Selectable multiband isolation of single pole double throw switch using transmission line stub resonator for WiMAX and LTE applications

Zakaria, Zahriladha; Shairi, N. A.

doi:10.1049/iet-map.2016.0868

Cited by 11 publications

(7 citation statements)

References 21 publications

(34 reference statements)

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“…Integrating filters and switches in a single circuit has the advantage of decreasing the cost as well as the circuit size and complexity. Lately a number of single-pole double throw (SPDT) reconfigurable BPFs are suggested [33][34][35][36][37][38]. In [33] a SPDT switchable BPF which is based on a capacitively multicoupled line using electromagnetic coupling to replace the quarter-wavelength line is demonstrated.…”

Section: Introductionmentioning

confidence: 99%

“…To achieve sharp passband selectivity SPDT switch with a BPF using the shorted stepped-impedance resonator technique can be adopted as in [35]. In [36] a new SPDT switch together with a switchable transmission line stub resonators are implemented to achieve a selectable multiband isolation whereas in [37] a new method using PIN diodes and SPDT switch is proposed to switch between two channels of a tunable diplexer. Lastly, a quasi-lumped element filter integrated with SPDT switch with low insertion loss and sharp passband selectivity is presented in [38].…”

Section: Introductionmentioning

confidence: 99%

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Novel Selective Feeding Scheme Integrated With SPDT Switches for a Reconfigurable Bandpass-to-Bandstop Filter

et al. 2021

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This paper demonstrates a new technique for designing high performance reconfigurable bandpass-to-bandstop filters by employing a ring resonator and a selective feeding scheme integrated with single-pole double-throw switches (SPDT). The transformation from bandpass-to-bandstop mode and viceversa is achieved by connecting or disconnecting two λ g /4 open-circuited stubs on the ring using PIN diodes. SPDT switches are employed for electronic switching between two different feeding line sections. In the bandpass state the resonator presents two transmission zeros near the edges of the passband and four attenuation poles inside the passband, enhancing the filter"s performance, thus achieving excellent sharp rejection with high roll-off-rate (ROR 20dB). On the other hand, high stopband rejection with wide bandwidth, good return loss and good skirt-band attenuation rates are achieved in the bandstop state. Even-and oddmode analysis is adopted and closed-form expressions are derived to describe the filter"s behaviour. To verify the validity of the proposed design, a prototype filter was fabricated and measured. In measurement, a 65% 3-dB bandwidth bandpass filter (BPF) with an insertion loss of 0.86 dB was switched to a 70% 20-dB bandwidth bandstop filter (BSF) with more than 40 dB stopband rejection. INDEX TERMS Bandpass filter (BPF), bandstop filter (BSF), PIN diodes, ring resonator, single-poledouble-throw (SPDT).

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Novel Selective Feeding Scheme Integrated With SPDT Switches for a Reconfigurable Bandpass-to-Bandstop Filter

et al. 2021

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“…An antenna with multiband functionality and frequency reconfigurability has been reported for switchable Bluetooth, WiMAX, and WLAN applications . PIN diodes have been added to SPDT switch design for wireless communication applications . Resonant modules have been used to design multiband mobile antennas using series LC resonant circuit.…”

Section: Introductionmentioning

confidence: 99%

A dual feed PIN diode based switchable multiband planar meandered antenna for intelligent transportation system application

Tripathi

Pathak

Parida

2019

Int J RF Microw Comput Aided Eng

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This article presents a dual feed switchable coplanar linearly polarized multiband meandered microstrip patch antenna. The antenna provides multiband functionalities with switching allowable at one of the nine adjacent frequencies. The proposed antenna, loaded with two symmetric PIN diodes, comprises dual-patch configuration and excited by coplanar microstrip feeds, it operates within 1 to 15 GHz frequency bands. The induced current of the antenna can be changed by switching the diodes, resulting in different operating frequency bands. The antenna has a nearly broadside radiation pattern and the impedance bandwidth is obtained up to 47% having a center frequency of 2.4 GHz for band range of 1 to 15 GHz. The measured gain of the antenna for 1. 57, 2.4, 4.5, 4.71, 5.9, 6.53, 7.59, 10.8, and 11.87 GHz are 5,5,7,6, 6.1, 4.4, 3.8,3.5, and 1.87 dBi, respectively. The antenna has advantages of the simple biasing network, easy fabrication, and adjustment. It is suitable for many modern wireless communication systems like intelligent transportation system. This antenna is also useful in direct broadcast satellite applications. K E Y W O R D Sdual feed, intelligent transportation system, meandered antenna, PIN diodes, switchable

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“…A reconfigurable coupler with tunable coupling coefficient range is proposed in [14]. In [15], a wideband branch-line coupler with 4 to 10 dB reconfigurable has been suggested by using RF MEMS [11]. In the same area, a planar quadrature coupler [3] with continuously tunable frequency has been also proposed.…”

Section: Introductionmentioning

confidence: 99%

A Novel Wide, Dual-and Triple-Band Frequency Reconfigurable Butler Matrix Based on Transmission Line Resonators

Seddiki

Nedil

Ghanem³

2019

IEEE Access

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In this paper, a novel reconfigurable Butler matrix based on transmission line resonators is presented and implemented. This matrix is built from embedding a reconfigurable multilayer directional coupler with an open stub resonator and p-i-n diodes to operate over three different states, such as dual band, triple band, and wideband. The coupler reconfigurability allows creating bandstop filters in the UWB band by controlling the p-i-n diode states in the quarter wave (λ/4) of the open stub resonator length. To demonstrate the design approach, two prototypes of coupler and Butler matrix are fabricated and tested. Good agreement between the measured and simulated results is obtained. The proposed designs show good results in terms of compactness, low insertion loss, and high isolation with a minimal number of RF p-i-n diodes used for all states.INDEX TERMS Butler matrix, UWB coupler, reconfigurable, PIN diodes. FARID GHANEM received the bachelor's degree in electronics engineering from the Ecole Nationale Polytechnique of Algiers, in 1996, and the M.Sc. and Ph.D. degrees from the Institut National de la Recherche Scientifique, in 2007.

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Selectable multiband isolation of single pole double throw switch using transmission line stub resonator for WiMAX and LTE applications

Cited by 11 publications

References 21 publications

Novel Selective Feeding Scheme Integrated With SPDT Switches for a Reconfigurable Bandpass-to-Bandstop Filter

Novel Selective Feeding Scheme Integrated With SPDT Switches for a Reconfigurable Bandpass-to-Bandstop Filter

A dual feed PIN diode based switchable multiband planar meandered antenna for intelligent transportation system application

A Novel Wide, Dual-and Triple-Band Frequency Reconfigurable Butler Matrix Based on Transmission Line Resonators

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