# US 12,224,489 B2 · Antenna shielding in a capacitance module

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- Number: US 12,224,489 B2
- Document ID: US12224489B2
- Status: Granted
- Kind: B2
- Application number: 18/442,337
- Filed: 2024-02-15
- Published: 2024-06-06
- Granted: 2025-02-11
- Earliest claimed: 2022-07-26
- Assignees: Cirque Corporation
- Applicants: Cirque Corporation
- Inventors: David Taylor
- Web page: https://patentgrep.com/patent/US12224489B2

## CPC

- H01Q 1/2291: {used in Bluetooth® or Wi-Fi® devices of Wireless Local Area Networks [WLAN] (H01Q1/241 takes precedence; WLAN in general H04W)}
- H01Q 1/526: {Electromagnetic shields}
- H01Q 1/2266: {disposed inside the computer}
- H01Q 1/38: formed by a conductive layer on an insulating support {(patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142)}
- H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72)

## Abstract

An apparatus may include a substrate including a capacitance sensing electrode, an antenna on the substrate, and a shield feature between the electrodes and the antenna.

## Claims

### Claim 1

An apparatus, comprising: a stack of layers; a capacitive sensor layer in the stack of layers; a set of electrodes on the capacitive layer; an antenna on the capacitive layer;
and a shield feature between at least a portion of the set of electrodes and the antenna; wherein the stack of layers includes a first capacitive sensor layer and a second capacitive sensor layer, and the antenna is formed on at least one of the capacitive sensor layers; and wherein the shield feature is formed on both the first capacitive sensor layer and the second capacitive sensor layer;
wherein the shield feature surrounds a portion of the set of electrodes.

### Claim 2 (depends on 1)

The apparatus of claim 1, wherein the shield feature includes a ground ring.

### Claim 3 (depends on 1)

The apparatus of claim 1, wherein the shield feature includes multiple sections.

### Claim 4 (depends on 3)

The apparatus of claim 3, wherein the multiple sections are electrically independent.

### Claim 5 (depends on 3)

The apparatus of claim 3, wherein the multiple sections are electrically connected.

### Claim 6 (depends on 1)

The apparatus of claim 1, wherein the antenna surrounds the set of electrodes on the capacitive layer.

### Claim 7 (depends on 1)

The apparatus of claim 1, wherein a portion of the shield feature is ungrounded.

### Claim 8 (depends on 1)

The apparatus of claim 1, wherein a portion of the shield feature is grounded.

### Claim 9 (depends on 1)

The apparatus of claim 1, wherein the shield feature does not overlap a portion of the set of electrodes.

### Claim 10 (depends on 2)

The apparatus of claim 2 wherein the electrodes in the set of electrodes pass through a via in the capacitive sensor layer wherever the electrodes and ground ring would overlap.

### Claim 11 (depends on 1)

The apparatus of claim 1, wherein the shield feature surrounds the antenna.

### Claim 12 (depends on 1)

The apparatus of claim 1, wherein the shield feature includes at least a section that is electrically conductive.

### Claim 13 (depends on 1)

The apparatus of claim 1, wherein the shield feature includes at least a section that is magnetically conductive.

### Claim 14 (depends on 1)

The apparatus of claim 1, wherein the shield feature includes at least a section that is magnetically conductive and electrically insulating.

### Claim 15 (depends on 1)

The apparatus of claim 1, wherein the shield feature includes a ferrite material.

### Claim 16 (depends on 1)

The apparatus of claim 1, wherein the stack of layers includes a first capacitive sensor layer and a second capacitive sensor layer, and the antenna is formed on at least one of the capacitive sensor layers.

### Claim 17 (depends on 16)

The apparatus of claim 16, wherein the shield feature is formed on both the first capacitive sensor layer and the second capacitive sensor layer.

### Claim 18

An apparatus, comprising: a substrate including a set of capacitance sensing electrodes; an antenna on the substrate; and a shield feature on the substrate between the set of electrodes and the antenna; wherein the substrate includes a first capacitive sensor layer and a second capacitive sensor layer, and the antenna is formed on at least one of the capacitive sensor layers; and wherein the shield feature is formed on both the first capacitive sensor layer and the second capacitive sensor layer; wherein the shield feature surrounds the set of electrodes.