Patent application number | Description | Published |
20150118976 | RADIO FREQUENCY SWITCHING CIRCUIT WITH ADVANCED ISOLATION CHARACTERISTICS - A radio frequency switching circuit may include a first switching circuit unit including first to n | 04-30-2015 |
20150133065 | RF SWITCH - A RF switch may include: a common port coupled to an antenna to transmit and receive first and second high frequency signals; a transmitting switching unit coupled between a transmitting port transferring the first high frequency signal and the common port and including a plurality of switching devices coupled to each other in series; and a receiving switching unit coupled between a receiving port transferring the second high frequency signal and the common port and including a first switching unit including a first switching device. The first switching unit may further include a second switching device having a first terminal coupled to a first terminal of the first switching device and a second terminal coupled to a control terminal of the first switching device. | 05-14-2015 |
20150180465 | RF SWITCH - A radio frequency (RF) switch may include: a common port; a first switching unit; and a second switching unit. The first switching unit further includes a third switching device having one end coupled to a body of one of the plurality of first switching devices and the other end coupled to a first ground terminal, and the second switching unit further includes a fourth switching device having one end coupled to a body of one of the plurality of second switching devices and the other end coupled to a second ground terminal. | 06-25-2015 |
20150214931 | RADIO FREQUENCY SWITCHING CIRCUIT AND ELECTRONIC DEVICE - A radio frequency (RF) switching circuit may include: a first switching circuit unit connected between a first signal port for signal transmission and reception and a common connection node connected to an antenna port and operated according to a first gate signal; a second switching circuit unit connected between a second signal port for signal transmission and reception and the common connection node and operated according to a second gate signal; a negative voltage generating unit generating a negative voltage using a voltage of an RF signal from the common connection node; and a gate signal generating unit generating the first and second gate signals using the negative voltage from the negative voltage generating unit and an operating voltage. | 07-30-2015 |
20150256147 | RADIO FREQUENCY SWITCH - A radio frequency switch may include a common port transmitting and receiving a radio frequency signal, a first switching unit including a plurality of first switch elements connected in series and opening or closing a signal transfer path between a first port inputting and outputting the radio frequency signal and the common port, and a second switching unit having a plurality of second switch elements connected in series and opening or closing a signal transfer path between a second port inputting and outputting the radio frequency signal and the common port. The second switching unit further includes a first filter circuit unit connected to a control terminal of at least one second switch element among the plurality of second switch elements to remove at least one preset frequency band signal. | 09-10-2015 |
20150326268 | RADIO FREQUENCY SWITCH - A radio frequency switch may include: a common port transmitting and receiving a radio frequency signal; a receive switch unit including a first switch unit having a plurality of first switch elements and a second switch unit having a plurality of second switch elements; and a transmit switch unit including a third switch unit having a plurality of third switch elements and a fourth switch unit having a plurality of fourth switch elements. The receive switch unit may further include a plurality of first capacitors connected between a first terminal and a body terminal of each of the plurality of first switch elements. The transmit switch unit may further include a plurality of second capacitors connected between a second terminal and a body terminal of each of the plurality of third switch elements. | 11-12-2015 |
20160049931 | RADIO FREQUENCY SWITCH CIRCUIT - A radio frequency switch circuit may include: a first switch circuit unit connected between a first signal port for transmitting and receiving a signal and a common connection node and operated by a first gate signal; a second switch circuit unit connected between a second signal port for transmitting and receiving a signal and the common connection node and operated by a second gate signal; a first shunt circuit unit including first and second shunt units connected to each other in series between a first connection node connected to the first signal port and a ground, the first shunt unit being operated by the first gate signal and the second shunt unit being operated by the second gate signal; and a second shunt circuit unit connected between a second connection node connected to the second signal port and the ground and operated by the first gate signal. | 02-18-2016 |
20160062376 | LOW-DROP-OUTPUT TYPE VOLTAGE REGULATOR AND RF SWITCHING CONTROL DEVICE HAVING THE SAME - A low-drop-output type voltage regulator may include an error amplifier providing a gate signal depending on a voltage difference between a reference voltage and a feedback voltage, a semiconductor switch adjusting a current between an input terminal receiving a battery voltage and a ground, in response to the gate signal, a feedback circuit dividing and detecting a detection voltage in a detection node between the semiconductor switch and the ground and providing the feedback voltage, a voltage sensor sensing the battery voltage, and a feedback voltage controller adjusting a level of the feedback voltage depending on the sensed battery voltage. | 03-03-2016 |
20160079843 | VOLTAGE DROPPING APPARATUS, VOLTAGE SWITCHING APPARATUS, AND INTERNAL VOLTAGE SUPPLY APPARATUS USING THE SAME - A voltage dropping apparatus may include: a voltage dropping unit receiving an input voltage, outputting the input voltage in a first mode, and dropping a level of the input voltage in a second mode; a voltage output unit connected to the voltage dropping unit, receiving and outputting the input voltage in the first mode, and receiving and outputting the dropped voltage in the second mode; and a control unit receiving a mode signal and controlling a mode change of the voltage dropping unit and the voltage output unit based on a value of the mode signal. | 03-17-2016 |