Waffle iron filter arrangement for high-frequency signals

Patent metadata

Field	Value
Publication number	US-12347913-B2
Application number	US-202118032725-A
Country	US
Kind code	B2
Filing date	Oct 21, 2021
Priority date	Oct 21, 2020
Publication date	Jul 1, 2025
Grant date	Jul 1, 2025

Abstract

A filter arrangement for high frequency signals, HF signals, is described. The filter arrangement includes a housing in which there is a cavity that extends in the longitudinal direction of the housing. The waffle-iron arrangement is arranged in the cavity and includes a carrier plate having a plurality of recesses, wherein there is an electrically conductive material arranged in at least some of the recesses, wherein the electrically conductive material in each case forms a pin in the at least some recesses. This structure makes it possible to provide a filter arrangement for very high frequencies, because the structure allows the carrier plate and the pins arranged therein to be provided with very small geometrical dimensions.

First claim

The invention claimed is:

1. A filter arrangement for high-frequency signals (HF-signals) comprising:
a housing having a cavity extending in a longitudinal direction of the housing;
a waffle-iron arrangement arranged in the cavity;
wherein the waffle-iron arrangement comprises:
a carrier plate having a plurality of recesses; and
an electrically conductive material arranged in at least some of the plurality of recesses, wherein the electrically conductive material in each case forms a pin in the at least some recesses;

wherein the cavity of the housing includes two transformer portions and a waffle portion, wherein the waffle portion is arranged between the two transformer portions;
wherein the carrier plate is arranged in the waffle portion;
wherein the carrier plate includes a material that is permeable to the HF signals.

2. The filter arrangement as claimed in claim 1 ,
wherein the plurality of recesses in the carrier plate extend over an entire plate thickness of the carrier plate;
wherein each of the pins completely fills the respective one of the plurality of recesses.

3. The filter arrangement as claimed in claim 1 ,
wherein the pins in the recesses contain an electrically conductive epoxy resin.

4. The filter arrangement as claimed in claim 1 ,
wherein at least some of the plurality of recesses in which the pins are arranged have a circular cross-section.

5. The filter arrangement as claimed in claim 1 ,
wherein a surface of the carrier plate from which the plurality of recesses extend into the carrier plate has a coating;
wherein the coating comprises an electrically conductive material.

6. The filter arrangement as claimed in claim 1 ,
wherein the waffle-iron arrangement is connected to the housing in such a way that the pins in the recesses are galvanically connected to the housing.

7. The filter arrangement as claimed in claim 1 ,
wherein the waffle-iron arrangement is bonded to the housing by an adhesive layer comprising an electrically conductive adhesive.

8. The filter arrangement as claimed in claim 1 ,
wherein the carrier plate is a printed circuit board that is permeable to the HF signals.

9. The filter arrangement as claimed in claim 1 ,
further comprising a second waffle-iron arrangement connected to the housing;
wherein the second waffle-iron arrangement is opposite the first waffle-iron arrangement and is spaced from the first waffle-iron arrangement by a predefined distance.

10. The filter arrangement as claimed in claim 9 ,
wherein the pins of the waffle-iron arrangement extend in a direction of the second waffle-iron arrangement.

11. The filter arrangement as claimed in claim 1 ,
wherein the housing is an integral housing or is composed of two half-shells.

Assignees

• Tesat Spacecom Gmbh & Co Kg

Inventors

• Bartlett Chad
• Arnold Christian
• Höft Michael

Classifications

• H01P1/211 Primary

  Waffle-iron filters; Corrugated structures · CPC title