A New Class of Highly-Miniaturized Reconfigurable UWB Filters for Multi-Band Multi-Standard Transceiver Architectures

Kheir, Mohamed; Kroger, Thomas; Höft, Michael

doi:10.1109/access.2017.2670526

Cited by 13 publications

(10 citation statements)

References 24 publications

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“…Modern wireless communication applications usually work with multi-bands. A novel structure of the miniaturized ring resonator tuneable filter is proposed in Reference [63]. The filter is designed with a single element, multi-mode, adjustable line impedance and microstrip material.…”

Section: Figure12mentioning

confidence: 99%

“…In addition, PIN diodes and varactor switches are used to achieve a high-level capacity for tunability with different performances are achieved for bandwidths, resonant frequencies and stopband frequencies. Figure 14 shows a photograph of the filter [63].…”

Section: Figure12mentioning

confidence: 99%

“…Open-stub ring resonators and advanced microelectromechanical system (MEMS) switches were used, giving high selectivity for the passband and adjusted DC biasing voltage up to 25 V. Modern wireless communication applications usually work with multi-bands. A novel structure of the miniaturized ring resonator tuneable filter is proposed in Reference [63]. The filter is designed with a single element, multi-mode, adjustable line impedance and microstrip material.…”

Section: Figure12mentioning

confidence: 99%

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Recent Progress in the Design of 4G/5G Reconfigurable Filters

et al. 2019

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Currently, several microwave filter designs contend for use in wireless communications. Among various microstrip filter designs, the reconfigurable planar filter presents more advantages and better prospects for communication applications, being compact in size, light-weight and cost-effective. Tuneable microwave filters can reduce the number of switches between electronic components. This paper presents a review of recent reconfigurable microwave filter designs, specifically on current advances in tuneable filters that involve high-quality factor resonator filters to control frequency, bandwidth and selectivity. The most important materials required for this field are also highlighted and surveyed. In addition, the main references for several types of tuneable microstrip filters are reported, especially related to new design technologies. Topics surveyed include microwave and millimetre wave designs for 4G and 5G applications, which use varactors and MEMSs technologies.

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Section: Figure12mentioning

confidence: 99%

Section: Figure12mentioning

confidence: 99%

Section: Figure12mentioning

confidence: 99%

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Recent Progress in the Design of 4G/5G Reconfigurable Filters

et al. 2019

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“…However, tunable filters are widely used due to their reduced size, lower fabrication costs, and less circuit complexity. Some other technologies, such as RF microelectromechanical systems, yttrium‐iron‐garnet, varactor diodes, and PIN diodes, have been introduced in the previously published literature for tuning filters, which can be categorized into either discrete or continuous types.…”

Section: Introductionmentioning

confidence: 99%

A dual‐mode tunable bandpass filter for GSM, UMTS, WiFi, and WiMAX standards applications

Maragheh

Dousti

Dolatshahi

et al. 2019

Circuit Theory & Apps

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Summary This paper presents a dual‐mode tunable bandpass filter (BPF) for global system for mobile communication, universal mobile telecommunications system, wireless fidelity, and worldwide interoperability for microwave access standard applications. The proposed filter consists of a stepped‐impedance resonator, single resonator, and coupled line, which are loaded with varactors. The center frequency and bandwidth of the proposed filter can be tuned with tuning varactors. Furthermore, the measurement results show that the BPF can be tuned over the frequency range of 1.8 to 2.5 GHz. Moreover, the bandwidth can be changed at each certain frequency. Furthermore, using PIN diodes, a bandstop filter is added to the tunable BPF to reduce the out‐of‐band frequencies around the desired frequencies. The values of LC equivalent circuits are calculated, and the results are compared with those obtained from the layout of the proposed structure. Finally, the measurement results justify the simulation results.

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“…In recent years, the demand for compact microstrip filters is growing due to the newly expanding microwave and mobile communication systems [1][2][3][4]. In order to reduce the complexity and overall volume of such systems, compact and flexible structures like reconfigurable filters are used [5][6][7][8][9][10]. One of the advantages of these filters is their aptitude to reconfigure in frequency, consequently, reducing the area allocated to the various radio frequency (RF) front ends for different wireless communication standards incorporated into the final product.…”

Section: Introductionmentioning

confidence: 99%

Design and Development of Compact Reconfigurable Tri-Stopband Bandstop Filter Using Hexagonal Metamaterial Cells for Wireless Applications

Fertas¹,

Ghanem²,

Challal³

et al. 2019

PIER M

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In this paper, a compact reconfigurable tri-band bandstop filter (BSF) with sharp-rejection and high selectivity is presented. The proposed filter is based on a 50 Ohms microstrip feed line, six hexagonal metamaterial cells (HMCs) with different sizes and switches. The structure of the filter has seven different modes of operation characterized. A good agreement between the simulated and measured results is obtained. The results indicate that the proposed filter design, with overall size of 0.28λg × 0.17λg, is a good candidate for multiservice radios applications.

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A New Class of Highly-Miniaturized Reconfigurable UWB Filters for Multi-Band Multi-Standard Transceiver Architectures

Cited by 13 publications

References 24 publications

Recent Progress in the Design of 4G/5G Reconfigurable Filters

Recent Progress in the Design of 4G/5G Reconfigurable Filters

A dual‐mode tunable bandpass filter for GSM, UMTS, WiFi, and WiMAX standards applications

Design and Development of Compact Reconfigurable Tri-Stopband Bandstop Filter Using Hexagonal Metamaterial Cells for Wireless Applications

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