Analysis of a single shorted rectangular microstrip antenna for 50Ωmicrostrip line feed

Rathod, S. M.; Awale, R. N.; Ray, K. P.

doi:10.1109/apsym.2016.7929146

Cited by 3 publications

(7 citation statements)

References 6 publications

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“…Further, Table III loaded HMSAs is at least 20 dB better than that of a single shorting post HMSA for both the angular ranges (configuration A and B). This is a notable improvement in the value of CTCR as compared to that obtained from the inset fed HMSA as listed in Table I, as well as RMSA as reported in [10][11].…”

Section: Pair Of Shorting Post-50ω-ms-line Fed Hmsamentioning

confidence: 55%

“…HMSAs with the pair of shorting posts gives more than 20 dB suppression of cross-polarization level in boresight direction in comparison with that of a single shorted HMSA, in H-plane. This suppression is 10 dB higher as compared to that reported for the RMSA with a pair of shorting posts [10], [11]. Simulation has been performed using IE3D software [18].…”

Section: A 50ω Microstrip Line Fed Shorted Hexagonal Microstrip Antenmentioning

confidence: 89%

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A 50Ω Microstrip Line Fed Shorted Hexagonal Microstrip Antennas with Reduced Cross-Polarization

Rathod¹,

Awale²,

Ray

2019

J. Microw. Optoelectron. Electromagn. Appl.

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A Hexagonal Microstrip Antenna (HMSA) is an approximation to a Circular MSA (CMSA), which is not symmetrical over two principal planes, unlike a CMSA. Consequently, two types of feed positions are feasible for each X and Y-axes. When a quarter-wave transformer or inset feed is used to match the edge impedance of the HMSA, it becomes asymmetrical over the feed axis (E-plane), which leads to increase in the crosspolarization level in the H-plane. In this paper, to reduce the crosspolarization level of HMSA along H-plane and to match the edge impedance of the HMSA on each X and Y-axes with the 50Ω-Microstrip (MS)-line-feed, a single and a pair of shorting posts have been used. The current distribution of the shorted HMSA is changed due to the loading of shorting posts into the patch, which in-turns help to match the edge input impedance. A detailed investigation on the characteristics of the shorted HMSA with modified fundamental mode frequencies has been presented. The co-polarization to crosspolarization ratios (CTCR) in H-plane of the HMSA with a pair of shorting posts has been reduced substantially by more than 20 dB at the broadsight direction in comparison with that of an HMSA with a single shorting post or with an inset. The simulated results of the HMSA with direct 50Ω-MS-line-feed are in good agreement with measured ones.

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Section: Pair Of Shorting Post-50ω-ms-line Fed Hmsamentioning

confidence: 55%

Section: A 50ω Microstrip Line Fed Shorted Hexagonal Microstrip Antenmentioning

confidence: 89%

A 50Ω Microstrip Line Fed Shorted Hexagonal Microstrip Antennas with Reduced Cross-Polarization

Rathod¹,

Awale²,

Ray

2019

J. Microw. Optoelectron. Electromagn. Appl.

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“…Compact and shorted configurations of rectangular, circular and triangular antennas with the shorting post technique have been reported in [2,4]. Besides realizing compactness, the shorting technique has also been used to obtain dual-frequency response [5], tunability [9], impedance matching [10][11][12][14][15][16], etc. Recently, various configurations of compact and broadband MSAs have been reported using shorting techniques [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…A rectangular MSA (RMSA) provides flexibility for directly feeding through 50 Ω-MS-line along the non-radiating edges [2,3,11,16]. However, there is no flexibility to feed Circular MSA (CMSA) directly with 50 Ω-MS-line as there are no non-radiating edges all along the periphery [2,3,11].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, it requires additional TRL calibration kit to de-embed the input impedance. It is mostly preferred, at least in lower microwave frequency range, to feed MSA with 50 Ω-MS-line [16]. In [14,15], the co-polarization to cross-polarization ratios (CTCR) in H-plane of the pair of shorting posts RMSA have been reported to be lower by 10 dB in comparison with that of a single shorting post RMSA.…”

Section: Introductionmentioning

confidence: 99%

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Shorted Circular Microstrip Antennas for 50 Ω Microstrip Line Feed With Very Low Cross Polarization

Rathod¹,

Awale²,

Ray³

2018

PIER Letters

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A circular microstrip antenna (CMSA) cannot be fed directly with 50 Ω microstrip (MS) line, without an inset or an impedance transformer, as all around the periphery the impedance is equally high. The feeding technique such as inset fed or quarter wave transformer makes the antenna geometry asymmetrical. In this paper, a technique using single shorting post and a pair of shorting posts is proposed to match the peripheral impedance of the CMSA with that of the 50 Ω-MS-line feed for operation around 2.45 GHz. The shorting posts perturb the current distribution on the patch, altering the input impedance at the periphery. By selecting proper shorting posts positions a wide range of impedance has been adjusted without altering the patch geometry. Due to symmetric arrangement of the double shorting posts, the proposed antenna configuration has a very low cross-polarization ratio of better than −65 dB at the broadside direction for 2.45 GHz. The simulated results of the directly fed 50 Ω-MS-line CMSAs are experimentally validated with good agreement.

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Analysis of Circular Microstrip Antenna with Single Shorting Post for 50 Ω Microstrip-Line Feed

Rathod¹,

Awale²,

Ray

2018

Lecture Notes on Data Engineering and Communications Technologies

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Analysis of a single shorted rectangular microstrip antenna for 50Ωmicrostrip line feed

Cited by 3 publications

References 6 publications

A 50Ω Microstrip Line Fed Shorted Hexagonal Microstrip Antennas with Reduced Cross-Polarization

A 50Ω Microstrip Line Fed Shorted Hexagonal Microstrip Antennas with Reduced Cross-Polarization

Shorted Circular Microstrip Antennas for 50 Ω Microstrip Line Feed With Very Low Cross Polarization

Analysis of Circular Microstrip Antenna with Single Shorting Post for 50 Ω Microstrip-Line Feed

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