Journal ArticleDOI
Balanced Bandpass Filter Using Stub-Loaded Ring Resonator and Loaded Coupled Feed-Line
Lei-Lei Qiu,Qing-Xin Chu +1 more
TLDR
In this article, a balanced bandpass filter is proposed based on stub-loaded ring resonators (SLRRs) and loaded coupled feed-lines (CFLs) with high selectivity and commonmode (CM) rejection.Abstract:
A balanced bandpass filter is proposed based on stub-loaded ring resonators (SLRRs) and loaded coupled feed-lines (CFLs) with high selectivity and common-mode (CM) rejection By controlling the coupling coefficient of the CFLs, three transmission poles within the differential passband are achieved The CFLs are loaded with open- and short-circuited stubs at the end of the traditional parallel-coupled feed-lines, which resulting in multiple transmission zeros (TZs) in differential mode (DM) and CM to improve the passband selectivity and CM suppression, simultaneously Finally, the proposed filter is designed and fabricated, the simulated and measured results are in good agreement The filter shows low insertion loss, multiple transmission zeros, high selectivity and enhanced CM rejectionread more
Citations
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Journal ArticleDOI
High Performance Single-Ended Wideband and Balanced Bandpass Filters Loaded With Stepped-Impedance Stubs
TL;DR: Two transmission zeros near the pass band are realized by using simple stepped-impedance stubs, which enhances the passband selectivity of these new filters.
Journal ArticleDOI
Compact single- and dual-band bandpass filters with controllable transmission zeros using dual-layer dual-mode loop resonators
TL;DR: In this article, an unbalanced microstrip bandpass filter (BPF) in dual-extended doublet topology with source-load coupling is presented and researched based on dual-layer capacitive-loaded dual-mode loop resonators.
Journal ArticleDOI
High-Order Balanced Superconducting Filter With High Selectivity, Low Insertion Loss, and Wide Stopband Range For Radio Astronomy
TL;DR: In this paper, a newly shunted-line stepped-impedance resonator (SLSIR) is studied and applied to realize high-order balanced filter design for radio astronomy application.
Journal ArticleDOI
Compact Balanced Single-Band and Dual-Band BPFs with Controllable Bandwidth Using FoldedS-Shaped Slotline Resonators (FSSRs)
TL;DR: In this paper, two compact balanced bandpass filters (BPFs) using half-wavelength folded S-shaped slotline resonators (FSSRs) are designed, which can affect the internal coupling of resonator and reduce the size of the resonator.
Journal ArticleDOI
High-Performance Common- and Differential-Mode Reflectionless Balanced Band-Pass Filter Using Coupled Ring Resonator
TL;DR: In this paper , the authors proposed a reflectionless balanced bandpass filter (BPF) using half-wavelength ring resonator, which can realize input/two-port wideband CM and DM reflectionless performance from dc, as well as wide filtering band and all-stop CM suppression.
References
More filters
Book
Microstrip filters for RF/microwave applications
TL;DR: In this paper, the authors present a general framework for coupling matrix for Coupled Resonator Filters with short-circuited Stubs (UWB) and Cascaded Quadruplet (CQ) filters.
Journal ArticleDOI
Combined differential and common-mode scattering parameters: theory and simulation
Abstract: A theory for combined differential and common-mode normalized power waves is developed in terms of even and odd mode impedances and propagation constants for a microwave coupled line system. These are related to even and odd-mode terminal currents and voltages. Generalized s-parameters of a two-port are developed for waves propagating in several coupled modes. The two-port s-parameters form a 4-by-4 matrix containing differential-mode, common-mode, and cross-mode s-parameters. A special case of the theory allows the use of uncoupled transmission lines to measure the coupled-mode waves. Simulations verify the concept of these mixed-mode s-parameters, and demonstrate conversion from mode to mode for asymmetric microwave structures. >
Journal ArticleDOI
A Differential-Mode Wideband Bandpass Filter on Microstrip Line for UWB Application
Teck Beng Lim,Lei Zhu +1 more
TL;DR: In this article, a differential-mode wideband bandpass filter (BPF) on microstrip line is proposed with good common-mode suppression, and the predicted and measured performances are in good agreement with each other.
Journal ArticleDOI
Novel Balanced Coupled-Line Bandpass Filters With Common-Mode Noise Suppression
TL;DR: In this paper, a novel balanced coupled-line bandpass filters, using suitable balanced coupled line sections and quarter-wavelength resonators, are proposed to achieve the desired differential-mode response and the level of common-mode noise.
Journal ArticleDOI
Compact and wideband microstrip bandstop filter
Ming-Yu Hsieh,Shih-Ming Wang +1 more
TL;DR: In this paper, a novel one-section bandstop filter (BSF) was proposed and fabricated by using single quarterwavelength resonator with one section of anti-coupled lines with short circuits at one end.
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Microstrip filter with multiple transmission zeros using shorted stub loaded resonators
Liang Wu,Wei Shen,Xiaowei Sun +2 more