Waveguide septum polarizer shaped with Legendre polynomials

Angevain, Jean-Christophe; Fonseca, Nelson J. G.

doi:10.23919/eucap.2017.7928324

Cited by 26 publications

(17 citation statements)

References 12 publications

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“…A waveguide polarizer with longitudinal septum is the most frequently used kind of polarization converters and dividers [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25]. The main benefit of this polarizer consists in its compact structure, which combines the functions of an orthogonal mode selector and polarization converter.…”

Section: Designs Of Modern Waveguide Polarizersmentioning

confidence: 99%

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Comparative Analysis of Compact Satellite Polarizers Based on a Guide with Diaphragms

Piltyay

Bulashenko

Fesyuk

et al. 2021

AEM

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In this article we carry out the comparative analysis of new compact satellite polarisers based on a square guide with diaphragms. The main electromagnetic parameters of the developed microwave guide devices with various amount of diaphragms were obtained within the satellite frequency interval from 10.7 GHz to 12.75 GHz. Waveguide polarization converters with different amount of diaphragms from 2 to 5 have been designed and optimized. The main parameters of the presented polarizer were calculated applying the numerical method of finite integration in the frequency domain. Optimization of the electromagnetic parameters of the developed waveguide devices was carried out using the software CST Microwave Studio. As a result, sizes of the device designs have been optimized for the provision of improved polarization and phase parameters. The performed analysis showed that a waveguide polarizer with five diaphragms has the best electromagnetic parameters. The developed compact polarizer with five diaphragms based on a square guide provides a minimum deviation of the output phase difference from 90 degrees and high level of isolation between linear polarization over the entire operating frequency range. Presented in the article compact waveguide polarization converters can be applied in satellite systems, which require efficient polarization separation of signals.

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Section: Designs Of Modern Waveguide Polarizersmentioning

confidence: 99%

“…It provides the simultaneous operation at two orthogonal circular polarizations. In [21] a septum polarizer design was proposed for the range 27.5-30.0 GHz. The longitudinal profile of the septum was formed using Legendre polynomials.…”

Section: Designs Of Modern Waveguide Polarizersmentioning

confidence: 99%

Comparative Analysis of Compact Satellite Polarizers Based on a Guide with Diaphragms

Piltyay

Bulashenko

Fesyuk

et al. 2021

AEM

View full text Add to dashboard Cite

show abstract

Section: Designs Of Modern Waveguide Polarizersmentioning

confidence: 99%

Comparative Analysis of Compact Satellite Polarizers Based on a Guide with Diaphragms

Piltyay¹

2021

Preprint

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In this article we carry out the comparative analysis of new compact satellite polarisers based on a square guide with diaphragms. The main electromagnetic parameters of the developed microwave guide devices with various amount of diaphragms were obtained within the satellite frequency interval from 10.7 GHz to 12.75 GHz. Waveguide polarization converters with different amount of diaphragms from 3 to 5 have been designed and optimized. The main parameters of the presented polarizer were calculated applying the numerical method of finite integration in the frequency domain. Optimization of the electromagnetic parameters of the developed waveguide devices was carried out using the finite elements method in the frequency domain. As a result, sizes of the guide polarizer designs have been optimized for the provision of improved polarization and phase parameters. The performed analysis showed that a waveguide polarizer with five diaphragms has the best electromagnetic parameters. The developed compact polarizer with five diaphragms based on a square guide provides a minimum deviation of the output phase difference from 90 degrees and high level of isolation between linear polarization over the entire operating frequency range. Presented in the article compact waveguide polarization converters can be applied in modern satellite systems, which require efficient polarization transformation and separation of signals.

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“…Specifically, it is a SIW notched-septum polariser. While notched-septum polarisers achieve narrower axial ratio bandwidths than other septum polarisers [22][23][24], they are smaller in length and are thus more suitable for mobile devices. While other waveguide polarisers exist, they have not seen implementations in SIW due to manufacturing complexity [25,26].…”

Section: Antenna Element Designmentioning

confidence: 99%

Circularly‐polarised end‐fire antenna and arrays for 5G millimetre‐wave beam‐steering systems

Al-Amoodi

Honari

Mirzavand

et al. 2020

IET Microwaves, Antennas & Propagation

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This study presents a circularly‐polarised substrate‐integrated waveguide end‐fire antenna and four‐antenna arrays for 5G beam‐steering mobile devices at 28 GHz. Polarisation is achieved through implementation of a substrate‐integrated waveguide notched‐septum polariser. It is then loaded with a dielectric lens to improve gain, axial ratio bandwidth, and circular polarisation (CP) purity. To suppress the mutual coupling between array elements, vias are extended on either side of the lens. It also improves the single‐element axial ratio and front‐to‐back ratio. The antenna's performance is found to be resilient to typical manufacturing tolerances for the lens and via extensions. The element and arrays are manufactured and measured. The prototypes demonstrated an impedance bandwidth of 11.4% with a maximum array gain of 10.5 dBi and a steering range of up to ±35° (with reduced performance when steered to ±45°). Within this range, the antenna array demonstrates a gain variation of up to 3 dB and very good CP purity within the radiation half‐power beamwidths (HPBWs). A wide single‐element elevation HPBW of 95° is also demonstrated. Given its performance and ease of manufacture in a printed circuit board process, the proposed antenna could be a strong candidate for 5G millimetre‐wave beam‐steering systems.

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Waveguide septum polarizer shaped with Legendre polynomials

Cited by 26 publications

References 12 publications

Comparative Analysis of Compact Satellite Polarizers Based on a Guide with Diaphragms

Comparative Analysis of Compact Satellite Polarizers Based on a Guide with Diaphragms

Comparative Analysis of Compact Satellite Polarizers Based on a Guide with Diaphragms

Circularly‐polarised end‐fire antenna and arrays for 5G millimetre‐wave beam‐steering systems

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