# US 12,181,500 B2 · EMI resistant, optimized antenna

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- Number: US 12,181,500 B2
- Document ID: US12181500B2
- Status: Granted
- Kind: B2
- Application number: 17/319,258
- Filed: 2021-05-13
- Published: 2022-11-17
- Granted: 2024-12-31
- Earliest claimed: 2021-05-13
- Assignees: Honeywell International Inc.
- Applicants: Honeywell International Inc.
- Inventors: Kerrance Lynn Carpenter; Douglas Troy Collier
- Web page: https://patentgrep.com/patent/US12181500B2

## CPC

- G01R 21/14: Compensating for temperature change
- H01Q 9/28: Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines (waveguide horns or mouths H01Q13/00; slot antennas H01Q13/00)
- H01Q 1/2233: {used in consumption-meter devices, e.g. electricity, gas or water meters}
- H01Q 5/364: Creating multiple current paths
- H01Q 23/00: Antennas with active circuits or circuit elements integrated within them or attached to them
- G01R 22/063: {related to remote communication}
- G01R 22/066: {Arrangements for avoiding or indicating fraudulent use}
- G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12)
- H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72)

## Abstract

One embodiment is a device, which comprises a cable attached at a first end to a radio module, the cable having a plurality of electro-magnetic interference (EMI) resistant elements connected at a plurality of positions, a radial board wherein the cable is attached thereto at a second end, and an antenna connected to the radial board, the antenna being configured to receive power from the radio module and to radiate.

## Claims

### Claim 1

A device comprising:
a cable attached at a first end to a radio module, the cable having a plurality of electro-magnetic interference (EMI) resistant elements connected at a plurality of positions wherein the EMI resistant elements include first and second ferrites, the first ferrite spaced at a distance from the second ferrite;
a radial board wherein the cable is attached thereto at a second end; and
an antenna connected to the radial board, the antenna being configured to receive power from the radio module and to radiate,
wherein the antenna has first and second portions, the first and second portions being mechanically asymmetrical, and
wherein an electrical effect between the plurality of EMI resistant elements and the mechanically asymmetrical first and second portions results in the antenna being substantially electrically symmetrical.

### Claim 2 (depends on 1)

The device of claim 1, wherein the first and second portions have first and second horizontal ridges.

### Claim 3 (depends on 2)

The device of claim 2, wherein the first horizontal ridge is longer then the second horizontal ridge.

### Claim 4 (depends on 1)

The device of claim 1, wherein the first and second ferrites are spaced a second distance from the first end of the cable.

### Claim 5 (depends on 1)

The device of claim 1, further comprising a board wherein the antenna is affixed thereto, and wherein the antenna is electrically symmetrical with respect to elements on the board.

### Claim 6 (depends on 2)

The device of claim 2, wherein a difference in geometry between the first horizontal ridge and the second horizontal ridge is based on an impedance of the cable.