Apparatus with partitioned radio frequency antenna and matching network and associated methods

Patent metadata

Field	Value
Publication number	US-11894623-B2
Application number	US-202217705260-A
Country	US
Kind code	B2
Filing date	Mar 25, 2022
Priority date	Aug 29, 2016
Publication date	Feb 6, 2024
Grant date	Feb 6, 2024

Abstract

An apparatus includes a substrate and a loop antenna formed using the substrate. The loop antenna includes a set of gaps formed to isolate a first part of the loop antenna from a second part of the loop antenna.

First claim

The invention claimed is:

1. An apparatus, comprising:
a substrate comprising a ground plane;
a single-ended antenna formed using the substrate; and
a set of gaps used to isolate a first part of the ground plane from a second part of the ground plane.

2. The apparatus according to claim 1 , wherein the single-ended antenna comprises an inverted-F antenna (IFA).

3. The apparatus according to claim 1 , wherein the single-ended antenna comprises an inverted-L antenna (ILA).

4. The apparatus according to claim 1 , wherein the single-ended antenna comprises a monopole antenna.

5. The apparatus according to claim 1 , wherein the set of gaps isolates radio-frequency (RF) current flow in the first part of the ground plane from RF current flow in the second part of the ground plane.

6. The apparatus according to claim 1 , wherein the set of gaps comprises “L”-shaped gaps.

7. The apparatus according to claim 6 , wherein the “L”-shaped gaps are formed by extending a void into “L”-shaped features.

8. The apparatus according to claim 7 , wherein conductor material of a substrate, corresponding to the void and the set of gaps are stripped.

9. The apparatus according to claim 1 , wherein the set of gaps comprises straight-line gaps.

10. The apparatus according to claim 1 , wherein the set of gaps comprises radial slots.

11. A method of fabricating an apparatus, the method comprising:
fabricating a substrate comprising a ground plane;
forming a single-ended antenna using the substrate; and
forming a set of gaps used to isolate a first part of the ground plane from a second part of the ground plane.

12. The method according to claim 11 , wherein forming the single-ended antenna using the substrate comprises forming an inverted-F antenna (IFA).

13. The method according to claim 11 , wherein forming the single-ended antenna using the substrate comprises forming an inverted-L antenna (ILA).

14. The method according to claim 11 , wherein forming the single-ended antenna using the substrate comprises forming a monopole antenna.

15. The method according to claim 11 , wherein the set of gaps isolates radio-frequency (RF) current flow in the first part of the ground plane from RF current flow in the second part of the ground plane.

16. The method according to claim 11 , wherein forming the set of gaps comprises forming a set of “L”-shaped gaps.

17. The method according to claim 16 , wherein forming the set of “L”-shaped gaps comprises extending a void into “L”-shaped features.

18. The method according to claim 17 , wherein forming the set gaps comprises stripping conductor material of a substrate corresponding to the void and the set of gaps.

19. The method according to claim 11 , wherein the set of gaps comprises straight-line gaps.

20. The method according to claim 11 , wherein the set of gaps comprises radial slots.

Assignees

• Silicon Lab Inc

Inventors

• Zolomy Attila
• Voor Thomas E
• Vida Zoltan

Classifications

• H01Q7/00 Primary

  Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop · CPC title

• H01Q1/2291

  used in Bluetooth® or Wi-Fi® devices of Wireless Local Area Networks [WLAN] (H01Q1/241 takes precedence; WLAN in general H04W) · CPC title

• H01Q1/38

  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)} · CPC title

• H01Q1/48

  Earthing means; Earth screens; Counterpoises · CPC title

• H01Q1/52

  Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure (absorbing means H01Q17/00) · CPC title