Novel Bandpass Filters by Using Cavity-Loaded Dielectric Resonators in a Substrate Integrated Waveguide

Zhang, Dingding; Zhou, Liang; Wu, Lin‐Sheng; Qiu, Liang-Feng; Mao, Jun‐Fa

doi:10.1109/tmtt.2014.2314677

Cited by 41 publications

(13 citation statements)

References 18 publications

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“…DRs filters usually consist of a high permittivity DR, placed in a metallic cavity that limits studies available on DRs filters in microwave integrated circuit environment. Over the past few years, single-mode DRs filters have been investigated and widely used in the wireless industry [9][10][11]. However, the sizes of DR filters are still considered large.…”

Section: Introductionmentioning

confidence: 99%

“…The use of dual or higher order operation modes leads to size reduction, which is important for wireless communication systems. Substrate integrated waveguides (SIWs) have received considerable attention in the design of microwave filters because of the low loss, low cost, and easy integration of such waveguides [10]. In [10] a bandpass filter (BPF) by using a cavity-loaded dielectric rod in an SIW is demonstrated.…”

Section: Introductionmentioning

confidence: 99%

“…Substrate integrated waveguides (SIWs) have received considerable attention in the design of microwave filters because of the low loss, low cost, and easy integration of such waveguides [10]. In [10] a bandpass filter (BPF) by using a cavity-loaded dielectric rod in an SIW is demonstrated. This BPF is compact, has low insertion loss, and is easy to integrate with other microwave circuits.…”

Section: Introductionmentioning

confidence: 99%

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High Q-Factor Narrow-Band Bandpass Filter Using Cylindrical Dielectric Resonators for X-Band Applications

Karimzadeh-Jazi¹,

Honarvar²,

Khajeh-Khalili³

2018

PIER Letters

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Abstract-This paper presents a narrow-band bandpass filter (NBBPF) using three cylindrical dielectric resonators (CDRs) placed on three rectangular metallic cavities (RMCs). Two U-shaped planar resonators located between RMCs are used to realize narrow-band response effectively. The 3 dB fractional bandwidth (FBW) of the proposed filter is 0.275%. The filter is designed for Xband (9.85 GHz), with 20 MHz bandwidth for radar, satellite, and medical accelerators applications. High Q-factor (Q-factor = 400) and low fabrication cost are other advantages of the proposed design. The proposed NBBPF was fabricated, and its performance was measured to verify the design. Good agreement between the measured and simulated data is obtained.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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High Q-Factor Narrow-Band Bandpass Filter Using Cylindrical Dielectric Resonators for X-Band Applications

Karimzadeh-Jazi¹,

Honarvar²,

Khajeh-Khalili³

2018

PIER Letters

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“…The substrate integrated waveguide (SIW) [2] and the substrate integrated coaxial line (SICL) [3], are two proposals of substrate integrated circuits that have been a great advance in this field. Several passive components developed in these technologies, including filters [4,5], antennas [6,7], transitions and tapers [8,9], baluns [10,11], couplers [12,13], power dividers [14], and new transmission lines [3,[15][16][17][18], have been proposed. But although their quality factor and losses are better than those of the planar circuits, these characteristics can be further improved (without losing compactness and low cost manufacturing) if the dielectric substrate is removed and the waves are allowed to propagate through air.…”

Section: Introductionmentioning

confidence: 99%

Stop Band Continuous Profile Filter in Empty Substrate Integrated Coaxial Line

Gómez¹,

Esteban²,

Belenguer³

et al. 2018

Preprint

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Substrate integrated waveguides reduce the losses and increase the quality factor of resonators in communication filters when compared with traditional planar technologies, while maintaining their low cost and low profile characteristics. Empty substrate integrated waveguides go one step further, removing the dielectric of the substrate. One of these transmission lines is the empty substrate integrated coaxial line (ESICL), which adds the advantage of being a two conductor structure. Thus, it propagates a TEM mode, which reduces the dispersion and the bandwith limitation of other one conductor empty substrate integrated waveguides. Continuous profile filters, at the cost of being long structures, are very easy to manufacture and design (usually no optimization is needed), and they are highly insensitive to manufacturing tolerances. In this work a simple continuous profile filter, with a stop band response, is designed for the first time in the novel ESICL technology. The influence of the design parameters on the insertion losses and fractional bandwidth is discussed. A prototype has been successfully manufactured and measured. A sensitivity analysis shows the high tolerance of the proposed stop band filter to manufacturing errors.

show abstract

“…The substrate integrated waveguide (SIW) [2] and the substrate integrated coaxial line (SICL) [3] are two proposals of substrate integrated circuits that have been a great advance in this field. Several passive components developed in these technologies, including filters [4,5], ultra-wideband filters [6,7], antennas [8,9], transitions and tapers [10,11], baluns [12,13], couplers [14,15], power dividers [16], and new transmission lines [3,[17][18][19][20], have been proposed. However, although their quality factor and losses are better than those of the planar circuits, these characteristics can be further improved (without losing their compactness and low-cost manufacturing) if the dielectric substrate is removed and the waves are allowed to propagate through the air.…”

Section: Introductionmentioning

confidence: 99%

Stop Band Continuous Profile Filter in Empty Substrate Integrated Coaxial Line

et al. 2018

View full text Add to dashboard Cite

Substrate integrated waveguides reduce the losses and increase the quality factor of resonators in communication filters when compared with traditional planar technologies, while maintaining their low-cost and low-profile characteristics. Empty substrate integrated waveguides go one step further, removing the dielectric of the substrate. One of these transmission lines is the empty substrate integrated coaxial line (ESICL), which has the advantage of being a two-conductor structure. Thus, it propagates a transversal electric and magnetic (TEM) mode, which reduces the dispersion and the bandwidth limitation of other one conductor empty substrate integrated waveguides. Continuous profile filters, at the cost of being long structures, are very easy to manufacture and design (usually no optimization is needed), and they are highly insensitive to manufacturing tolerances. In this work, a simple continuous profile filter, with a stop band response, is designed for the first time using novel ESICL technology. The influence of the design parameters on the insertion losses and fractional bandwidth is discussed. A prototype has been successfully manufactured and measured. A sensitivity analysis shows the high tolerance of the proposed stop band filter to manufacturing errors.

show abstract

Novel Bandpass Filters by Using Cavity-Loaded Dielectric Resonators in a Substrate Integrated Waveguide

Cited by 41 publications

References 18 publications

High Q-Factor Narrow-Band Bandpass Filter Using Cylindrical Dielectric Resonators for X-Band Applications

High Q-Factor Narrow-Band Bandpass Filter Using Cylindrical Dielectric Resonators for X-Band Applications

Stop Band Continuous Profile Filter in Empty Substrate Integrated Coaxial Line

Stop Band Continuous Profile Filter in Empty Substrate Integrated Coaxial Line

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