MAGNETIC FIELD DATA MODEM
First Claim
1. A magnetic field modem comprising:
- an electro-magnetic radiation shielded transmitter section which modulates data and transmits the data via a modulated magnetic field through a radio frequency shield; and
a receiver section which receives the magnetic field through the radio frequency shield and demodulates the data.
1 Assignment
0 Petitions
Accused Products
Abstract
A magnetic field modem (26) includes an electro-magnetic radiation shielded (90) transmitter section (34) and a receiver section (36). The electro-magnetic radiation shielded (90) transmitter section (34) modulates data and transmits the data via a magnetic field through a radio frequency shield (20). The receiver section (34) receives the magnetic field through the radio frequency shield (20) and demodulates the data. The transmitter section includes an oscillator (40), a modulator (50), an amplifier (70), a magnetic transducer (80), and a non-ferrous magnetic shield (90). The oscillator (40) generates a carrier signal. The modulator (50) connects to the oscillator (40) and modulates the carrier signal with the data. The amplifier (70) connects to the modulator (50) and amplifies the modulated carrier signal. The magnetic transducer (80) connects to the amplifier (70) and converts the modulated carrier signal into a modulated magnetic signal. The non-ferrous magnetic shield (90) shields the magnetic transducer (80) and blocks emitted electro-magnetic radiation.
9 Citations
19 Claims
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1. A magnetic field modem comprising:
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an electro-magnetic radiation shielded transmitter section which modulates data and transmits the data via a modulated magnetic field through a radio frequency shield; and a receiver section which receives the magnetic field through the radio frequency shield and demodulates the data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for communicating data through a RF shield comprising:
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with a first modem unit on a first side of the RF shield; receiving first data, generating a magnetic field modulated with the first data, transmitting the modulated magnetic field through the RF shield; with a second modem unit on a second side of the RF shield; receiving the modulated magnetic field, demodulating the first data from the received magnetic field to recover the first data, and outputting the recovered first data. - View Dependent Claims (18, 19)
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Specification