An EH<sub>0</sub>-Mode Microstrip Leaky-Wave Antenna With Transversal Single Beam via Periodical Loading of Shorting Pins and U-Shaped Slots

Duan, Junbing; Li, Zhu

doi:10.1109/lawp.2020.3027005

Cited by 15 publications

(7 citation statements)

References 9 publications

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“…Leaky-wave antennas (LWAs) based on microstrip line (MSL) have received extensive attention since the 1970s due to the advantages of simple structure, beamscanning capability with frequency, low profile, and low cost. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] Microstrip LWAs are divided into two categories based on the transversal mode of the host transmission line, including the usage of fundamental mode [4][5][6][7] and the higher-order modes. [8][9][10][11][12][13][14][15][16] The fundamental EH 0 -mode of the MSL is a non-leaky mode.…”

Section: Introductionmentioning

confidence: 99%

“…[8][9][10][11][12][13][14][15][16] The fundamental EH 0 -mode of the MSL is a non-leaky mode. Thus, some methods have been researched to excite the leaky mode on the EH 0 -mode MSL, such as introducing short pins 4,5 and exciting a pair of MSL under differential feedings. 6,7 Another method of using the EH 0 -mode MSL to radiate energy is utilizing the n = À1 harmonic as the leaky mode.…”

Section: Introductionmentioning

confidence: 99%

“…The fundamental EH 0 ‐mode of the MSL is a non‐leaky mode. Thus, some methods have been researched to excite the leaky mode on the EH 0 ‐mode MSL, such as introducing short pins 4,5 and exciting a pair of MSL under differential feedings 6,7 …”

Section: Introductionmentioning

confidence: 99%

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A periodic meandering microstrip line leaky‐wave antenna with consistent gain and wide‐angle beam scanning

Wang

Sun

Xue

2022

Int J RF Mic Comp-Aid Eng

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In this article, a periodic leaky‐wave antenna (LWA) with wide‐angle beam scanning and stable gain is proposed based on the meandering microstrip line. Due to the meandering property of the microstrip line, the longitudinal dimension of the antenna is reduced. Firstly, the radiation characteristic of the meandering microstrip line is analyzed in detail. Each corner of the meandering microstrip line is modeled by a shunt capacitance and shunt radiation conductance to acquire the equivalent circuit. Then, the frequency balanced condition is investigated based on the established equivalent circuit to realize continuous beam scanning through broadside. Subsequently, the method of open‐stop band (OSB) suppression is studied by introducing asymmetric perturbation on the LWA unit cell, which actually can be applied to eliminate the OSB effect in arbitrary symmetric LWAs. Finally, an antenna prototype is simulated and measured. The measured results agree well with the simulated results, validating the proposed method of OSB suppression. The measured results show that the designed antenna exhibits the beam scanning capacity of −47° to +76° with the frequency varying from 5.0 to 7.8 GHz and gain variation of 2.9 dB.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A periodic meandering microstrip line leaky‐wave antenna with consistent gain and wide‐angle beam scanning

Wang

Sun

Xue

2022

Int J RF Mic Comp-Aid Eng

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“…Since its discovery, the microstrip leaky wave antenna (MLWA) has been studied and enrolled in many applications. Because of their exciting frequency scanning capability, low profile, easy to match, and simple configuration, some MLWAs have been proposed to achieve a single‐beam scanning 1–5 . When a single radiator antenna covers two or more beams, it is called a dual/multi‐beam antenna.…”

Section: Introductionmentioning

confidence: 99%

“…Because of their exciting frequency scanning capability, low profile, easy to match, and simple configuration, some MLWAs have been proposed to achieve a single-beam scanning. [1][2][3][4][5] When a single radiator antenna covers two or more beams, it is called a dual/multi-beam antenna. The dual/multi-beam antenna can cover multiple areas and improve the link quality by reducing the number of antennas, 6,7 which makes it easier for the multi-station of a complex network.…”

