摘要:
An RF power amplifier includes an RF choke coil, a power amplification circuit unit, and an electrostatic discharge (ESD) protection unit. The RF choke coil is connected to a voltage terminal through which an operating voltage is applied. The RF choke coil supplies the operating voltage and interrupts an RF signal. The power amplification circuit unit is supplied with the operating voltage through the RF choke coil. The power amplification circuit unit amplifies an input signal inputted through an input terminal and outputs the amplified input signal through an output terminal. The ESD protection unit is connected between a first connection node and a ground. The ESD protection unit bypasses an ESD voltage from the first connection node to the ground, the first connection node being a node between the voltage terminal and the RF choke coil.
摘要:
There are provided a dual mode communications device and a method of improving a data rate thereof. The dual mode communications device according to the embodiment of the present invention may include a selection unit 100 connecting antenna terminals to receive terminals or transmit terminals, a receive path circuit unit allowing RF receive signals from each of the first and second antennas to pass therethrough, a transmit path circuit unit providing RF transmit signals to the transmit terminals of the selection unit, an RF circuit unit converting the RF receive signals from the receive path circuit unit into baseband signals and converting the baseband signals to be transmitted into the RF transmit signals, and a baseband circuit unit performing control and signal processing of the selection unit in a single communications mode among a dual mode and a single mode.
摘要:
There are provided a dual mode communications device and a method of improving a data rate thereof. The dual mode communications device according to the embodiment of the present invention may include a selection unit 100 connecting antenna terminals to receive terminals or transmit terminals, a receive path circuit unit allowing RF receive signals from each of the first and second antennas to pass therethrough, a transmit path circuit unit providing RF transmit signals to the transmit terminals of the selection unit, an RF circuit unit converting the RF receive signals from the receive path circuit unit into baseband signals and converting the baseband signals to be transmitted into the RF transmit signals, and a baseband circuit unit performing control and signal processing of the selection unit in a single communications mode among a dual mode and a single mode.
摘要:
A power amplifier includes an inverter amplification section configured to amplify AC components and remove DC components from at least one input signal, an impedance matching section configured to match an impedance of a transmission path of the at least one input signal amplified by the inverter amplification section, and an amplification section configured to amplify an impedance-matched signal from the impedance matching section according to a predetermined gain. The inverter amplification section includes at least one P-channel metal-oxide semiconductor field effect transistor (MOS FET) having a gate configured to receive the at least one input signal and at least one N-channel MOS FET having a gate configured to receive the at least one input signal. The at least one P-channel MOS FET and the at least one N-channel MOS FET are serially connected.
摘要:
Disclosed is a power amplifier module with a shared ESD protection circuit. There is provided a power amplifier module including: an ESD protection circuit that is connected to an output terminal of the LDO part, an output conductive wire pad that outputs the operating power of the LDO part; a printed conductive wire pad that is electrically connected to the output conductive wire pad of the PA controller; a first power coupler that includes a first primary side conductive wire electrically connected to the printer conductive wire pad; a second power coupler that includes a second primary side conductive wire electrically connected to the printer conductive wire pad; a first PA part; and a second PA part, wherein each of the first PA part and the second PA part is protected from ESD by the ESD protection circuit.
摘要:
Disclosed is a power amplifier module with a shared ESD protection circuit. There is provided a power amplifier module including: an ESD protection circuit that is connected to an output terminal of the LDO part, an output conductive wire pad that outputs the operating power of the LDO part; a printed conductive wire pad that is electrically connected to the output conductive wire pad of the PA controller; a first power coupler that includes a first primary side conductive wire electrically connected to the printer conductive wire pad; a second power coupler that includes a second primary side conductive wire electrically connected to the printer conductive wire pad; a first PA part; and a second PA part, wherein each of the first PA part and the second PA part is protected from ESD by the ESD protection circuit.
摘要:
There is provided an amplifier circuit. The amplifier circuit includes an amplifying unit including at least one transistor; at least one first bias circuit unit including a resistor and connected to the at least one transistor; and at least one second bias circuit unit connected between an input terminal to which an input signal is applied and the at least one transistor so as to block an input signal having a frequency higher than a first frequency or having a frequency lower than a second frequency. The amplifier circuit according to embodiment of the present invention may prevent thermal runaway, remove a harmonic component from an input signal to be amplified and suppress oscillations.
摘要:
There is provided an amplifier circuit. The amplifier circuit includes an amplifying unit including at least one transistor; at least one first bias circuit unit including a resistor and connected to the at least one transistor; and at least one second bias circuit unit connected between an input terminal to which an input signal is applied and the at least one transistor so as to block an input signal having a frequency higher than a first frequency or having a frequency lower than a second frequency. The amplifier circuit according to embodiment of the present invention may prevent thermal runaway, remove a harmonic component from an input signal to be amplified and suppress oscillations.
摘要:
There are provided a bias circuit supplying different levels of bias power according to respective power modes through a simple circuit configuration, and a power amplifier having the same. The bias circuit includes: a bias setting unit setting a bias power voltage level by switching reference power having a pre-set voltage level determined according to a pre-set power mode; and a bias supply unit including a switching element performing switching according to the setting of the bias setting unit and supplying bias power having a voltage level determined according to a switching operation of the switching element.
摘要:
There are provided a bias circuit supplying different levels of bias power according to respective power modes through a simple circuit configuration, and a power amplifier having the same. The bias circuit includes: a bias setting unit setting a bias power voltage level by switching reference power having a pre-set voltage level determined according to a pre-set power mode; and a bias supply unit including a switching element performing switching according to the setting of the bias setting unit and supplying bias power having a voltage level determined according to a switching operation of the switching element.