Wideband Ring Dielectric Resonator Antenna With Annular-Shaped Microstrip Feed

Chaudhary, Raghvendra Kumar; Kumar, Rajnish; Srivastava, Kumar Vaibhav

doi:10.1109/lawp.2013.2260317

Cited by 66 publications

(32 citation statements)

References 9 publications

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“…From Figure 3, it can be observed that as the feed position is shifted from the center position, the return loss bandwidth of CDRA is increased and due to which proposed structure shows wideband characteristics (3.12-9.0 GHz). [11,12] When two ring-shaped resonator is integrated with the Journal of Electromagnetic Waves and Applications 5 Figure 3, it can also be observed that the last frequency band (7.56-8.16 GHz) is generated due CDRA. Figure 4 shows the return loss vs. frequency curves of the proposed structure with and without circular slots.…”

Section: Parametric Analysismentioning

confidence: 99%

Compact triband cylindrical dielectric resonator antenna with circular slots for wireless application

Sharma

Gangwar

2015

Journal of Electromagnetic Waves and Applications

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In this article, low-profile and compact cylindrical dielectric resonator antenna along with circular slots and filtering structure for wireless application is reported. Proposed antenna is excited by annular-shaped microstrip line. Two ring-shaped resonators placed on opposite sides of feed line are working as a band-pass filter. These resonators are unified with wideband cylindrical dielectric resonator antenna and make it suitable for triple band operations with better isolation level. Dual ringshaped parasitic slots on a partial ground plane are used to make CDRA more compact. The proposed triple band antenna has been analyzed, studied and optimized using Ansoft HFSS simulation software. Prototype of proposed geometry has been fabricated and tested. There is a better accord between simulated and measured results. The proposed design engenders three frequency bands i.e. 2. GHz with a resonant frequency of 2.45, 3.55, and 5.35 GHz, respectively. Proposed antenna design may find suitable applications for WLAN (2.4/5.2 GHz) and WiMAX (3.5 GHz) bands. The proposed design shows an average measured gain of 4.71 dB in the three desired bands.

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Section: Parametric Analysismentioning

confidence: 99%

Compact triband cylindrical dielectric resonator antenna with circular slots for wireless application

Sharma

Gangwar

2015

Journal of Electromagnetic Waves and Applications

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“…Besides this, DRA offers ease of excitations, design flexibility, compact size, and low cost . Linearly polarized (LP) antennas are popular and used for wireless communication systems but in current scenarios, the use of LP antennas are less used in satellite communication systems because of its far‐field characteristics, that is, it is radiate in either horizontal or vertical directions . In recent years, antenna engineers are more devoted to design circularly polarized (CP) antennas because of its number of advantages.…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3] Linearly polarized (LP) antennas are popular and used for wireless communication systems but in current scenarios, the use of LP antennas are less used in satellite communication systems because of its far-field characteristics, that is, it is radiate in either horizontal or vertical directions. [4][5][6] In recent years, antenna engineers are more devoted to design circularly polarized (CP) antennas because of its number of advantages. These CP antennas offer removal of polarization mismatch between the transmitting and receiving signals and reflection occurs due to the earth.…”

Section: Introductionmentioning

confidence: 99%

Circularly polarized rectangular DRA coupled through orthogonal slot excited with microstrip circular ring feeding structure for Wi-MAX applications

Kumar

Chaudhary

2017

Int J RF Microw Comput Aided Eng

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In this article, a wideband circularly polarized rectangular dielectric resonator antenna (RDRA) coupled through orthogonal slots and excited with a new microstrip circular ring has been investigated. Circular polarization has been achieved by using plus shaped (1) slot on the ground plane and excited through a new microstrip circular ring feed. TE 11d mode has been excited in the RDRA which has been confirmed through the distribution of E-field and dielectric waveguide model (DWM) method of RDRA. Circularly polarized (CP) RDRA offering measured 210 dB input impedance bandwidth of 20.79% (centered at 3.27 GHz) and 3 dB axial ratio bandwidth in broadside direction of 12.09% (centered at 3.39 GHz), respectively. From the CP radiation pattern, proposed design confirms that right-handed CP (RHCP) in broadside direction. The difference between RHCP field and left-handed CP (LHCP) field are above 226 dB in operational band. In addition, the proposed CP antenna offers stable gain and radiation efficiency in working bands and it is suitable for IEEE 802.16e/d Wi-MAX (3.3-3.7 GHz) band. K E Y W O R D Scircular polarization, dielectric resonator antenna, slot excitation

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“… experimentally proved that the dielectric resonator can be used as an antenna element, after that extensive research has been going on DRA . Initially DRA is used to design only linearly polarized (LP) antenna . Later on more concentration has been devoted on circular polarization (CP) DRA due to low polarization loss and less affected by weather conditions .…”

Section: Introductionmentioning

confidence: 99%

A wideband circularly polarized dielectric resonator antenna excited with conformal‐strip and inverted L‐shaped microstrip‐feed‐line for WLAN/WI‐MAX applications

Kumar

Chaudhary

2016

Micro & Optical Tech Letters

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A new wideband circularly polarized dielectric resonator antenna (DRA) has been developed and presented in this article. The proposed antenna consisting rectangular and cubical‐shaped dielectric resonator (DR) with optimum gap excited by using combination of conformal‐strip and inverted L‐shaped microstrip‐feed‐line. The combinations of two different feeds (i.e., conformal‐strip and microstrip‐fed‐line) excite orthogonal modes in two DRs to generate circular polarization. The gap between these DRs and conformal strip offers wideband of impedance and axial ratio bandwidth. Designed antenna offers measured −10 dB impedance bandwidth of 27.36% (at center frequency 5.78 GHz) and measured 3‐dB axial ratio bandwidth has been achieved in broadside direction of 23.00% (at center frequency 5.65 GHz). It has been confirmed from the radiation pattern that the antenna having right hand circular polarization (RHCP). Proposed antenna can be used for wireless communication systems such as WLAN/Wi‐MAX applications. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2525–2531, 2016

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Wideband Ring Dielectric Resonator Antenna With Annular-Shaped Microstrip Feed

Cited by 66 publications

References 9 publications

Compact triband cylindrical dielectric resonator antenna with circular slots for wireless application

Compact triband cylindrical dielectric resonator antenna with circular slots for wireless application

Circularly polarized rectangular DRA coupled through orthogonal slot excited with microstrip circular ring feeding structure for Wi-MAX applications

A wideband circularly polarized dielectric resonator antenna excited with conformal‐strip and inverted L‐shaped microstrip‐feed‐line for WLAN/WI‐MAX applications

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