APPARATUS FOR ENABLING TWO ELEMENTS TO SHARE A COMMON FEED
2 Assignments
0 Petitions
Accused Products
Abstract
An apparatus including a first antenna element operable at least one frequency within a first frequency range; a second antenna element operable at least one frequency within a second frequency range; radio frequency circuitry electrically connected to the first antenna element via a first electrical path and electrically connected to the second antenna element via a second electrical path, wherein the first and second electrical paths are common where they connect to the radio frequency circuitry; a first frequency-dependent filter arrangement, within the first electrical path, arranged to accept frequencies within the first frequency range and reject frequencies within the second frequency range; a first impedance level transformation arrangement, having a first tapped inductor, within the first electrical path; and a second frequency-dependent filter arrangement, within the second electrical path, arranged to accept frequencies within the second frequency range and reject frequencies within the first frequency range.
22 Citations
36 Claims
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I_We. I/We claim:
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1. An apparatus comprising:
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a first antenna element operable at least one frequency within a first frequency range; a second antenna element operable at least one frequency within a second frequency range; radio frequency circuitry electrically connected to the first antenna element via a first electrical path and electrically connected to the second antenna element via a second electrical path, wherein the first and second electrical paths are common where they connect to the radio frequency circuitry; a first frequency-dependent filter arrangement, within the first electrical path, arranged to accept frequencies within the first frequency range and reject frequencies within the second frequency range; a first impedance level transformation arrangement, having a first tapped inductor, within the first electrical path; and a second frequency-dependent filter arrangement, within the second electrical path, arranged to accept frequencies within the second frequency range and reject frequencies within the first frequency range. - View Dependent Claims (2, 3, 4, 5, 7, 8, 15)
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6. (canceled)
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9. (canceled)
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10. (canceled)
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11. (canceled)
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12. (canceled)
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13. An apparatus comprising:
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a first element; a second element; circuitry electrically connected to the first element via a first electrical path and electrically connected to the second element via a second electrical path, wherein the first and second electrical paths are common where they connect to the circuitry; a first frequency-dependent filter arrangement, within the first electrical path, arranged to accept frequencies within a first frequency range and reject frequencies within a second frequency range; a first impedance level transformation arrangement, having a first tapped inductor, within the first electrical path; and a second frequency-dependent filter arrangement, within the second electrical path, arranged to accept frequencies within the second frequency range and reject frequencies within the first frequency range. - View Dependent Claims (36)
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14. (canceled)
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16. An apparatus comprising:
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a first part for electrical connection to an antenna element; a second part for electrical connection to radio frequency circuitry; a tapped parallel resonant arrangement connected to the first part; and a frequency-dependent filter arrangement connected to the second part. - View Dependent Claims (17, 19, 21, 22, 26, 28, 30, 32, 35)
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18. (canceled)
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20. (canceled)
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23. (canceled)
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24. (canceled)
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25. (canceled)
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27. (canceled)
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29. (canceled)
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31. (canceled)
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33. (canceled)
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34. (canceled)
Specification