Compact, broadband double‐slot waveguide radiator

Kisliuk, M.; Axelrod, A.; Maoz, J.

doi:10.1002/mop.4650010405

Cited by 1 publication

(2 citation statements)

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“…The self-admittance being the most dominant term, needs to be evaluated exactly using techniques that are used for evaluating the external admittance [21]. For air filled waveguides, Y 00 is the same as Y e or the external admittance in (3) or (5).…”

Section: Mom Formulationmentioning

confidence: 99%

“…Transverse slots in the broadwall of a waveguide can be used in low thickness array antennas where the polarisation is directed along the axis of the waveguide [1]. Transverse slots in waveguides terminated in a short at a suitable distance from the slot can be used as a standalone broadband antenna [2] and its bandwidth may be increased further using a double slot radiator with wide angle coverage [3]. Closely spaced transverse slot arrays can be used as frequency scanning antennas scanning along with the axial direction [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

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Analysis of a rectangular waveguide transverse slot using MoM and image method

Kakatkar

Deshmukh

Ray

2020

IET Microwaves, Antennas & Propagation

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A waveguide fed transverse slot has been analysed using the Method of Moments (MoM) formulation, wherein the internal admittance matrix elements have been evaluated from image theory and using the images of the slot due to waveguide walls. The contribution from all the images not in the same row as the slot has been evaluated using a closed‐form expression and a rapidly converging series with negligible contribution. The contribution from the row containing the reference slot has been evaluated by adding the mutual admittance between a few images and the reference slot using some recently developed simple and accurate approximations. The formulation has been extended to transverse slots radiating between the baffles. The results calculated using this simple, efficient and intuitive method are in excellent agreement with other theoretical as well as measured results. The technique can be extended to other slot configurations such as an inclined slot and for other slot aperture distributions such as with an edge condition in configurations permitting image formation.

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Section: Mom Formulationmentioning

confidence: 99%