High performance and high power circularly polarized horn antenna for K-band microwave processing systems

Hung, P. H.; Hsieh, Yao-Hung; Cheng, F. H.; Wang, J. D.; Chen, S. H.

doi:10.1063/1.5045632

Cited by 4 publications

(5 citation statements)

References 24 publications

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“…In the previous research results [4], it is found that the single ridge structure has a very good effect on narrow frequency applications. In the proposed design, double ridge structure is used since the single ridge structure cannot meet the design conditions at both the low-frequency band (26.5-30.0 GHz) and the high-frequency band (36.0-40.0 GHz).…”

Section: Circularly Polarized Convertermentioning

confidence: 90%

“…Circular polarization antennas are also used in general communication systems to reduce polarization mismatch, increase signal coverage, and inhibit multipath errors [1]. The grooved waveguide, iris-loaded waveguide, septum polarizer, and ridge circular waveguide are the main design structures of circularly polarized antennas [4].…”

Section: Introductionmentioning

confidence: 99%

“…In order to satisfy the space of mm-wave band operated conditions, the WR-28 rectangular waveguide was used to design the input port. The mode converter, the double-ridge polarization converter [4], and the corrugated horn are the main components of this proposed antenna. The double-ridge circular waveguide can be used to design a high performance circularly polarized converter.…”

Section: Introductionmentioning

confidence: 99%

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The Uses of a Dual-Band Corrugated Circularly Polarized Horn Antenna for 5G Systems

Liu

Rao²,

Hung

et al. 2022

Micromachines

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This paper presents the development of a wide-beam width, dual-band, omnidirectional antenna for the mm-wave band used in 5G communication systems for indoor coverage. The 5G indoor environment includes features of wide space and short range. Additionally, it needs to function well under a variety of circumstances in order to carry out its diverse set of network applications. The waveguide antenna has been designed to be small enough to meet the requirements of mm-wave band and utilizes a corrugated horn to produce a wide beam width. Additionally, it is small enough to integrate with 5G communication products and is easy to manufacture. This design is simple enough to have multi-feature antenna performance and is more useful for the femtocell repeater. The corrugated circularly polarized horn antenna has been designed for two frequency bands; namely, 26.5–30 GHz for the low band and 36–40 GHz for high band. The results of this study show that return-loss is better than 18 dB for both low and high band. The peak gain is 6.1 dBi for the low band and 8.7 dBi for the high band. The beam width is 105 degrees and 77 degrees for the low band and the high band, respectively. The axial ratio is less than 5.2 dB for both low and high band. Generally, traditional circularly polarized antennas cannot meet the requirements for broadband. The designs for the antennas proposed here can meet the requirements of FR2 bandwidths. This feature limits axial ratio performance. The measurement error in the current experiment comes from the high precision control on the size of the ridge.

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Section: Circularly Polarized Convertermentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Uses of a Dual-Band Corrugated Circularly Polarized Horn Antenna for 5G Systems

Liu

Rao²,

Hung

et al. 2022

Micromachines

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“…The existing researches of polarizers mainly focus on the improvement of bandwidth and miniature design. The representative polarizers consist of metal screws [3], metal irises [4], metal stepped septum [5,6], or dielectric-slab [7], which are placed into waveguide to differentiate the phase of the two orthogonally polarized components. These polarizers meet the demands of polarization conversion experiments and applications.…”

Section: Introductionmentioning

confidence: 99%

“…These polarizers meet the demands of polarization conversion experiments and applications. However, they could not meet the gigawatt-class high-power microwave applications for the tiny-size inserted abrupt structures [3][4][5][6], tending to cause local electric field concentration. Moreover, dielectric-slab polarizer [7] inevitably introduces triple junction, which is prone to result in RF breakdown.…”

Section: Introductionmentioning

confidence: 99%

High-Power Wideband Elliptical-Grooved Over-Mode Circular Waveguide Polarizer

Kong¹,

Li²,

Wang³

et al. 2020

PIER Letters

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The available polarizers either cannot afford gigawatt-class high-power microwave applications or are large in length. In this letter, a novel grooved polarizer is proposed. The grooves are proposed to be created in an over-mode circular waveguide to improve the power capacity and bandwidth. Moreover, the symmetric elliptical grooves are adopted to suppress high-order modes and realize the desired phase difference. An X-band polarizer prototype is designed and manufactured with length of 91 mm. Simulated results show that the power capacity of the polarizer is more than 1.5 GW. Measured results in accordance with simulations show that the axial ratio is less than 3 dB from 8.6 to 12.2 GHz, with relative bandwidth of 34.6%. The measured return losses are better than −12.7 dB in the same frequency range.

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A novel composite transmission metasurface with dual functions and its application in microstrip antenna

Guo

Cao

Gao

et al. 2020

Journal of Applied Physics

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Generally, a double corner-cut square structure transmission linear to circular polarization conversion metasurface (DCS-PCM) is difficult to realize circularly polarized radiation when it is applied to a linearly polarized microstrip antenna as electromagnetic surfaces superstrate. A novel composite transmission metasurface (NCTM) with dual functions of linear to circular polarization conversion and polarization selection is proposed and verified. For a y-polarized incident wave, transmission linear to right-hand circular polarization conversion can be realized from 8.43 GHz to 9.50 GHz, and for an x-polarized incident wave, co-polarized total reflection can be realized. Different from the DCS-PCM, the unit cell of the NCTM is made up of a corner-cut square, a substrate, and a polarization gate. Thanks to the novel design of polarization gates, the proposed NCTM is easier to realize circularly polarized radiation when it is applied to a linearly polarized source antenna. The realized gain of the antenna with NCTM can be improved because of the Fabry–Pérot resonant cavity, and the maximum amplitude of the gain improvement is 6.8 dBi. The results of simulation and experiment show that the linearly polarized microstrip antenna with NCTM can realize circularly polarized radiation with an axial ratio less than 3 dB and a significant gain improvement simultaneously.

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High performance and high power circularly polarized horn antenna for K-band microwave processing systems

Cited by 4 publications

References 24 publications

The Uses of a Dual-Band Corrugated Circularly Polarized Horn Antenna for 5G Systems

The Uses of a Dual-Band Corrugated Circularly Polarized Horn Antenna for 5G Systems

High-Power Wideband Elliptical-Grooved Over-Mode Circular Waveguide Polarizer

A novel composite transmission metasurface with dual functions and its application in microstrip antenna

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