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High Spurious Suppression Bandpass Filter with Singly-Step Impedance Transmission Lines Compensation
2008 International Symposium on Communications and Information Technologies, 2008A simple technique to suppress spurious responses of microstrip bandpass filter is presented. This is achieved by employing the step impedance transmission line (SITL) compensated parallel-coupled line with enhance isolation/directivity to synthesis and implement the proposed bandpass filter. The optimum values of SITL parameters can be derive from the
S. Thanaputtiwirot +4 more
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Fourier coefficient design of stepped impedance transmission line networks
International Journal of Circuit Theory and Applications, 1973AbstractThe conventional method of designing stepped impedance transmission line networks from gain functions requires the use of a factorization process to obtain a passive input impedance, and then the application of Richards Theorem to determine the element values. A new technique is presented based upon the determination of the Fourier coefficients
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A suspended stripline bandpass filter using hybrid transmission line stepped impedance resonator
Microwave and Optical Technology Letters, 2016ABSTRACTIn this article, a suspended stripline bandpass filter using hybrid transmission line stepped impedance resonator (HTLSIR) is proposed. SSL has been proven to be an excellent transmission‐line system for realizing different types of filters.
ZhaoXu Xu +4 more
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2015 Asia-Pacific Microwave Conference (APMC), 2015
In this paper, a novel suspended stripline (SSL) bandpass filter using hybrid transmission line stepped impedance resonator (HTLSIR) is proposed. SSL has proven to be an excellent transmission-line system for realizing different types of filters. However, due to the effective permittivity being too close to unity, the size of the distributed elements ...
ZhaoXu Xu +5 more
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In this paper, a novel suspended stripline (SSL) bandpass filter using hybrid transmission line stepped impedance resonator (HTLSIR) is proposed. SSL has proven to be an excellent transmission-line system for realizing different types of filters. However, due to the effective permittivity being too close to unity, the size of the distributed elements ...
ZhaoXu Xu +5 more
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Journal of Physics D: Applied Physics, 2021
Abstract In this paper, a miniaturized tri-band bandpass filter (BPF) is proposed with a pair of quarter-wavelength shunted-line stepped-impedance resonators (SLSIRs). The resonant characteristics, high design freedom and tuning relationship of multi-dimension parameters of SLSIR are studied and applied to the tri-band design.
Ruolin Wang, Tao Zuo, Haiwen Liu
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Abstract In this paper, a miniaturized tri-band bandpass filter (BPF) is proposed with a pair of quarter-wavelength shunted-line stepped-impedance resonators (SLSIRs). The resonant characteristics, high design freedom and tuning relationship of multi-dimension parameters of SLSIR are studied and applied to the tri-band design.
Ruolin Wang, Tao Zuo, Haiwen Liu
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Proceedings of the Institution of Electrical Engineers, 1963
The coupling of two parallel transmission lines is utilized in directional couplers and filters which are simple to construct and have excellent electrical characteristics from high frequencies to microwave frequencies. The paper establishes the mathematical equivalence of such couplers to transmission-line stepped-impedance filters. It also places new
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The coupling of two parallel transmission lines is utilized in directional couplers and filters which are simple to construct and have excellent electrical characteristics from high frequencies to microwave frequencies. The paper establishes the mathematical equivalence of such couplers to transmission-line stepped-impedance filters. It also places new
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2017 IEEE MTT-S International Microwave and RF Conference (IMaRC), 2017
This paper presents a compact triple band bandpass filter on a microstrip line having one UWB and two narrow bands with a fractional bandwidth of about 12.85%, 30.38%, and 2.6% for use in 4G, WLAN and satellite communication. A new technique which involves embedding stepped impedance line (SIL) between the feed line and open stubs.
Prashant Ranjan +4 more
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This paper presents a compact triple band bandpass filter on a microstrip line having one UWB and two narrow bands with a fractional bandwidth of about 12.85%, 30.38%, and 2.6% for use in 4G, WLAN and satellite communication. A new technique which involves embedding stepped impedance line (SIL) between the feed line and open stubs.
Prashant Ranjan +4 more
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A simple stepped‐impedance transmission line load network for inverse Class F power amplifiers
Microwave and Optical Technology Letters, 2011AbstractIn this article, a novel simple load network with harmonic tuning, which is based on a stepped‐impedance transmission line is presented.Based on effect of a spectrum narrowing when poles of the reactance function are approaching adjacent zeros with higher transmission line impedance ratio, an open circuit at the second harmonic and a short ...
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International Journal of Microwave and Wireless Technologies, 2016
This paper presents the design of a size miniaturized and harmonic suppressed wideband double-section rat-race coupler (RRC). Series and shunt stepped-impedance transmission line units are proposed to replace the quarter wavelength transmission lines in the conventional design of wideband (50% fractional bandwidth) two-stage rat-race coupler.
Kanaparthi V. Phani Kumar +1 more
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This paper presents the design of a size miniaturized and harmonic suppressed wideband double-section rat-race coupler (RRC). Series and shunt stepped-impedance transmission line units are proposed to replace the quarter wavelength transmission lines in the conventional design of wideband (50% fractional bandwidth) two-stage rat-race coupler.
Kanaparthi V. Phani Kumar +1 more
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