Circularly Polarized Antennas Using Characteristic Mode Analysis: A Review

Kollipara, Vamshi; Peddakrishna, Samineni

doi:10.46604/aiti.2022.8739

Cited by 6 publications

(4 citation statements)

References 64 publications

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“…The eigenvalue stands out as a crucial parameter, as its magnitude holds key information regarding characteristic mode radiation and resonant frequency. Specifically, a higher magnitude of the eigenvalue, denoted as |λ n = 0|, signifies that the mode exhibits more efficient radiation [28][29][30][31]. Characteristic Angle (CA) is a crucial element in this analysis.…”

Section: Characteristic Mode Analysismentioning

confidence: 99%

Characteristic Mode Analysis for Microstrip Fed Conformal Metasurface Multiband Antenna

Durga Bhavani,

Madhav,

Usha Devi

et al. 2024

PIER C

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In this study, an optimal multi-band microstrip fed metasurface antenna is designed. Three by three nonuniform circular radiating cross slotted elements make up the antenna's metasurface. The metasurface is analyzed using characteristic mode analysis (CMA), and the Modal Significance (MS), Characteristic angle (CA), and Eigen Value (EV) curves are utilized to optimize the antenna's performance. In addition, surface currents are examined for the metasurface and patch using CMA, and the design incorporates microstrip feeding to excite the targeted frequency bands. With its resonance frequencies of 5.4 GHz, 8.9 GHz, 12.8 GHz, 15.9 GHz, and 19.8-31.58 GHz, the developed antenna has potential uses in 5G and wireless communications. The suggested antenna achieves a gain of 10.05 on average. The prototyped model conformability analysis of the antenna is also performed, and good matching with simulation results is found.

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Section: Characteristic Mode Analysismentioning

confidence: 99%

Characteristic Mode Analysis for Microstrip Fed Conformal Metasurface Multiband Antenna

Durga Bhavani,

Madhav,

Usha Devi

et al. 2024

PIER C

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“…It helps identify the phase lag between different modes of operation. MS and CA parameters can quickly identify resonance and phase behavior between the modes; hence, these parameters are instrumental in identifying a structure's circular polarization behavior [18].…”

Section: Parametersmentioning

confidence: 99%

“…As a result, undesired modes will be suppressed, allowing the excitation of desired modes to gain physical insights [17]. Kollipara and Peddakrishna [18] analyzed the characteristic modes of antenna design to achieve circular polarization. Several research groups have evaluated CMA-based methodologies with and without metasurfaces.…”

Section: Introductionmentioning

confidence: 99%

Compact Circularly Polarized Monopole Antenna Using Characteristic Mode Analysis

Peddakrishna

Wang

Kollipara

et al. 2023

Proc. eng. technol. innov.

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This study aims to design a circularly polarized compact antenna using characteristic mode analysis (CMA). The proposed antenna consists of a substrate with a slotted annular ring-shaped patch and partial ground. The excitation position of the antenna and its optimal dimensions are determined through the analysis of different operation modes with CMA. After that, an optimized antenna is designed, and an antenna prototype is fabricated for validation. The experimental results show that the reflection coefficient achieves a -10dB impedance bandwidth of 6.85 GHz, a 3dB-axial ratio bandwidth of 0.7 GHz, and a peak gain of 3.2 dBi. These characteristics agree with simulations and make the circularly polarized compact antenna suit for C-band and sub-6 GHz 5G wireless applications.

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“…Based on MS and CA, a simple coplanar waveguide slot antenna design is proposed for examining CP radiation. More precisely, the MS and CA help to generate CP radiation [ 38 , 39 ]. These parameters make it possible to optimize the IPBW and ARBW.…”

Section: Introductionmentioning

confidence: 99%

Quad-Port Circularly Polarized MIMO Antenna with Wide Axial Ratio

Kollipara

Peddakrishna

2022

Sensors

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This article studies a quad-port multi-input-multi-output (MIMO) circularly polarized antenna with good isolation properties. Using characteristic mode analysis (CMA), the first six distinct modes of the asymmetric square slot with an inverted L-strip are analyzed. In this study, modal parameter extraction is carried out for circular polarization (CP) radiation. A simple annular ring microstrip feed is excited to obtain broadband CP based on CMA. The single-unit feeding structure is replicated orthogonally four times to achieve a CP MIMO antenna. This antenna provides port isolation of more than 21 dB without the use of an additional decoupling element. The quad-port CP-MIMO antenna is simulated with a total dimension of 50 × 50 mm2. The antenna attains impedance matching (S11 < −10 dB) from 5.37 GHz to beyond 11 GHz with an axial ratio bandwidth (ARBW) of 4.65 GHz (5.61 GHz to 10.26 GHz). The peak realized gain of the MIMO antenna is measured at 5.69 dBi at 8.4 GHz. Additionally, the diversity performance parameters of the MIMO structure are computed. The advantages of the proposed structure have been evaluated by comparing it to previously reported MIMO structures. A prototype of the MIMO structure measurements was found to match the simulation results.

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Circularly Polarized Antennas Using Characteristic Mode Analysis: A Review

Cited by 6 publications

References 64 publications

Characteristic Mode Analysis for Microstrip Fed Conformal Metasurface Multiband Antenna

Characteristic Mode Analysis for Microstrip Fed Conformal Metasurface Multiband Antenna

Compact Circularly Polarized Monopole Antenna Using Characteristic Mode Analysis

Quad-Port Circularly Polarized MIMO Antenna with Wide Axial Ratio

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