Capacitive-fed monopole antenna

Patent metadata

Field	Value
Publication number	US-10109922-B2
Application number	US-201514870485-A
Country	US
Kind code	B2
Filing date	Sep 30, 2015
Priority date	Sep 30, 2015
Publication date	Oct 23, 2018
Grant date	Oct 23, 2018

Abstract

A monopole antenna structure disclosed herein includes a ceramic block with a metallic surface coupled to a feed structure and a planar radiation element electrically floating relative to the ceramic block. The planar radiation element is in a parallel plane alignment with the metallic surface of the ceramic block. When the feed structure provides signal of one or more select frequencies to the metallic surface of the ceramic block, the ceramic block radiates (e.g., transmits a carrier wave) and in turn, excites the planar radiation element to re-radiate the signal.

First claim

What is claimed is:

1. A monopole antenna system comprising:
a ceramic block including a metallic surface coupled to a feed structure; and
an ungrounded planar radiation element physically separated from the ceramic block and including a planar surface in a parallel plane alignment with the metallic surface of the ceramic block and further including a notch formed in a corner portion that is in overlap alignment with a portion of the ceramic block, wherein the ceramic block capacitively couples to the ungrounded planar radiation element across a dielectric spacer.

2. The monopole antenna system of claim 1 , wherein the ceramic block is in a partial overlap alignment with the ungrounded planar radiation element.

3. The monopole antenna system of claim 1 , wherein the ceramic block and the ungrounded planar radiation element each include one or more edges arranged in an edge-to-edge overlap alignment.

4. The monopole antenna system of claim 1 , wherein the ceramic block and the ungrounded planar radiation element each include two edges arranged in an edge-to-edge overlap alignment.

5. The monopole antenna system of claim 1 , wherein the metallic surface of the ceramic block is fed by an antenna spring contact.

6. The monopole antenna system of claim 1 , wherein the ungrounded planar radiation element is configured to resonate at multiple frequencies.

7. The monopole antenna of claim 1 , wherein the ungrounded planar radiation element is capacitively-driven by the ceramic block.

8. A method comprising:
feeding an electrical signal to a metallic surface of a ceramic block to excite an ungrounded planar radiation element, the ungrounded planar radiation element physically separated from the ceramic block and including a planar surface in a parallel plane alignment with the metallic surface of the ceramic block and further including a notch formed in a corner portion that is in overlap alignment with a portion of the ceramic block, wherein the ceramic block capacitively couples to the ungrounded planar radiation element across a dielectric spacer.

9. The method of claim 8 , wherein feeding an electrical signal to a metallic surface of a ceramic block to excite the ungrounded planar radiation element further comprises:
exciting the ungrounded planar radiation element to radiate at a first frequency; and
exciting the ungrounded planar radiation element to radiate at a second frequency.

10. The method of claim 8 , the ungrounded planar radiation element includes a notch and a portion of the ceramic block is in overlap alignment with the notch.

11. The method of claim 8 , wherein the ceramic block is in an edge-to-edge overlap alignment with the ungrounded planar radiation element.

12. The method of claim 8 , wherein the ceramic block is in a partial overlap alignment with the ungrounded planar radiation element.

13. The method of claim 8 , wherein the ceramic block is defined by a long axis and a short axis and the ceramic block is in overlap alignment with the ungrounded planar radiation element along the long axis.

14. A system comprising:
a signal feed coupled to a metallic surface of a ceramic block; and
an ungrounded planar radiation element physically separated from the ceramic block and including a notch formed in a corner portion that is in overlap alignment with a portion of the ceramic block, wherein the ceramic block capacitively couples to the ungrounded planar radiation element across a dielectric spacer.

15. The system of claim 14 , wherein the overlap alignment is a partial overlap alignment.

16. The system of claim 14 , wherein the overlap alignment is an edge-to-edge overlap alignment.

17. The system of claim 14 , wherein the ungrounded planar radiation element is configured to resonate at multiple frequencies.

Assignees

• Microsoft Technology Licensing Llc

Inventors

• Liu Luyi

Classifications

• H01Q1/2266

  disposed inside the computer · CPC title

• H01Q9/0457 Primary

  electromagnetically coupled to the feed line · CPC title

• H01Q5/378

  Combination of fed elements with parasitic elements · CPC title

• H01Q1/245

  with means for shaping the antenna pattern, e.g. in order to protect user against rf exposure · CPC title

• H01Q9/0414

  in a stacked or folded configuration · CPC title