scholarly journals Compact Circularly Polarized Patch Antenna for WiMAX Applications with Improved Impedance Bandwidth and Axial Ratio

2020 ◽  
Vol 10 (1) ◽  
pp. 5104-5107
Author(s):  
R. Swetha ◽  
L. Anjaneyulu
Keyword(s):  
Resonant Frequency ◽  
Patch Antenna ◽  
Axial Ratio ◽  
Microstrip Patch Antenna ◽  
Impedance Bandwidth ◽  
Frequency Range ◽  
Circularly Polarized ◽  
Microstrip Patch

This paper presents a circularly polarized microstrip patch antenna for WiMAX (Worldwide Interoperability for Microwave Access) application with improved impedance bandwidth and axial ratio compared to the existing designs. The antenna is designed at a resonant frequency of 3.56GHz on the FR4 substrate with 2mm thickness. The dimensions of the antenna are 0.35λo×0.35 λo×0.023λo and it is fed through a probe feed. An impedance bandwidth of 360MHz (10.11%) in the frequency range of 3.44GHz−3.8GHz, with a gain of 3.16dBi, axial ratio bandwidth of 1.9% (3.56GHz−3.63GHz) and VSWR<2 are obtained.

Circularly Polarized Rectangular Microstrip Patch Antenna with Finite Ground Plane

2015 ◽  
Vol 4 (2) ◽  
pp. 74
Author(s):  
Sanyog Rawat ◽  
Kamlesh Kumar Sharma
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Ground Plane ◽  
Axial Ratio ◽  
Microstrip Patch Antenna ◽  
Simulation Software ◽  
Impedance Bandwidth ◽  
Circularly Polarized ◽  
Microstrip Patch ◽  
Rectangular Patch

<p class="Abstract"><span style="font-weight: normal;">In this paper a new geometry of patch antenna is proposed with improved bandwidth and circular polarization. The radiation performance of circularly polarized rectangular patch antenna is investigated by applying IE3D simulation software and its performance is compared with that of conventional rectangular patch antenna.</span> <span style="font-weight: normal;">Finite Ground truncation technique is used to obtain the desired results. The simulated return loss, axial ratio and smith chart with frequency for the proposed antenna is reported in this paper. It is shown that by selecting suitable ground-plane dimensions, air gap and location of the slits, the impedance bandwidth can be enhanced upto 10.15 % as compared to conventional rectangular patch (4.24%) with an axial ratio bandwidth of 4.05%.</span></p><p> </p><p> </p>

scholarly journals Miniaturized Circularly Polarized Implantable Antenna for ISM-Band Biomedical Devices

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Ke Zhang ◽  
Changrong Liu ◽  
Xueguan Liu ◽  
Huiping Guo ◽  
Xinmi Yang
Keyword(s):  
Patch Antenna ◽  
Axial Ratio ◽  
Microstrip Patch Antenna ◽  
Impedance Bandwidth ◽  
Optimized Design ◽  
Circularly Polarized ◽  
Ism Band ◽  
Microstrip Patch ◽  
Compact Size ◽  
Implantable Antenna

A compact circularly polarized antenna operating at 915 MHz industrial, scientific, and medical (ISM) band for biomedical implantable applications is presented and experimentally measured. The proposed antenna can be miniaturized to a large extent with the compact size of 15 × 15 × 1.27 mm3 by means of loading patches to a ring-shaped microstrip patch antenna. An impedance bandwidth of 10.6% (865–962 MHz) for reflection coefficient less than −10 dB can be obtained. Meanwhile, the simulated 3 dB axial-ratio (AR) bandwidth reaches 14 MHz. Finally, the optimized design was fabricated and tested, and the measured results agree well with simulated results.

scholarly journals Circularly Polarized Slotted Microstrip Patch Antenna with Finite Ground Plane

2012 ◽  
Vol 1 (2) ◽  
pp. 97-106
Author(s):  
Sanyog Rawat ◽  
K K Sharma
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Ground Plane ◽  
Axial Ratio ◽  
Microstrip Patch Antenna ◽  
Simulation Software ◽  
Impedance Bandwidth ◽  
Circularly Polarized ◽  
Microstrip Patch ◽  
Rectangular Patch

In this paper a new geometry of circularly polarized patch antenna is proposed with improved bandwidth. The radiation performance of proposed patch antenna is investigated using IE3D simulation software and its performance is compared with that of conventional rectangular patch antenna. The simulated return loss, axial ratio and impedance with frequency for the proposed antenna are reported in this paper. It is shown that by selecting suitable ground-plane dimensions, air gap and location of the slots, the impedance bandwidth can be enhanced upto 10.15% as compared to conventional rectangular patch (4.24%) with an axial ratio bandwidth of 4.05%.DOI: 10.18495/comengapp.12.097106

