Aperture-coupled equilateral triangular microstrip array antennas for single and multiband operation

Pushpanjali, G M; Konda, R. B.; Mulgi, S. N.; Satnoor, S. K.; Hunagund, P. V.

doi:10.1109/amta.2008.4763038

Cited by 4 publications

(1 citation statement)

References 7 publications

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“…Moreover, multiband resonators have the capability of reducing the required intermodulation frequency term filters (IMTF) [ 10 ]. Resonators have been investigated in different ways to obtain multiband operation such as concentric arrangement of multiple squared split ring microstrip resonators and fed by an L-probe [ 11 ]; resonator design consists of two substrates with EMC feeding technique [ 12 ], integration of a right isosceles triangular radiator with a pair of monopoles, a semicircular radiator integrated with a slot and a monopole [ 13 ], combination of a rectangular ring microstrip and a folded meandered arm [ 14 ], and a two-element array of aperture-coupled equilateral triangular microstrip resonator [ 15 ]. Even so, these resonator configurations are not structurally simple and require combination of different radiator shapes that increases the chance of performance degradation.…”

Section: Introductionmentioning

confidence: 99%

Gain Enhancement of a Multiband Resonator Using Defected Ground Surface on Epoxy Woven Glass Material

Alam

Islam

Arshad

2014

The Scientific World Journal

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A multiband microstrip resonator is proposed in this study which is realized through a rectangular radiator with embedded symmetrical rectangular slots in it and a defected ground surface. The study is presented with detailed parametric analyses to understand the effect of various design parameters. The design and analyses are performed using the FIT based full-wave electromagnetic simulator CST microwave studio suite. With selected parameter values, the resonator showed a peak gain of 5.85 dBi at 5.2 GHz, 6.2 dBi at 8.3 GHz, 3.9 dBi at 9.5 GHz, 5.9 dBi at 12.2 GHz, and 4.7 dBi at 14.6 GHz. Meanwhile, the main lobe magnitude and the 3 dB angular beam width are 6.2 dBi and 86°, 5.9 dBi and 53.7°, 8.5 dBi and 43.9°, 8.6 dBi and 42.1°, and 4.7 dBi and 30.1°, respectively, at the resonant frequencies. The overall resonator has a compact dimension of 0.52λ × 0.52λ × 0.027λ at the lower resonant frequency. For practical validation, a lab prototype was built on a 1.6 mm thick epoxide woven glass fabric dielectric material which is measured using a vector network analyzer and within an anechoic chamber. The comparison between the simulated and measured results showed a very good understanding, which implies the practical suitability of the proposed multiband resonator design.

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