Inset-Feed Frequency Reconfigurable Compact E-Shape Patch With DGS

In this research work a compact patch antenna which is reconfigurable for frequency is presented. Frequency reconfigurability is achieved by the use of two PIN diodes. Antenna operates over four frequencies, i.e., for WiMax (4.94 GHz), WLAN (5.35), and C-Band (6.25 and 6.83 GHz) applications. The overall dimension of antenna is 25 × 25 mm 2 , and an FR-4 substrate having dielectric constant of 4.4 and thickness 1.6 mm is used to fabricate the prototype of the proposed antenna. Different resonant frequencies are obtained by cutting a-slot and a U-slot in radiating patch and by modifying ground slot with a modified slotted structure. One diode is used in ground, and another PIN diode is used on the patch at an appropriate position. Maximum gain of 3.91 dBi and stable radiation characteristics and VSWR < 2 are obtained at the operating bands in simulation and measurement. The antenna elicits its novelty through compactness, portability for communication devices through combination of only two PIN diode switching in cellphones, tablets PCs, and other satellite communication devices operating in C-band as per FCC standard. A prototype of antenna is fabricated, and the measured and simulated parameters are in good agreement.

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“…Parallel resistance of OFF state diode R P also affects the gain of the antenna. The effect of R P on gain is more than R S [11].…”

Section: Resultsmentioning

confidence: 89%

A Compact Frequency Reconfigurable Printed Antenna for Wlan, Wimax Multiple Applications

Singh¹,

Sharma²,

Goswami³

2020

PIER C

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“…Using two varactor diodes, [5] designed a dual-band frequency reconfigurable patch antenna to cover WLAN bands at 2 GHz and a second band ranging from 5.3 to 5.8 GHz. For WLAN and WiMax applications, a new miniaturized switchable band microstrip patch antenna array with eight PIN-diodes was presented [6]. A triband slot antenna designed to cover the bands of 2.4, 5, and 3.5 GHz for WLAN and WiMAX applications using two PIN diodes was reported in [7], with a gain of less than 5 dBi for all operating frequencies.…”

Section: Introductionmentioning

confidence: 99%

High gain wideband and multi-band on-demand reconfigurable antenna for modern wireless application

Pandhare

Abegaonkar²,

Dhote

2022

Int. J. Microw. Wireless Technol.

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This paper proposes a wide band and multiband frequency reconfigurable antenna that can operate in the UWB, GSM, GPS, 4G LTE, WLAN, and WiMAX bands. The antenna is made up of a trapezoidal-shaped monopole radiator, which was inspired by a rectangular monopole antenna. The ground plane is modified by embedding T and L-shaped slots to notch the desired operating frequency. The proposed antenna can switch to six different frequencies using RF PIN diodes, making it suitable for modern wireless applications. A multilayer frequency selective surface (FSS) reflector is presented to improve the gain of the proposed reconfigurable antenna. The low-profile design achieved a significant increase in gain while retaining the UWB antenna's excellent impedance bandwidth. Because of the use of the FSS reflector, the antenna's average peak gain has increased from 6 to 10.4 dBi. The proposed antenna has a wide switching capability, which validates its unique feasibility for high-speed multiple Internet of Things applications via a common embedded platform under various applications.

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“…Efforts in compacting the size of microstrip patch antennas have been on the rise in the recent years due to such requirement in wireless communication devices [19]. Several methods are proposed in literature to reduce antennas size, defected ground structure (DGS) and defected microstrip structure (DMS) [20,21].…”

Section: Introductionmentioning

confidence: 99%

“…Several methods are proposed in literature to reduce antennas size, defected ground structure (DGS) and defected microstrip structure (DMS) [20,21]. Introduction of a DGS structure into the ground plane of an antenna results into variation of parameters such as capacitance and inductance, which alters the path of current flow and thus results in reduction of its size [19]. Several antennas have been miniaturized in size using different DGS structures on the ground plane, e.g.…”

Section: Introductionmentioning

confidence: 99%

A Frequency-Reconfigurable Microstrip Antenna with Constant Dipole-Like Radiation Patterns Using Single Bias, Triple Varactor Tuning with Reduced Complexity

Hossain

Sabapathy

Jusoh

et al. 2021

Wireless Pers Commun

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This work proposes a novel frequency-reconfigurable circular patch antenna incorporated with a rectangular slot and a narrow slot capable of producing constant dipole-like radiation patterns. The antenna compactness is achieved with the integration of the rectangular slot defected ground structure (DGS) on the ground. The proposed antenna is able to perform continuous frequency tuning between 1.91 GHz and 2.77 GHz with a frequency ratio of 1.5:1, in addition to stable dipole-like radiation patterns. The resonant frequency of the antenna is controlled by tuning a simple DC biasing network that consists of three RF varactor diodes located on the narrow slot DGS. Implementing the DC biasing network at the narrow slot DGS while maintaining the large slot DGS helps the antenna miniaturization and maintains the constant dipole-like radiation pattern over all frequency tuning range. The results are validated via simulations and experimental validations in terms of reflection coefficients and the radiation patterns. Measurements indicated that an impedance bandwidth of 85 MHz is featured for each tuned frequency band, with dipole-like patterns and an average gain of 1.57 dBi.

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Inset-Feed Frequency Reconfigurable Compact E-Shape Patch With DGS

Cited by 4 publications

References 20 publications

A Compact Frequency Reconfigurable Printed Antenna for Wlan, Wimax Multiple Applications

A Compact Frequency Reconfigurable Printed Antenna for Wlan, Wimax Multiple Applications

High gain wideband and multi-band on-demand reconfigurable antenna for modern wireless application

A Frequency-Reconfigurable Microstrip Antenna with Constant Dipole-Like Radiation Patterns Using Single Bias, Triple Varactor Tuning with Reduced Complexity

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