Speaker voice coil antenna
First Claim
1. An antenna, comprising:
- a speaker having a voice coil; and
an antenna feed coupled to the voice coil for at least radiating or receiving an electromagnetic signal.
1 Assignment
0 Petitions
Accused Products
Abstract
A wireless communication device (50) can include a radio frequency transceiver (52), an audio drive circuit (58) coupled to the transceiver, a speaker (10) having a voice coil (16) coupled to the audio drive circuit, and an antenna feed or radiating circuit (20) such as an RFID or NFID circuit coupled to the voice coil for at least radiating or receiving an electromagnetic signal via the voice coil. Such radiating circuits can be coupled to the voice coil using a band pass circuit designed to substantially prevent a radiating signal from the radiating circuit from interfering with audio drive circuit driving the speaker. The wireless communication device can further include an antenna (54) coupled to the radio frequency transceiver. Note, this arrangement can be designed to avoid problems involving electrostatic discharge sensitivity, electromagnetic interference coupling between the antenna and the voice coil, total radiated power, and specific absorption rate.
45 Citations
20 Claims
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1. An antenna, comprising:
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a speaker having a voice coil; and
an antenna feed coupled to the voice coil for at least radiating or receiving an electromagnetic signal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A wireless communication device, comprising:
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a radio frequency transceiver;
an audio drive circuit coupled to the transceiver;
a speaker having a voice coil coupled to the audio drive circuit; and
an antenna feed coupled to the voice coil for at least radiating or receiving an electromagnetic signal via the voice coil. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A cellular phone having near field identification or radio frequency identification capability, comprising:
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a radio frequency transceiver for cellular communications;
an antenna coupled to the radio frequency transceiver;
an audio drive circuit coupled to the transceiver;
a speaker having a voice coil coupled to the audio drive circuit, wherein the voice coil radiates or receives electromagnetic signals for near field identification or radio frequency identification signaling. - View Dependent Claims (18, 19, 20)
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Specification