A $Ka$-Band Fully Tunable Cavity Filter

Yassini, Bahram; Yu, Ming; Keats, Brian

doi:10.1109/tmtt.2012.2224367

Cited by 95 publications

(40 citation statements)

References 13 publications

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“…As the demand on communications systems that use multiple operating frequencies increases, design of frequency-tunable RF/microwave filters and multi-band filters has been of a great interest in the field of microwave engineering [1,2,3,4,5,6,7,8,9,10,11,12,13,14]. Particularly, study on frequency-tunable filters has been mainly motivated by increased necessity of frequency agility in next-generation communications systems and electronic-warfare systems.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Low-cost high-performance frequency-tunable substrate-integrated waveguide filter structure and fabrication method

Nam¹,

Koh²,

Lee³

et al. 2016

IEICE Electron. Express

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This paper presents a new frequency-tunable substrate-integrated waveguide (SIW) filter structure and its fabrication method. The center frequency of the filter is adjusted by moving the membrane structure in each resonator, and the presented fabrication method mainly focuses on how to minimize the number of fabrication steps for constructing the flexible membrane. Due to the simplified process, the filter has advantages of low cost and low risk fabrication. The comparison between a conventional fabrication procedure and the new proposed method is described. For verifying the presented filter structure and fabrication method, two frequency-tunable SIW bandpass filters of the presented structure have been implemented using the presented fabrication method. It is shown that the measured response agrees well with the simulated one. The minimum insertion loss is 0.85 dB, demonstrating that high quality factor can be achieved. Keywords: substrate integrated waveguide (SIW), filter, high Q, copper membrane Classification: Microwave and millimeter-wave devices, circuits, and modules References[1] R. Gomez-Garcia and X. Gong: IEEE Microw. Mag. 15 (2014) 28.

show abstract

Section: Introductionmentioning

confidence: 99%

“…On the other hand, waveguide cavity resonator filters have excellent electrical performance by virtue of the unbeatable Q-factor [4,5,6]. Tuning devices such as tuning plunger and tuning screws are usually used in adjusting the resonant frequency of each resonator, but only small frequency tuning ranges can be obtained.…”

Section: Introductionmentioning

confidence: 99%

Low-cost high-performance frequency-tunable substrate-integrated waveguide filter structure and fabrication method

Nam¹,

Koh²,

Lee³

et al. 2016

IEICE Electron. Express

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show abstract

“…In [1], a combline filter structure with continuously tunable center frequency and bandwidth is presented. In [2], a Ka-band fully tunable waveguide cavity filter with a continuous tuning performance is reported. In addition, frequency-tunable substrate-integrated waveguide bandpass and bandstop filter structures with adjustable responses are described in [3,4].…”

Section: Introductionmentioning

confidence: 99%

Frequency-tunable bandstop-bandpass dual-function microwave filter

Lee¹,

Lee²,

Park

et al. 2015

IEICE Electron. Express

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This letter presents a frequency-tunable, dual-function, microwave filter with both bandpass and bandstop functionalities. The filter uses a single switch to change the functionality minimizing the insertion loss, and it can replace a traditional filter bank structure that contains two filters and two switches. Frequency-tunable substrate-integrated waveguide (SIW) resonators are adopted in this filter design. Measured results show that both bandpass and bandstop responses can be tuned from 3.0 GHz to 3.6 GHz. The measured minimum insertion loss at the center frequency is 1.1 dB for the bandpass mode and the attenuation at the center frequency is greater than 40 dB over the entire frequency tuning range.

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“…Classical waveguide technology was, and in some cases still is, the mainstream for designing high-performance passive circuits and systems [48][49][50][51][52][53][54][55][56]. Higher Q u (> 1000) can be obtained using waveguide resonators exploiting the intrinsic high Q of waveguide structures.…”

Section: Tunable Microwave Filtersmentioning

confidence: 99%

“…Tunable filters based on mechanically tunable cavities (controlled for instance by customized sliding metallic walls driven by electrical stepper motors) can exhibit very high Q-factors (5000 − 10000) as shown in [49].…”

Section: Tunable Microwave Filtersmentioning

confidence: 99%

Substrate Integrated Coaxial Filters with Fixed and Tunable Responses

Sirci¹

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A $Ka$-Band Fully Tunable Cavity Filter

Cited by 95 publications

References 13 publications

Low-cost high-performance frequency-tunable substrate-integrated waveguide filter structure and fabrication method

Low-cost high-performance frequency-tunable substrate-integrated waveguide filter structure and fabrication method

Frequency-tunable bandstop-bandpass dual-function microwave filter

Substrate Integrated Coaxial Filters with Fixed and Tunable Responses

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