Wideband Quad-Polarization-Reconfigurable Bidirectional Antenna With a Simple Wideband Switchable Feeding Network

Liu, Min; Zhai, Zhen Jun; Feng, Lin

doi:10.1109/lawp.2023.3241987

Cited by 11 publications

(3 citation statements)

References 17 publications

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“…The antenna can be used in some narrow-band applications, for example, fixed (point-topoint) communications as the AR bandwidth of the proposed antenna is narrow [18]. The wideband feeding technique can be employed to broaden the AR bandwidth [12], [13]. Figs.…”

Section: Measurement Resultsmentioning

confidence: 99%

“…Realizing quad-polarization agile antennas still poses challenges in antenna designs [16]. In [12]- [14], quad-polarization switchable antennas are realized by a switchable feed network. Antennas that can switch beams [4], [8], [10], [21]- [27] can be achieved through various methods, such as modifying the antenna structure, using phased arrays, and utilizing different feeding ports.…”

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confidence: 99%

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A Quad-Polarization and Beam Agile Array Antenna Using Rat-Race Coupler and Switched-Line Phase Shifter

Hasan,

Nishiyama,

Toyoda

2023

IEEE Open J. Antennas Propag.

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This paper proposes a quad-polarized microstrip array antenna with beam steering capability. The proposed antenna consists of two patch elements, one rat-race coupler, and two 90 • switchable phase shifters. With the aid of just four PIN diodes, the two 90 • phase shifters can provide four different diode arrangements for each port of the rat-race coupler. The array elements are excited by using orthogonal feed lines. Due to the combination of the rat-race coupler and phase shifters, different phase conditions are generated between the patch elements or orthogonal modes of the patches. As a result, the proposed antenna can achieve two beams for each of four polarizations, i.e. two circular polarizations (CP) and two linear polarizations (LP). In the case of CP, the antenna can switch the beams between sum and difference radiation patterns. On the other hand, the beam can be tilted to ±15 • and ±12 • for horizontal and vertical LP states, respectively. A prototype of the antenna is manufactured and measured demonstrating results in accordance with simulation expectations. Measured results indicate that the 10-dB impedance covers from 5.6 to 5.9 GHz and the measured gains range from 7 to 8.5 dBic.INDEX TERMS circular and linear polarization, polarization-agile, reconfigurable antenna, switchable feed, pattern reconfigurable, beam-steering antennas I. INTRODUCTION

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Section: Measurement Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

A Quad-Polarization and Beam Agile Array Antenna Using Rat-Race Coupler and Switched-Line Phase Shifter

Hasan,

Nishiyama,

Toyoda

2023

IEEE Open J. Antennas Propag.

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“…The first thing to note is that while switching polarization states, it is necessary to maintain the stability of its operating frequency and radiation pattern. An effective method of switching polarization states is to change the position of the feed point through a controllable feed network [8]. Another feasible approach is to introduce RF switches on the antenna, thus changing the polarization state [9].…”

Section: Introductionmentioning

confidence: 99%

Wideband Multi-linear Polarization Reconfigurable Antenna for Wireless Communication System

Yang,

Kou,

2024

PIER Letters

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This letter presents a wideband multi-linear polarization reconfigurable antenna, which has the ability to switch among four linear polarizations at rotation angle of 45 • , namely 0 • , 45 • , 90 • , and −45 • . Its main structure consists of three layers of substrates and a reflective cavity. Four pairs of crossed bow-tie dipoles are used as the primary radiators, and the polarization switching is realized by controlling the ON/OFF states of four pairs of PIN diodes between feeding source and the dipoles. In addition, circular ring and reflective cavity structures are used for enhancing the operating bandwidth, stabilizing the radiation patterns, and increasing the gain. Finally, the simulation and measurement results both demonstrate that the antenna exhibits an overlapped impedance bandwidth of 42.6% (2.4 GHz-3.7 GHz) for all polarization states, and it remains a steady radiation pattern within the operating bandwidth. With these features, the design can be used in wireless communication systems in the 5G sub-6 GHz band.

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A miniaturized dual wide‐band polarization reconfigurable antenna integrated with artificial magnetic conductor for next‐generation wireless applications

Rajavel,

Ghoshal

2024

Int J Communication

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SummaryIn today's intricate wireless communication environment, ensuring system quality demands the use of a reliable and versatile antenna system. This research article introduces a polarization reconfigurable antenna integrated with a 4 × 4 Artificial Magnetic Conductor (AMC) surface. The AMC unit cell exhibits a triple‐band reflection phase response at 1.8GHz, 4.5GHz, and 5.5GHz, demonstrating double negative metamaterial behavior. The antenna features two distinct C‐shaped metal strips connected to two PIN diodes, enabling dynamic current distribution adjustment. Consequently, the proposed antenna offers three reconfigurable states, facilitating seamless switching between dual circular polarization (left and right‐hand circular polarization) and linear polarization. With a frequency coverage ranging from 1.29 to 2.52GHz and 3.59 to 6.15GHz, the antenna boasts a maximum axial ratio (AR) bandwidth of 31.96%. Additionally, it achieves a maximum peak gain of 5.5 dB and maintains front‐to‐back ratio (FBR) values exceeding 25 dB, while recording a minimum specific absorption rate (SAR) value of 0.1059 W/kg. The integration of the AMC surface ensures enhanced performance of the antenna. Experimental results from constructed prototypes closely align with simulation outcomes, validating the effectiveness of the proposed antenna. Consequently, this antenna holds significant promise for next‐generation wireless applications.

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Wideband Quad-Polarization-Reconfigurable Bidirectional Antenna With a Simple Wideband Switchable Feeding Network

Cited by 11 publications

References 17 publications

A Quad-Polarization and Beam Agile Array Antenna Using Rat-Race Coupler and Switched-Line Phase Shifter

A Quad-Polarization and Beam Agile Array Antenna Using Rat-Race Coupler and Switched-Line Phase Shifter

Wideband Multi-linear Polarization Reconfigurable Antenna for Wireless Communication System

A miniaturized dual wide‐band polarization reconfigurable antenna integrated with artificial magnetic conductor for next‐generation wireless applications

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