Journal ArticleDOI
Design of microstrip lowpass filter with compact size and ultra-wide stopband
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TLDR
In this paper, a microstrip low-pass filter with compact size and ultra-wide stopband is presented, which is able to suppress the 14th-harmonic response referred to a suppression degree of 15´dB, together with a small size of 0.089 λg × 0.081´g, where lg is the guided wavelength at 0.85´GHz.Abstract:
A new microstrip lowpass filter with compact size and ultra-wide stopband is presented. To achieve a compact design and ultra-wide band rejection, both triangular patch resonators and polygonal patch resonators are introduced in the filter. To reduce the circuit size of the filter further, the meander transmission line is also adopted in the design. A demonstration filter with 3 dB cutoff frequency at 0.85 GHz has been designed, fabricated and measured. Results indicate that the proposed filter is able to suppress the 14th-harmonic response referred to a suppression degree of 15 dB, together with a small size of 0.089 λg × 0.081 λg, where λg is the guided wavelength at 0.85 GHz.read more
Citations
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Journal ArticleDOI
Design of Sharp Roll-Off Lowpass Filter With Ultra Wide Stopband
TL;DR: In this paper, a microstrip lowpass filter is proposed to achieve an ultra wide stopband with 12th harmonic suppression and extremely sharp skirt characteristics, and the operating mechanism of the filter is investigated based on proposed equivalent-circuit model, and an overall good agreement between measured and simulated results is observed.
Journal ArticleDOI
Design of Compact Wide Stopband Microstrip Low-pass Filter using T-shaped Resonator
TL;DR: In this paper, a compact microstrip low-pass filter (LPF) using T-shaped resonator with wide stopband is presented, which has capability to remove the eighth harmonic and a low insertion loss of 0.12 dB.
Journal ArticleDOI
Design of lowpass filter using novel stepped impedance resonator
TL;DR: In this article, a new type of low-pass filter with an ultra-wide stopband, sharp transition and compact size is proposed, where a bended transmission line is adopted in the stepped impedance resonators.
Journal ArticleDOI
Analysis of Novel Approach to Design of Ultra-wide Stopband Microstrip Low-Pass Filter Using Modified U-Shaped Resonator
TL;DR: In this article, a microstrip low-pass filter is presented to achieve an ultra-wide stopband with 11 harmonic suppression and very sharp skirt characteristics, which is composed of a modified U-shaped resonator (which creates two fully adjustable transmission zeroes), a T-shaped resonance (which determines a cutoff frequency), and four radial stubs (which provide a wider stopband).
Journal ArticleDOI
Compact lowpass filter with a sharp roll-off using patch resonators
TL;DR: In this paper, a new compact microstrip lowpass filter with sharp roll-off and ultrawide stopband using funnel and triangular patch resonators is presented, and the experimental results show a good agreement with the simulated results and demonstrate that, the sharp rolloff and good stopband performance is obtained by the proposed filter.
References
More filters
Journal ArticleDOI
New Ultra-Wide Stopband Low-Pass Filter Using Transformed Radial Stubs
Kaixue Ma,Kiat Seng Yeo +1 more
TL;DR: In this article, a new type of low-pass filter with ultra-wide band rejection and compact size by using a proposed transformed radial stubs (TRSs) is introduced and investigated.
Journal ArticleDOI
Compact microstrip lowpass filter with sharp roll-off and wide stop-band
Jia-Lin Li,Shi-Wei Qu,Quan Xue +2 more
TL;DR: In this paper, a microstrip low-pass filter with enhanced performance is developed, which is based on a novel patch resonator that features strong slow-wave effects, and can also implement either an improved roll-off or an enhanced stop-band.
Journal ArticleDOI
Compact and selective lowpass filter with very wide stopband using tapered compact microstrip resonant cells
TL;DR: In this article, a microstrip low-pass filter is proposed, which consists of a simple tapered structure using periodical compact microstrip resonant cells, and the proposed lowpass filter has successfully addressed simultaneously the problems of compactness, matching, selectivity, insertion loss and the suppression of spurious frequency bands.
Journal ArticleDOI
Compact lowpass filter with wide stop-band using coupled-line hairpin unit
TL;DR: In this paper, a low-pass filter with sharp cutoff frequency response and wide rejection bandwidth is proposed to design a novel transmission line configuration, which is realized by a cascading microstrip coupled-line hairpin unit, defected ground structures and semi-circle stepped-impedance shunt stubs.