A coupled‐defected ground structure lowpass filter using inductive coupling for improved attenuation

Jung, Sang-Woon; Lim, Young-Kwang; Lee, H.‐Y.

doi:10.1002/mop.23419

Cited by 12 publications

(12 citation statements)

References 5 publications

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“…According to the report in [12], the reason may be attributed to the effect of the inductive coupling between the two arc-head slot. Figure 4 is the equivalent surface current distribution of the two arc-head slots at 3.6 and 5.0 GHz by simulation.…”

Section: Resultsmentioning

confidence: 93%

A Low-Pass Filter Based on the Slotted-Ground-Plane Horn-Shaped Resonator

Wang

2015

IETE Technical Review

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Designs of a miniaturized low-pass filter (LPF) using the slotted-ground-plane resonator are introduced in this paper. The proposed filter consists of a horn-head slot in the ground plane, two modified arc-head resonators, and a parasitic patch connected at the microstrip line. The horn-head slot, which is a modified type of a horn-shaped slot, provides good band-stop characteristics. To enhance rejection performance, a pair of the modified arc-head slot is embedded inside the hornhead resonator to increase additional transmission zeros into frequency characteristics. Furthermore, a parasitically circular patch is added at the microstrip line for frequency reduction and rejection enhancement. The surface current distributions are presented to explain the resonance mechanism. For the proposed LPF, the measured rejection bandwidth over ¡20 dB is from 1.75 to 12.0 GHz.

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Section: Resultsmentioning

confidence: 93%

A Low-Pass Filter Based on the Slotted-Ground-Plane Horn-Shaped Resonator

Wang

2015

IETE Technical Review

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“…3(b), the current circulation in both resonators takes either anti-clockwise or clockwise orientation simultaneously. As a result, the coupled CDGS resonators exhibit inductive coupling with negative mutual inductance effect [15] …”

Section: Resonator 1 Design and Circuit Modelingmentioning

confidence: 99%

High-Performance LPF Using Coupled C-Shape DGS and Radial Stub Resonators for Microwave Mixer

Belbachir¹,

Boussouis²,

Touhami³

2016

PIER Letters

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Abstract-A high-performance microstrip low-pass filter (LPF) with low cutoff frequency, negligible passband insertion loss, very sharp transition band, and deep ultra-wide stopband is designed, fabricated and measured. The presented filter is realized using three types of resonators which are coupled C-shape defected ground structure (C-CDGS), mirrored series-resonant branch loaded by radial stub and high impedance line loaded by radial stub. A novel equivalent circuit model of the C-CDGS resonator is created, and its corresponding parameters are also extracted. The proposed filter is experimentally verified through the measured results which show good agreement with electromagnetic simulations.

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“…Compared with the filters in [1,2,8] and [9], the proposed filter has a wide stopband, sharp rejection level and an extremely wide upper passband. Additionally, the size of the filter is much smaller than the reported filters in [1,2,8] and [9].…”

Section: Design and Measurement Of A Lpf Based On The Proposed Dgsmentioning

confidence: 99%

“…Among all these DGSs with different shapes, dumbbell-shaped defect ground structure (DB-DGS) is desirable because of its simple structure and wide stopband [5]. As a result, DB-DGS has been widely used to design compact lowpass filters with wide stopband [6][7][8][9]. However, it cannot provide a steep stopband characteristics required by some applications such as elliptic-function LPF owing to its lower Q characteristics.…”

Section: Introductionmentioning

confidence: 99%

A Novel Dumbbell-Shaped Defected Ground Structure With Embedded Capacitor and Its Application in Low-Pass Filter Design

Chen¹,

Li²,

Chen³

2015

PIER Letters

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Abstract-A novel dumbbell-shaped defected ground structure (DB-DGS) with embedded capacitor is presented in this paper. Compared with conventional DB-DGS structure, the proposed DB-DGS exhibits many attractive characteristics including double resonance, high Q value and compact size. The equivalent lumped circuit model for the novel DGS is developed, and its parameters are extracted. Based on this new DB-DGS, a low-pass filter (LPF) using the novel DB-DGS has been constructed, which provides a more steep rejection property, a wider stopband and compact size. The proposed structure is experimentally verified through the demonstration of a low-pass filter design.

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A coupled‐defected ground structure lowpass filter using inductive coupling for improved attenuation

Abstract: ABSTRACT:A coupled-defected ground structure (C-DGS)

Cited by 12 publications

References 5 publications

A Low-Pass Filter Based on the Slotted-Ground-Plane Horn-Shaped Resonator

A Low-Pass Filter Based on the Slotted-Ground-Plane Horn-Shaped Resonator

High-Performance LPF Using Coupled C-Shape DGS and Radial Stub Resonators for Microwave Mixer

A Novel Dumbbell-Shaped Defected Ground Structure With Embedded Capacitor and Its Application in Low-Pass Filter Design

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