Recent advances in reconfigurable microwave filters

Brito‐Brito, Zabdiel; Reyes, Juan Carlos; Llamas-Garro, Ignacio

doi:10.1109/imoc.2011.6169222

Cited by 7 publications

(3 citation statements)

References 108 publications

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“…RF-MEMS technology applied as a valuable candidate for widening reconfigurability in filters since the early 2000s [104], capitalizing on its intrinsic high quality factor (Q), negligible losses and power consumption, and simple biasing of its switches and lumped components. For the sake of completeness, semiconductors represent another common choice as tuning element, but they are employed only when a short switching time is a primary concern, due to their inconvenient losses and quality factor [105]. Filters can be evaluated on the basis of power handling and consumption, linearity and tuning speed, but features like Q, tuning range, Insertion and Return Loss, size and integrability with common electronic supports, remain the most accepted figures of merit.…”

Section: Filtersmentioning

confidence: 99%

A comprehensive overview of recent developments in RF-MEMS technology-based high-performance passive components for applications in the 5G and future telecommunications scenarios

Tagliapietra

Iannacci

2021

FACTA U EE

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The goal of this work is to provide an overview about the current development of radio-frequency microelectromechanical systems technology, with special attention towards those passive components bearing significant application potential in the currently developing 5G paradigm. Due to the required capabilities of such communication standard in terms of high data rates, extended allocated spectrum, use of massive MIMO (Multiple- Input-Multiple-Output) systems, beam steering and beam forming, the focus will be on devices like switches, phase shifters, attenuators, filters, and their packaging/integration. For each of the previous topics, several valuable contributions appeared in the last decade, underlining the improvements produced in the state of the art and the chance for RFMEMS technology to play a prominent role in the actual implementation of the 5G infrastructure.

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Section: Filtersmentioning

confidence: 99%

A comprehensive overview of recent developments in RF-MEMS technology-based high-performance passive components for applications in the 5G and future telecommunications scenarios

Tagliapietra

Iannacci

2021

FACTA U EE

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“…Furthermore, reconfigurable filters are a key component in low profile frequency agile communication systems where different frequency bands can be selected by using a single tunable filter with embedded tuning elements. Those elements can be electrical switches such as PIN or varactor diodes, mechanical switches such as MEMS or even use variable bias voltage to change the resonance frequency of the ferromagnetic materials [14].…”

Section: Introductionmentioning

confidence: 99%

Embedded Split Ring Resonator Tunable Notch Band Filter in Microstrip Transmission Lines

et al. 2022

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Novel design techniques for tunable and fixed frequency notch band filters are presented and validated with experiments. A notch band filter based on an Embedded Split Ring Resonator (ESRR) in a Microstrip Transmission Line (MTL) is presented. The physical dimensions of the ESRR determine the filter resonance frequency, which, when combined with a Varactor (Varactor Loaded ESRRs or VLESRRs), provides a continuously tunable resonance frequency. Tunable notch bands centered from 1.7 GHz to 4.8 GHz are obtained with resonators having an unprecedented electric length of 0.05 λ 0 at the lowest frequency, corresponding to a physical length of 7 mm and a total occupied area of 8.5 mm 2 . Two or more ESRRs are proposed to provide a deeper single notch band, a wider notch band, and/or multi notch bands. The proposed ESRRs are used jointly with a trapezoidal antenna to form 1) a notch band at 2.5 GHz; and, 2) dual notch bands at 2.5 GHz and 3.5 GHz. In addition, ESRRs are used in a Low Pass Filter (LPF) with cutoff frequency of 1 GHz to suppress undesired harmonic at 3.46 GHz and improve band rejection. The proposed MTL loaded by ESRRs, LPF and trapezoidal antenna are fabricated, measured and the results of simulations and measurements are in good agreement.INDEX TERMS Embedded ring resonator (ESRR), harmonics suppression, low pass filters (LPFs), microstrip transmission line (MTL), tunable notch band, wide band antenna.

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“…WiFi, WiMAX, LTE, WiBro, HiperLAN and etc.) [15][16][17][18][19][20]. The main reason is researchers and engineers have to design a RF front-end with less expensive and smaller size than simply putting multiple RF/microwave components next to each other.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Open Stub Resonator and its Application in Dual Isolation Band of SPDT Switch Design

Algumaei

Shairi

Zakaria

et al. 2016

IJECE

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In this paper, an analysis of open stub resonator is presented and its application in dual isolation band of Single Pole Double Throw (SPDT) switch is proposed. A mathematical model and the characteristic of the bandstop of the resonator were analyzed and discussed. The open stub resonator was implemented using the microstrip transmission line and able to switch between bandstop and allpass responses. Frequency bands of 2.3 and 3.5 GHz were chosen to demonstrate the dual isolation band in the switch design. The performance results of the SPDT switch showed that the isolation was greater than 30 dB, return loss was greater than 10 dB and insertion loss less than 2 dB at the center resonant frequency of 2.3 and 3.5 GHz. The potential application of the proposed dual isolation band of SPDT switch is for multi band RF front-end system such as WiMAX, LTE, WiFi and HyperLAN. Keyword:Bandstop to allpass Open stub resonator RF/Microwave switch SPDT switch Transmission line stub

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Recent advances in reconfigurable microwave filters

Cited by 7 publications

References 108 publications

A comprehensive overview of recent developments in RF-MEMS technology-based high-performance passive components for applications in the 5G and future telecommunications scenarios

A comprehensive overview of recent developments in RF-MEMS technology-based high-performance passive components for applications in the 5G and future telecommunications scenarios

Embedded Split Ring Resonator Tunable Notch Band Filter in Microstrip Transmission Lines

Analysis of Open Stub Resonator and its Application in Dual Isolation Band of SPDT Switch Design

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