Communication system and communication apparatus
First Claim
Patent Images
1. 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 magnetic 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
a surface-wave propagation medium configured to provide a surface-wave transmission line to transmit a surface wave emanating from the electric-field-coupling antenna of the transmitter with low propagation loss,wherein the surface-wave transmission line includes a plurality of separate dielectrics or magnetic bodies.
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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 electric-field-coupling antenna configured to transmit the RF signal as an electrostatic field; a receiver including an electric-field-coupling antenna and a reception circuit unit configured to receive and process the RF signal received by the electric-field-coupling antenna; and a surface-wave propagation medium configured to provide a surface-wave transmission line to transmit a surface wave emanating from the electric-field-coupling antenna of the transmitter with low propagation loss.
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Citations
14 Claims
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1. A communication system, comprising:
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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 magnetic 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 a surface-wave propagation medium configured to provide a surface-wave transmission line to transmit a surface wave emanating from the electric-field-coupling antenna of the transmitter with low propagation loss, wherein the surface-wave transmission line includes a plurality of separate dielectrics or magnetic bodies. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A communication apparatus, comprising:
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an apparatus casing; a communication circuit unit configured to output a radio-frequency signal for transmitting data, the communication circuit unit being accommodated in the apparatus casing; a resonating section configured to allow the radio-frequency signal output from the communication circuit unit to resonate at a desired frequency, the resonating section being accommodated in the apparatus casing; a coupling electrode having a central portion connected to the resonating section, the coupling electrode being accommodated in the apparatus casing; and a surface-wave transmission line disposed in front of the coupling electrode, wherein the surface-wave transmission line captures an electromagnetic field generated in the vicinity of a front side of the coupling electrode and transmits the captured electromagnetic field as a surface wave at an interior of the surface-wave transmission line. - View Dependent Claims (11, 12)
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13. A communication system, comprising:
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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 magnetic 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 a surface-wave propagation medium configured to provide a surface-wave transmission line to transmit a surface wave emanating from the electric-field-coupling antenna of the transmitter with low propagation loss, wherein the surface-wave transmission line includes a dielectric with a dielectric constant ∈
greater than a dielectric constant ∈
0 of air, and the dielectric ∈
constant becomes greater toward an inner part of the transmission line.
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14. A communication system, comprising:
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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 magnetic 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 a surface-wave propagation medium configured to provide a surface-wave transmission line to transmit a surface wave emanating from the electric-field-coupling antenna of the transmitter with low propagation loss, wherein the surface-wave transmission line includes a magnetic body with a magnetic permeability μ
greater than a magnetic permeability μ
0 of air, and the magnetic permeability μ
becomes greater toward an inner part of the magnetic body.
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Specification