Full-wave design and optimization of circular waveguide polarizers with elliptical irises

Bertin, G.; Piovano, B.; Accatino, L.; Mongiardo, M.

doi:10.1109/22.993409

Cited by 71 publications

(49 citation statements)

References 16 publications

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“…Recently, and due to the mechanization effects of most common manufacturing techniques of waveguide components, the presence of rounded corners in rectangular waveguides has been under investigation in both guided [6] and radiating applications [7]. Another example of great practical interest is the elliptical waveguide, which has found increasing application in many passive microwave components, such as dual-mode [8] and triple-mode [9] filters, circular waveguide polarizers [10], radiators [11], resonators [12], and corrugated horns [13]. Therefore, the electromagnetic-wave propagation in hollow conducting waveguides of arbitrary cross section has become a problem of considerable practical interest, and many different approaches dealing with the calculation of the full modal spectrum of such waveguides have been published in the technical literature.…”

Section: Introductionmentioning

confidence: 99%

Efficient modal analysis of arbitrarily shaped waveguides composed of linear, circular, and elliptical arcs using the BI-RME method

Cogollos

Marini

Boria

et al. 2003

IEEE Trans. Microwave Theory Techn.

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Abstract-This paper deals with the accurate and efficient modal analysis of arbitrarily shaped waveguides whose cross section is defined by a combination of straight, circular, and/or elliptical arcs. A novel technique for considering the presence of circular and/or elliptical segments within the frame of the well-known boundary integral-resonant mode expansion (BI-RME) method is proposed. This new extended BI-RME method will allow a more accurate solution of a wider number of hollow conducting waveguides with arbitrary profiles, which are usually present in most modern passive waveguide components. To show the advantages of this new extended technique, the modal chart of canonical (circular and elliptical) waveguides, as well as of irises with great practical interest (i.e., cross-shaped irises with rounded corners) has been first successfully solved. Next, a computer-aided-design software package based on such a novel modal analysis tool has first been validated with the accurate analysis of a referenced complex dual-mode filter, and then applied to the complete design of a novel twist component for -band application based on circular and elliptical waveguides. A prototype of this novel device has been manufactured and measured for verification purposes.

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Section: Introductionmentioning

confidence: 99%

Efficient modal analysis of arbitrarily shaped waveguides composed of linear, circular, and elliptical arcs using the BI-RME method

Cogollos

Marini

Boria

et al. 2003

IEEE Trans. Microwave Theory Techn.

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“…Elliptical guides have been employed for the design of microwave passive components, as narrow-band dualmode filters [26,27] and polarizers implemented in circular waveguides [28]. In the research area of accelerator physics, elliptical guides have also been used for the simulation of the LHC (CERN) beam pipe, as reported in [13,14].…”

Section: Introductionmentioning

confidence: 99%

Multipactor Breakdown in Elliptical Waveguide Carrying Orthogonal Polarizations

Esfandiarpour¹,

Frtoanpour²

2016

PIER M

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Abstract-Multipactor effect is studied in a hollow elliptical waveguide carrying two orthogonal polarization modes, i.e., the fundamental (TE c11 ) and the second (TE s11 ) elliptical waveguide modes. The introduction of a modal equivalent voltage allows defining the standard axial ratio, which characterizes each polarization state of the problem. The RF breakdown threshold is determined as a function of the axial ratio, for various amplitudes, and phases of the two elliptical modes. In particular, the effect of second mode on the RF breakdown threshold of the fundamental mode is studied. The simulations are carried out for different values of the ellipse eccentricity.

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“…The waveguide septum polarizer has the advantage of compact size with three physical ports, but has a very limited bandwidth duo to phase shift of two orthogonal modes [12]; the dielectric-loaded polarizer has relative high loss. The polarizer for corrugations, dielectrics, and ridges are two physical ports, and need ortho-mode transducer (OMT) to separate the LHCP and RHCP.…”

Section: Introductionmentioning

confidence: 99%

Theory and Experiment of a Compact Waveguide Dual Circular Polarizer

Chang¹,

Church²,

Tantawi³

et al. 2012

PIER

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Abstract-A new compact and wide-band waveguide dual circular polarizer at Ka-band is presented and tested in this paper. This compact structure is composed of a three-port polarizing diplexer and a circular polarizer realized by a simple pair of large grooves. The polarizing diplexer includes two rectangular waveguides with a perpendicular H-plane junction, one circular waveguide coupled in Eplane. A cylindrical step and two pins are used to match this structure. For a LHCP or RHCP wave in the circular port, only one specific rectangular port outputs power and the other one is isolated. The accurate analysis and design of the circular polarizer are conducted by using full-wave electromagnetic simulation tools. The optimized dual circular polarizer has the advantage of compact size with a volume smaller than 1.5λ 3 , broad bandwidth, uncomplicated structure, and is especially suitable for use at high frequencies such as Ka-band and above. The prototype of the polarizer has been manufactured and test, the experimental results are basically consistent with the theories.

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Full-wave design and optimization of circular waveguide polarizers with elliptical irises

Cited by 71 publications

References 16 publications

Efficient modal analysis of arbitrarily shaped waveguides composed of linear, circular, and elliptical arcs using the BI-RME method

Efficient modal analysis of arbitrarily shaped waveguides composed of linear, circular, and elliptical arcs using the BI-RME method

Multipactor Breakdown in Elliptical Waveguide Carrying Orthogonal Polarizations

Theory and Experiment of a Compact Waveguide Dual Circular Polarizer

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