Antenna apparatus
First Claim
1. An antenna apparatus for use with a ground plane and an antenna circuit including receiver circuitry, comprising:
- a first antenna member;
a grounding connector for connecting said first antenna member to the ground plane;
a feed connector for connecting said first antenna member to the antenna circuit;
a second antenna member;
a second grounding connector for connecting said second antenna member to the ground plane;
a second feed connector for connecting said second antenna member to the antenna circuit; and
a switch electrically interposed between said first antenna member and said second antenna member, said switch for electrically connecting said first antenna member to the receiver circuitry when said first antenna member is selected to receive, for electrically connecting said second antenna member to the receiver circuitry when said second antenna member is selected to receive, and for electrically isolating the receiver circuitry from said first and second antenna members when said first antenna member is selected to transmit.
2 Assignments
0 Petitions
Accused Products
Abstract
The invention provides for antenna apparatus having antenna members extending parallel to a ground plane, which members are L-shaped and can be provided in advantageously miniaturized form. Two such antenna members can be provided on the same ground plane so as to achieve antenna diversity and a switch mechanism is provided for switching between the antenna member in a receive mode, and for switching to only one of the antenna members for operation of the apparatus in a transmit mode. The switch mechanism is arranged to ground a feed connector of the antenna member that is not selected for transmission or reception so as to render that antenna member passive.
88 Citations
12 Claims
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1. An antenna apparatus for use with a ground plane and an antenna circuit including receiver circuitry, comprising:
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a first antenna member; a grounding connector for connecting said first antenna member to the ground plane; a feed connector for connecting said first antenna member to the antenna circuit; a second antenna member; a second grounding connector for connecting said second antenna member to the ground plane; a second feed connector for connecting said second antenna member to the antenna circuit; and a switch electrically interposed between said first antenna member and said second antenna member, said switch for electrically connecting said first antenna member to the receiver circuitry when said first antenna member is selected to receive, for electrically connecting said second antenna member to the receiver circuitry when said second antenna member is selected to receive, and for electrically isolating the receiver circuitry from said first and second antenna members when said first antenna member is selected to transmit. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An antenna apparatus for use with an antenna circuit having receiver circuitry, comprising:
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a first antenna; a second antenna; a switch for selecting between (1) a first mode wherein said first antenna is electrically connected to the receiver circuitry so as to operate in a receiving mode while said second antenna is grounded, (2) a second mode wherein said second antenna is electrically connected to the receiver circuitry so as to operate in a receiving mode while said first antenna is grounded, and (3) a third mode wherein said first and second antennas are electrically isolated from the receiver circuitry, said first antenna to operate in a transmitting mode while said second antenna is grounded. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification