A quad-polarization and frequency reconfigurable square ring slot loaded microstrip patch antenna for WLAN applications

Bharathi, A.; Merugu, Lakshminarayana; Rao, P.V.D. Somasekhar

doi:10.1016/j.aeue.2017.05.015

Cited by 35 publications

(9 citation statements)

References 18 publications

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“…Antennas with both linear (LP) and circular polarizations (CP) are useful in different electromagnetic enviroments. Various reconfigurable antennas have been designed using microstrip patch structures [3]- [7]. Metasurface (MS) has also been extensively studied recently in designing reconfigurable antennas [8]- [10].…”

Section: Introductionmentioning

confidence: 99%

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A Simple Design of Polarization Reconfigurable Fabry-Perot Resonator Antenna

Tran

Park

2020

IEEE Access

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This paper presents a simple design of high gain Fabry-Perot (FP) antenna with polarization diversity. The proposed antenna is composed of a reconfigurable microstrip patch, a partially reflective surface, and a planar metallic reflector. By electrically controlling the ON/OFF states of two p-in diodes, the polarization of the antenna can be switched among dual-sense circular polarization and single linear polarization. Notably, the biasing wires, which are generally used in designing reconfigurable antennas, are not necessary in the proposed design. Thus, the undesirable effects of the biasing wires on the antenna's operating characteristics can be eliminated. An antenna prototype, whose overall dimensions are 2.0λ× 2.0λ× 0.6λ at the center operating frequency, is fabricated and measured to validate the design concept. The measured overlapped bandwidth for-10 dB |S 11 | and 3-dB AR bandwidths of all polarization states is 4% (7.3-7.6 GHz). The desired radiation patterns are also observed with a peak gain of 15.1 dBi. INDEX TERMS Fabry-Perot, high gain, polarization reconfigurable, PRS.

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Section: Introductionmentioning

confidence: 99%

“…The gain of the aforementioned designs [3]- [16] is still limited to less than 10 dBi. Thus, they may not be suitable for some application scenarios, where both high gain and polarization reconfigurability are strongly demanded.…”

Section: Introductionmentioning

confidence: 99%

A Simple Design of Polarization Reconfigurable Fabry-Perot Resonator Antenna

Tran

Park

2020

IEEE Access

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“…The frequency reconfigurable microstrip antenna changes structure and current distribution by loading one or more electronic control components. Therefore, in order to ensure the communication system stability [15], antennas with tunable resonant frequency while other parameters remain substantially unchanged [16] are urgently needed. With the aims at tunable operation model, switches including RF MEMS [17], and PIN diodes, varactor diodes [18], lumped element,s and electronic radio frequency (RF) switching devices [19] are commonly used to design electrical frequency reconfigurable antennas [20].…”

Section: Introductionmentioning

confidence: 99%

Variode Enabled Frequency-Reconfigurable Microstrip Patch Antenna With Operation Band Covering S and C Bands

Guo¹,

Deng²,

Dong³

et al. 2020

PIER M

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A frequency continuous reconfigurable microstrip patch antenna with operation band covering S-band and C-band is introduced. The antenna consists of a central rectangular patch and four parasitic patches with a symmetrical structure, connected by four varactor diodes in the middle position of the edge of each patch. With help of HFSS microwave studio simulation, results have shown that, by altering the bias voltage on varactor diodes, the operated frequencies vary continuously within a wide range from 3.29 to 4.01 GHz and 5.35 to 7.00 GHz, which cover S-band and C-band. Further measurement, which verifies the simulation by reasonable agreement, has been carried out. Besides, this frequency reconfigurable antenna maintains broadside radiation and stable radiation pattern. Specifically, the gain is basically maintained at around 4.5 dBi with the working frequency increasing from 3.60 to 7.00 GHz. Compared with other frequency-reconfigurable antennas available in previous literature, the proposed antenna has advantages of a wide frequency tuning range, high frequency selectivity, simple and stable structure, low cost, and miniaturization, which make it a promising candidate as cognitive radio and future wireless communication systems.

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“…However, the reported antenna cannot be efficiently used with any planner and compact components due to its large dimensions and 3D geometry. Following that, a polarization and frequency-reconfigurable antenna is reported in [11]. The optical switches are inserted between the main monopole and the parasitic patch in [12] to achieve different frequency responses with a wider bandwidth and high gain at the cost of a large antenna size.…”

Section: Introductionmentioning

confidence: 99%

Low-Profile Frequency Reconfigurable Antenna for Heterogeneous Wireless Systems

et al. 2019

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A low-profile (0.21λ g × 0.35λ g × 0.02λ g ) and a simply-structured frequency-switchable antenna with eight frequency choices is presented in this paper. The radiating structure (monopole) is printed on a 1.6-mm thicker, commercially-available substrate of FR-4 ( r = 4.4, tanδ = 0.020). Specifically, it uses three PIN diodes in the designated places to shift the resonant bands of the antenna. The antenna operates at four different modes depending on the ON and OFF states of the PIN diodes. While in each mode, the antenna covers two unique frequencies (Mode 1 = 1.8 and 3.29 GHz, Mode 2 = 2.23 and 3.9 GHz, Mode 3 = 2.4 and 4.55 GHz, and Mode 4 = 2.78 and 5.54 GHz). The performance results show that the proposed antenna scheme explores significant gain (>1.5 dBi in all modes) and reasonable efficiency (>82% in all modes) for each mode. Using a high-frequency structure simulator (HFSS), the switchable antenna is designed and optimized. The fabricated model along with the PIN diode and biasing network is tested experimentally to validate the simulation results. The proposed antenna may also be combined in compact and heterogeneous radio frequency (RF) front-ends because of its small geometry and efficient utilization of the frequency spectrum.

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A quad-polarization and frequency reconfigurable square ring slot loaded microstrip patch antenna for WLAN applications

Cited by 35 publications

References 18 publications

A Simple Design of Polarization Reconfigurable Fabry-Perot Resonator Antenna

A Simple Design of Polarization Reconfigurable Fabry-Perot Resonator Antenna

Variode Enabled Frequency-Reconfigurable Microstrip Patch Antenna With Operation Band Covering S and C Bands

Low-Profile Frequency Reconfigurable Antenna for Heterogeneous Wireless Systems

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