Single/multi-band Wilkinson-type power dividers with embedded transversal filtering sections and application to channelized filters

Gómez‐García, Roberto; Loeches-Sánchez, Raúl; Psychogiou, Dimitra; Peroulis, Dimitrios

doi:10.1109/tcsi.2015.2418838

Cited by 104 publications

(42 citation statements)

References 20 publications

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“…Besides, as in the 3-D filter in [12] that only considers one embedded tunable stopband in its passband range, equivalent multiband bandpass filtering transfer functions with controllable center frequencies and bandwidths can be realized through this design technique. On the other hand, it should be noted that most of the prior-art dual-functionality filtering power dividers have restricted their operation to frequency-static transfer functions [23]- [27]. In relation to it, advances in the field of reconfigurable filtering power dividers have been limited to center frequency and bandwidth control of the passbands in single-and dual-band bandpassfiltering/power-distribution circuits as in [28]- [31].…”

Section: Introductionmentioning

confidence: 99%

Fully Adaptive Multiband Bandstop Filtering Sections and Their Application to Multifunctional Components

Psychogiou

Gómez‐García

Peroulis

2016

IEEE Trans. Microwave Theory Techn.

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An original RF design approach for the realization of fully reconfigurable planar multiband bandstop filters (BSFs) is reported. The engineered RF filtering topology allows independent control of its stopbands in terms of center frequency and bandwidth. It exploits the in-series cascade of K spectrally agile N-notch filtering cells that are connected through K − 1 static impedance inverters to realize an N-band filtering transfer function with K th-order stopbands. Each of these multinotch cells is formed by N tunable resonators-center-frequency control-that interact with the same nonresonating node by means of different variable couplings-bandwidth control. Additional features of this tune-all multiband BSF architecture when compared with related prior-art devices are: 1) scalability to the synthesis of an arbitrary number of stopbands; 2) notch-spectral-merging capability into wider eliminated bands of the same order, which equivalently allows the intrinsic control, i.e., without RF switches, of the amount of active rejected bands; and 3) smaller physical size. The coupling-matrix modeling of the conceived multiband BSF scheme is presented. Moreover, its cointegration with other RF analog-processing actions in multifunctional components, such as bandpass filtering and power division, is investigated. For experimental-validation purposes, three UHF-band mechanically reconfigurable microstrip prototypes are developed and tested. They correspond to a dual-notch filter, a wideband bandpass filter with embedded notches in its tunable passband, and a Wilkinsontype power divider with inserted stopbands for dynamic multiinterference mitigation.Index Terms-Bandpass filter (BPF), bandstop filter (BSF), multiband filter, multifunctional circuit, notch filter, power divider, reconfigurable filter, tunable filter, wideband filter.

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Section: Introductionmentioning

confidence: 99%

Fully Adaptive Multiband Bandstop Filtering Sections and Their Application to Multifunctional Components

Psychogiou

Gómez‐García

Peroulis

2016

IEEE Trans. Microwave Theory Techn.

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“…In order to meet a growing demand for multiband applications, multiband FPD designs are also necessary and receiving an increased attention. However, according to the authors' knowledge, most reports focused on dual‐band FPDs and only a few reports on multiband FPDs are found in References so far. In Reference , a triple‐band FPD is proposed by using coupled short‐ended stepped impedance resonators to substitute quarter‐wavelength transformers of conventional Wilkinson power divider.…”

Section: Introductionmentioning

confidence: 99%

A simple and effective design method for multiband filtering power divider

Tang

Zhang

Guan

et al. 2020

Int J RF Microw Comput Aided Eng

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This letter presents a simple and effective design method for multiband filtering power divider (FPD) in wireless communication systems. By elaborately coupling multiple pairs of stub‐loaded resonators (SLRs) with input/output feedlines, a flexible topology for multiband FPD is built. Not only can each pair of the SLRs generate one passband, but also control the respective center frequency and bandwidth independently. Meanwhile, isolation resistors are arranged between each pair of the SLRs to independently adjust each band isolation, finally achieving nice isolation over a wide frequency band. To validate the design concept, a prototype triple‐band FPD working at 1.30, 1.62, and 2.22 GHz is devised, simulated, and tested. Measurements have good agreement with simulations, indicating that the FPD has the advantages of its independently controllable frequency and bandwidth, high passband selectivity, and good isolation over a broadband frequency band.

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“…In Wu et al, a Wilkinson power divider operating at two different frequencies is presented. Some single‐band and dual‐band filtering power dividers have been implemented in Li et al Gomez‐Garcia et al applies the signal‐interference concepts in the realization of single/multi‐frequency filtering power dividers in planar/lumped‐element technologies. More examples can be found out in Tang and Chen, Gómez‐García et al, and Wu et al…”

Section: Introductionmentioning

confidence: 99%

Lumped‐element filtering power dividers

Xiao

2018

Circuit Theory & Apps

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A power divider is ideally a lossless reciprocal device performing vector summation of two or more input signals, which is an extremely important circuit component in wireless communication systems or radar systems. In this paper, a general concept of lumped-element power divider is discussed. Then, a semi-analytical synthesis technique is presented. General odd-mode and even-mode analysis method is proposed for multi-port symmetrical network and applied in the analysis of N-way lumped-element power dividers. The transmission networks and the matching networks can be synthesized step by step, which greatly simplify their analysis. The transmission networks can be synthesized by those well-known synthesis techniques for two-port networks, and thus the transmission property of power dividers can be accurately controlled. The matching networks are determined by optimization to ensure certain isolation between the output ports. The design procedure is simple and accurate. Apart from the capability of power division, power dividers are also able to play the role of impedance transform and signal processing. Some examples of power dividers with filtering capability are presented for demonstration. In this paper, a general concept of lumped-element power divider is discussed. Then, a semi-analytical synthesis technique is presented. General odd-mode and even-mode analysis method is proposed for multi-port symmetrical network and applied in the analysis of N-way lumped-element power dividers. Transmission networks and matching networks can be synthesized step by step, which greatly simplify their analysis. Apart from the capability of power division, power dividers are also able to play the role of impedance transform and signal processing. KEYWORDSfiltering power divider, general Chebyshev bandpass response, general odd-mode and even-mode analysis method, matching network, multifunctional power divider, transmission network

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Single/multi-band Wilkinson-type power dividers with embedded transversal filtering sections and application to channelized filters

Cited by 104 publications

References 20 publications

Fully Adaptive Multiband Bandstop Filtering Sections and Their Application to Multifunctional Components

Fully Adaptive Multiband Bandstop Filtering Sections and Their Application to Multifunctional Components

A simple and effective design method for multiband filtering power divider

Lumped‐element filtering power dividers

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