A novel crossed slotted patch dual‐mode bandpass filter with two transmission zeros

Wu, Sean; Weng, Min‐Hang; Jhong, Shih-Bin; Lee, Maw–Shung

doi:10.1002/mop.23219

Cited by 10 publications

(9 citation statements)

References 10 publications

(10 reference statements)

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“… patch resonator, a miniaturized dual-mode bandpass filter with two transmission zeros and low insertion-loss is developed and designed [5].…”

Section: Introductionmentioning

confidence: 99%

Dual-Mode Dual-Band Microstrip Bandpass Filter Based on Stepped Impedance Resonator (SIR) for Wireless Communication Applications

Lu¹,

Huang²,

Zhang³

et al. 2017

Proceedings of the International Conference on Communication and Electronic Information Engineering (CEIE 2016)

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In this letter, a dual-mode dual-band microstrip bandpass filter (BPF) based on stepped impedance resonator (SIR) for wireless communication applications is introduced. By choosing a proper impedance ratio, a BPF operating at 2.4/5.2 GHz is designed and analyzed. By adjusting the perturbation size, two degenerate modes are excited and coupled within the first passband. Two transmission zeros which further improve the performance of the BPF locate on both sides of the first passband. The fractional bandwidth (FBW) of the two passbands are 8% and 6%, respectively. The maximum insertion loss (IL) is better than 0.9dB and the return loss is better than -20dB.

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“… patch resonator, a miniaturized dual-mode bandpass filter with two transmission zeros and low insertion-loss is developed and designed [5].…”

Section: Introductionmentioning

confidence: 99%

Dual-Mode Dual-Band Microstrip Bandpass Filter Based on Stepped Impedance Resonator (SIR) for Wireless Communication Applications

Lu¹,

Huang²,

Zhang³

et al. 2017

Proceedings of the International Conference on Communication and Electronic Information Engineering (CEIE 2016)

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“…Dual-mode filters have been widely used in wireless communications systems because of their advantages in applications such as small size and low loss [1]. There are several commonly used dual-mode patch resonators including crossed slots [2,3], loaded crossed-slots [4], right crossed-slots [5,[10][11][12], slot etched [6], and fractal configurations [7-9, 13, 14] in a square patch. The arcoriented slot etched into a circular patch was used to design a dual-mode dual-band BPF [15].…”

Section: Introductionmentioning

confidence: 99%

Inter-digital coupled dual-mode patch resonator with crossed-island configuration for tri-band filter design

Yeh

Liu

et al. 2013

Int J RF and Microwave Comp Aid Eng

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The miniaturized dual‐mode tri‐band band‐pass filters (BPF) using crossed‐island patch resonator is proposed in this article. The BPF is mainly formed by a square patch resonator in which a crossed‐island configuration is embedded in the patch. The patch size reduction with 74.4% is achieved. By the perturbation and the alternative inter‐digital coupling, the tri‐band responses are obtained. The proposed filter covers the required bandwidths for WLAN band (2.26–3.11 GHz and 5.02–6.0 GHz) and X‐band (7.58–8.41 GHz) applications. Five transmission zeros are placed between three pass‐bands and resulted in a good isolation. © 2013 Wiley Periodicals, Inc. Int J RF and Microwave CAE 24:457–463, 2014.

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“…Dual-mode filters have been widely used in wireless communications systems because of their advantages in applications such as small size and low loss. As is well known, there are several commonly used dual-mode patch resonators including crossed slots [2,5], loaded crossed-slots [3], right crossed-slots [4,7,10,14], SIR [6], slot etched [15], and fractal configurations [8,9,[11][12][13]16] in a square patch. For miniaturization, five patches centered at 1.53, 1.595, 2.40, 14.125, and 2.15 GHz, with the size reductions of 50% [3], 58% [4], 24% [10], 53% [13], and 74% [15] respectively were proposed.…”

Section: Introductionmentioning

confidence: 99%

Miniaturized Dual-Mode Resonators With Minkowski-Island-Based Fractal Patch for Wlan Dual-Band Systems

Liu¹,

Liu²,

Yeh³

et al. 2012

PIER C

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The miniaturized dual-mode dual-band band-pass filters (BPF) using Minkowski-island-based (MIB) fractal patch resonators are proposed in this paper. The BPF is mainly formed by a square patch resonator in which a MIB fractal configuration with 2nd order iteration is embedded in the patch. By perturbation and interdigital coupling, the wide-band and dual-band responses are obtained respectively. For miniaturized wide-band design, at 2.41 GHz central frequency it has good measured characteristics including the wide bandwidth of 2.26-2.56 GHz (3-dB fractional bandwidth of 12.4%), low insertion loss of 0.72 dB, high rejection level (−52.5/−44.9 dB), and a patch size reduction with 60.6%. For compact dual-band design, the proposed filter covers the required bandwidths for WLAN bands . The patch size reduction of 78.1% is obtained. Two transmission zeros are placed between the two passbands and resulted in good isolation.

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A novel crossed slotted patch dual‐mode bandpass filter with two transmission zeros

Cited by 10 publications

References 10 publications

Dual-Mode Dual-Band Microstrip Bandpass Filter Based on Stepped Impedance Resonator (SIR) for Wireless Communication Applications

Dual-Mode Dual-Band Microstrip Bandpass Filter Based on Stepped Impedance Resonator (SIR) for Wireless Communication Applications

Inter-digital coupled dual-mode patch resonator with crossed-island configuration for tri-band filter design

Miniaturized Dual-Mode Resonators With Minkowski-Island-Based Fractal Patch for Wlan Dual-Band Systems

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