High-Frequency Module
AssigneeNippon Telegraph and Telephone Corporation
InventorsHiroshi Hamada, Hideyuki Nosaka
Life of this patent
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Abstract
A plurality of waveguide structures are loaded on a top surface opposed to a bottom surface of a metal case, on which a high-frequency circuit is mounted, a height, a width, and a length of each of the plurality of waveguide structures have dimensions corresponding to a quarter-wave of a cutoff frequency indicating a frequency band of a target electromagnetic wave to be blocked, and a width and a length of each of the plurality of waveguide structures have dimensions that allow only a high-frequency wave of a mode to propagate in the frequency band.
Claims10
-4. (canceled)
A high-frequency module comprising:
- a metal case including a hollow rectangular box, the metal case being configured to house a high-frequency circuit in an interior space;
- and
- a plurality of waveguide structures on a top surface opposed to a bottom surface of the metal case, the bottom surface of the metal case being configured to attach the high-frequency circuit, wherein a height of each of the plurality of waveguide structures has a dimension corresponding to a quarter-wave of a cutoff frequency indicating a frequency band of a target electromagnetic wave to be blocked, and wherein a width and a length of each of the plurality of waveguide structures have dimensions that allow only a high-frequency wave of a TE10 mode to propagate in the frequency band.
A high-frequency module comprising:
- a metal case including a hollow rectangular box;
- a high-frequency circuit housed in an interior of the hollow rectangular box, wherein the high-frequency circuit is mounted to a first surface of the metal case;
- and
- a plurality of waveguide structures on a second surface of the metal case opposite the first surface of the metal case, wherein a height of each of the plurality of waveguide structures has a dimension corresponding to a quarter-wave of a cutoff frequency indicating a frequency band of a target electromagnetic wave to be blocked.
Dependencies are inferred from the claim text.