A Novel Microstrip Dual-Band Bandpass Filter Using Dual-Mode Square Patch Resonators

Yeo, Kenneth Siok Kiam; Nwajana, Augustine O.

doi:10.2528/pierc12120312

Cited by 29 publications

(22 citation statements)

References 14 publications

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“…The BPF circuit model was designed based on the technique detailed in [18] and applied in [20]. As explained in [18], [20]; L, C and J are the inductance, capacitance and J-inverter values, respectively.…”

Section: Siw Designmentioning

confidence: 99%

“…The empirical formulation for w eff and l eff are given in (2) The test BPF reported in this paper was designed with the following specifications: center frequency f 0 , 1684 MHz; fractional bandwidth FBW, 4%; and passband return loss RL, 20 dB. The BPF circuit model was designed based on the technique detailed in [18] and applied in [20]. As explained in [18], [20]; L, C and J are the inductance, capacitance and J-inverter values, respectively.…”

Section: Siw Designmentioning

confidence: 99%

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Substrate Integrated Waveguide (SIW) Bandpass Filter with Novel Microstrip-CPW-SIW Input Coupling

Nwajana

Dainkeh

Yeo

2017

J. Microw. Optoelectron. Electromagn. Appl.

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Abstract-A Substrate integrated waveguide bandpass filter is presented with a novel CPW-to-SIW transition at both the input and output ports which also served as the input and output couplings into the filter. The CPW-to-SIW transition structures presented here exploited the step impedance between the 50 ohms input/output feedline and the transition to control the input/output couplings of the filter. The SIW filter is also shown to have very minimum milling or etching requirement which reduces the fabrication error. The proposed SIW filter has been validated experimentally and results presented. The results show that a simulated return loss of 15 dB and an initial measured return loss of 16 dB were achieved. An improved measured return loss of 22 dB was later achieved after some tuining adjustments were performed on the filter input and output couplings. A minimum insertion loss of 1.3 dB was also achieved across the band.

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Section: Siw Designmentioning

confidence: 99%

Section: Siw Designmentioning

confidence: 99%

Substrate Integrated Waveguide (SIW) Bandpass Filter with Novel Microstrip-CPW-SIW Input Coupling

Nwajana

Dainkeh

Yeo

2017

J. Microw. Optoelectron. Electromagn. Appl.

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“…As a very mature and popular technology, low temperature co-fired ceramic (LTCC) has attracted many people's interest in dual-band bandpass BPFs design in [11,12]. In [13], the dual-mode square patch resonator is employed to achieve a dual-band bandpass filter. In [14], a dual-mode dual-band BPF is proposed by using asymmetric square loop resonators, and a pair of bent open-circuited stubs is installed to the loop as perturbation stubs.…”

Section: Introductionmentioning

confidence: 99%

“…Several methods for multi-band BPFs have been previously proposed [11][12][13][14][15][16]. As a very mature and popular technology, low temperature co-fired ceramic (LTCC) has attracted many people's interest in dual-band bandpass BPFs design in [11,12].…”

Section: Introductionmentioning

confidence: 99%

Compact and High Selectivity Tri-Band Bandpass Filter Using Multipath-Embedded Resonators

Yang¹,

Wu²,

Zhu³

et al. 2014

PIER Letters

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Abstract-In this paper, a novel compact tri-band bandpass filter (BPF) with compact circuit size and high passband selectivity has been presented and implemented using multipath-embedded resonator (MER). This filter includes two multipath-embedded stepped impedance resonators (SIRs), connected with stub-coupling at the symmetric plane. By tuning admittance ratio and length ratio of the multipath-embedded resonator, it can be designed at 1.84, 2.45, 3.05 GHz. Through internal edgecoupling and extemal zero-degree feed lines, a tri-band BPF can be achieved with compact circuit size, high passband selectivity and low insertion loss. The measured results validate the full-wave EM simulated results with good agreement.

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“…[7] employed stepped impedance resonators (SIRs) in the design of dual-band BPF. [8] used a dual-mode square patch resonator.…”

Section: Introductionmentioning

confidence: 99%

Microstrip Dual-Band Bandpass Filter Using U-Shaped Resonators

Ogbodo¹,

Wang²,

Yeo³

2016

PIER Letters

Self Cite

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Abstract-Coupled resonators are widely used in the design of filters with dual-passband responses. In this paper, we present a dual-band bandpass filter using only couplings between adjacent resonators without cross-couplings. The dual-band bandpass filter with centre frequencies of 1747 MHz and 1879 MHz respectively is designed and fabricated using microstrip U-shaped resonators. Using the coupled resonator pair as a dual-band cluster, a miniaturised structure is achieved as compared to the conventional topology. The measured responses agree closely with the simulations.

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A Novel Microstrip Dual-Band Bandpass Filter Using Dual-Mode Square Patch Resonators

Cited by 29 publications

References 14 publications

Substrate Integrated Waveguide (SIW) Bandpass Filter with Novel Microstrip-CPW-SIW Input Coupling

Substrate Integrated Waveguide (SIW) Bandpass Filter with Novel Microstrip-CPW-SIW Input Coupling

Compact and High Selectivity Tri-Band Bandpass Filter Using Multipath-Embedded Resonators

Microstrip Dual-Band Bandpass Filter Using U-Shaped Resonators

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