Abstract:
PURPOSE: A power amplifier with improved advanced linearity by combining a pre-distortion unit and a matching unit with a power amplifier by controlling secondary and third harmonic components in a high power amplifier through a CRLH(Composite Right-Left handed) matching circuit. CONSTITUTION: An input matching part(111) controls harmonic components of an input signal. A high power amplifier(120) amplifies a signal controlled by the input matching part. An output matching part(112) controls the harmonic components of an output signal which is amplified by the high power amplifier. The input matching part and the output matching part have frequency characteristics of a Notch filter. The input matching part and the output matching part have a meta electromagnetic wave structure. The input matching part and the output matching part have a CRLH structure. [Reference numerals] (111) Input matching part; (112) Output matching part; (120) High power amplifier
Abstract:
PURPOSE: A wireless energy transmission structure is provided to easily manufacture the wireless energy transmission structure by miniaturizing the wireless energy transport structure. CONSTITUTION: A wireless energy transmission structure(1) includes a ring shaped printed circuit board. The wireless energy transmission structure includes a disk section(10) comprising a first conductor plate(12), a second conductor plate(14) and a dielectric material(16) inserted between the first conductor plate and the second conductor plate. The wireless energy transmission structure includes a wire section(20). The wire section includes a transmission line(24) to surround a plurality of meta cells(22a,22b).
Abstract:
PURPOSE: A wireless energy transmission and reception apparatus is provided to improve transmission distance and efficiency by using a meta structure with a zero refractive index. CONSTITUTION: An energy transmission unit(100) is composed of a wireless transmission loop(110) and a wireless transmission meta structure(120). The wireless transmission loop is composed of a disk unit(111) and a wire unit(112) connected to both sides of the disk. The disk unit is composed of first and second conductive plates(111a,111b) and dielectric materials(111c) inserted between the first and second conductive plates. A wireless transmission meta structure is formed by repeatedly arranging a meta cell(122) on a substrate(121). A wireless energy reception unit(200) is composed of a wireless reception loop(210) and a wireless reception meta structure(220).
Abstract:
PURPOSE: The wireless energy transport apparatus and wireless energy transceiving system connect the wire including the meta material in the capacitor both ends. The intensity and energy transport efficiency of the magnetic field are multiplied. CONSTITUTION: A first wire(211) is connected to one side of the capacitor(213). The second wire(212) is connected to the other side of capacitor. The first wire and the second wire comprise the meta material. Capacitor comprises two conductive plates and dielectric. Dielectric is formed between above mentioned conductor flat boards.
Abstract:
Conventionally, a radio wave absorber for absorbing properties inevitably can utilize expensive materials and has problems such as : it is quite difficult to commercialize chemical compositions and molecular structure of the materials since they are primarily used for security techniques, and that their use in this field is quite confined. Thus, according to an embodiment of the present invention, a technique which is to minimize the effects generated from an electromagnetic wave of a terminal on a human body is disclosed by using a meta structure that has a function of absorbing the radio waves of the portable terminal to block the leakage of the electric wave. Also, the embodiment of the present invention presents a technique that connects the meta structure with a wireless power transmission system that has both an electromagnetic aggregation and a wireless power coagulation function at the same time.