Multiband antenna having reverse-fed PIFA
First Claim
Patent Images
1. A multiband antenna comprising:
- a planar inverted F-antenna (PIFA) having a first resonant frequency; and
a reverse-fed PIFA (RFPIFA) having a second resonant frequency lower than the first resonant frequency, the RFPIFA surrounding the PIFA on at least two sides of the PIFA.
3 Assignments
0 Petitions
Accused Products
Abstract
A multiband antenna includes a 5-6 GHz PIFA surrounded on two or three sides by a 2.4 GHz RFPIFA. The PIFA and RFPIFA are tunable by removing fingers from the PIFA and either removing portions of or creating at least one area in the RFPIFA where inductance may be added. The RFPIFA contains an inductive meanderline. An out-of-plane matching stub is provided between the feed and the ground plane to impedance match the antenna. The PIFA/RFPIFA is supported by a plastic mesa tabletop whose legs are mounted directly to the ground plane of a PCB at the corner of the PCB. Electronic components on the PCB can be mounted underneath the multiband antenna.
-
Citations
65 Claims
-
1. A multiband antenna comprising:
-
a planar inverted F-antenna (PIFA) having a first resonant frequency; and
a reverse-fed PIFA (RFPIFA) having a second resonant frequency lower than the first resonant frequency, the RFPIFA surrounding the PIFA on at least two sides of the PIFA. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
-
-
23. A multiband antenna comprising:
-
a planar inverted F-antenna (PIFA) having a first resonant frequency; and
a reverse-fed PIFA (RFPIFA) having a second resonant frequency lower than the first resonant frequency, the RFPIFA surrounding the PIFA substantially on three sides of the PIFA. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
-
-
44. A multiband antenna comprising:
-
a planar inverted F-antenna (PIFA) having a first resonant frequency; and
a reverse-fed PIFA (RFPIFA) having a second resonant frequency lower than the first resonant frequency, the RFPIFA surrounding the PIFA substantially on three sides of the PIFA, the PIFA and the RFPIFA each having a first set of adjustment portions that are removable and the RFPIFA having a second set of adjustment portions that form narrow inductive transmission lines. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62)
-
-
63. A multiband antenna comprising:
-
a planar inverted F-antenna (PIFA) having a first resonant frequency; and
a reverse-fed PIFA (RFPIFA) having a second resonant frequency lower than the first resonant frequency, the PIFA and RFPIFA integrally formed from a single piece of conductive material and attached at one end such that dimensions of the multiband antenna are defined substantially by the RFPIFA.
-
-
64. A method for multiband reception of an antenna comprising:
-
communicating in a first resonant frequency via a planar inverted F-antenna (PIFA);
communicating in a second resonant frequency lower than the first resonant frequency via a reverse-fed PIFA (RFPIFA); and
limiting an area of the PIFA and RFPIFA such that dimensions of the antenna are defined substantially by the RFPIFA.
-
-
65. A method for multiband reception of an antenna comprising:
-
communicating in a first resonant frequency via a planar inverted F-antenna (PIFA);
communicating in a second resonant frequency lower than the first resonant frequency via a reverse-fed PIFA (RFPIFA); and
adjusting one of the first and second frequencies by one of removing a portion of the one of PIFA and the RFPIFA and changing inductance at a discrete location that include one of in the RFPIFA and between the PIFA and RFPIFA.
-
Specification