Section: Introductionmentioning

confidence: 99%

A tunable ⵣ‐shaped microstrip leaky wave antenna based on liquid crystal

Soad

2022

Int J Communication

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This article presents an electrically tunable dual-beam ⵣ-shaped microstrip leaky wave antenna (MLWA) based on liquid crystal (LC). A new ⵣ-shaped microstrip component (Berber's alphabet: pronounced jzj) is proposed as a single unit-cell to achieve a dual-beam radiation pattern with adjustable dualbeam angles controlled by the ⵣ-shaped length-to-width ratio. The dual-beam radiation pattern of ⵣ-shaped microstrip is theoretically derived. The tunable dual-beam scanning is achieved using a nematic liquid crystal (N-LC). An AC voltage controls the permittivity of N-LC applied on the inverted radiating metal. The orientation angle of the N-LC molecules is also determined theoretically. Besides, the MLWA is rearranged due to the meandering configuration of its microstrip transmission lines, which reduces the antenna's size. As a result, this antenna has a symmetrical dual-beam at a pointing angle of ±37 in the YZ-plane. Furthermore, the proposed MLWA is tuned up to 25 at a fixed frequency in XZ-plane directions by applied AC voltage from 0 to 20 V, which changes the permittivity of the N-LC from 2.47 to 3.25, respectively. Meanwhile, the MLWA has a realized gain of up to 7.5 dB and a beam scanning range of 40 in the XZ-plane for all operating frequencies. Finally, the proposed antenna can be suitable for satellite and radar communication systems.

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AnEH₂‐mode microstrip leaky‐wave antenna with single beam radiation and backward‐to‐forward scanning

Liu

Wang

et al. 2022

Int J RF Mic Comp-Aid Eng

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In this work, a leaky-wave antenna (LWA) based on the second higher-ordermode (EH 2 -mode) microstrip line is proposed for achieving the backwardto-forward beam scanning and single main beam radiation. The original microstrip EH 2 -mode LWA inherently radiates two symmetric beams in the transversal plane. By loading a series of longitudinal slots, the dual-beam radiation of the antenna is converted into single-beam radiation. To achieve the continuous beam scanning, a series of transversal slots are further etched at each periodic cell correspondingly, where the frequency balanced condition could be satisfied for suppressing the open-stop band. Finally, a prototype of the proposed EH 2 -mode LWA is designed, implemented and fabricated. The measured results agree well with those results obtained from the simulation, validating the proposed method of single-beam radiation and OSB suppression.The designed antenna in the measurement can scan from À15 to +15 with the frequency varying from 4.7 to 5.4 GHz.

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An EH₀-Mode Microstrip Leaky-Wave Antenna With Transversal Single Beam via Periodical Loading of Shorting Pins and U-Shaped Slots

Cited by 15 publications

References 9 publications

A periodic meandering microstrip line leaky‐wave antenna with consistent gain and wide‐angle beam scanning

A periodic meandering microstrip line leaky‐wave antenna with consistent gain and wide‐angle beam scanning

A tunable ⵣ‐shaped microstrip leaky wave antenna based on liquid crystal

AnEH₂‐mode microstrip leaky‐wave antenna with single beam radiation and backward‐to‐forward scanning

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An EH0-Mode Microstrip Leaky-Wave Antenna With Transversal Single Beam via Periodical Loading of Shorting Pins and U-Shaped Slots

Cited by 15 publications

References 9 publications

A periodic meandering microstrip line leaky‐wave antenna with consistent gain and wide‐angle beam scanning

A periodic meandering microstrip line leaky‐wave antenna with consistent gain and wide‐angle beam scanning

A tunable ⵣ‐shaped microstrip leaky wave antenna based on liquid crystal

AnEH2‐mode microstrip leaky‐wave antenna with single beam radiation and backward‐to‐forward scanning

Contact Info

Product

Resources

About

An EH₀-Mode Microstrip Leaky-Wave Antenna With Transversal Single Beam via Periodical Loading of Shorting Pins and U-Shaped Slots

AnEH₂‐mode microstrip leaky‐wave antenna with single beam radiation and backward‐to‐forward scanning