Abstract: Disclosed is an SAR measurement method that is capable of securing sufficient power within a short period of time and always maintaining the intensity of measurement signals irrespective of the measurement frequency. With the SAR measurement method, a plurality of measurement modules each with a control unit for processing location information and SAR measurement values, a memory unit for storing data, an antenna for making signal transception with the external, and a storage battery charged by way of inductive power are prepared. Thereafter, the plurality of measurement modules are arranged and installed within a phantom formed with a homogeneous material that conforms to the electrical characteristics of human body tissue. An electronic product to be measured in SAR is mounted at a predetermined location of the phantom with a predetermined posture. A high frequency of several hundred megahertz (MHz) to several hundred gigahertz (GHz) is scanned toward the phantom.

Abstract: Disclosed is a method of measuring the radiation characteristic of an antenna, where sufficient power is secured within a short period of time and supplied in a stable manner so as to always keep the intensity of measurement signals high irrespective of the measurement frequency. With the antenna radiation measurement method, upon receipt of measurement frequency signals, location information and measured values are processed to transmit measurement signals, and a charging high frequency of several hundred megahertz (MHz) to several hundred gigahertz (GHz) is scanned toward a tester body such that inductive power is generated to allow the self-charging. The measurement frequency signals are transmitted toward the tester body through a source antenna, and the measured signals transmitted from the measurement antennas of the respective measurement modules are received and data-processed at a measurement controller.

Abstract: Disclosed is an SAR measurement method that is capable of securing sufficient power within a short period of time and always maintaining the intensity of measurement signals irrespective of the measurement frequency. With the SAR measurement method, a plurality of measurement modules each with a control unit for processing location information and SAR measurement values, a memory unit for storing data, an antenna for making signal transception with the external, and a storage battery charged by way of inductive power are prepared. Thereafter, the plurality of measurement modules are arranged and installed within a phantom formed with a homogeneous material that conforms to the electrical characteristics of human body tissue. An electronic product to be measured in SAR is mounted at a predetermined location of the phantom with a predetermined posture. A high frequency of several hundred megahertz (MHz) to several hundred gigahertz (GHz) is scanned toward the phantom.

Abstract: Disclosed is a method of measuring the radiation characteristic of an antenna, where sufficient power is secured within a short period of time and supplied in a stable manner so as to always keep the intensity of measurement signals high irrespective of the measurement frequency. With the antenna radiation measurement method, upon receipt of measurement frequency signals, location information and measured values are processed to transmit measurement signals, and a charging high frequency of several hundred megahertz (MHz) to several hundred gigahertz (GHz) is scanned toward a tester body such that inductive power is generated to allow the self-charging. The measurement frequency signals are transmitted toward the tester body through a source antenna, and the measured signals transmitted from the measurement antennas of the respective measurement modules are received and data-processed at a measurement controller.

Abstract: An antenna measurement system is provided to measure the radiation characteristic of a source antenna (2), and obtain more correct far-field range data within a short period of time. The antenna measurement system includes a tester body placed apart from the source antenna (2) with a predetermined distance. A plurality of measurement modules (20) are arranged at the tester body in a predetermined pattern. Each measurement module has an IC chip (22) for processing positional information and measured values to generate relevant signals, and a tester antenna for receiving and transmitting the signals from the IC chip (22). Upon receipt of frequency signals from the source antenna (2), the tester antenna (24) generates induced power for driving the IC chip (22), and transmits the measured values for the frequency signals to the IC chip (22).

Abstract: An antenna measurement system is provided to measure the radiation characteristic of a source antenna (2), and obtain more correct far-field range data within a short period of time. The antenna measurement system includes a tester body placed apart from the source antenna (2) with a predetermined distance. A plurality of measurement modules (20) are arranged at the tester body in a predetermined pattern. Each measurement module has an IC chip (22) for processing positional information and measured values to generate relevant signals, and a tester antenna for receiving and transmitting the signals from the IC chip (22). Upon receipt of frequency signals from the source antenna (2), the tester antenna (24) generates induced power for driving the IC chip (22), and transmits the measured values for the frequency signals to the IC chip (22).

Abstract: Disclosed is a wireless telecommunication terminal constructed with a housing in which a transmitter/receiver module is received; an earpiece is disposed at the upper portion of the front face of the housing; a liquid crystal display is disposed below the earpiece; a keypad having a plurality of keys and functional buttons is disposed below the liquid crystal display; a cover is rotatably hinge-coupled to the housing; and an antenna established either on the surface of the cover or inside of the cover. The antenna is preferably constructed as either a plane monopole antenna, a plane dipole antenna, a slot antenna, a reverse F antenna, a reverse L antenna, or a micro-strip antenna.

Abstract: A V type aperture coupled circular polarization patch antenna constructed with a microstrip line formed on a rear face of a dielectric substance, a ground surface formed on an entire face of the dielectric substance, a V type aperture formed at a desired angle on the basis of a portion of the ground surface, which overlaps with the microstrip line, and a patch formed into a rectangular shape and mounted at an upper portion of the aperture so as to cover the aperture. At 1.9375 GHz, which is one of center frequencies of IMT-2000, the reflection loss is −11.34 dB, the band width at minus 10 dB is 15.2% (295 MHz), the beam width is 60°, and a proper circular polarization may be obtained.