Dual Polarized Reconfigurable Frequency Selective Surfaces

Sanz-Izquierdo, Benito; Parker, Edward A.

doi:10.1109/tap.2013.2292056

Cited by 69 publications

(52 citation statements)

References 26 publications

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“…A tunable patch-form FSS capable of modifying the frequency response in two polarisations was presented in [15]. A new simplified design is shown in Fig.1.…”

Section: Simplified Dual Polarized Active Fssmentioning

confidence: 99%

“…The two metallic layers sandwiching a 0.05mm thick dielectric substrate. The design operates in a similar way to that in [15] but uses half the number of resistors per cell (from 4 to 2), thus decreasing resistive losses and increasing efficiency. The other main difference between designs in [15] and the design in Fig.1 is the way they are controlled.…”

Section: Simplified Dual Polarized Active Fssmentioning

confidence: 99%

“…The design operates in a similar way to that in [15] but uses half the number of resistors per cell (from 4 to 2), thus decreasing resistive losses and increasing efficiency. The other main difference between designs in [15] and the design in Fig.1 is the way they are controlled. In Fig.1, the change in the capacitance of the varactors in the y-axis (upper layer) is carried out through a change in the voltage applied trough the resistors in the x-axis (upper layer).…”

Section: Simplified Dual Polarized Active Fssmentioning

confidence: 99%

“…In Fig.1, the change in the capacitance of the varactors in the y-axis (upper layer) is carried out through a change in the voltage applied trough the resistors in the x-axis (upper layer). In [15], the change in capacitance of the diodes in the y-axis is through voltage in the resistors in the same y-axis. In both cases, the voltage drop caused by the very small current flowing across the diodes can be neglected, especially when the array size is not large [15][16][17].…”

Section: Simplified Dual Polarized Active Fssmentioning

confidence: 99%

“…The active FSS layer is an improved version to the one presented by the authors in [15]. An active AMC structure based on this design is presented.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

An application of active frequency selective surface to reconfigurable antenna technology

Sanz-Izquierdo

Liang

Parker

et al. 2016

Active and Passive RF Devices Seminar

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Abstract-This paper illustrates the use of active frequency selective surfaces (FSS) in reconfigurable antennas. A patch-form dual-polarized tunable FSS is adapted for use as an active artificial magnetic conductor (AMC). As with the tunable FSS, the active AMC offers independent tuning capability of the reflection phases for two polarisations of incident EM waves. By combining the AMC with a wideband coplanar waveguide fed monopole antenna, circularly polarisation (CP) capability is realized at any frequency over the 1.15-1.60GHz band. Furthermore, the CP state can be switched between left hand CP and right hand CP, by simply interchanging the capacitances of varactors controlling the reflection phases of the two orthogonal polarised waves. The antenna covers the frequency bands of all operational and in-preparation satellite navigation systems, including GPS, GLONASS, Beidou and Galileo. polarization reconfigurable circular polarized (CP) antenna using active artificial ground (AG) structure Index Terms-CP antenna, frequency tunable, polarization switchable, active aritificial ground, satellite navigation.

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“…A tunable patch-form FSS capable of modifying the frequency response in two polarisations was presented in [15]. A new simplified design is shown in Fig.1.…”

Section: Simplified Dual Polarized Active Fssmentioning

confidence: 99%

Section: Simplified Dual Polarized Active Fssmentioning

confidence: 99%

Section: Simplified Dual Polarized Active Fssmentioning

confidence: 99%

Section: Simplified Dual Polarized Active Fssmentioning

confidence: 99%

“…The active FSS layer is an improved version to the one presented by the authors in [15]. An active AMC structure based on this design is presented.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

An application of active frequency selective surface to reconfigurable antenna technology

Sanz-Izquierdo

Liang

Parker

et al. 2016

Active and Passive RF Devices Seminar

Self Cite

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Reduction of wireless signals in indoor environments by using an active frequency selective wall based on spectrum sensing

Cho

Hong

2017

Int J Communication

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This paper presents a wireless local area network (WLAN) spectrum control system that uses active frequency selective shielding walls to selectively reduce or pass WLAN signals in the 5 GHz band indoors. The proposed system utilizes a wellknown active frequency selective structure based on a rectangular loop with PIN diodes and is thus capable of either reducing or passing the WLAN frequency by using the on/off switching of the PIN diode based on the measured electric field strength in indoor. We designed and simulated the proposed active frequency selective shielding wallpaper by using commercial electromagnetic simulation software and confirmed that the proposed structure can reduce the WLAN signal by switching the PIN diode by applying the manufactured prototype on the exterior of an experimental apparatus containing a WLAN receiver antenna that is capable of measuring the received electric field strength. Extension of the results presented herein can be applied to reduce the wireless signal to enhance the spectrum efficiency of an indoor space.KEYWORDS active frequency selective shielding, spectrum efficiency, spectrum sensing, wireless local area networks

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A switchable and tunable multifunctional absorber/reflector with polarization‐insensitive features

Costa

Wang

et al. 2021

Int J RF Mic Comp-Aid Eng

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A switchable and tunable multifunctional absorber/reflector with polarization‐insensitive performance is designed. The proposed structure comprises a switchable screen on the top layer, a tunable screen on the bottom layer and an air spacer in between. PIN diodes are employed in the switchable structure to provide multiple switchable states (dual‐polarized absorber, dual‐polarized reflector, TE/TM wave absorber/reflector and TM/TE wave absorber reflector) by actively controlling the feeding modes between “11” and “00” states. Tunable capability, are instead guaranteed by the tunable screen loaded with varactor diodes. The polarization insensitivity is guaranteed by constructing a super element, which is a combination of four similar unitary elements. To mitigate the adverse influence of the dedicated feed lines, independent coplanar and back feeding modes are configured to provide biases for PIN diodes and varactor diodes, respectively. Finally, a prototype of the proposed structure is fabricated and measured in a microwave anechoic chamber, and the measured results demonstrate both the switchable and tunable characteristics of the proposed multifunctional absorber/reflector.

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Dual Polarized Reconfigurable Frequency Selective Surfaces

Abstract: The version in the Kent Academic Repository may differ from the final published version. Users are advised to check http://kar.kent.ac.uk for the status of the paper. Users should always cite the published version of record.

Cited by 69 publications

References 26 publications

An application of active frequency selective surface to reconfigurable antenna technology

An application of active frequency selective surface to reconfigurable antenna technology

Reduction of wireless signals in indoor environments by using an active frequency selective wall based on spectrum sensing

A switchable and tunable multifunctional absorber/reflector with polarization‐insensitive features

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