A steerable leaky-wave antenna using a tunable impedance ground plane

Sievenpiper, Daniel F.; Schaffner, James H.; Lee, J.J.; Livingston, S.

doi:10.1109/lawp.2002.807788

Cited by 76 publications

(34 citation statements)

References 12 publications

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“…The positive reflection phase gradient in band gap structures has been used for achieving directional radiation characteristics from dipole antennas [21]. Nowadays, artificial magnetic conductor (AMC) inclusions have been used extensively for increasing the gain of microstrip and dipole antennas [11][12]. The AMC structures require shorting pins to be connected between the upper metal patch and the lower ground plane.…”

Section: Figure 5 Effect Of Variation In Grating Period L On Reflectmentioning

confidence: 99%

“…This can be overcome by loading textured High Impedance Surfaces (HIS) on the ground plane. The reflection from the HIS ground plane will be in phase with the incident radiation and hence radiation performance of the antenna is enhanced [11][12][13]. It is interesting to observe that an array of metal rods exhibits a special feature known as canalization in which the half wavelength Fabry-Perot resonant mode is excited yielding subwavelength imaging [14].…”

Section: Introductionmentioning

confidence: 99%

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Grating-based Dipole Antenna Configuration for High Gain Directional Radiation characteristics

Sarin¹,

Jayakrishnan

Aanandan³

et al. 2017

AEM

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The experimental and simulation studies of the radiation performance enhancement of a dipole antenna using metal strip grating are presented in this paper. The subwavelength imaging configuration of the metal strip grating is utilized for enhancing the radiation performance of the dipole antenna working in the S-band. The resultant design shows a gain of 9 dBi and a front to back ratio of -23 dB at resonance. The coupling between electric and magnetic resonances provides the necessary impedance matching performance when the antenna is brought in the vicinity of the grating.

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Section: Figure 5 Effect Of Variation In Grating Period L On Reflectmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Grating-based Dipole Antenna Configuration for High Gain Directional Radiation characteristics

Sarin¹,

Jayakrishnan

Aanandan³

et al. 2017

AEM

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“…But here, loading height is very small compared to the conventional metal backed dipole antennas thereby reducing the volume of the structure. In addition, the conventional AMC structures require shorting pins to be soldered between the upper patch and the ground plane [11] or more 3D magnetic inclusions should be stacked [12] which makes more fabrication complexities. But the design we have proposed is fully planar and hence it is devoid of fabrication complexities.…”

Section: Figure 6: Reflection Coefficient Of the Antennamentioning

confidence: 99%

“…The reflection from the HIS structure will be in phase with the incident wave and hence the radiation performance of the antenna can be improved. Another variation includes the Sievenpiper HIS backed dipole antenna in which the radiation pattern can be steered depending upon the Varactor diode bias voltage [12].The degenerate band edge effect offered by photonic crystals give highly directional antennas [13].…”

Section: Introductionmentioning

confidence: 99%

A Metamaterial Backed Dipole Antenna for High Gain Directional Communications

Sarin¹,

Jayakrishnan²,

Aanandan³

et al. 2016

AEM

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The enhanced radiation performance of a dipole antenna backed by the split ring resonator-continuous wire pair array working in the H ┴ excitation scenario is presented in this paper. The H ┴ excitation scenario of the metamaterial is used to get zero reflection phase resulting in enhanced gain performance. The two layer meta-structure along with the dipole is fabricated on a low cost substrate of dielectric constant 4.4 and height 1mm. The reflection and transmission characteristics of the metamaterial structure and its effect on the radiation performance of the dipole antenna are presented in this paper.

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“…8 A mechanically tunable impedance surface was developed to change the resonance frequency of each unit cell and the dispersion relation of the leaky wave, achieving a two-dimensional beam steering. 9 Researchers have also designed a varactor-tunable high impedance surface with a resistive-lumped-element biasing Grid. 10 Previous research on the AMC or high impedance surface can be traced back to the reflectarray antenna design.…”

Section: Introductionmentioning

confidence: 99%

Reflection characteristics of a composite planar AMC surface

Hwang

Tsai

2012

AIP Advances

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This study investigates the reflection characteristics of a composite Artificial Magnetic Conductor (AMC) surface consisting of multiple orthogonal gradient AMC surfaces arranged in a two-dimensional periodic pattern. The gradient AMC surface in this study consists of square metal patches of variable size printed on a grounded dielectric substrate. Due to the orthogonal placement of the gradient AMC surface, the incident energy of a plane wave normally incident on the composite AMC surface will be reflected into four major lobes away from the impinging direction. To achieve a systematical design, a simple formula based on array antenna theory was developed to determine the reflection pattern of the gradient AMC surface illuminated by a normal incident plane wave. A time-domain full-wave simulation was also carried out to calculate the electromagnetic fields in the structure and the far-field patterns. The scattering patterns of the structure were measured in an electromagnetic anechoic chamber. Results confirm the design principle and procedures in this research. Since such a composite AMC surface can be easily fabricated using the standard printed circuit board technique without via-hole process, it may have potential applications in beam-steering and radar cross section reduction

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A steerable leaky-wave antenna using a tunable impedance ground plane

Cited by 76 publications

References 12 publications

Grating-based Dipole Antenna Configuration for High Gain Directional Radiation characteristics

Grating-based Dipole Antenna Configuration for High Gain Directional Radiation characteristics

A Metamaterial Backed Dipole Antenna for High Gain Directional Communications

Reflection characteristics of a composite planar AMC surface

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