Conductive watch housing with slot antenna configuration

Patent metadata

Field	Value
Publication number	US-10484958-B2
Application number	US-201916293327-A
Country	US
Kind code	B2
Filing date	Mar 5, 2019
Priority date	Jan 5, 2018
Publication date	Nov 19, 2019
Grant date	Nov 19, 2019

Abstract

A wrist-worn electronic device includes a lower housing, including a lower surface and a side wall formed of electrically conductive material, an upper housing including a bezel formed of an electrically conductive material, and an antenna formed by a nonconductive slot between the lower and upper housings. The nonconductive slot may be formed between a first portion of a lower surface of the bezel along a circumference of the bezel, a first portion of a top surface of the side wall along a circumference of the side wall, and electrical connections between two electrical ground terminals on the top surface of the side wall and the two electrical ground locations on the lower surface of the bezel. The antenna may be configured to transmit or receive electronic signals to determine a current geographic location or allow wireless communication with other electronic devices.

First claim

What is claimed is:

1. A wrist-worn electronic device comprising:
a lower housing including a lower surface, a printed circuit board positioned above the lower surface, and a side wall formed of electrically conductive material, the side wall having a top surface including a plurality of electrical ground terminals;
an upper housing opposing the lower housing, the upper housing including a bezel formed of an electrically conductive material, the bezel having a lower surface corresponding to the top surface of the side wall and two electrical ground locations electrically coupled to two of the plurality of electrical ground terminals on the top surface of the side wall;
an electrically nonconductive ring between the lower surface of the bezel and the top surface of the side wall;
a first antenna configured to wirelessly transmit or receive a first electronic signal and formed by a first nonconductive slot formed between a first portion of the lower surface of the bezel along a circumference of the bezel between the two electrical ground locations, a first portion of the top surface of the side wall along a circumference of the side wall corresponding to the first portion of the lower surface of the bezel, and two electrical ground contacts each electrically coupling one of the two electrical ground terminals on the top surface of the side wall with one of the two electrical ground locations on the lower surface of the bezel, respectively;
a first electronic signal terminal; and
a communication element positioned on the printed circuit board and electrically coupled with the first electronic signal terminal, the communication element configured to transmit to or receive from the first antenna the first electronic signal to communicate with another electronic device or a communication network
wherein a height of the first nonconductive slot corresponds to a height of the electrically nonconductive ring.

2. The wrist-worn electronic device of claim 1 , wherein the two electrical ground terminals on the top surface of the side wall associated with the first antenna form a first pair of electrical ground terminals, and wherein the electrically nonconductive ring includes at least two openings through which the two electrical ground contacts pass to electrically couple the bezel with the two electrical ground terminals on the top surface of the side wall associated with the first antenna.

3. The wrist-worn electronic device of claim 1 , further comprising a first electrical signal contact electrically coupling the first electronic signal terminal with the bezel at a position along the first portion of the circumference of the bezel between the first pair of electrical ground locations, wherein the electrically nonconductive ring includes at least one opening through which the first electrical signal contact passes to electrically couple the bezel with the first electronic signal terminal associated with the first antenna.

4. The wrist-worn electronic device of claim 3 , wherein the two electrical ground contacts are electrically conductive spring contacts, and wherein the first electrical signal contact is an electrically conductive post.

5. The wrist-worn electronic device of claim 1 , wherein printed circuit board is electrically coupled to the conductive side wall, and wherein the combination of the printed circuit board and the side wall form a ground plane for the first antenna.

6. The wrist-worn electronic device of claim 1 , wherein the length of the first portion of the circumference of the bezel associated with the first antenna is one-half of a wavelength of the first electronic signal.

7. The wrist-worn electronic device of claim 2 , further comprising:
a second antenna formed by a second nonconductive slot formed between a second portion of a lower surface of the bezel along a circumference of the bezel between two electrical ground locations electrically coupled to two of the plurality of electrical ground terminals on the top surface of the side wall, a second portion of the top surface of the side wall along a circumference of the side wall corresponding to the second portion of the lower surface of the bezel, and two electrical ground contacts each electrically coupling one of the two electrical ground terminals on the top surface of the side wall with one of the two electrical ground locations on the lower surface of the bezel, respectively;
a second electronic signal terminal; and
a location determining element positioned on the printed circuit board and electrically coupled with the second electronic signal terminal, the location determining element configured to receive the second electronic signal from the second electronic signal terminal and determine a current geolocation of the electronic device based on the first electronic signal;
wherein the two electrical ground terminals associated with the second antenna form a second pair of electrical ground terminals.

8. The wrist-worn electronic device of claim 7 , further comprising a second electrical signal contact electrically coupling the second electronic signal terminal with the bezel at a position along the second portion of the circumference of the bezel between the second pair of electrical ground locations.

9. The wrist-worn electronic device of claim 7 , wherein the length of the second portion of the circumference of the bezel associated with the second antenna is one-half of a wavelength of the second electronic signal.

10. The wrist-worn electronic device of claim 7 , wherein the first pair of electrical ground terminals and the second pair of electrical ground terminals are positioned on the top surface of the side wall such that the first portion of the circumference of the bezel associated with the first antenna does not overlap with the second portion of the circumference of the bezel associated with the second antenna.

11. The wrist-worn electronic device of claim 2 , further comprising a switch electrically coupled with the plurality of electrical ground terminals including the electrical ground locations and a processing element electrically coupled with the switch;
wherein the first antenna is associated with a first aperture formed by the first nonconductive slot;
wherein the processing element is configured to:
select a second aperture for the first antenna, and
control the switch to electrically ground two of the plurality of electrical ground terminals other than the first pair of electrical ground terminals;

wherein the second aperture for the first nonconductive slot is formed between a second portion of the lower surface of the bezel along a circumference of the bezel between the two electrical ground locations, a second portion of the top surface of the side wall along a circumference of the side wall corresponding to the second portion of the lower surface of the bezel, and two electrical ground contacts each electrically coupling one of the two electrical ground terminals on the top surface of the side wall with one of the two electrical ground locations on the lower surface of the bezel, respectively.

12. A wrist-worn electronic device comprising:
a lower housing including a lower surface, a printed circuit board positioned above the lower surface, and a side wall formed of electrically conductive material, the side wall having a top surface including a plurality of electrical ground terminals;
a first electronic signal terminal configured to receive a first electronic signal;
an upper housing opposing the lower housing, the upper housing including a bezel formed of an electrically conductive material, the bezel having a lower surface corresponding to the top surface of the

Assignees

• Garmin Switzerland Gmbh

Inventors

• Sayem Abu T
• Russell Matthew L

Classifications

• H04M1/026

  Details of the structure or mounting of specific components · CPC title

• H01Q1/48

  Earthing means; Earth screens; Counterpoises · CPC title

• H05K7/1427

  Housings · CPC title

• H01Q1/273 Primary

  Adaptation for carrying or wearing by persons or animals · CPC title

• H04W64/00 Primary

  Locating users or terminals {or network equipment} for network management purposes, e.g. mobility management · CPC title