摘要:
Disclosed are a forward discrete/inverse-discrete Fourier transform device and method for optical orthogonal frequency division multiplexing (OFDM) communication and a transmitting and receiving apparatus. The forward inverse-discrete Fourier transform device includes N 1:N splitters for splitting subcarrier signals received from N inputs corresponding to the number of optical frequencies of subcarriers, a phase shift delay array module for shifting phases of the split signals from the 1:N splitters, N N:1 power couplers for coupling signals output from the phase shift delay array module, a time delay array module for performing time delay on optical OFDM symbols from the N:1 power couplers, and an N:1 power coupler for coupling signals output from the time delay array module.
摘要:
Disclosed are a forward discrete/inverse-discrete Fourier transform device and method for optical orthogonal frequency division multiplexing (OFDM) communication and a transmitting and receiving apparatus. The forward inverse-discrete Fourier transform device includes N 1:N splitters for splitting subcarrier signals received from N inputs corresponding to the number of optical frequencies of subcarriers, a phase shift delay array module for shifting phases of the split signals from the 1:N splitters, N N:1 power couplers for coupling signals output from the phase shift delay array module, a time delay array module for performing time delay on optical OFDM symbols from the N:1 power couplers, and an N:1 power coupler for coupling signals output from the time delay array module.
摘要:
Disclosed are a forward discrete/inverse-discrete Fourier transform device and method for optical orthogonal frequency division multiplexing (OFDM) communication and a transmitting and receiving apparatus. The forward inverse-discrete Fourier transform device includes N 1:N splitters for splitting subcarrier signals received from N inputs corresponding to the number of optical frequencies of subcarriers, a phase shift delay array module for shifting phases of the split signals from the 1:N splitters, N N:1 power couplers for coupling signals output from the phase shift delay array module, a time delay array module for performing time delay on optical OFDM symbols from the N:1 power couplers, and an N:1 power coupler for coupling signals output from the time delay array module.
摘要:
Disclosed are a forward discrete/inverse-discrete Fourier transform device and method for optical orthogonal frequency division multiplexing (OFDM) communication and a transmitting and receiving apparatus.The forward inverse-discrete Fourier transform device includes N 1:N splitters for splitting subcarrier signals received from N inputs corresponding to the number of optical frequencies of subcarriers, a phase shift delay array module for shifting phases of the split signals from the 1:N splitters, N N:1 power couplers for coupling signals output from the phase shift delay array module, a time delay array module for performing time delay on optical OFDM symbols from the N:1 power couplers, and an N:1 power coupler for coupling signals output from the time delay array module.
摘要:
Disclosed herein are a touch panel and a method for manufacturing the same. The touch panel 100 according to preferred embodiments of the present invention includes: first electrode patterns 120 containing silver formed by selectively exposing/developing silver salt emulsion layers and formed as fine patterns on one surface of the transparent substrate 110; first wirings 160 that are integrally formed with the first electrode patterns 120; second electrode patterns 130 containing silver formed by selectively exposing/developing the silver salt emulsion layers 150 and formed on the other surface as fine patterns of the transparent substrate 110; second wirings 170 integrally formed with the second electrode patterns 130; and optical filter layers 140 that are formed between one surface of the transparent substrate 110 and the first electrode patterns 120 or between the other surface of the transparent substrate 110 and the second electrode patterns 130 to selectively block light.
摘要:
Disclosed herein are a conductive film and a method for manufacturing the same. The conductive film includes: electrode layers each formed on both surfaces of a transparent substrate by exposing/developing a silver salt emulsion layer and containing silver; and optical filter layers formed between both surfaces of the transparent substrate and the electrode layers or between one surface of the transparent substrate and the electrode layer to selectively block light. The optical filter layer is used, thereby making it possible to prevent exposure of the silver salt emulsion layers formed on both surfaces of the transparent substrate from affecting the silver salt emulsion layers formed on surfaces opposite to each other.
摘要:
A metal powder including a graphene layer irregularly formed on a surface of the metal powder, a method for preparing the same, and a multilayered ceramic capacitor including an inner electrode using the metal powder. By using the metal powder having the graphene irregularly formed on the surface thereof as the inner electrode material of the multilayered ceramic capacitor, and allowing the necking phenomenon to occur on only the surface where the graphene is not formed, the necking of the metal powder is delayed and the shrinkage of the inner electrode is controlled, so that reduction of the thickness of the inner electrode and disconnection/crack can be prevented.
摘要:
A method of recording a broadcasted programs based on ratings is disclosed. The method includes setting a watching restriction rating of the broadcasted program according to user commands, detecting rating restriction information in a broadcasted signal, associated with the broadcasted program, received when the broadcasted program is recorded, and comparing the detected rating restriction information with the set watching restriction rating, and automatically setting a password to be associated with the recording of the broadcasted program when the detected rate restriction information is higher than the set watching restriction rating.
摘要:
Disclosed herein are a touch panel and a method for manufacturing the same. A touch panel 100 according to the preferred embodiment of the present invention is configured to include: a window 110 that is a support disposed at an outermost side; a first electrode pattern 120 containing silver formed by selectively exposing/developing a silver salt emulsion layer 150 and formed on one surface of the window 110 as a fine pattern; a second pattern 130 containing silver formed by selectively exposing/developing the silver salt emulsion layer 150 and formed on the other surface of the window 110 as a fine pattern; and an optical filter layer 140 formed at least one of between one surface of the window 110 and the first electrode pattern 120 and between the other surface of the window 110 and the second electrode pattern 130 to selectively block light.
摘要:
Disclosed herein is a radiating substrate radiating heat generated from a predetermined heating element to the outside. The radiating substrate includes polymer resins and graphenes distributed in the polymer resins.