Mobile communication device having multiple frequency band antenna
First Claim
1. A multiple frequency band antenna, comprising:
- a substrate comprising opposite first and second surfaces;
a planar conducting layer having a substantially quadrilateral shape disposed on the first surface;
a monopole conducting layer disposed on the second surface; and
a quarter wave choke strip disposed on the second surface having one end electrically connected to the monopole conducting layer and a free end, the free end electrically coupled to the planar conducting layer disposed on the opposite surface;
wherein the antenna is configured to radiate in an upper frequency band, a middle frequency band, and a low frequency band, the monopole conducting layer is configured to radiate as a monopole in the upper frequency band, the quarter wave choke strip is configured to radiate in the middle frequency band; and
the monopole conducting layer, the quarter wave choke strip, and the planar conducting layer combined are configured to radiate as a monopole in the low frequency band.
1 Assignment
0 Petitions
Accused Products
Abstract
A mobile communication device comprises an antenna and a housing enclosing a circuit board having communication components disposed thereon to transmit and receive communication signals. The antenna includes a substrate having opposite first and second surfaces, a planar conducting layer, a quarter wave choke strip, and a monopole conducting layer. The planar conducting layer is disposed on the first surface of the substrate, while the quarter wave choke strip and the monopole conducting layer are disposed on the second surface of the substrate. The quarter wave choke strip is electrically coupled to the planar conducting layer and connected to the monopole conducting layer. The antenna may be configured to work in three frequency bands: an upper band, a middle band, and a low band. During operation, the monopole conducting layer works as a monopole radiating in the upper frequency band, the quarter wave choke strip is works in a middle frequency band, and the monopole conducting layer, the quarter wave choke strip, and the planar conducting layer combined work as a monopole radiating in the low frequency band.
62 Citations
27 Claims
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1. A multiple frequency band antenna, comprising:
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a substrate comprising opposite first and second surfaces;
a planar conducting layer having a substantially quadrilateral shape disposed on the first surface;
a monopole conducting layer disposed on the second surface; and
a quarter wave choke strip disposed on the second surface having one end electrically connected to the monopole conducting layer and a free end, the free end electrically coupled to the planar conducting layer disposed on the opposite surface;
wherein the antenna is configured to radiate in an upper frequency band, a middle frequency band, and a low frequency band, the monopole conducting layer is configured to radiate as a monopole in the upper frequency band, the quarter wave choke strip is configured to radiate in the middle frequency band; and
the monopole conducting layer, the quarter wave choke strip, and the planar conducting layer combined are configured to radiate as a monopole in the low frequency band.- View Dependent Claims (2, 3, 4, 5)
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6. A mobile communication device having antenna configured to radiate in an upper frequency band, a middle frequency band, and a low frequency band, comprising:
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a housing enclosing a circuit board having communication components disposed thereon;
a substrate comprising opposite first and second surfaces;
a planar conducting layer having a substantially quadrilateral shape disposed on the first surface;
a monopole conducting layer disposed on the second surface; and
a quarter wave choke strip disposed on the second surface having one end electrically coupled to the monopole conducting layer and a free end, the free end electrically coupled to the planar conducting layer disposed on the opposite surface. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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14. A multiple frequency band antenna configured to radiate in an upper frequency band, a middle frequency band, and a low frequency band, comprising:
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a substrate comprising opposite first and second surfaces;
a planar conducting layer having a substantially quadrilateral shape disposed on the first surface;
a quarter wave choke strip disposed on the second surface and having a free end formed within an area overlapping with the planar conducting layer, and a second end;
a first connecting device for electrically connecting the quarter wave choke strip to the planar conducting layer; and
a monopole conducting layer disposed on the second surface and connected to the second end of the quarter wave choke strip. - View Dependent Claims (15, 16, 17, 18)
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19. A multiple frequency band antenna configured to radiate in an upper frequency band, a middle frequency band, and a low frequency band, comprising:
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a substrate comprising opposite first and second surfaces;
a first planar conducting layer having a substantially quadrilateral shape disposed on the first surface;
a conducting layer strip disposed on the second surface and having a free end formed within an area overlapping with the planar conducting layer, and a second end extending from the free end in a direction towards an edge of substrate, wherein the conducting layer strip is coupled to the first planar conducting layer; and
a second planar conducting layer disposed on the second surface and connecting to the second end of the conducting layer strip. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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Specification