No-matching-circuit multi-band diversity antenna system for medical external communications
First Claim
1. An antenna for electrical coupling to a first drive node of a wireless communication circuit of an external medical communicator, the antenna comprising:
- a first conductive strip segment having a first length;
a second conductive strip segment having a second length different from the first length and coupled to the first conductive strip segment at a feed point to be electrically coupled to the first drive node;
a third conductive strip segment having a third length less than both the first length and the second length, wherein a first end of the third conductive strip is coupled to the feed point and a second end is coupled to a circuit ground; and
a fourth conductive strip segment for electrical coupling to a second drive node of the wireless communication circuit, wherein the fourth conductive strip segment has a fourth length less than the first length or the second length and is coupled to the third conductive strip segment at a second feed point to the second drive node; and
wherein the first conductive strip segment is configured to provide a first specified operating frequency range at or near a fundamental resonance mode corresponding to the first length plus the third length, and the second conductive strip segment is configured to provide a second, higher, specified operating frequency range at or near a fundamental resonance mode corresponding to the second length plus the third length, and the fourth conductive strip segment is configured to provide a third specified operating frequency range at or near a resonance mode of a higher order than a fundamental resonance mode corresponding to the fourth length plus the third length.
1 Assignment
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Accused Products
Abstract
An antenna for electrical coupling to a wireless communication circuit includes a first conductive strip segment having a first length, a second conductive strip segment having a second length different from the first length and coupled to the first conductive strip segment at a feed point to be electrically coupled to the drive node, and a third conductive strip segment having a third length less than both the first length and the second length. A first end of the third conductive strip is coupled to the feed point and a second end is coupled to circuit ground. The first conductive strip segment provides a first specified operating frequency range at a fundamental resonance mode corresponding to the first length plus the third length, and the second conductive strip segment provides a second specified operating frequency range at a fundamental resonance mode corresponding to the second length plus the third length.
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Citations
17 Claims
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1. An antenna for electrical coupling to a first drive node of a wireless communication circuit of an external medical communicator, the antenna comprising:
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a first conductive strip segment having a first length; a second conductive strip segment having a second length different from the first length and coupled to the first conductive strip segment at a feed point to be electrically coupled to the first drive node; a third conductive strip segment having a third length less than both the first length and the second length, wherein a first end of the third conductive strip is coupled to the feed point and a second end is coupled to a circuit ground; and a fourth conductive strip segment for electrical coupling to a second drive node of the wireless communication circuit, wherein the fourth conductive strip segment has a fourth length less than the first length or the second length and is coupled to the third conductive strip segment at a second feed point to the second drive node; and wherein the first conductive strip segment is configured to provide a first specified operating frequency range at or near a fundamental resonance mode corresponding to the first length plus the third length, and the second conductive strip segment is configured to provide a second, higher, specified operating frequency range at or near a fundamental resonance mode corresponding to the second length plus the third length, and the fourth conductive strip segment is configured to provide a third specified operating frequency range at or near a resonance mode of a higher order than a fundamental resonance mode corresponding to the fourth length plus the third length. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of forming a multi-band diversity antenna element for an external medical communicator, the method comprising:
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coupling a first end of a first conductive strip segment having a first length to a first end of a second conductive strip segment having a second length different from the first length; coupling a first end of a third conductive strip segment to the first ends of the first conductive strip segment and the second conductive strip segment, wherein the third conductive strip segment has a third length less than both the first length and the second length and is a specified fraction of the first length; coupling a fourth conductive strip segment to the first end of the third conductive strip segment, wherein the fourth conductive strip segment has a fourth length less than the first length or the second length and is configured to provide a third specified operating frequency range at or near a resonance mode of a higher order than a fundamental resonance mode corresponding to the fourth length plus the third length; and forming a connector for circuit ground at a second end of the third conductive strip segment, wherein the first conductive strip segment is configured to provide a first specified operating frequency range at or near a fundamental resonance mode corresponding to the first length plus the third length, and the second conductive strip segment is configured to provide a second, higher, specified operating frequency range at or near a fundamental resonance mode corresponding to the second length plus the third length. - View Dependent Claims (10, 11, 12, 13, 14)
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15. An electronic assembly for an external medical device, the electronic assembly including:
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a wireless transceiver; and an antenna coupled to a first drive node of the wireless transceiver, wherein the antenna includes; a first conductive strip segment having a first length;
a second conductive strip segment having a second length different from the first length and coupled to the first conductive strip segment at a feed point to be electrically coupled to the first drive node;a third conductive strip segment having a third length less than both the first length and the second length, wherein a first end of the third conductive strip segment is coupled to the feed point and a second end is coupled to a circuit ground; and a fourth conductive strip segment for electrical coupling to a second drive node of the wireless communication circuit, wherein the fourth conductive strip segment has a fourth length less than the first length or the second length and is coupled to the third conductive strip segment at a second feed point to the second drive node; and wherein the first conductive strip segment is configured to provide a first specified operating frequency range at or near a fundamental resonance mode corresponding to the first length plus the third length, and the second conductive strip segment is configured to provide a second, higher, specified operating frequency range at or near a fundamental resonance mode corresponding to the second length plus the third length, and the fourth conductive strip segment is configured to provide a third specified operating frequency range at or near a resonance mode of a higher order than a fundamental resonance mode corresponding to the fourth length plus the third length. - View Dependent Claims (16, 17)
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Specification