| Patent application number | Description | Published |
|---|
| 20090303007 | MULTIPLE BAND RFID READER DEVICE - There is disclosed a multi-band RFID reader, including a duplexer for separating a data signal received from a tag according to a frequency band, a directional coupler for diverging a part of the signal separated through the duplexer, a Digital Signal Processor (DSP) for determining a frequency band of the diverged signal and generating a control signal based on the determination result, and Radio Frequency (RF) switch for turning on/off transmission/reception modes in response to the control signal of the DSP. The multi-band RFID reader can read signals received from various kinds of tags by employing a multi-frequency band irrespective of frequency bands. | 12-10-2009 |
| 20100026416 | POWER DIVIDER AND POWER COMBINER USING DUAL BAND-COMPOSITE RIGHT/LEFT HANDED TRANSMISSION LINE - The present invention relates to a power divider and a power combiner employing dual band-Composite Right/Left-Handed (CRLH) transmission lines. A power divider including an input terminal and two output terminals according to the present invention includes two transmission lines each having two terminals connected to the input terminal and the output terminals, respectively, and two short-stubs having one terminals connected to the output terminals, respectively, and the other terminals connected to grounds. The transmission line may employ a first dual band-CRLH transmission line having a double value of a termination impedance, which is substantially connected to the output terminal, as a characteristic impedance, and the short-stub may employ a second dual band-CRLH transmission line, which has substantially the same value as that of the termination impedance as a characteristic impedance. The first dual band-CRLH transmission line and the second dual band-CRLH transmission line generate phase delay of 90 degrees in a high frequency band and phase delay of −90 degrees in a low frequency band with respect to an input signal. | 02-04-2010 |
| 20100073112 | RADIO FREQUENCY SWITCH AND APPARATUS CONTAINING THE RADIO FREQUENCY SWITCH - The present invention relates to A radio frequency (RF) switch and an apparatus including the RF switch. In an aspect of the present invention, an RF switch includes a transmission line having one end connected to an input terminal or an output terminal and the other end connected to a signal line and configured to transfer an RF signal, and a diode disposed between the input terminal and the transmission line or between the output terminal and the transmission line, the diode being configured to control whether or not to transmit the RF signal. In another aspect, an RF switch includes a transmission line having one end connected to an input terminal and the other end connected to an output terminal, and a diode disposed between the input terminal and the transmission line or between the output terminal and the transmission line, the diode being configured to control whether or not to transmit the RF signal. Here, a CRLH (Composite Right/Left-Handed) transmission line is employed as the transmission line. | 03-25-2010 |
| 20150263774 | METHOD OF PROVIDING ANTENNA BY USING COMPONENT IN ELECTRONIC DEVICE AND THE ELECTRONIC DEVICE THEREFOR - An electronic device is provided. The electronic device includes a control signal generation unit configured to generate a control signal corresponding to a user input, a signal transmission unit configured to transmit the generated control signal to a signal processing unit, the signal processing unit configured to process the transmitted control signal, and a ground connection unit configured to connect a ground plate of the signal transmission unit and a ground plate of the signal processing unit, wherein the ground plate of the signal transmission unit and the ground plate of the signal processing unit are spaced from each other and the ground plate of the signal transmission unit is used as a radiator. | 09-17-2015 |
| 20160056535 | MULTIBAND ANTENNA - A multiband antenna is provided. The multiband antenna includes a feeding unit, a first radiator including a first path, a second radiator including a second path sharing at least a portion of the first path, a current dispersion path extending to a ground from one end of the first path, and a switch configured to open and short-circuit the current dispersion path. | 02-25-2016 |
| 20160064832 | MULTI-BAND LOOP ANTENNA AND ELECTRONIC DEVICE UTILIZING THE SAME - A multi-band loop antenna is provided. The antenna includes a loop radiator that operates in a low frequency band, and at least two loop radiators that operate in a high frequency band and are inserted into an inner area of the low frequency band loop radiator. Each of the radiators independently operates according to an operating frequency band, to provide a multi-band characteristic. | 03-03-2016 |
| 20160111797 | ANTENNA DEVICE AND ELECTRONIC DEVICE INCLUDING THE SAME - An antenna device and an electronic device including the same are provided. The antenna device includes a first radiator in which a slot is formed, a second radiator, at least a portion of which is disposed in the slot, and a feeder configured to feed the same electricity to the first radiator and the second radiator. The antenna device may have many resonance frequencies in the same installation space, allowing efficient use of the internal space of the electronic device. Moreover, the antenna device and the electronic device including the same may be implemented variously according to various embodiments. | 04-21-2016 |
| 20160118710 | ANTENNA USING COUPLING AND ELECTRONIC DEVICE INCLUDING THE SAME - An electronic device is provided. The electronic device includes a housing including a segment part used to insulate a portion of the housing and an antenna disposed at a position corresponding to the segment part. | 04-28-2016 |
