Three hexagonal patch antennas are designed for circular polarization and experimentally validated. These antennas are labeled; simple hexagonal patch, hexagonal patch with slotted ground and hexagonal patch with parasitic element. The measured impedance bandwidths of the three antennas are 2% for the simple patch, 5.2% for the patch with slotted ground and 6.35% for the antenna with parasitic element. The axial ratio (measured) obtained is 4.73% for the patch with slotted ground and 3.33% for the hexagonal patch antenna with parasitic element. The measured radiation patterns of these antennas are found to be in good agreement with the simulated radiation patterns. The average gain of all the three antennas is also evaluated. A frequency selective surface (FSS) is proposed with dimensions smaller than that of a conventional FSS structure. The measured gain improvement with the proposed FSS is around 3dB in the operating band.

/pdf/design-of-slotted-ground-hexagonal-microstrip-patch-antenna-4p4m29mhvn.pdf

Design of Slotted Ground Hexagonal Microstrip Patch Antenna and Gain Improvement with FSS Screen

Presently a days the remote correspondence framework advancement requires the ease, low profile, insignificant weight radio wire improvement which is cultivated of proceeding with incredible introduction finished a wide recurrence range. The MSPA architecture has facilitated this forward thinking skills trend. Within this paper work a 4.85 GHz circular polarization operating frequency is planned and simulated for RMSPA. The proposed antenna is capable of designing and inducing Left Hand Loop Polarization (LHCP) and Right Hand Loop Polarization (RHCP) using a cross-coupler that is directly attached to the micro-strip antenna to polarize the circular. The proposed paper work working recurrence is 4.85 GHz which is essentially utilized for satellite interchanges, full-time satellite TV organizations. This working recurrence is the IEEE 802.11a variation C band recurrence and this C band recurrence is utilized in Wi-Fi gadgets and Radio LAN. The proposed FR-4 roundabout polarization rectangular miniature strip fix radio wire is 1.6 mm thick. The proposed rectangular micro strip fix radio wire is planned and mimicked utilizing CSTMWS (Computer Simulation Technology Micro Wave Studio) programming. The full or working recurrence of proposed radio wire presents at 4.85 GHz for remote correspondences that gives S boundaries, data transmission and radiation example of Gain and directivity.

https://irojournals.com/irosws/V2/I3/01.pdf

Dual Edge-Fed Left Hand and Right Hand Circularly Polarized Rectangular Micro-Strip Patch Antenna for Wireless Communication Applications

Nowadays the wireless communication system development requires the low cost, low profile; minimal weight antenna development which is accomplished of continuing great presentation completed a wide frequency range. This upcoming technology fashion has motivated the MSPA (Microstrip Patch Antenna) design. This paperwork presents design and analysis of 2 patches (2 by 1) and 4 patches (4 by 1) Rectangular Microstrip Patch Array (RMSPA) Antennas with corporate feed network systems for S band applications at 2.45 GHz. This S band frequency range is mostly used for mobile satellite communication systems an also used in Bluetooth, Zigbee, Wi-Fi communication technologies. In the proposed work, 4.5 dielectric constant and 1.65 mm thickness of the substrate is used. The primary of this research work is to present an RMSPA antenna design and analysis using CSTMWS software “Computer Simulation Technology Micro Wave Studio” and investigate the performance of 2 elements patch arrays with that of a 4 elements patch arrays for the same 2.45 GHz operating frequency. It also made the study and investigation between the 2 elements and 4 elements corporate feed systems in terms of reflection coefficient (return loss), VSWR, bandwidth, directivity, gain, and radiation pattern. The main intension of this paperwork is to achieve an extraordinary directivity with enhanced gain and reduced losses at S band frequency range.

Rectangular Micro Strip Patch Array Antenna With Corporate Feed Network For Wireless Communication Applications

A novel circular polarization (CP) design of a single-feed Hexagonal shaped microstrip antenna for enhanced antenna parameters is presented. The CP design is obtained by placing three isosceles triangular defects at proper locations in the hexagonal radiating patch as well as in the square ground plane. By adjusting one of the side lengths of the triangular defect, slightly longer or shorter than that of the others, two orthogonal near degenerate resonant modes for CP radiation are excited. Moreover, the 3 dB axial ratio bandwidth is surrounded by the 10 dB impedance bandwidth, to ensure that the antenna radiates CP waves in its impedance band. The antenna gain of the proposed antenna has increased by 5.34 dB (7.93 vs. 2.59 dB), as compared to the hexagonal microstrip antenna with triangular truncations in patch but without triangular defects in the ground plane having same substrate material, height and same radiating patch size and shape. Prototype antenna is fabricated for experimental evaluation. Simulated and measured results are in good agreement with each other.

Circular Polarization in Defected Hexagonal Shaped Microstrip Antenna

This communication describes the design and analysis of a dielectric layer loaded circularly polarized (CP) hexagonal patch antenna in the frequency range 2.4000-2.4835 GHz. The obtained results indicate that there are significant changes in the performances of the antenna. In particular the axial ratio at resonant frequency 2.43 GHz is around 1.245 dB followed by the axial ratio bandwidth around 1.41 % hence the proposed antenna confirms the circularly polarized behaviour. Therefore the change in various response parameters due to such loading is compensated by introducing an air gap between the ground plane and the substrate of patch antenna. The thickness of the air gap is chosen such that the shifted responses are brought in the desired range. Due to air gap, the resonant frequency of dielectric loaded antenna shifted from 2.39 GHz to 2.44 GHz which is within the operating range of antenna and other performance characteristics of the antenna like input impedance, VSWR, return loss etc. also get improved, and the impedance bandwidth improved up to around 1.51 %.

Compensation of dielectric cover effects on cp hexagonal microstrip antenna

Hexagonal microstrip antenna with perturbed edges and a single coaxial feed has been proposed for circular polarization. The configuration has been realized by inserting perturbations along two opposite sides of the hexagonal microstrip antenna. Both left-hand and right-hand circular polarization is obtained, simply by displacing the feed location by 90 degree. The measured bandwidth corresponding to VSWR ≤ 2 of 26.2 MHz and the 3 dB axial ratio bandwidth of 6.01 MHz has been achieved for the antenna which is designed at 915 MHz. Theoretical results have been validated with experiments.

Perturbed hexagonal microstrip antenna for circular polarization

Suspended hexagonal microstrip antenna with a single coaxial feed has been proposed for circular polarization. The configuration has been realized by inserting perturbations along two opposite sides of the suspended hexagonal microstrip antenna. The broad bandwidth of 70 MHz has been obtained corresponding to VSWR < 2 and 3 dB axial ratio bandwidth of 16.2 MHz has been achieved for the suspended antenna which is designed at 915 MHz. Theoretical results have been validated with experiments.

/pdf/suspended-hexagonal-microstrip-antennas-for-circular-40w9zmrr90.pdf

Suspended Hexagonal Microstrip Antennas for Circular Polarization

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Perturbed hexagonal microstrip antenna for circular polarization

Suspended Hexagonal Microstrip Antennas for Circular Polarization