Development of a 85&amp;amp;#x2232;115 GHz 90-deg phase shifter using corrugated square waveguide

Chung, Moon Hyun; Je, Do‐Heung; Han, Seog-Tae; Kim, Seung-Rae

doi:10.1109/eumc.2014.6986643

Cited by 9 publications

(3 citation statements)

References 4 publications

(4 reference statements)

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“…Another frequently used device for polarization transformation is a guide polarizer with diaphragms [26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43]. It allows to obtain better performance in wider relative bandwidths.…”

Section: Designs Of Modern Waveguide Polarizersmentioning

confidence: 99%

“…The developed polarizer provides an output phase difference of 90º ± 2.5º with a maximum reflection factor of −33 dB. Another efficient design of a waveguide polarizer for the frequency range 85-115 GHz was proposed in [38]. Designed polarizer provides an output phase difference of 90º ± 3.3º at the output port with a maximum value of the ellipticity factor of 0.6 dB.…”

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%

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

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“…The iris polarizer [9][10][11][12][13] is an alternative design of the waveguide polarizer, which provides better performance and wider fractional bandwidth. On the one hand, in dual-polarization antenna systems a waveguide iris polarizer functions only in the combination with an orthomode transducer [9], which makes the feed structure more complicated.…”

Section: Modern Waveguide Polarizers and Their Polarization Charactermentioning

confidence: 99%

Waveguide Iris Polarizers for Ku-band Satellite Antenna Feeds

Piltyay¹,

Bulashenko²,

Demchenko³

2020

J. Nano- Electron. Phys.

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At the present day, antennas and signals with dual or single circular polarizations are widely used in modern satellite telecommunication systems, television systems, satellite navigation systems, civil and military radars, mobile communication systems, wireless identification systems and wireless data networks. The widespread application of signals with circular polarizations is caused by their advantages over signals with polarization of other types. The key element of antenna systems with circular polarizations is a polarizer. It is a microwave device, which performs the transformation of the circularly polarized electromagnetic waves into the linearly polarized waves or vice versa. The combination of a polarizer and an orthomode transducer in the antenna feeds carries out the full conversion of two signals with orthogonal circular polarizations and their transmission to the isolated waveguide ports. This article presents results of the development, optimization and analysis of new designs of compact polarizers based on a square waveguide with irises. The characteristics of polarizers with different number of irises have been optimized for the operation in Ku-band 10.7-12.8 GHz. The electromagnetic characteristics of the waveguide polarizers were simulated and optimized using finite integration technique. The evolution of sizes of optimal polarizer designs and improvement of their performance have been analyzed for the polarizers with 3 and 4 irises. The better characteristics among the investigated waveguide iris polarizer designs are provided by the polarizer with 4 irises. Developed compact square waveguide polarizer with 4 irises provides highlyefficient performance in the operating Ku-band 10.7-12.8 GHz and can be widely used in modern antenna feeds for satellite information systems.

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Analytical modeling and optimization of new Ku‐band tunable square waveguide iris‐post polarizer

Piltyay

Bulashenko

Sushko

et al. 2021

Int J Numerical Modelling

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A novel design of the polarizer based on a square waveguide with four posts and four irises for Ku‐band 10.7–12.8 GHz is proposed. The main advantage of the developed polarizer design is the option to tune its polarization characteristics by variation of the posts height. The equivalent circuit of the polarizer has been obtained using scattering and transfer matrices technique. Using this model, the polarization and matching characteristics of the suggested polarizer were optimized simultaneously using the trust region method. This method is reliable and robust since it provides good convergence properties. The novelty of this study lies in the use of a new waveguide polarizer structure based on a combination of irises and posts. Posts enable fine‐tuning of the polarizer performance, while irises promote wide operating frequency band. The following simulated characteristics of the optimal polarizer design were obtained: VSWR for the main modes of horizontal and vertical polarization is less than 1.47, the differential phase shift is within 90° ± 2.6°, the axial is less than 0.46 dB, and the XPD is higher than 32 dB in the operating frequency range. A developed polarizer can be applied in antenna feeds for satellite communication and radar systems.

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Development of a 85&#x2232;115 GHz 90-deg phase shifter using corrugated square waveguide

Cited by 9 publications

References 4 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

Waveguide Iris Polarizers for Ku-band Satellite Antenna Feeds

Analytical modeling and optimization of new Ku‐band tunable square waveguide iris‐post polarizer

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