Ku-band RF MEMS tunable comb line band reject filter on coplanar transmission line

Pradhan, Buddhadev; Gupta, Bhaskar

doi:10.1016/j.aeue.2012.11.003

AEU - International Journal of Electronics and Communications

2013

DOI: 10.1016/j.aeue.2012.11.003

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Ku-band RF MEMS tunable comb line band reject filter on coplanar transmission line

Buddhadev Pradhan

Bhaskar Gupta

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Cited by 10 publications

(2 citation statements)

References 15 publications

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“…MEMS tunable filters like their other tunable counterparts can be classified into two main types, that is, analog [7][8][9][10][11] and digital. [12][13][14][15] Analog MEMS tunable filters use MEMS varactors, and the digital type employ MEMS switches.…”

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confidence: 99%

“…4 The filters based on CPW transmission lines have some significant advantages, such as capability of using elements in series and parallel, no need to via, and low radiation loss. 10 During the past years, different methods have been utilized to design MEMS tunable filters. Diverse structures with wide tuning range and high performance are the main features of these designs.…”

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High‐quality coplanar waveguide tunable band‐stop filter using defected ground structure and comb‐line resonator with radio frequency microelectromechanical system varactors

Mirebrahimi

Dousti

Afrang

2020

Circuit Theory & Apps

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Summary A new analog tunable Ka‐band band‐stop filter is proposed on high resistivity silicon (HRS) substrate using radio frequency microelectromechanical systems (RF MEMS) varactors for satellite and radar applications. The designed filter uses a λ/4 comb‐line resonator on the center line of a coplanar waveguide (CPW) with a new uncommon defected ground structure (DGS). Using the DGS in the proposed structure not only decreases the lateral size of the filter but also increases the quality factor. The tuning range of the proposed filter is 29.8–35.6 GHz with a maximum actuation voltage of 44.5 V and a band rejection between 37 and 45 dB. The quality factors of the designed filter in the up and down states of the MEMS varactors are 162 and 292, respectively. The equivalent circuit model of the filter is exactly extracted, and DGS dimensions are optimized. Based on the frequency simulation using ANSOFT HFSS 14, the insertion loss of the designed filter is about 0.51 dB in the 0–20 GHz range and 2 dB in the 0–15 GHz range in, respectively, up and down state of the bridge. The return losses are 0.51 and 0.33 dB at the center frequency for the up‐ and down‐state configuration of the bridge. A step‐by‐step fabrication process is also proposed for designing the band‐stop filter. High quality factor, small size, and improved structure are the advantages of the proposed design.

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confidence: 99%

mentioning

confidence: 99%

High‐quality coplanar waveguide tunable band‐stop filter using defected ground structure and comb‐line resonator with radio frequency microelectromechanical system varactors

Mirebrahimi

Dousti

Afrang

2020

Circuit Theory & Apps

View full text Add to dashboard Cite

show abstract

Design and analysis of a RF MEMS shunt switch using U-shaped meanders for low actuation voltage

2020

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MEMS tunable filters based on DGS and waveguide structures: a literature review

Mirebrahimi

Dousti

Afrang

2021

Analog Integr Circ Sig Process

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Ku-band RF MEMS tunable comb line band reject filter on coplanar transmission line

Cited by 10 publications

References 15 publications

High‐quality coplanar waveguide tunable band‐stop filter using defected ground structure and comb‐line resonator with radio frequency microelectromechanical system varactors

High‐quality coplanar waveguide tunable band‐stop filter using defected ground structure and comb‐line resonator with radio frequency microelectromechanical system varactors

Design and analysis of a RF MEMS shunt switch using U-shaped meanders for low actuation voltage

MEMS tunable filters based on DGS and waveguide structures: a literature review

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