Broadband switchable antenna
First Claim
1. A broadband switchable antenna comprising:
- an antenna feed;
a switch comprising a first end and a second end;
a grounded coupling arm comprising a first end and a second end, wherein the first end of the grounded coupling arm is coupled to the first end of the switch and coupled to the antenna feed, and the second end of the grounded coupling arm is directly connected to ground, and wherein current flows mainly through the grounded coupling arm and the grounded coupling arm is an L-shaped high-band arm when the switch is open; and
a main antenna arm comprising a first end and a second end, wherein the first end of the main antenna arm is directly connected to the antenna feed, the second end of the main antenna arm is not connected to the ground, wherein current flows through the main antenna arm that is a low-band arm when the switch is closed, and wherein the main antenna arm is not connected to the ground when the switch is open,wherein when the switch is closed, the grounded coupling arm is connected to the main antenna arm via the second end of the switch and the first end of the switch, and the antenna is configured to operate in a low-band mode, andwherein when the switch is open, the grounded coupling arm is disconnected from the main antenna arm, and the antenna is configured to operate in a high-band mode.
1 Assignment
0 Petitions
Accused Products
Abstract
System and method embodiments are provided for a broadband switchable antenna. The embodiments enable an easily tunable, temporally switchable antenna with good low- and high-band performance with controlled high impedance loci that easily coexists with other wireless device components. In an embodiment, a broadband switchable antenna includes an antenna feed; a high-band antenna arm comprising a first end electrically coupled to an antenna feed and a second end electrically coupled to ground; a switch coupled to the antenna feed at a position proximate to the first end of the high-band antenna arm; and a low-band antenna arm comprising a first end electrically coupled to the switch, wherein the antenna is configured to operate in a high-band mode when the switch is open and to operate in a low-band mode when the switch is closed.
-
Citations
19 Claims
-
1. A broadband switchable antenna comprising:
-
an antenna feed; a switch comprising a first end and a second end; a grounded coupling arm comprising a first end and a second end, wherein the first end of the grounded coupling arm is coupled to the first end of the switch and coupled to the antenna feed, and the second end of the grounded coupling arm is directly connected to ground, and wherein current flows mainly through the grounded coupling arm and the grounded coupling arm is an L-shaped high-band arm when the switch is open; and a main antenna arm comprising a first end and a second end, wherein the first end of the main antenna arm is directly connected to the antenna feed, the second end of the main antenna arm is not connected to the ground, wherein current flows through the main antenna arm that is a low-band arm when the switch is closed, and wherein the main antenna arm is not connected to the ground when the switch is open, wherein when the switch is closed, the grounded coupling arm is connected to the main antenna arm via the second end of the switch and the first end of the switch, and the antenna is configured to operate in a low-band mode, and wherein when the switch is open, the grounded coupling arm is disconnected from the main antenna arm, and the antenna is configured to operate in a high-band mode. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A wireless device comprising:
-
a processor; and an antenna structure coupled to the processor, wherein the antenna structure comprises; an antenna feed as a source when the antenna transmits a signal; a switch comprising a first end and a second end; a grounded coupling arm comprising a first end and a second end, wherein the first end of the grounded coupling arm is coupled to the first end of the switch and coupled to the antenna feed, and the second end of the grounded coupling arm is directly connected to ground, and wherein current flows mainly through the grounded coupling arm and the grounded coupling arm is an L-shaped high-band arm when the switch is open; and a main antenna arm comprising a first end and a second end, wherein the first end of the main antenna arm is directly connected to the antenna feed, the second end of the main antenna arm is not connected to the ground, and wherein current flows through the main antenna arm that is a low-band arm when the switch is closed, and wherein the main antenna arm is not connected to the ground when the switch is open, and wherein when the switch is closed, the grounded coupling arm is connected to the main antenna arm via the second end of the switch and the first end of the switch, and the antenna is configured to operate in a low-band mode, and wherein when the switch is open, the grounded coupling arm is disconnected from the main antenna arm, and the antenna is configured to operate in a high-band mode. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
-
-
15. An antenna comprising:
-
a single antenna feed; a main antenna arm is directly connected to the single antenna feed; multiple switches; multiple grounded coupling arms, wherein each of the multiple grounded coupling arms corresponds to one of the multiple switches and each of the multiple grounded coupling arms is an L-shaped arm, a first end of a first grounded coupling arm is coupled to a first end of a first switch, and a second end of the first grounded coupling arm is directly connected to ground, and wherein the first switch comprises an open position and a closed position, when the first switch is in the closed position, the first grounded coupling arm is connected to a section of the main antenna arm via a second end of the first switch and the first end of the first switch, wherein when the first switch is in the open position, the first grounded coupling arm is disconnected from the section of the main antenna arm, current flows through the first grounded coupling arm, the antenna is configured to operate in a high-band mode, and the first grounded coupling arm is an L-shaped high-band arm, and wherein different resonating frequencies are tunable according to the position of the first switch. - View Dependent Claims (16, 17, 18, 19)
-
Specification