Size reduction technique for shorted patches

Kan, H.K.; Waterhouse, R.B.

doi:10.1049/el:19990703

Cited by 71 publications

(33 citation statements)

References 3 publications

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“…Using high dielectric constant materials has been proposed [17][18][19], however, so far, only poor efficiency due to surface wave excitation and narrow bandwidth have been achieved. Also, the limited availability of low cost, low loss, high dielectric constant material is another problem with this method.…”

Section: Resultsmentioning

confidence: 99%

Design of Single Pin Shorted Three-Dielectric-Layered Substrates Rectangular Patch Microstrip Antenna for Communication Systems

Sharma¹,

Singh²

2008

PIER Letters

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Abstract-In this paper, we have simulated a single-pin-shorted microstrip line fed three-dielectric-layer (with different permittivity and thickness) rectangular patch microstrip antenna for all those communication systems whose limited antenna size is premium. Low permittivity hard foam has been used as one substrate to achieve wide bandwidth. The simulation of this proposed antenna has been performed by using CST Microwave Studio, which is a commercially available electromagnetic simulator based on the finite difference time domain technique.

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Section: Resultsmentioning

confidence: 99%

Design of Single Pin Shorted Three-Dielectric-Layered Substrates Rectangular Patch Microstrip Antenna for Communication Systems

Sharma¹,

Singh²

2008

PIER Letters

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“…Each solution is intended to optimize a certain parameter, such as frequency bandwidth, size, flatness, radiation pattern, polarization, etc. A number of interesting designs exist addressing some of these issues: folded configurations [8]- [11], surface etching techniques [12]- [16], shorting walls or pins [17], [18], or high dielectric constant materials [19], [20]. However, there is difficulty in obtaining good electrical performance (bandwidth, radiation pattern, gain) when reducing size, due to the minimum radiation Q attainable, associated with their actual field distribution, in accordance with the radiation fundamental limits for small antennas [21], [22].…”

Section: A Downsizing Designmentioning

confidence: 99%

Miniature multi-element antenna for wireless communications

Jofre

Cetiner

Flaviis

2002

IEEE Trans. Antennas Propagat.

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Abstract-We present a novel broad-band miniature antenna and employ it in a multi-element geometry with diversity capabilities for wireless communications. This antenna (diameter 0.2 and thickness 0.06 ) consists of two stacked circular patches that create two cylindrical slots resonating at two slightly different frequencies, fed by a strategically positioned coaxial probe. An extensive parametric study and results for a prototype working at 5.2 GHz are presented. A multi-element geometry with two or four of such elements follows. Microelectromechanical system (MEMS)-based switches located within its geometry can not only change the working frequency of the design, but also activate a particular radiation beam depending on their specific location (resonant slot-aperture or feed line). Simulation results of a four-element antenna with dimensions 0 8 0 8 0 06and a frequency band operation from 5 to 6 GHz are presented and compared to an experimental prototype. Circuit and radiation characteristics are discussed in terms of reconfigurability and diversity capabilities.Index Terms-Broad-band communications, diversity methods, mobile antennas.

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“…The earliest form of patch reduction was done by shorting the microstrip patch antenna size along the H-plane [9]. Further improvements about size reduction can be achieved by the help of multiple shorting posts instead of using one long and continuous metal strip across the H-plane [10][11][12]. Transmission-line modelling of rectangular microstrip patch antenna with shorting posts along the line of magnetic symmetry to demonstrate the change of antenna resonance frequency have also been discussed [13,14].…”

Section: Introductionmentioning

confidence: 99%

Extended Transmission-Line Modelling of Inset-Fed Reconfigurable Rectangular Microstrip Antennas

Majumdar¹

2016

PIER B

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Abstract-An extended transmission-line model is presented for an inset-fed rectangular microstrip patch antenna. The transmission-line model agrees to the cos 4 impedance variation for inset-fed microstrip antennas with an addition of a corrective extended feed length upto the inner radiating edge. Verification of the model's complex reflection coefficient is concluded with good agreements with measured results. Further extension of the transmission-line model with for or more thin shorting post connected to multiple varactor diodes have been conducted. Fourty two test cases across five independent antenna designs have been worked upon. Results obtained using the transmission-line model are compared with those obtained with a 3D full-wave solver and measurements. In 69% of the test cases, the transmission-line models have less than 3% deviation to the measured or simulated results. 41% of them have less than 1% deviation. For the first two antennas, both simulated and measured results were compared with the transmission-line model. For the rest of three, results from the transmission-line model were compared to the simulated ones.

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Size reduction technique for shorted patches

Cited by 71 publications

References 3 publications

Design of Single Pin Shorted Three-Dielectric-Layered Substrates Rectangular Patch Microstrip Antenna for Communication Systems

Design of Single Pin Shorted Three-Dielectric-Layered Substrates Rectangular Patch Microstrip Antenna for Communication Systems

Miniature multi-element antenna for wireless communications

Extended Transmission-Line Modelling of Inset-Fed Reconfigurable Rectangular Microstrip Antennas

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