Gain-bandwidth product for aperture-coupled antennas

Bilgiç, Mustafa Murat; Yeğin, Korkut

doi:10.1109/cem.2013.6617118

Cited by 6 publications

(4 citation statements)

References 6 publications

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“…The TM 01 mode antenna exhibits almost equal performance, but the TM 02 mode antenna has a lower peak gain 6.9 dBi, narrower HPBW 70 ∘ and poor impedance matching for the single-layer substrate. The FOM [34] of the proposed Xband antenna and other performance parameters are compared with some existing antennas, presented in Table 4.…”

Section: X-band Antennamentioning

confidence: 99%

X‐band antenna printed on a multilayered substrate

Kumar

Basu

Talukdar

et al. 2017

IET Microwaves, Antennas & Propagation

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In this communication, a single element high‐gain antenna with wide half power beamwidth (HPBW)is reported. The antenna exhibits high gain (10.01 dBi) and excellent radiationefficiency (98.8%) with wide HPBW in both vertical (110∘) and horizontal (118∘) planes. The overall volume of the antennais 2λ0×1.5λ0×0.053λ0 and electrical height (k0h) is 0.38 at at centre frequency 11 GHz. Thedielectric constant of the multilayered substrate is extracted using resonantcavity model of a rectangular microstrip antenna. The proposed antenna operatesat higher order, TnormalM02 mode excited by the loaded parasitic on theupper layer of the substrate and behaves similarly to a two‐dimensional‐leakywave antenna. The loaded parasitics are transforming the capacitive behaviour ofthe antenna input impedance into the inductive. The antenna offerswide‐impedance bandwidth of 1.01 GHz and 610 MHz considering the inputreflection parameter below −10 dB and −20 dB, respectively. It exhibits a verygood antenna figure of merit of 1.03 in terms of gain, bandwidth, HPBW andelectrical height. The prototypes of the antennas are fabricated and executionis accepted using measured results.

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Section: X-band Antennamentioning

confidence: 99%

X‐band antenna printed on a multilayered substrate

Kumar

Basu

Talukdar

et al. 2017

IET Microwaves, Antennas & Propagation

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“…These aperture shapes include rectangular, hour-glass, H-shaped and proposed coupling aperture. Bandwidth and gain play significant role in defining the antenna performance and are key design characteristics that define the performance of a coupling aperture in case of aperture coupled antenna [16].…”

Section: Gain Bandwidth Product Of Acmpa and Cramentioning

confidence: 99%

“…However, these parameters are complimentary matrices, in that if one is improved, other is degraded. The study of gain bandwidth product (GBWP) with different slot shapes has been carried out in [16] and [17]. To obtain the desired performance out of the ACMPA, there are a number of structural geometries that need to be optimized.…”

Section: Introductionmentioning

confidence: 99%

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High Gain FSS Aperture Coupled Microstrip Patch Antenna

Niaz¹,

Umair²,

Islam³

et al. 2016

PIER C

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Abstract-This paper presents a high-gain cavity resonant antenna (CRA), consisting of an FSS layer placed above an aperture coupled microstrip patch antenna (ACMPA). Geometry of the proposed FSS superstrate is highly reflective with |Γ > 0.9|. Ray-tracing method has been employed for determining the resonant condition of the antenna. ACMPA operating at S-band is serving as a feeding source. The coupling aperture of the antenna is of novel design, and several figures of merit have been presented for the proposed coupling aperture. Analysis of CRA has been carried out with the design parameters of the CRA. HFSS-13 has been utilized as simulation tool. Measured results are in good agreement with the simulated ones.

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Efficiency‐based approach to quantifying ‘tuneability’ performance in frequency‐agile narrowband antennas

James

Hilton

Beach

2019

IET Microwaves, Antennas & Propagation

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Many communications systems require reconfigurable band access in compact form factors. Contemporary literature routinely reports ‘tuneability’ (or frequency agility) in input response terms (S11), yet repeatable efficiency data were reported in <40% of cases surveyed. Despite the low efficiencies associated with many tuneable narrowband antennas, e.g. electrically small antennas (ESAs), reference methods to quantify tuneability in terms of a tuned range of realised antenna efficiency, average efficiency in the band and integrated efficiency–bandwidth product do not exist and thus have not been widely adopted. Here, these metrics have been formulated for general application to efficiency‐based tuneability assessment of narrowband antennas. Application to a set of fixed‐frequency/varactor‐tuned ESAs (ka = 0.19–0.31) in the ultra‐high frequency band is demonstrated. Tuning range of 10% or 25% realised efficiency was found to be several times narrower than S11 < −6 dB tuning range for antennas in this study and in the literature, highlighting the need for a shift to efficiency‐based tuneability reporting in support of RF system design analysis. The integrated efficiency–bandwidth product has been demonstrated for combined efficiency and reconfigurability comparison of tuneable antennas, providing a platform for future performance grading of a diverse range of antenna tuning technologies.

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Gain-bandwidth product for aperture-coupled antennas

Cited by 6 publications

References 6 publications

X‐band antenna printed on a multilayered substrate

X‐band antenna printed on a multilayered substrate

High Gain FSS Aperture Coupled Microstrip Patch Antenna

Efficiency‐based approach to quantifying ‘tuneability’ performance in frequency‐agile narrowband antennas

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