摘要:
An apparatus and method for automatically matching a frequency of an antenna in a wireless terminal are provided. The apparatus includes a duplexer for classifying frequencies transmitted/received through the antenna of the wireless terminal, transmitting the reception frequency received in the antenna to an automatic matching module, and transmitting a transmission frequency, which is received from the automatic matching module, to the antenna; the automatic matching module for automatically matching impedance for the reception frequency received from the duplexer, transmitting the impedance-matched reception frequency to an amplifier, automatically matching impedance for the transmission frequency received from the amplifier, and transmitting the impedance-matched transmission frequency to the duplexer; and a controller for controlling the automatic matching module to automatically match the impedance for the transmission/reception frequencies.
摘要:
An apparatus and method for automatically matching an impedance for a frequency of an antenna in a wireless terminal. The apparatus automatically matches an impedance for a frequency of an antenna in a wireless terminal. The apparatus includes a duplexer for classifying frequencies transmitted/received through the antenna of the wireless terminal, an automatic matching module for transmitting the reception frequency, which is received from the duplexer, to an amplifier after automatically matching impedance for the reception frequency and for transmitting the transmission frequency, which is received from the amplifier, to the duplexer after automatically matching impedance for the transmission frequency, and a controller for controlling the automatic matching module to automatically match impedance for the transmission/reception frequency.
摘要:
A method and device for receiving a digital multimedia broadcasting (DMB) signal in a wireless terminal where an external antenna is detachable from the wireless terminal, an internal antenna is embedded in the wireless terminal, a switch connects one of the external antenna and the internal antenna to a DMB receiver. The DMB receiver receives a DMB signal through one of the external antenna and the internal antenna. A controller controls the switch to connect the internal antenna and transmit the DMB signal to the DMB receiver when the external antenna is detached from the wireless terminal and controls the switch to connect the external antenna to the DMB receiver and transmit the DMB signal to the DMB receiver, when the external antenna is attached to the wireless terminal.
摘要:
Disclosed is a metal pattern composition including a conductive metal or a conductive metal precursor compound, and a carboxylic acid-amine base ion pair salt.
摘要:
Disclosed is a metal pattern composition including a conductive metal or a conductive metal precursor compound, and a carboxylic acid-amine base ion pair salt.
摘要:
Disclosed are a device and a method for receiving a Digital Multimedia Broadcasting (DMB) signal in a wireless terminal, which can receive a DMB signal corresponding to each channel. The apparatus includes an automatic matching unit resonating at a frequency band corresponding to a selected channel; a DMB reception unit outputting a DMB signal corresponding to the selected channel, which is received through the resonated frequency band using the automatic matching unit; and a control unit controlling the automatic matching unit to resonate at the frequency band corresponding to the selected channel and the DMB reception unit to output the DMB signal corresponding to the selected channel, which is received through the resonated frequency band. Further, the method includes: resonating at a frequency band corresponding to a selected channel if the channel is selected in a DMB mode of a wireless terminal; and outputting a DMB signal corresponding to the selected channel, which is received through the resonated frequency band.
摘要:
A built-in antenna apparatus for a mobile terminal is provided. The built-in antenna apparatus includes a first planar antenna having a first feeding point for providing a first radiation pattern, a second planar antenna having a second feeding point for providing a second radiation pattern, the second planar antenna being located adjacent to the first planar antenna, and a ground stub having a ground point for providing a ground pattern, the ground stub placed a distance apart from the first and the second planar antennas.
摘要:
An antenna device for a portable terminal. The antenna device includes a carrier mounted in a housing of the portable terminal, at least one support extending from the carrier, a main radiator attached onto the carrier and an auxiliary radiator extending from the main radiator and fixed to ends of the supports while being spaced apart from the carrier. Since the antenna device includes the supports extending from the carrier to support the auxiliary radiator extending from the main radiator, the auxiliary radiator can be spaced apart from the carrier and the inner side of the housing of the portable terminal when the antenna device is mounted in the portable terminal. Thus, by reducing interference from a user's body or structures in the housing of the portable terminal, stable radiation performance can be secured. Moreover, the shape of the carrier can be easily changed suitably for a slim portable terminal by supporting the auxiliary support using the supports, whereby the antenna device can be easily installed in a small mounting space in a compact and slim portable terminal and an effective area of the antenna device can be minimized and an antenna gain can be improved in the same size space.
摘要:
Disclosed are a beamformer and a beamforming method. The beamformer includes a plurality of dividers, each of which divides an input signal along a plurality of paths, an input switch which selects one of the dividers such that the input signal is input to the selected divider, a phase shifter which shifts phases of respective output signals from the divider, and an output switch which transmits the output signals from the phase shifter to an antenna.