Communication System, Communication Apparatus, and Electric-Field-Coupling Antenna
AssigneeSony Corporation
InventorTakanori WASHIRO
Life of this patent
Estimating the term…
Abstract
A communication system includes the following elements: a transmitter including a transmission circuit unit configured to generate an RF signal for transmitting data and an EFC antenna configured to transmit the RF signal as an electrostatic field or an induced electric field; a receiver including an EFC antenna and a reception circuit unit configured to receive and process the RF signal received by the EFC antenna; and an impedance snatching unit configured to make an impedance of the EFC antenna of the transmitter equal to an impedance of the EFC antenna of the receiver. The RF signal is transmitted by electric-field coupling between the EFC antennas, facing each other, of the transmitter and the receiver.
Claims23
A communication system comprising;
- a transmitter including a transmission circuit unit configured to generate a radio-frequency signal for transmitting data and an electric-field-coupling antenna configured to transmit the radio-frequency signal as an electrostatic field or an induced electric field;
- a receiver including an electric-field-coupling antenna and a reception circuit unit configured to receive and process the radio-frequency signal received by the electric-field-coupling antenna;
- and
- an impedance matching unit configured to make an impedance of the electric-field-coupling antenna of the transmitter equal to an impedance of the electric-field-coupling antenna of the receiver,
- wherein the radio-frequency signal is transmitted by electric-field coupling between the electric-field-coupling antennas, facing each other, of the transmitter and the receiver.
A communication apparatus comprising:
- a communication circuit unit configured to process a radio-frequency signal for transmitting data;
- and
- an electric-field-coupling antenna configured to establish electric-field coupling to a communication partner facing the communication apparatus at a very short distance,
- wherein the electric-field-coupling antenna has an impedance matched to that of the communication partner with which electric-field coupling is established, the communication partner being disposed at the very short distance,
An electric-field-coupling antenna used in communicating a radio-frequency signal using electric-field coupling, comprising:
- an electrode;
- a series inductor;
- and
- a parallel inductor,
- wherein the electrode, the series inductor, and the parallel inductor are connected to a radio-frequency-signal transmission line, and
- wherein the electric-field-coupling antenna has an impedance matched to that of a communication partner with which electric-field coupling is established, the communication partner being disposed at a very short distance.
Dependencies are inferred from the claim text.