Pattern antenna
First Claim
Patent Images
1. A pattern antenna comprising:
- a first antenna pattern acting as a driven element and having an elongate pattern that is approximately in parallel with an edge of circumference of a grounding conductor portion provided on a circuit board; and
a feeding pattern that connects a feeding point provided on the circuit board to the elongate pattern;
a second antenna pattern acting as a passive element, formed in close proximity to the first antenna pattern and having an elongate pattern that is approximately in parallel with the edge of circumference of the grounding conductor portion; and
a grounding pattern that connects the grounding conductor portion to the elongate pattern;
wherein the pattern antenna is mounted on the circuit board, andwherein the elongate pattern of said first antenna pattern is closer to the grounding conductor portion than the elongate pattern of said second antenna pattern.
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Abstract
A printed circuit board has an inverted-L-shaped antenna pattern, which is provided with a conductor pattern connected to a ground pattern, so formed thereon as to be in close proximity to the outside of an inverted-F-shaped antenna pattern which is provided with a conductor pattern connected to a feeding point and with a conductor pattern connected to a ground pattern. By making resonance frequency of each of the inverted-F-shaped antenna pattern and the inverted-L-shaped antenna pattern different, it is possible to compose a frequency antenna using different frequency bands.
99 Citations
100 Claims
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1. A pattern antenna comprising:
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a first antenna pattern acting as a driven element and having an elongate pattern that is approximately in parallel with an edge of circumference of a grounding conductor portion provided on a circuit board; and
a feeding pattern that connects a feeding point provided on the circuit board to the elongate pattern;a second antenna pattern acting as a passive element, formed in close proximity to the first antenna pattern and having an elongate pattern that is approximately in parallel with the edge of circumference of the grounding conductor portion; and
a grounding pattern that connects the grounding conductor portion to the elongate pattern;wherein the pattern antenna is mounted on the circuit board, and wherein the elongate pattern of said first antenna pattern is closer to the grounding conductor portion than the elongate pattern of said second antenna pattern. - 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, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A pattern antenna comprising:
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a first antenna pattern acting as a passive element, formed as a loop-type antenna pattern and having an elongate pattern that is approximately in parallel with an edge of circumference of a grounding conductor portion provided on a circuit board; and
a pair of grounding patterns that connect the grounding conductor portion to the elongate pattern; anda second antenna pattern acting as a driven element formed as an inverted-L-shaped antenna pattern, formed in close proximity to the first antenna pattern and surrounding the first antenna pattern, and having an elongate pattern that is approximately in parallel with the edge of circumference of the grounding conductor portion and not having a connection to the grounding conductor portion; and
a feeding pattern that connects a feeding point provided on the circuit board to the elongate pattern,wherein the pattern antenna is mounted on the circuit board. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70)
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71. A pattern antenna comprising:
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a first antenna pattern antenna which is a loop-type antenna pattern, provided with an elongate pattern that is approximately in parallel with an edge of circumference of a grounding conductor portion mounted on a circuit board;
a feeding pattern that connects a feeding point provided on the circuit board to the elongate pattern; and
a grounding pattern that connects the grounding conductor portion to the elongate pattern;a second antenna pattern which is an inverted-L-shaped antenna pattern, provided with an elongate pattern that is approximately in parallel with the edge of circumference of the grounding conductor portion; and
a grounding pattern that connects the grounding conductor portion to the elongate pattern;wherein the circuit board consists of a plurality of layers including a surface of the circuit board; wherein the first antenna pattern and the second antenna pattern are formed on different layers; and wherein the first antenna pattern and the second antenna pattern are so formed as to overlap each other. - View Dependent Claims (72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100)
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Specification