A Lumped-Circuit Model for a Triband Trapped Dipole Array-Part 1: Model Description

Coburn, William O.; Fazi, C.

doi:10.1109/lawp.2008.917604

Cited by 5 publications

(3 citation statements)

References 1 publication

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“…Inserting passive frequency selective switches known as "traps" is a known technique for the multi-band operation from a single /2 dipole element [1][2][3], particularly for high frequency applications. The dipole would be resonant at the lowest frequency of interest with trap pairs placed accordingly to achieve higher frequency resonances.…”

Section: Introductionmentioning

confidence: 99%

Utilizing everyday metallic structures as UHF RFID antennas

Taylor

Batchelor

2018

12th European Conference on Antennas and Propagation (EuCAP 2018)

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Section: Introductionmentioning

confidence: 99%

Utilizing everyday metallic structures as UHF RFID antennas

Taylor

Batchelor

2018

12th European Conference on Antennas and Propagation (EuCAP 2018)

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“…They are commonly used in antenna designs, particularly at HF allowing for multi-band operation of a single element antenna, such as a Ȝ/2 dipole from a single coaxial feed without the need for retuning or matching [1]- [3]. As they passively perform a frequency selective switch operation they have the potential to be incorporated in frequency selective surfaces (FSS), not only to offer multi-band operation, but also as a method of bandwidth control or the removal of unwanted resonances from a surface.…”

Section: Introductionmentioning

confidence: 99%

Dual-band FSS design using LC traps

Taylor

Batchelor

Parker

2010

2010 Loughborough Antennas &Amp; Propagation Conference

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This paper introduces resonant "traps" and their potential uses to frequency selective surfaces (FSS). A trap can be considered a passive frequency selective switch offering a high or low impedance state depending upon operating frequency. The paper illustrates an established trap application and introduces the potential for use in FSS designs. A harmonically or near harmonically related dual-band annular ring application is discussed, with the design being realised both by simulation and measurement, the results of which are presented and evaluated.

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“…1). We use our model from part 1 [2] in the MoM code FEKO [3] to tune the array to different center frequencies corresponding to the 10-, 15-, and 20-m U.S. Army Military Affiliate Radio System (MARS) bands. We place the MARS and KT-34XA arrays at a height, (50 ft) and a height (70 ft), respectively for both single and stacked operation.…”

Section: Introductionmentioning

confidence: 99%

A Lumped-Circuit Model for a Triband Trapped Dipole Array-Part II: Stacked Arrays

Coburn

Fazi

2008

Antennas Wirel. Propag. Lett.

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Demands on emergency rf links have shown how important HF (3-30 MHz) communications can be for medium to long range. Efficient triband antennas have been developed and are quite popular for HF communications. In part 1, we described a lumped circuit model of the KLM 4-element KT-34A antenna. Here we consider its larger companion the 6-element KT-34XA and describe retuning the model for operation in the 10-, 15-and 20-m U.S. Army Military Affiliate Radio System (MARS) bands. We retune the parallel LC-circuits acting as "traps" and adjust the element lengths to obtain a "MARS"array. A numerical model of this type of antenna is of interest to study antenna placement and the use of stacked arrays. We compare the radiation pattern of the 6-element KLM and MARS arrays and show examples for a stacked configuration over an imperfect ground plane. The model results for the individual arrays have the expected front and rear main beam angles but when stacked these angles change in a nonintuitive manner.Index Terms-Dipole arrays, high-frequency (HF) radio communication, log periodic antennas, method of moments (MOM), Yagi-Uda arrays.

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A Lumped-Circuit Model for a Triband Trapped Dipole Array-Part 1: Model Description

Cited by 5 publications

References 1 publication

Utilizing everyday metallic structures as UHF RFID antennas

Utilizing everyday metallic structures as UHF RFID antennas

Dual-band FSS design using LC traps

A Lumped-Circuit Model for a Triband Trapped Dipole Array-Part II: Stacked Arrays

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