Microstrip Patch Antenna with Circular Polarization Loaded with Drumsticks Slots

2019 ◽  
Vol 9 (2) ◽  
pp. 260-268
Author(s):  
R.K. Yadav ◽  
Mritunjay Rai ◽  
Manoj Kumar Vishwakarma
Keyword(s):  
Patch Antenna ◽  
Relative Permittivity ◽  
Return Loss ◽  
Axial Ratio ◽  
Microstrip Patch Antenna ◽  
Planar Antenna ◽  
Frequency Range ◽  
Circularly Polarized ◽  
Microstrip Patch ◽  
Coaxial Feed

Background & Objective: In this paper circularly polarized microstrip planar antenna is proposed in the 5-6 GHz frequency range. With the introduction of Drum sticks slot and a coaxial feed the antenna exhibits excellent Return loss and Axial Ratio characteristics during simulation. Further, a wider AR bandwidth is achieved in the antenna 3 with the introduction of central circular slots. The circularly polarized antenna is fabricated using Arlon AD 250 substrate and this paper presents its design and simulation using optimization engine HFSS. Conclusion: The substrate has a relative permittivity of 2.55 and thickness is 0.76mm.Various characteristics like return loss, impedance, gain, BW and directivity are presented.

scholarly journals Compact and High Gain 4 × 4 Circularly Polarized Microstrip Patch Antenna Array for Next Generation Small Satellite

2021 ◽  
Vol 11 (19) ◽  
pp. 8869
Author(s):  
Manzoor Elahi ◽  
Son Trinh-Van ◽  
Youngoo Yang ◽  
Kang-Yoon Lee ◽  
Keum-Cheol Hwang
Keyword(s):  
Antenna Array ◽  
Patch Antenna ◽  
Axial Ratio ◽  
High Gain ◽  
Microstrip Patch Antenna ◽  
Small Satellite ◽  
Next Generation ◽  
Circularly Polarized ◽  
Microstrip Patch ◽  
Left Handed

In this article, a high gain and compact 4 × 4 circularly polarized microstrip patch antenna array is reported for the data transmission of the next-generation small satellite. The radiating element of the circularly polarized antenna array is realized by the conventional model of the patch with truncated corners. A compact two-stage sequential rotational phase feeding is adopted that broadens the operating bandwidth of the 4 × 4 array. A small stub is embedded in the sequential rotational feed, which results in better performance in terms of the S-parameters and sequential phases at the output ports than sequential rotational feed without open stub. A prototype of the array is fabricated and measured. Fulfilling the application requirements of the next-generation small satellites, the array has the left-handed circularly polarized gain of more than 12 dBic with the axial ratio level below 1.5 dB in the ±10∘ angular space with respect to the broadside direction for the whole bandwidth from 8.05 GHz to 8.25 GHz. Moreover, the left-handed circularly polarized gain varies from 15 to 15.5 dBic in the desired band. The radiation patterns are measured; both the co- and X-pol are validated.

scholarly journals Compact Circularly Polarized Slotted Symmetric V slits Microstrip Patch Antenna for ISM Band Applications

2020 ◽  
Vol 8 (6) ◽  
Author(s):  
Naw Khu Say Wah ◽  
Hla Myo Tun
Keyword(s):  
Patch Antenna ◽  
Microstrip Antenna ◽  
Axial Ratio ◽  
Substrate Material ◽  
Microstrip Patch Antenna ◽  
Polarization Pattern ◽  
Circularly Polarized ◽  
Ism Band ◽  
Antenna Theory ◽  
Microstrip Patch

This paper presents a short microstrip patch antenna and analyzes its characteristics in simulation and measured ways. The proposed antenna is meant to be used from 2.4 to 2.5 GHz at the resonant frequency of 2.45 GHz Industrial, Science, and Medical (ISM) spectrum. Besides, insert a diagonal slot in the main patch, and two cutting edges with V-slit gives the antenna to propagate a circular polarization pattern. The paper aims to start learning a simple C.P. patch antenna supported the basic concept of microstrip antenna theory. A single-feed C.P., truncated corners, and slit and slot methods are employed to model the antenna apart from its parametric study. The substrate material of the developed antenna is FR-4, and it's a relative permittivity of 4.4. The antenna incorporates a compact overall size of 0.389λ0 × 0.389λ0 × 0.013λ0, where λ0 is that the corresponding free-space wavelength at 2.45 GHz. FEKO has been used for not only designing the antenna model but also analyzing its performances. Simulated and measured results have reported that the antenna can work in ISM bands (2.42-2.5 GHz) with VSWR< 2, low realized gain, and the limited 3-dB axial ratio at 2.45 GHz.

