Mutual Coupling Between a Pair of Identical Beam Steering Dielectric Resonator Antennas

Fayad, H.; Record, Paul

doi:10.2528/pierb09021504

Cited by 8 publications

(9 citation statements)

References 13 publications

(21 reference statements)

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“…Such a LiNbO 3 photonic sensor is compact, with negligible perturbation, over a very broad frequency range. LiNbO 3 photonic sensor with coplanar waveguide antenna [3], segmented electrodes antenna [4], and micro-multi-annular antenna [5] have been designed and fabricated. In this article, we present a LiNbO 3 -based photonic sensor which is with M-Z optical waveguide interferometer configuration and tapered antenna array and uses optical fiber as a link between the probe and laser/photodetector components.…”

Section: Discussionmentioning

confidence: 99%

A novel reconfigurable quadratic antenna for wimax and 4G systems

Jamlos

Kamarudin

Jamlos

et al. 2011

Micro & Optical Tech Letters

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A reconfigurable beam shaping of quadratic-aperture coupled antenna array is introduced. The 16 rectangular patches microstrip antenna is fed by an aperture coupled structure, which incorporates PIN diode switches that are integrated with the feed line. The activation of certain PIN diode switches configuration enables the variety outcomes of the radiation patterns with different beamwidth and gain. It is found that the beam shaping ability is greatly influenced by the quadratic aperture slots, which have strengthened the level of coupling from the feed line to the radiating patches. Furthermore, the novel quadratic slots, which behave as an inductive equivalent circuit, has the ability to absorb the reflected electrical field between the substrates. The proposed antenna can be constructed to work at two different frequencies concurrently which are 2.3 and 2.5 GHz, at each shaped beam pattern. This novel antenna is competent of shaping its radiated beam up to four different gains; 2.81, 4.98, 7.78, and 11.34 dB with 81.76% efficiency. Hence, the proposed antenna has the greatest gain of 11.34 dB and also proficient to generate the widest beamwidth covering radiated forward beam of 90 compared with conventional microstrip antenna which could only cover from 50. These results extend the validity of the analysis and will be highly potential for application of WIMAX at 2.3 and 2.5 GHz's 4G in the future.

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Section: Discussionmentioning

confidence: 99%

A novel reconfigurable quadratic antenna for wimax and 4G systems

Jamlos

Kamarudin

Jamlos

et al. 2011

Micro & Optical Tech Letters

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“…Mutual coupling (MC) or isolation is a term that describes the electromagnetic wave (EMW) interaction between antennas placed in closed [2]. This interaction causes some consequences on the antennas' characteristic including distortion of radiation pattern of the array, input impedance, and gain, operating frequency, bandwidth and efficiency [9].…”

Section: Methodsmentioning

confidence: 99%

“…This interaction causes some consequences on the antennas' characteristic including distortion of radiation pattern of the array, input impedance, and gain, operating frequency, bandwidth and efficiency [9]. DRA elements which are arranged to form array will have interaction between elements due to electromagnetic wave.…”

Section: Mutual Couplingmentioning

confidence: 99%

Investigation on Mutual Coupling of Aperture Coupled Cylindrical Dielectric Resonator Antenna (DRA)

Perai¹

2018

JESR

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In this research, study on mutual coupling of aperture coupled cylindrical DRA and its influence on return loss, radiation pattern including the directivity, gain and bandwidth was computed and illustrated. The DRA was excited by a micro strip line with aperture coupled slots where the slot locations were calculated using the characteristic of standing wave ratio over a short ended micro strips. Small dielectric resonator antenna was designed using high permittivity dielectric material with permittivity the substrate of 3.38. The diameter of the dielectric resonator is 12mm with the height of 4.2mm. The element spacing that been investigated for the effect of mutual coupling was at 0.5λ, 0.75λ and 1λ with maximum of four DRA been used. The final result shows the effect of mutual coupling is decreased with three DRA element with the gain measured at 5.948GHz frequency is about 8.619dB with high directivity measured at 11.4dBi. This shows that the proposed DRA with three 1λ spacing DRA elements exhibits an enhancement of the gain and directivity in comparison with a single pellet DRA. Hence, by increasing the level of isolation between the two identical DRAs to 1λ it actually helps electromagnetic interaction to attract and further increase the directivity and effective area.

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“…e l s e v i e r . c o m / l o c a t e / j m a d structure (e.g., microstrip line) [14,15]. According to the literature, there is a simpler alternative way of producing a wideband DRA with reliable electromagnetic coupling by using DRA composites [8].…”

Section: Contents Lists Available At Sciencedirectmentioning

confidence: 99%