2.45 GHz printed IFA on metallic environments: Clearance distance and retuning considerations

Casado, Félix; Arriolar, A.; Arruti, Egoitz; Parrón, J.; Ortego, I.; Sancho, I.

doi:10.1109/eucap.2012.6205978

Cited by 6 publications

(4 citation statements)

References 4 publications

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“…The changes of reflection characteristics are calculated for various antenna positions h from the infinite conducting plate. A minimum distance h that ensures an impedance matching is called a clearance distance of antenna [5]. In this paper, the clearance distance is determined from a minimum distance that both a relative bandwidth Δf /f 0 ≥ 5% at VSWR = 3 and a center frequency of f 0 = 2.45±0.05 GHz are realized.…”

Section: Clearance Distance Evaluation Of Reflection Characterismentioning

confidence: 99%

“…It has been reported that using an H-shaped antenna makes a near-field distribution smaller at a direction of obstacles [4], but the bandwidth of the H-shaped antenna is narrower than 2%. The other technique is the introduction of a reconfigurable matching network to tune an impedance mismatching due to metallic obstacles [5], but external circuits are needed for antenna implementations.…”

Section: Introductionmentioning

confidence: 99%

“…Its antenna structure realizes physical and electrical small sizes including the near field. The reflection characteristic of the developed antenna is evaluated for various conducting-plate positions, thereby showing that the clearance distance [5] from the antenna to a metal plate can be reduced, compared to a conventional lowprofile inverted-F antenna.…”

Section: Introductionmentioning

confidence: 99%

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A bandwidth-enhanced low-profile antenna for in-machine wireless harness communications and its clearance distance evaluation

Ohira

2013

2013 IEEE Antennas and Propagation Society International Symposium (APSURSI)

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This paper develops a bandwidth-enhanced lowprofile antenna suitable for a new emerging in-machine wireless communication used in a metal-rich confined volume. In the developed antenna, the combination of a slotted ground plane and a feeding patch realizes dual resonances for bandwidth enhancement. It also provides the stability of the reflection characteristic when the antenna is placed very close to metallic obstacles, without using any additional matching networks. The reduction of clearance distance, which is defined by a minimum antenna-metal distance, is confirmed by the comparison with a conventional low-profile inverted-F antenna.

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Section: Clearance Distance Evaluation Of Reflection Characterismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A bandwidth-enhanced low-profile antenna for in-machine wireless harness communications and its clearance distance evaluation

Ohira

2013

2013 IEEE Antennas and Propagation Society International Symposium (APSURSI)

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“…Current is mainly distributed in the horizontal portion and the ground short circuited portion of the antenna when the antenna is resonant [2].The proposed antenna has a low profile structure ,meanwhile the radiation field have polarization in both horizontal and vertical direction. Also, its good grounding design can improve the working efficiency of the antenna [3][4]. The entire antenna structure is roughly composed of three parts, namely, the ground plane, the dielectric layer and the antenna.…”

Section: Design Of the Antenna Modelmentioning

confidence: 99%

Design and Simulation of the Inverted F Antenna for RFID Tags

Wang

Yang

Feng

et al. 2013

AMM

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In this paper, an inverted F antenna works in the 5.8GHz frequency band is proposed. On the platform of Ansoft HFSS14 , the antenna’s return loss reaches -51.97dB at the center frequency 5.8GHz and the relative bandwidth is about 22.4％ when the return loss is less than -10dB. Also ,the size of the antenna is only 18mm*15mm. Compared with the existing antenna works in the same frequency band , the inverted F antenna proposed has a lower return loss and smaller physical size. The new designed antenna can be applied to the RFID system of road tolls and container management, which have certain values for application.

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