Novel Notched UWB Filter Using Stepped Impedance Stub Loaded Microstrip Resonator and Spurlines

Uikey, Ramkumar; Sangam, Ramanand Sagar; Prasadu, Kakumanu; Kshetrimayum, Rakhesh Singh

doi:10.1155/2015/939521

Cited by 8 publications

(9 citation statements)

References 10 publications

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“…Band-notched filtering effect was achieved by adding a meander line slot to reject the undesired WLAN radio signals [10]. In [11], two spurline sections are employed to create a sharp band-notched filter for suppressing the signals of 5-GHz WLAN devices. In [12], a dual-mode fractal defectedground structure (DGS) bandstop filter is realized and connected with MMR; band-notched characteristics are realized.…”

Section: Introductionmentioning

confidence: 99%

Slot-Line UWB Bandpass Filters and Band-Notched UWB Filters

Guan¹

2019

UWB Technology and Its Applications

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Slot-line ultra-wideband (UWB) bandpass filters and band-notched UWB filters are presented for UWB systems. Three types of slot-line multimode resonators are proposed and studied. Microstrip feed lines are used to realize the desired strong external coupling in a simple manner. By properly allocating the resonant modes of resonator and external coupling, UWB bandpass filters have been realized. Next, microstrip resonators, i.e., open-loop resonator, stub-loaded dual-mode resonator, and triangular dual-mode ring resonator, are loaded to the slot-line; notched bands are realized in the UWB passbands. The design methodology has been verified by the measured results.

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Section: Introductionmentioning

confidence: 99%

Slot-Line UWB Bandpass Filters and Band-Notched UWB Filters

Guan¹

2019

UWB Technology and Its Applications

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“…A multiband BPF with good out of band filtering is designed using pseudo-interdigital coupling and stub loaded step impedance resonator is proposed in [7,8]. The harmonic suppressed short stub BPF is presented in [9] with suppressed 2 nd and 3 rd harmonics upto 10 GHz of frequency.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of Interdigital Coupled Ultra Wideband Bandpass Filter using Multimode Resonator

Bohra*,

Ghosh

2019

IJEAT

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In this paper, an interdigital coupled microstrip bandpass filter incorporated with shorted stub multi-mode resonator at ultra-wideband spectrum is presented. Proposed filter is characterized by its ultra compactness achieved through multi-mode resonator. The proposed filter is incorporated with interdigitated transmission line based on Lange Coupler topology. This structure enhances capacitive coupling between feed line and MMR which improves lower frequency selectivity of BPF. The parameters viz. fractional bandwidth of 105%, return loss above 20 dB and insertion loss below 1 dB at centre frequency of 4.875 GHz are recorded. The bandwidth of the filter is measured to be 5.15 GHz (2.3 to 7.45 GHz). The filter shows good linearity with its group delay recorded 0.2 ns with small variations of 0.1 ns at maximum in its passband. The compactness of proposed filter makes it suitable for various modern wireless applications.

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“…In the UWB region, there are several other narrowband radio signals, including wireless local area network (WLAN), which operate at 5.5 GHz. Therefore, a lot of attention has been paid to design single‐ or multi‐notched‐band UWB filters [10–17]. To suppress the undesired WLAN radio signals, a meander line slot is employed in [10] and a narrow notched band is achieved in [11] by using embedded open‐circuited stubs.…”

Section: Introductionmentioning

confidence: 99%

“…In [12], embedded open stubs with U‐shaped defected ground structure (DGS) are introduced to achieve a notch characteristic in the desired frequency band. Notched UWB filters were designed using complementary single split‐ring resonator (CSSRR) in the ground plane [13] and the spurline structure in the main line [14]. A dual‐notched bands UWB bandpass filter based on a simplified composite right/left‐handed resonator and a triple‐notched bands UWB bandpass filter using triple‐mode stepped impedance resonator, are developed in [15, 16], respectively.…”

Section: Introductionmentioning

confidence: 99%