Improved coupling for aperture coupled microstrip antennas

Rathi, Vikas K; Kumar, Girish; Ray, K. P.

doi:10.1109/8.511831

Cited by 115 publications

(49 citation statements)

References 6 publications

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“…Therefore, this antenna is more suitable for garment integration than conventional antennas. Further improvement of the coupling between the antenna and the exposimeter module is obtained by employing an H-shaped coupling slot, thereby also minimizing the backward radiation into the human body [16]. The textile material is flexible and lightweight, without sacrificing antenna performance, in comparison to rigid antennas.…”

Section: A Antennamentioning

confidence: 99%

Compact Personal Distributed Wearable Exposimeter

et al. 2015

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Abstract-A compact wearable Personal DistributedExposimeter is proposed, sensing the power density of incident radio-frequency (RF) fields on the body of a human. In contrast to current commercial exposimeters, our Personal Distributed Exposimeter, being composed of multiple compact personal wearable RF exposimeter sensor modules, minimizes uncertainties caused by the proximity of the body, the specific antenna used and the exact position of the exposimeter. For unobtrusive deployment inside a jacket, each individual exposimeter sensor module is specifically implemented on the feedplane of a textile patch antenna. The new wearable sensor module's high-resolution logarithmic detector logs RF signal levels. Next, on-board flash memory records minimum, maximum and average exposure data over a time span of more than two weeks, at a one-second sample period. Sample-level synchronization of each individual exposimeter sensor module enables combining of measurements collected by different nodes. The system is first calibrated in an anechoic chamber, and then compared to a commercially available single-unit exposimeter. Next, the Personal Distributed Exposimeter is validated in realistic conditions, by measuring the average RF power density on a human during a walk in an urban environment and comparing the results to spectrum analyzer measurements with a calibrated antenna.

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Section: A Antennamentioning

confidence: 99%

Compact Personal Distributed Wearable Exposimeter

et al. 2015

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“…In our view, an important design parameter is the distance between the slot and the plate, which allows optimizing the matching of the high impedance resonant slot to the microstrip line. On the 0.7874 mm (31 mil) Taconic TLX-9 substrate, the bandwidth reached is no more than 9%, even with the use of the dog-bone slot [21].…”

Section: End-wall Transitions In the Literaturementioning

confidence: 99%

Novel Low-Cost End-Wall Microstrip-to-Waveguide Splitter Transition

Aliakbarian¹,

Enayati²,

Vandenbosch³

et al. 2010

PIER

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Abstract-A novel configuration for an end-wall microstrip-towaveguide splitter transition is presented suitable for use in series fed microstrip arrays. The low price, simplicity, manufacturability, low sensitivity, and also wideband operation, up to more than 37%, is the result of positive interaction between double slots and double stubs. The transition is applied to a dual band 1 × 2 array. A wideband non-tilted pattern is achieved.

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“…1(c). In contrast to the rectangular slot of the same length, the H-shaped slot gives more coupling, which can achieve wider Q e range [9]. To maximize coupling, the optimum length of the microstrip stub (l ms ) is about g =5 [10].…”

Section: Configuration and Designmentioning

confidence: 99%

A microstrip-fed <i>W</i>-band waveguide filter using H-shaped coupling slots

Tang

Sun

2017

IEICE Electron. Express

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A novel microstrip-fed waveguide filter is proposed in this letter. The H-shaped slots on the back side of the substrate are utilized to connect waveguide cavities and the microstrip circuit. Simultaneously, they are used to realize external coupling of the filter. This design can effectively reduce the size of the circuit and avoid extra transition loss, which is good for system integration. A fifth-order filter at W-band based on H-shaped coupling slots have been fabricated and measured. Good agreements between the simulated and measured results are observed.

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Improved coupling for aperture coupled microstrip antennas

Cited by 115 publications

References 6 publications

Compact Personal Distributed Wearable Exposimeter

Compact Personal Distributed Wearable Exposimeter

Novel Low-Cost End-Wall Microstrip-to-Waveguide Splitter Transition

A microstrip-fed <i>W</i>-band waveguide filter using H-shaped coupling slots

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