Planar high-frequency or microwave antenna

• US 20060071857A1
• Filed: 01/26/2004
• Published: 04/06/2006
• Est. Priority Date: 02/04/2003
• Status: Abandoned Application

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Pelzer, Heiko
• Application Number:
  US10/543,954
• Publication Number:
  US 20060071857A1
• Time in Patent Office: Days
• US Class Current: 343/700.MS
• CPC Class Codes: H01Q 1/244 extendable from a housing along a given path
• CPC Class Codes: H01Q 19/005 Patch antenna using one or more coplanar parasitic elements
• CPC Class Codes: H01Q 21/30 Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
• CPC Class Codes: H01Q 5/378 Combination of fed elements with parasitic elements
• CPC Class Codes: H01Q 5/385 Two or more parasitic elements
• CPC Class Codes: H01Q 9/0421 with a shorting wall or a shorting pin at one end of the element H01Q9/0414 takes precedence

Abstract

A miniaturized planar multi-band antenna for HF or microwave frequencies (PIFA) is disclosed, which operates by means of a metal surface (4) defining a ground potential of the application. The operating principle is based on at least two structures (11, 21) which are essentially independent of one another and emit in wide ranges in different frequency ranges, disposed on one or more dielectric substrate(s) (1, 2), which are connected both to the ground potential of the application and to the high-frequency feeder. Other conductive structures (6) which can be resonantly or capacitively coupled enable extra frequency bands to be added. The special design of the metallized structures (11, 21) therefore enables a higher output capacity (bandwidth) than a conventional PIFA or the same output capacity for a smaller size.

Claims

1. Planar multi-band antenna with at least a first and a second metallized structure (11, 21), each of which can be resonantly energized, spaced apart in such a way that they operate substantially free of interaction.

2. Antenna as claimed in claim 1,

in which at least one of the metallized structures (11, 21) is disposed above a metal surface (4) constituting a ground potential.

3. Antenna as claimed in claim 2,

in which the metallized structures (11, 21) are disposed adjacent to one another on a common base (3).

4. Antenna as claimed in claim 1,

in which at least one of the metallized structures (11, 21) is mounted on a substrate (1, 2).

5. Antenna as claimed in claim 4,

in which the substrate (1, 2) has a dielectric constant of □

_r>

1 and/or an electric constant of μ

_r>

1.

6. Antenna as claimed in claim 1,

in which at least one of the metallized structures (11, 21) is connected to a ground potential via a first terminal (41).

7. Antenna as claimed in claim 1,

in which at least one of the metallized structures (11, 21) is provided with a second terminal (12) in order to feed the antenna with electromagnetic energy to be radiated or for uncoupling received electromagnetic energy.

8. Antenna as claimed in claim 1,

with at least one line element (6) for generating at least one other resonance frequency.

9. Antenna as claimed in claim 8,

in which the line element (6) is resonantly or capacitively coupled with the ground potential or a high-frequency line or is free.

10. Telecommunication device with an antenna as claimed in claim 1.