Study on ellipticity properties of single-feed-type circularly polarised microstrip antennas

Haneishi, Misao; Nambara, T.; Yoshida, Shinichiro

doi:10.1049/el:19820132

Cited by 34 publications

(13 citation statements)

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“…This method reduces the number of circuit components for phasing and combining signals, thereby reducing manufacturing cost and RF loss. The design method is derived from the standard practice of introducing perturbation segments to produce degenerate orthogonal modes using a single feed [8,9]. In this case, the novel perturbation segment is a shunted stub extending radially from the shorted inner radius of the SAP out to a prescribed distance, illustrated in Figure 3.…”

Section: Shunted Stubs For Circular Polarizationmentioning

confidence: 99%

A Horizon Ring Nulling Shorted Annular Patch Antenna With Shunted Stubs

McMichael¹,

Lundberg²,

Hanna³

et al. 2017

PIER M

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Abstract-A dual-band shorted annular ring patch antenna with interference rejection at the horizon is presented for GPS timing applications. It is shown that the dimensions of the annular ring can be optimized to make a null in the RHCP pattern at low elevation near the horizon for all azimuth angles. This null attenuates interfering signals originating from ground based sources. The antenna achieves circular polarization utilizing radial shunted stubs. The effect of the stubs on the resonance is analytically derived and verified through simulations. A novel feed configuration that incorporates a coplanar waveguide transition improves the impedance match for both L1 and L2 GPS frequency bands compared to previous designs that present compromises between the feed impedance of the two bands. Additionally, since the shunted stubs reduce the number of required electronic components compared to other antennas with similar horizon nulling capability, the cost is reduced. A prototype antenna operating at GPS L1 and L2 bands has been fabricated and validated through measurements.

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Section: Shunted Stubs For Circular Polarizationmentioning

confidence: 99%

A Horizon Ring Nulling Shorted Annular Patch Antenna With Shunted Stubs

McMichael¹,

Lundberg²,

Hanna³

et al. 2017

PIER M

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“…Mobile-to-satellite systems often require circularly polarised antennas. These can be produced in the discussed arrays by introducing notch perturbations to the patches, with no modification required to the feed structure [9]. All the presented arrays are linearly polarised.…”

Section: Array Designmentioning

confidence: 99%

Scanned microstrip arrays using simple integrated ferrite phase shifters

Batchelor

Economou

Langley

2000

IEE Proc., Microw. Antennas Propag.

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A phase-steered microstrip antenna array is presented, suitable for application as a mobile vehicle satellite terminal. Phase shifters are implemented on a hybrid dielectric-ferrite substrate, and use is made of the phase transition near the cut-off region of the biased ferrite. Small permanent magnets and carefully biased ferrites remove the need for large applied electromagnetic fields. 2-, 3-and 4-clement demonstrator arrays have been constructed, and np to 30 beam squint has been achieved For applied magnetic biases of' about 1000e.

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“…OA and OB represent the major and minor axes of the polarization ellipse, respectively, while E x 0 and E y 0 represent the maximum magnitudes of the electric field along the x-and y-directions. A general planar microstrip patch antenna on its own does not radiate CP wave; subsequently, some modifications should be done to the patch antenna to be able to generate the circular polarization [3][4][5][6][7][8][9][10]. In the following sections of this review, a detailed discussion is presented about the various techniques adopted by researchers to generate circular polarization.…”

Section: Introductionmentioning

confidence: 99%

A review on circularly polarized antennas, trends and advances

Banerjee

Karmakar

Saha³

2020

Int. J. Microw. Wireless Technol.

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This literature presents a comprehensive, technical review of circularly polarized (CP) antennas for different applications in wireless communication, emphasizing on the recent developments in the concerned research. The article also presents a comparative study of various works reported in the open literature, with an aim to highlight the contribution of CP antenna systems in the chronological development of the wireless communication technology. The primary motive of this review is to (a) highlight the methodologies used by different researchers to portray and analyze the different aspects in which CP antennas find their applications in modern-day wireless communication, (b) provide a practical viewpoint of the future scope of the study, based upon the past and present state-of-art research trends and (c) provide a conceptual and technical support to present-day antenna designers to help the process of furtherance of innovation and multiple system integration. In conclusion, the article also throws some light upon the future scope of research in the vast domain of CP antenna applications.

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Study on ellipticity properties of single-feed-type circularly polarised microstrip antennas

Cited by 34 publications

References 0 publications

A Horizon Ring Nulling Shorted Annular Patch Antenna With Shunted Stubs

A Horizon Ring Nulling Shorted Annular Patch Antenna With Shunted Stubs

Scanned microstrip arrays using simple integrated ferrite phase shifters

A review on circularly polarized antennas, trends and advances

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