Journal ArticleDOI
Dual-band bandpass filters using equal-length coupled-serial-shunted lines and Z-transform technique
Lin-Chuan Tsai,Ching-Wen Hsue +1 more
TLDR
In this paper, a dual-band filter consisting of a bandstop filter and a wide-band bandpass filter in a cascade connection is presented, wherein the transfer functions of both the bandpass filters and bandstop filters are expressed in the Z domain.Abstract:
A synthesizing method is presented to design and implement digital dual-band filters in the microwave frequency range. A dual-band filter consists of a bandstop filter and a wide-band bandpass filter in a cascade connection, wherein the transfer functions of both the bandpass filter and bandstop filter are expressed in the Z domain. The bandstop filter is implemented by using a coupled-serial-shunted line structure, while the wide-band bandpass filter is constructed by using a serial-shunted line configuration. In particular, the bandwidth of each passband of the dual-band filter is controllable by adjusting the characteristics of both the bandpass filter and bandstop filter. By neglecting the dispersion effect between microstrip lines of different widths over a wide bandwidth, a dual-band filter is realized in the form of microstrip lines and its frequency responses are measured to validate this method.read more
Citations
More filters
Journal ArticleDOI
Dual-Band Bandpass Filters Using Stub-Loaded Resonators
TL;DR: In this paper, a stub-loaded resonator (SLR) was proposed for dual-band bandpass filters with three transmission zeros and four transmission zero on either side of both passbands.
Journal ArticleDOI
Design of microstrip bandpass filters with a dual-passband response
TL;DR: In this paper, the authors presented a rigorous design of microstrip bandpass filters with a dual-passband response in parallel-coupled and vertical-stacked configurations, where the second resonant frequency can be tuned over a wide range by adjusting its structure parameters.
Journal ArticleDOI
Design of Dual- and Triple-Passband Filters Using Alternately Cascaded Multiband Resonators
TL;DR: In this paper, a novel method for designing multiband bandpass filters has been proposed, which adds some extra coupled resonator sections in a single-circuit filter to increase the degrees of freedom in extracting coupling coefficients of a multiband filter.
Journal ArticleDOI
Design techniques for dual-passband filters
TL;DR: In this article, two possible approaches to the design of microwave filters presenting two passbands separated by one rejection band, which is created by suitably placing transmission zeros in the stopband, are presented.
Journal ArticleDOI
Dual-Band and Triple-Band Substrate Integrated Waveguide Filters With Chebyshev and Quasi-Elliptic Responses
Xiao-Ping Chen,Ke Wu,Zhaolong Li +2 more
TL;DR: In this paper, the synthesis and design techniques of dual-and triple-passband filters with Chebyshev and quasi-elliptic symmetric frequency responses are proposed and demonstrated for the first time on the basis of substrate integrated waveguide technology.
References
More filters
Book
Discrete-Time Signal Processing
TL;DR: In this paper, the authors provide a thorough treatment of the fundamental theorems and properties of discrete-time linear systems, filtering, sampling, and discrete time Fourier analysis.
Book
Foundations for microwave engineering
TL;DR: This paper presents a meta-modelling architecture for waveguiding systems that automates the very labor-intensive and therefore time-heavy and expensive process of designing and installingWaveguiding Systems.
Journal ArticleDOI
Parallel-Coupled Transmission-Line-Resonator Filters
TL;DR: In this article, the authors describe the synthesis of band-pass transmission-line filters consisting of series of half-wavelength resonant conductors such as strips, which differs from the usual end-coupled strip configuration in that successive strips are parallel coupled along a distance of a quarter wavelength.
Journal ArticleDOI
A design of the novel coupled-line bandpass filter using defected ground structure with wide stopband performance
TL;DR: In this article, a three-pole coupled-line bandpass filter with a microstrip configuration is presented, which uses defected ground structure (DGS) sections to simultaneously realize a resonator and an inverter.
Journal ArticleDOI
The Design of Coupled Microstrip Lines
TL;DR: In this paper, a new design procedure for coupled parallel microstrip lines is presented, which enables the geometry of the coupled lines to be obtained directly from the required even and odd-mode impedances and uses single microstrip-line geometry as an intermediate step.