scholarly journals A Slotted Single Feed Circularly Polarized Microstrip Patch Antenna with Suppressed Surface Wave Losses for WLAN Applications

2019 ◽  
Vol 9 (1S) ◽  
pp. 246-248
Keyword(s):  
Patch Antenna ◽  
Microstrip Antenna ◽  
Axial Ratio ◽  
Microstrip Patch Antenna ◽  
Antenna Structure ◽  
Circularly Polarized ◽  
Microstrip Patch ◽  
Circular Patch Antenna ◽  
Circularly Polarized Radiation ◽  
Polarized Radiation

The circularly polarized microstrip antenna has been of great importance in WLAN applications. A circularly polarized slotted circular patch antenna with co-axial feed geometry has been designed to meet the requirements. The antenna designed has been slotted at several locations to make it radiate circularly polarized radiation. Two metallic cylindrical vias have been inserted near the two diametric ends of the slot to improve the realized gain of the antenna. The antenna structure is resonating at 6.4 GHz with 3dB axial ratio bandwidth of 200MHz and gain of 9.8dB has been observed.

scholarly journals Compact Circular Polarization Design for Equilateral Triangular Micro Strip Antenna

2019 ◽  
Vol 8 (5S3) ◽  
pp. 18-20
Keyword(s):  
Surface Waves ◽  
Circular Polarization ◽  
Patch Antenna ◽  
Axial Ratio ◽  
Satellite Communications ◽  
Microstrip Patch Antenna ◽  
Circularly Polarized ◽  
Gain Enhancement ◽  
Microstrip Patch

This article focuses on designing a single-feed circularly polarized equilateral triangular microstrip patch antenna. The axial ratio bandwidth of the antenna is around 190 MHz. The antenna has been etched at specific locations for achieving circular polarization. The suppression of surface waves is also being focused upon for gain enhancement. The array of cylindrical metallic pins is embedded near the radiating side of the patch antenna. The gain enhancement of around 3.23 dB is observed. The antenna is designed for use in satellite communications.

Theoretical Analysis of Gap Coupled Microstrip Patch Antenna

2017 ◽  
Vol 7 (2) ◽  
pp. 567
Author(s):  
Akanksha Gupta ◽  
D K Srivastava ◽  
J.P. Saini
Keyword(s):  
Theoretical Analysis ◽  
Resonant Frequency ◽  
Patch Antenna ◽  
Ground Plane ◽  
Microstrip Patch Antenna ◽  
Impedance Bandwidth ◽  
Concept Model ◽  
Microstrip Patch ◽  
Parasitic Patch ◽  
Good Agreement

<p class="Author">When a patch is placed close to the fed patch, get excited due to parasitic coupling between the two elements. This proposed work presents theoretical analysis of rectangular gap coupled microstrip patch antenna (R-GCMSA) using circuit concept model, and the effect of gap(g), feed width (W<sub>f</sub>), and feed length on performance of the impedance bandwidth is also studied, it is observe as the gap between the parasitic element is increased resonant frequency shifted towards the parasitic patch resonant frequency for broadening the impedance bandwidth. The maximum impedance bandwidth for the proposed antenna design is 12.7% in the frequency range of 3.24-3.7GHz measured, with rectangular shape ground plane size 6030m.m<sup>2</sup>.the highest directivity achieved is 4dBi.The proposed design is simple in structure and compact in size, proposed design is simulated on IE3D Microwave simulator, the simulated result is in good agreement with obtained theoretical and measured results.</p>

Stacked Tri-Band Circularly Polarized Microstrip Patch Antenna for CNSS Applications

2013 ◽  
Vol 347-350 ◽  
pp. 1786-1789
Author(s):  
Kang Ding ◽  
Tong Bin Yu ◽  
Dong Fang Guan ◽  
Cheng Peng
Keyword(s):  
Patch Antenna ◽  
Microstrip Antenna ◽  
Axial Ratio ◽  
Satellite System ◽  
Microstrip Patch Antenna ◽  
Antenna Design ◽  
Circularly Polarized ◽  
Microstrip Patch ◽  
L Band ◽  
Compass Navigation

This paper proposes a novel stacked tri-band circularly polarized antenna which has three independent ports. To obtain tri-band operation, a stacked three layers of microstrip antenna working at different frequency is presented. Each of them is fed by dual feed probes. The simulated results show that the antenna can cover Compass Navigation Satellite System CNSS B3 1.268 GHz, L band 1.615 GHz and S band 2.49 GHz. The proposed antenna has achieved a bandwidth of 3.1%, 6.8% and 2.3% at each band, respectively. It exhibits small axial ratio under 3dB in three bands for the CNSS applications. Details of the proposed antenna design and results for the obtained tri-band circularly polarized performances are presented and discussed.

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