Compact Step-Impedance Ring Resonator for Quad-Band Band-Pass Filter

Feng, Wei; Huang, Qiulin; Wang, Xin Huai; Li, Wentao; Shi, Xiaowei

doi:10.2528/pierl13060405

Cited by 3 publications

(6 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, this variation can in general be represented by a Fourier series. A generalized expression for the normalized frequency in terms of normalized length of the slot can thus be given by Equation (11). This expression is written for nth resonant frequency with 'm' Fourier coefficients.…”

Section: Parametric Study For the Slot Width And Generalized Expressimentioning

confidence: 99%

See 1 more Smart Citation

Design and Analysis of Multi-Band Filters Using Slot Loaded Stepped Impedance Resonators

Khokle¹,

Kumar

Krishna³

et al. 2013

PIER B

View full text Add to dashboard Cite

Abstract-Two multi-band filters operating in the 1-10 GHz range are designed, analytically studied and experimentally verified. The filters are developed by making modifications to a series capacitively coupled, microstrip line filter. The middle section of the microstrip line is widened and rectangular slots are etched on it. Widening increases the effective dielectric constant which helps in miniaturization of the circuit. On the other hand, the rectangular slot cause various longitudinal, transverse and slot mode resonances to be excited resulting in multi-band operation. An extensive parametric analysis with respect to the physical parameters of the filter leading to the development of a semi-empirical model is presented. The model can be used to predict the resonant frequencies with sufficient accuracy for a given geometrical structure. The model also predicts the limit of miniaturization achievable with the presented design. The proposed filters besides being compact have good out of band rejection and are easy to design and fabricate without the need of additional matching circuits.

show abstract

Section: Parametric Study For the Slot Width And Generalized Expressimentioning

confidence: 99%

“…These multi-band filters are composed of one or more dual-band patch resonators often in the form of square, rectangular, triangular, circular, or other modified shapes as in [6,7]. More recently, the multi-band filters have also been realized utilizing the stepped impedance resonator concept [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of Multi-Band Filters Using Slot Loaded Stepped Impedance Resonators

Khokle¹,

Kumar

Krishna³

et al. 2013

PIER B

View full text Add to dashboard Cite

show abstract

“…Nowadays, researchers are more focused on developing miniaturized quad-, penta-, and sext-band BPFs. Different design topologies have been adopted to develop quad-band BPF [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23]. A popular method to design a quad-band BPF is by using stub-loaded topology [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Multi-Band Bandpass Filter Using Novel Topology for Next-Generation IoT Wireless Systems

Faisal¹,

Khalid²

2022

Computers, Materials &Amp; Continua

View full text Add to dashboard Cite

The design of single-and quad-band Bandpass Filter (BPF) topology has been presented in this paper for next-generation Internet of Things (IoT) devices. The main topology is constructed using the Split Ring Resonator (SRR), separated by the Anti-Parallel Coupled Line Structure (APCLS). A detailed analysis of APCLS has been presented, which is further used to construct the single-and quad-band BPF. The single-band BPF design consists of SRR loaded with APCLS. The developed single-band BPF displays a dual-mode response with a center frequency of 2.65 GHz and a measured fractional bandwidth of 17.17%. Moreover, a quad-band bandpass filter has been achieved using the same topology with minor modification in the SRR and APCLS electrical parameters. The developed quad-band BPF generates a dual-mode response having center frequencies of 1.2, 2.4, 3.5, and 4.7 GHz with the measured fractional bandwidth of 13%, 26%, 16%, and 5%, respectively. Two prototypes have been fabricated on the highfrequency substrate to validate the proposed topologies. Very high rejection in the stopbands region, little in-band insertion loss, and very selective passband have been measured for single-and quad-band BPFs. The measured and simulated results are well correlated.

show abstract

“…Quad-band bandpass filters have thrived in recent years [6][7][8][9][10][11][12][13]. In [6], a quad-band BPF is achieved based on splitting two passbands of a dual-band BPF by transmission zeros (TZs).…”

Section: Introductionmentioning

confidence: 99%

“…Recently, an attractive method utilizing a single multi-mode resonator has been applied to develop compact multi-band BPFs. In [10][11][12], quad-mode resonators that resonate at the four desired frequencies are used to present quad-band BPFs. In [13], a single stepped-impedance ring loaded resonator with eight resonant modes is utilized to create four passbands of a bandpass filter.…”

Section: Introductionmentioning

confidence: 99%

Compact Planar Quad-Band Bandpass Filter for Application in Gps, Wlan, Wimax and 5g Wifi

Honarvar¹

2016

PIER Letters

View full text Add to dashboard Cite

Abstract-In this paper, a novel compact second-order quad-band bandpass filter (BPF) is applied based on a novel quintuple-mode stub-loaded trigonal ring resonator. Resonant characteristics are extracted by even-and odd-mode method. Designing procedure of resonant frequencies has also been presented. The last two resonant modes are utilized to cover a wide bandwidth for 5G WiFi application. The rest of other three resonant modes are used to form three passbands for GPS, WLAN and WiMAX applications. According to pseudo-interdigital structure four transmission zeros are generated among passbands to improve the band to band rejection and enhance the frequency selectivity. The measurement results agree well with the EM simulation ones.

show abstract

Compact Step-Impedance Ring Resonator for Quad-Band Band-Pass Filter

Cited by 3 publications

References 17 publications

Design and Analysis of Multi-Band Filters Using Slot Loaded Stepped Impedance Resonators

Design and Analysis of Multi-Band Filters Using Slot Loaded Stepped Impedance Resonators

Multi-Band Bandpass Filter Using Novel Topology for Next-Generation IoT Wireless Systems

Compact Planar Quad-Band Bandpass Filter for Application in Gps, Wlan, Wimax and 5g Wifi

Contact Info

Product

Resources

About