H - Electricity – 01 – P
Patent
H - Electricity
01
P
333/109
H01P 5/08 (2006.01)
Patent
CA 1244897
Abstract A waveguide connection comprising the combination of a rectangular waveguide, an elliptical waveguide having a cutoff frequency and impedance different from those of said rectangular waveguide, an inhomogeneous stepped transformer joining said rectangular waveguide to said elliptical waveguide, said transformer having multiple sections all of which have inside dimensions small enough to cut off the first excitable higher order mode in a preselected frequency band, each section of said transformer having a transverse cross-section defined by the equation: (2X/a)p + (2y/b)p = 1, where a is the dimension of the inside surface of said cross- section along the major transverse axis, b is the dimension of the inside surface of said cross-section along the minor transverse axis, and x and y define the location of each point on the inner surface of the cross-section with reference to the coordinate system established by the major and minor transverse axes of the cross-section, respectively, the value of said exponent p increasing progressively from the section adjacent to said elliptical waveguide to the section adjacent to said rectangular waveguide, and the magnitudes of a and b changing progressively from step to step along the length of said transformer so that both the cutoff frequency and the impedance of said transformer change monotonically along the length of said transformer.
500637
Andrew Corporation
Marks & Clerk
LandOfFree
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