Cross-Polarization Suppression in Probe-Fed Circular Patch Antenna Using Two Circular Clusters of Shorting Pins

Samanta, Susamay; Reddy, P Soni; Mandal, Kaushik

doi:10.1109/tap.2018.2819895

Cited by 39 publications

(17 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Also, detailed investigation of various resonant modes generated in a shorted MS-line fed square MSA has been reported in [14]. Recently, new configurations of probe-fed MSAs was reported [15], [16]. These antenna configurations have reduced cross-polarization in H-plane using a pair of symmetric circular clusters of shorting pins [15] and array of shorting pins along with a pair of shorting walls [16].…”

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

confidence: 99%

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

Rathod¹,

Awale²,

Ray

2019

J. Microw. Optoelectron. Electromagn. Appl.

View full text Add to dashboard Cite

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.

show abstract

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

confidence: 99%

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

Rathod¹,

Awale²,

Ray

2019

J. Microw. Optoelectron. Electromagn. Appl.

View full text Add to dashboard Cite

show abstract

“…14 Shorting pins/walls technique is effectively in the suppression of X-polarization. [15][16][17] In Reference 15, a patch with shorting wall and pins achieves a bandwidth of 26.2% and the Hplane X-polarization is decreased to below −12.3 dB. Shorting pins in References 16 and 17 improve the Xpolarization by 10 and 30 dB, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…The H‐plane X ‐polarization of a shorted patch is reduced from −4.3 to −21.4 dB by loading open‐ended stubs 14 . Shorting pins/walls technique is effectively in the suppression of X ‐polarization 15‐17 . In Reference 15, a patch with shorting wall and pins achieves a bandwidth of 26.2% and the H‐plane X ‐polarization is decreased to below −12.3 dB.…”

Section: Introductionmentioning

confidence: 99%

“…In Reference 15, a patch with shorting wall and pins achieves a bandwidth of 26.2% and the H‐plane X ‐polarization is decreased to below −12.3 dB. Shorting pins in References 16 and 17 improve the X ‐polarization by 10 and 30 dB, respectively. The X ‐polarization can also be effectively reduced by differential‐fed technique 18‐20 .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Polarization and bandwidth improvements of a zeroth‐order resonators loaded microstrip antenna with grid polarization filter cover and metallic cavity

Peng

Wang

Xing

et al. 2020

Int J RF Microw Comput Aided Eng

View full text Add to dashboard Cite

In this research, the polarization and bandwidth of a zeroth-order resonators (ZORs) loaded microstrip antenna are improved by employing a grid polarization filter cover and a metallic cavity. The polarization improvement is owing to three operations, (a) the filter cover allows co-polarization wave passing through only, (b) the ZORs partly rotate the reflected cross-polarizations (X-polarizations) wave to be co-polarization, (c) the metallic cavity suppresses the fringe fields of the cover. The bandwidth enhancement is owing to the polarization cover that reflects the X-polarization, which forms a resonant cavity. The improvements of the simulated cross-polarizations range from 17.7 to 35.3 dB in the band. The measured bandwidth is increased from 940 MHz (17.22%) of the referenced antenna to 1390 MHz (24.5%) of the proposed antenna. The measured results verify the simulations.

show abstract

“…Recently, Samanta et al [16,17] proposed a simple and more effective methodology to achieve XP suppression in single probefed simple microstrip patch antennas like -hexagonal microstrip patch antenna (HMPA) and CMPA consisting of unique circular arrangement of shorting pins symmetrically aligned along the patch radius. A remarkable improvement in XP suppression of around 51 dB at the boresight in the principal radiation planes was achieved compared to above-mentioned methodologies.…”

Section: Introductionmentioning

confidence: 99%

Near‐field approach towards enhanced suppression of cross‐polarised radiation across different elevation planes using novel epsilon‐shaped clusters of shorting pins

Samanta

Mandal

Sarkar

2019

IET Microwaves, Antennas & Propagation

Self Cite

View full text Add to dashboard Cite

A circular microstrip patch antenna with novel epsilon (ϵ)‐shaped clusters of shorting pins (ECSP) is proposed in this paper to emphasise the improvement of cross‐polarisation (XP) suppression across different elevation planes of radiation at ϕ=0°, 45°, 90°, and 135° rather than considering only the principal radiation planes. The near‐field approach has been adopted to understand the basic of XP radiation from the antenna. The placement of two ECSP structures symmetrically along the H‐plane of the conventional circular microstrip patch antenna (CMPA) effectively suppresses its XP radiation not only across the principal radiation planes by 57 dB at the boresight and 26 dB over the tracking angle ±45° but also across the diagonal radiation planes by 58 dB at the boresight and 2 dB over the tracking angle ±45°. A detailed analysis on the evolution of ECSP structures from arc‐shaped clusters of shorting pins (ACSP) is presented. Symmetric distribution of antenna fields in the near‐field region results in better XP suppression in the far‐field region. The proposed design offers a considerably high gain of 8 dBi at the boresight. The fabricated prototype of the proposed design shows satisfactory agreement with the simulated results.

show abstract

Cross-Polarization Suppression in Probe-Fed Circular Patch Antenna Using Two Circular Clusters of Shorting Pins

Cited by 39 publications

References 19 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

Polarization and bandwidth improvements of a zeroth‐order resonators loaded microstrip antenna with grid polarization filter cover and metallic cavity

Near‐field approach towards enhanced suppression of cross‐polarised radiation across different elevation planes using novel epsilon‐shaped clusters of shorting pins

Contact Info

Product

Resources

About