US Patent No: 8,217,841
Number of patents in Portfolio can not be more than 2000
Frequency tunable antenna
Stats
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Jul 10, 2012
Issued date -
Jan 29, 2010
filing date -
12/696,729
serial no -
In Force
status
Importance
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Abstract
There is provided an antenna for tuning a resonant frequency. The antenna includes a first and a second arms connected to the antenna feeding portion at a common end thereof. The second arm has each of the plurality of branches including a switch for selecting a length of an electrical loop formed by the second arm and an end of a ground plane, each of the switches is connected to the ground plane. A first resonant frequency performed by the first arm is higher than a second resonant frequency by the second arm when each of the switches is open, and the first resonant frequency is lower than a third resonant frequency by the second arm when one of the switches is selected to connect the second arm and the ground plane so that the length of the electrical loop is maximum.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 2006/0181,464 DUAL-BAND ANTENNA FOR A WIRELESS LOCAL AREA NETWORK DEVICE | 5 | 2006 | |
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| 2008/0055,164 Tunable antennas for handheld devices | 3 | 2006 | |
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| 8,077,116 Antenna with active elements | 1 | 2010 | |
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| 7,372,406 Antenna apparatus including inverted-F antenna having variable resonance frequency | 9 | 2003 | |
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| 2008/0150,808 SWITCHED CAPACITIVE PATCH FOR RADIO FREQUENCY ANTENNAS | 1 | 2006 | |
Patent Citation Ranking
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