Hom damped high-frequency resonator
AssigneeHelmholtz-Zentrum Berlin fuer Materialien und Energie GmbH
InventorsErnst Weihreter, Frank Marhauser
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Abstract
A HOM attenuated high frequency resonator provided with a cylindrical resonator cavity on the outer surface of which are arranged three circular tapered waveguides with two symmetrically arranged ridges each, the cut-off frequency of the waveguide base mode being kept constant over the length of the waveguides by varying the height of the ridges, and the ridge waveguides being provided at their end of the smaller diameter with an impedance transformer each for the broadband adjustment of the coaxial line is to be cost-efficiently manufacturable as a compact structure and is to be of improved attenuation properties while at the same time having, relative to prior art arrangements, a high shunt impedance for the fundamental modes.
Claims10
A HOM attenuated high frequency resonator provided with a cylindrical resonator cavity (1) on the outer surface of which are arranged three circular tapered waveguides (2.1;
- 2.2;
- 2.3) with two symmetrically arranged ridges (S1.1 and S2.1;
- S1.2 and S2.2;
- S1.3 and S2.3) each, the cut-off frequency of the waveguide base mode being kept constant over the length of the waveguides (2.1;
- 2.2;
- 2.3) by varying the height of the ridges, and the ridge waveguides (2.1;
- 2.2;
- 2.3) being provided at their end of the smaller diameter with an impedance transformer (6.1;
- 6.2;
- 6.3) each for the broadband adjustment of the coaxial line,
- characterized by the fact that
- the waveguides (2.1;
- 2.2;
- 2.3) with two symmetrically arranged ridges (S1.1. ans S2.1;
- S1.2 and S2.2;
- SS1.3 and S2.3) for adjusting an asymmetry relative to the center plane of the cylindrical resonator cavity (1) are arranged offset on the outer surface of the resonator cavity (1),
- the waveguides (2.1;
- 2.2;
- 2.3) with the two symmetrically arranged ridges (S1.1 and S2.1;
- S1.2 and S2.2;
- S1.3 and S2.3) are structured for adjusting their angularity relative to the axis of the cylindrical resonator cavity (1) and the ridges (S1.1 and S2.1;
- S1.2 and S2.2;
- S1.3. and S2.3) of the waveguides (2.1;
- 2.2;
- 2.3) protrude into the cylindrical resonator cavity (1) such that the modes of higher order are optimally coupled.
A HOM attenuated high frequency resonator provided with a cylindrical resonator cavity (1) on the outer surface of which are arranged three circular tapered waveguides (2.1;
- 2.2;
- 2.3) with two symmetrically arranged ridges (S1.1 and S2.1;
- S1.2 and S2.2;
- S1.3 and S2.3) each, the cut-off frequency of the waveguide base mode being kept constant over the length of the waveguides (2.1;
- 2.2;
- 2.3) by varying the height of the ridges, and the ridge waveguides (2.1;
- 2.2;
- 2.3) being provided at their end of the smaller diameter with an impedance transformer (6.1;
- 6.2;
- 6.3) each for the broadband adjustment of the coaxial line,
- characterized by the fact that
- the waveguides (2.1;
- 2.2;
- 2.3) with two symmetrically arranged ridges (S1.1. ans S2.1;
- S1.2 and S2.2;
- SS1.3 and S2.3) for adjusting an asymmetry relative to the center plane of the cylindrical resonator cavity (1) are arranged offset on the outer surface of the resonator cavity (1),
- the waveguides (2.1;
- 2.2;
- 2.3) with the two symmetrically arranged ridges (S1.1 and S2.1;
- S1.2 and S2.2;
- S1.3 and S2.3) are structured for adjusting their angularity relative to the axis of the cylindrical resonator cavity (1) and the ridges (S1.1 and S2.1;
- S1.2 and S2.2;
- S1.3. and S2.3) of the waveguides (2.1;
- 2.2;
- 2.3) protrude into the cylindrical resonator cavity (1) such that the modes of higher order are optimally coupled.
Dependencies are inferred from the claim text.