Compact quint-band microstrip bandpass filter using double-layered substrate

Hsu, Ko-Wen; Hung, Wei-Chung; Tu, Wen‐Hua

doi:10.1109/mwsym.2013.6697353

Cited by 26 publications

(27 citation statements)

References 8 publications

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“…Multiband multimode RF and Microwave bandpass filters (BPFs) in modern wireless communication systems have become indispensable building block due to its high selectivity, compact size, and low integration cost . Important applications of RF and Microwave BPFs are in satellite communication systems, WLAN, WiMAX, RFID, PCs, and so forth.…”

Section: Introductionmentioning

confidence: 99%

“…As a result, multiband BPFs are extensively investigated and various design methodologies have been reported. Due to increased demand of multiband filters, the design of quint‐band, quad‐band, and hext‐band BPFs based on stepped‐impedance resonators (SIRs) are reported in the literature by several researchers . A quint‐band BPF has been reported by Chen et al using tri‐mode SIRs .…”

Section: Introductionmentioning

confidence: 99%

“…This is the main disadvantage of the BPF reported in . Hsu et al have reported a double‐layered quint‐band BPF using five pairs of resonator (three pairs of SIRs and two pairs of slot resonators) . The presence of double‐layered structure and use of large number of resonators which increases size and fabrication complexity are the main disadvantages associated with this geometry .…”

Section: Introductionmentioning

confidence: 99%

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Compact quad‐band bandpass filter using internally coupled multimode stepped impedance resonator

Kumar

Pathak

2016

Micro & Optical Tech Letters

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This article reports the design and analysis of a quint‐band resonator using an internally coupled multimode stepped‐impedance resonator along with meandered λ/2 resonators. Resonance frequency of the fundamental even‐ and odd‐mode along with the first higher order mode of the proposed resonator has been selected to obtain resonances at first, second, fourth, and fifth pass band while other λ/2 resonator controls the occurrence of third pass band. This resonator has been used in the design of a miniaturized quad‐band bandpass filter where transmission zeros have been used to obtain quad‐band filter response for better selectivity. Full wave simulation results along with the measured characteristics of the resonator and filter are also presented. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:708–712, 2016

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Compact quad‐band bandpass filter using internally coupled multimode stepped impedance resonator

Kumar

Pathak

2016

Micro & Optical Tech Letters

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“…Most of them use planar transmission line resonators. For BPFs, they can be categorized into dual-band BPFs [14], triband BPFs [5]- [7], quad-band BPFs [8]- [23], quint-band BPFs [24], [25], and sext-band BPFs [26]. Although the papers for quad-band BPFs cited here are more than those for dual-band BPFs and triband BPFs, it should be noted that actually the situation is reverse as the design difficulty increases with more passbands.…”

Section: Introductionmentioning

confidence: 99%

“…In [24], a microstrip quint-band BPF based on trimode stub-loaded SIRs is proposed. In [25], a quint-band BPF using double-layered substrate is proposed. In [26], the proposed filter topology, by means of signal-interference techniques, allows frequencyselective transfer functions with multiple passbands separated by interband transmission zeros to be derived.…”

Section: Introductionmentioning

confidence: 99%

Design of Sext-Band Bandpass Filter and Sextaplexer Using Semilumped Resonators for System in a Package

Hsu

2015

IEEE Trans. Compon., Packag. Manufact. Technol.

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In this paper, using semilumped resonators, one sext-band bandpass filter and one sextaplexer are proposed. The two circuits are fabricated using microstrip technology, and the semilumped resonator consists of two identical microstrip lines and a chip inductor at the center. In comparison with conventional half-wavelength uniform resonator, the semilumped resonator is compact and has better control over harmonic frequencies. In addition, the two circuits utilize a distributed coupling technique to integrate bandpass channel filters. This technique has a low loading effect resulting in a high design freedom that is essential for multiband circuits. IndexTerms-Multiband bandpass filters (BPFs), multiplexers, semilumped resonators.

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Mixed‐coupling multi‐function quint‐wideband asymmetric stepped impedance resonator filter

Al‐Yasir

Parchin

et al. 2019

Micro & Optical Tech Letters

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A new mixed‐coupled quint‐wideband ASIR bandpass filter with low insertion loss and compact size is proposed: spiral and open‐loop coupled structures realize fundamental mode coupling and enhance another four spurious modes with optimum insertion loss. The fundamental frequency and four spurious frequencies are located at 1.275 GHz with fractional bandwidth (FBW) of 38.4%, 3.225 GHz with FBW of 38.4%, 5.875 GHz with FBW of 12.1%, 7.515 GHz with FBW of 13.7%, 9.74 GHz with FBW of 4.3%. The filter is suitable for multiple applications including GPS, Wi‐Fi and IEEE 802.11a, and partially for IEEE 802.16. The quint‐wideband filter has a performance superior to its currently proposed quint‐wideband counterparts.

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Compact quint-band microstrip bandpass filter using double-layered substrate

Cited by 26 publications

References 8 publications

Compact quad‐band bandpass filter using internally coupled multimode stepped impedance resonator

Compact quad‐band bandpass filter using internally coupled multimode stepped impedance resonator

Design of Sext-Band Bandpass Filter and Sextaplexer Using Semilumped Resonators for System in a Package

Mixed‐coupling multi‐function quint‐wideband asymmetric stepped impedance resonator filter

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