摘要:
A method for measuring electromagnetic radiation pattern and gain of radiator using TEM waveguide is disclosed. The method includes the steps of: a) measuring powers of output port of a transverse electric and magnetic (TEM) waveguide by changing arrangements of the radiator located within the TEM waveguide; and b) estimating a radiation power density of the radiator in free space, wherein the radiator is modeled as a dipole moment based on the powers of the output port of the TEM waveguide.
摘要:
A method for measuring electromagnetic radiation pattern and gain of radiator using TEM waveguide is disclosed. The method includes the steps of: a) measuring powers of output port of a transverse electric and magnetic (TEM) waveguide by changing arrangements of the radiator located within the TEM waveguide; and b) estimating a radiation power density of the radiator in free space, wherein the radiator is modeled as a dipole moment based on the powers of the output port of the TEM waveguide.
摘要:
A method of reducing electromagnetic field using metamaterial and a terminal having a structure for reducing an electromagnetic field using a metamaterial are provided. The method includes the steps of: deciding a body contacting part of a portable terminal or a wearable terminal; and disposing an electromagnetic field absorption member formed of metamaterial between an antenna and the decided body contacting part.
摘要:
A method of reducing electromagnetic field using metamaterial and a portable or wearable terminal having a structure for reducing an electromagnetic field using a metamaterial are provided. The method includes deciding a body contacting part of the portable or wearable terminal; and disposing an electromagnetic field reducing unit formed of metamaterial between an antenna and the decided body contacting part, wherein the metamaterial including a conductor and a dielectric adjusts a permittivity.
摘要:
A method for measuring radiated emission using a GTEM cell is disclosed in which a DUT is placed inside the GTEM cell, and its power is measured by a power receiver. The direction of the DUT is changed, and then its transmission power is measured. Here, the arrangements of the DUT are fifteen, and their power measurement number is 15. These powers measured are transmitted to a computer system through a GPIB cable, in which the powers are accepted in the form of data in order to calculate emission in OATS. Accordingly, the maximum vertical/horizontal electric field emitted from the DUT in OATS is estimated over the whole band of radiated emission test. This enables a desired emission value to be measured for a short time only utilizing the GTEM cell.