: Discussion On Overcoming Limitations Of Presented Designmentioning

confidence: 99%

“…Electronically reconfigurable multiband filters could benefit in increased versatility by reducing the physical volume and signal processing budget of a system. A number of groups have successfully presented genius designs of electronically reconfigurable filters as in [1][2][3][4]. However, almost all these works utilise an active switching technology like a varactor or PIN diode or other solid state semiconductor switches to achieve the desired characteristics.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of integrated solid state nano‐ionic metal–insulator–metal switches for electronically reconfigurable band‐stop filter applications

Jayakrishnan

Vena

Sorli

et al. 2019

IET Microwaves, Antennas & Propagation

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A proof of concept of application of Nano-Ionic Conductive-Bridging Metal-Insulator-Metal (MIM) switches in electronically reconfigurable band stop filters, through design, and experimental results are presented in this article. Two similar designs of band stop filters with different mechanism of operation are proposed herewith. One is a microstrip, resonant open stub based band stop filter and the other is a microstrip tuned shorted stub based band stop filter. Electrical length of the stubs in both these devices are tuned by an integrated MIM switch forcing them to resonate at different frequencies and thus achieving electronically switchable band stop filtering characteristics. Working mechanism of the devices is validated with the help of developed electrical equivalent circuit models. Analysis on time stability of switch states for 1000 minutes with affirmative results is also presented herewith. These devices are fabricated without any soldered electrical components and without the use of any clean room technologies, using proven low cost method, and are promising to work at very-low power and have the potential to be directly printed on low cost flexible substrates like paper, for potential disposable applications.

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Section: Discussion On Overcoming Limitations Of Presented Designmentioning

confidence: 99%

Section: Discussion On Overcoming Limitations Of Presented Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Investigation of integrated solid state nano‐ionic metal–insulator–metal switches for electronically reconfigurable band‐stop filter applications

Jayakrishnan

Vena

Sorli

et al. 2019

IET Microwaves, Antennas & Propagation

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show abstract

“…In contrast, the filters in [12], [13] offer bandwidth tuning along with frequency tuning with lesser stopband rejections up to 20 dB. Similarly, the filters in [6], [14] demonstrate dual bandstop performance with frequency tuning, and the filter in [15] offers a dual-band operation with bandwidth tuning. Few of the common challenges faced by these filter structures include narrow bandwidths with limited tuning ranges and lack of sufficient rejections in the stopbands [11]- [15], which are among the most desired features when realizing reconfigurable RF front ends.…”

Section: Introductionmentioning

confidence: 98%

A Compact Reconfigurable 1-D Periodic Structure in GaAs MMIC With Stopband Switching, Dual-Band Operation and Tuning Capabilities

Shahid¹,

Thalakotuna

Karmokar

et al. 2021

IEEE Access

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This paper presents a systematic study of a compact and reconfigurable periodic structure in GaAs MMIC technology. Compactness is achieved by the introduction of spiral inductors in a conventional unit cell without disturbing the reactive loading mechanism. The proposed architecture exhibits a 28.3% wider stopband with 62.6% smaller footprint compared to a conventional structure. The compactness and bandwidth improvement in the proposed structure is explained with the help of dispersion and circuit analysis. The reconfigurability built into the design using PIN diodes allows stopband switching, dual-band operation and tuning capabilities with the mere use of a single reactive load in its unit cell. To the best of the authors knowledge, it is the first time a reconfigurable MMIC implementation is realized using the proposed structure or even the conventional design. As a guide to design, sensitivity analysis to filter performance is presented for important structure parameters. Switching element parasitics are discussed in two ways: firstly, with the design and measurement of structures with idealized switching conditions and in second, with the circuit and full-wave EM modelling of the finite periodic structure with the actual PIN diodes. The on-chip measurements of the fully reconfigurable filter show excellent agreement with simulations.

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References

2022

Non‐Volatile CBRAM/MIM Switching Technology for Electronically Reconfigurable Passive Microwave Devices

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Dual-band reconfigurable bandstop filter with independently controlled stopbands and constant absolute bandwidths

Cited by 7 publications

References 8 publications

Investigation of integrated solid state nano‐ionic metal–insulator–metal switches for electronically reconfigurable band‐stop filter applications

Investigation of integrated solid state nano‐ionic metal–insulator–metal switches for electronically reconfigurable band‐stop filter applications

A Compact Reconfigurable 1-D Periodic Structure in GaAs MMIC With Stopband Switching, Dual-Band Operation and Tuning Capabilities

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