Antennas on high-impedance ground planes

Broas, R.F.J.; Yablonovitch, Eli

doi:10.1109/mwsym.1999.779612

Cited by 35 publications

(17 citation statements)

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“…There are many AMC structures described in the literature. Here, the hexagonal mushroom-like structure first described in [1]- [3] is used. The AMC structure is fabricated on a piece of 1.01 mm thick RT Duriod, r=2.2.…”

Section: Antenna and Amc Descriptionmentioning

confidence: 99%

“…2. The dimensions for W 1 , L 1 and L 2 are 29, 43.5 and 100 mm, respectively. Note the width of the AMC board is equal to its length, 100 mm.…”

Section: Antenna and Amc Descriptionmentioning

confidence: 99%

“…Sievenpiper developed and demonstrated highimpedance electromagnetic surfaces or artificial magnetic conductors (AMC) [1]- [3] to enable antennas to be placed near perfectly electrically conducting (PEC) surfaces. For example, a wire antenna placed horizontally over an AMC was demonstrated to have improved gain compared to the same antenna over a PEC [2], [4].…”

Section: Introductionmentioning

confidence: 99%

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Characteristics of planar monopole antenna on high impedance electromagnetic surface

Scardelletti

Jastram

Ponchak

et al. 2011

2011 IEEE Radio and Wireless Symposium

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-This paper presents for the first time measured characteristics of a planar monopole antenna placed directly on a high impedance electromagnetic surface or artificial magnetic conductor (AMC). The return loss and radiation patterns are compared between the antenna in free space, and when placed directly on a perfect electrical conductor (PEC), and on the AMC. The antenna measured in free space has a wide pass band from 3 to 10 GHz. The return loss for the antenna on the PEC is nearly all reflected back and the return loss for the antenna on the AMC has a 10 dB bandwidth from 7.5 to 9.5 GHz. The gain of the antenna in free space, on PEC and on AMC is 1, -12 and 10 dBi, respectively. This indicates that the AMC is working properly, sending all the radiation outward with little loss.

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Section: Antenna and Amc Descriptionmentioning

confidence: 99%

“…2. The dimensions for W 1 , L 1 and L 2 are 29, 43.5 and 100 mm, respectively. Note the width of the AMC board is equal to its length, 100 mm.…”

Section: Antenna and Amc Descriptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Characteristics of planar monopole antenna on high impedance electromagnetic surface

Scardelletti

Jastram

Ponchak

et al. 2011

2011 IEEE Radio and Wireless Symposium

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“…When used as planar reflectors [4], substrates [5], or high-impedance ground-planes [6], are able to eliminate the drawbacks of conducting ground-planes, to prevent the propagation of surface waves also allowing a lowering of the antenna profile, and to improve the radiation efficiency. In EBG resonator antennas [7]- [11], an electromagnetic crystal is employed as a superstrate on a primary radiator, backed with a ground plane, and its main effect is a considerable increase in the directivity.…”

Section: Introductionmentioning

confidence: 99%

Experimental Analysis of a Directive Antenna with a 3D-EBG Superstrate

Pajewski¹,

Frezza²,

Marciniak

et al. 2017

JTIT

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Abstract-A three-dimensional electromagnetic crystal is employed as a directivity-enhancing superstrate for planar antennas. The crystal is a woodpile made of alumina rods. In a shielded anechoic chamber, the performance of a patch antenna covered with the woodpile is measured. The superstrate is positioned at different distances from the antenna and its orientation is varied in the 8-12 GHz frequency range. The return loss, gain and radiation pattern in the E-and H-planes are measured. The electromagnetic behavior of Fabry-Perot cavities with woodpile mirrors, equivalent to the compound radiator, is also studied. The main effect of the crystal on the antenna performance is an enhancement of about 10 dB in maximum gain. A rather complete series of experiments is presented, highlighting the role of the periodic structure in the directivity enhancement and allowing a deeper understanding of the electromagnetic phenomena involved in EBG resonator antennas. Benefits and disadvantages of this kind of antennas are discussed and ideas for future research are given.

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“…Metamaterial is a composite material which does not exist in nature and is designed to mimic the specific characteristics, such as high-impedance planes (HIP) [5], electromagnetic bandgap structures (EBG) [6], artificial magnetic conductors [7] and so on. Metamaterial has been widely used and extended in wireless communications.…”

Section: Introductionmentioning

confidence: 99%

A Novel Design of Low Profile Highly Directive Antenna With Partially Reflecting Surface Superstrate

Qi¹,

Jiao²,

Zhao³

et al. 2013

PIER Letters

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Abstract-This paper presents a new design of high-gain low-profile resonant cavity antenna. A novel partially reflecting surface (PRS) is adopted as the superstrate with the characteristics of high-reflection magnitude and low-reflection phase that allows the reduction of cavity height to about λ/8 and the enhancement of the gain by 10.73 dB. Several significant parameters that characterize the PRS superstrate are investigated based on the unit cell simulation. The measured results show that this method is effective, and this structure can provide a high-gain at the operating frequency. The measured results agree reasonably well with the simulated ones.

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Antennas on high-impedance ground planes

Cited by 35 publications

References 0 publications

Characteristics of planar monopole antenna on high impedance electromagnetic surface

Characteristics of planar monopole antenna on high impedance electromagnetic surface

Experimental Analysis of a Directive Antenna with a 3D-EBG Superstrate

A Novel Design of Low Profile Highly Directive Antenna With Partially Reflecting Surface Superstrate

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