Abstract:
Systems and methods may be provided for a CMOS RF antenna switch. The systems and methods for the CMOS RF antenna switch may include an antenna that is operative to transmit and receive signals over at least one radio frequency (RF) band, and a transmit switch coupled to the antenna, where the transmit switch is enabled to transmit a respective first signal to the antenna and disabled to prevent transmission of the first signal to the antenna. the systems and methods for the CMOS RF antenna switch may further include a receiver switch coupled to the antenna, where the receiver switch forms a filter when enabled and a resonant circuit when disabled, where the filter provides for reception of a second signal received by the antenna, and where the resonant circuit blocks reception of at least the first signal.
Abstract:
An organic light-emitting device including a substrate; a first electrode; a second electrode; an emission layer; a first electron transport layer; a second electron transport layer; a third electron transport layer; and a hole transport layer, wherein the first electron transporting material has an electron mobility smaller than an electron mobility of the second electron transporting material at an electric field of 800 to 1000 V/cm, the second electron transporting material and the third electron transporting material each independently have an electron mobility of about 10−8 to about 10 cm2/V·s at an electric field of 800 to 1000 V/cm, and the third electron transport layer has an electron injection barrier of about 0.2 eV or less at an interface between the third electron transport layer and the second electrode.
Abstract:
An organic light emitting diode (OLED) display including a substrate main body; a thin film transistor on the substrate main body; and an organic light emitting diode including a transparent electrode connected with the thin film transistor and being capable of injecting electrons, an organic emission layer on the transparent electrode, and a reflective electrode on the organic emission layer and being capable of injecting holes, wherein the organic emission layer includes an electron injection unit on the transparent electrode, the electron injection unit including an electron injection metal layer, an electron injection layer, and an electron injection dipole layer, and a light emitting unit on the electron injection unit.
Abstract:
Systems and methods are provided for a transformer or balun function with reference enhancement. The systems and methods may include a transformer having at least a primary winding and a secondary winding for reference enhancement, where the primary winding includes a center tap, where the secondary winding includes a first port and a second port, and an electrical connection that electrically connects the second port and the center tap of the primary winding to provide a common reference for the primary winding and the secondary winding. The primary winding of the transformer may be configured to receive differential outputs of a power amplifier, and the transformer may be configured to convert the differential outputs from a balanced signal to an unbalanced signal available at the first port of the secondary winding.
Abstract:
A power amplifier system can include a plurality of driver amplifiers and a plurality of power amplifiers, where each driver amplifier and power amplifier includes at least one respective input port and at least one respective output port. The power amplifier system also includes a shared inductive device that provides common interstage matching between the respective output ports of the plurality of driver amplifiers and the respective input ports of the plurality of power amplifiers. The shared inductive device can be a shared inductor or a shared transformer.
Abstract:
A multiprocessor system and method thereof are provided. The example multiprocessor system may include first and second processors, a dynamic random access memory having a memory cell array, the memory cell array including a first memory bank coupled to the first processor through a first port, second and fourth memory banks coupled to the second processor through a second port, and a third memory bank shared and connected with the first and second processors through the first and second ports, and a bank address assigning unit for assigning bank addresses to select individually the first and second memory banks, as the same bank address through the first and second ports, so that starting addresses for the first and second memory banks become equal in booting, and assigning bank addresses to select the third memory bank, as different bank addresses through the first and second ports, and assigning, through the second port, bank addresses to select the fourth memory bank, as the same bank address as a bank address to select the third memory bank through the first port.
Abstract:
Silanylamine-based compounds represented by Formula 1 are provided. Methods of preparing the compounds and organic light emitting devices including organic layers comprising the silanylamine-based compounds are also provided. The silanylamine-based compounds have excellent electrical stability and electron transporting capabilities. Thus, the silanylamine-based compounds may be effectively used for red, green, blue, and white fluorescent and phosphorescent materials used to form hole injection layers, hole transport layers, and emissive layers in organic light emitting devices. Organic light emitting devices using these compounds have high efficiency, low driving voltages, high luminance and long lifetimes.
Abstract:
Embodiments of the present invention are directed to a heterocyclic compound and an organic light-emitting device including the heterocyclic compound. The organic light-emitting devices using the heterocyclic compounds have high-efficiency, low driving voltage, high luminance and long lifespan.
Abstract:
Provided are an organic light emitting device (OLED) and a flat display including the OLED. The OLED includes an organic layer which includes a pixel electrode, an opposite electrode, and at least an emission layer between the pixel electrode and the opposite electrode, wherein the emission layer includes a long wavelength-blue emission layer emitting blue light having a long wavelength and a short wavelength-blue emission layer emitting blue light having a short wavelength. The long wavelength-blue emission layer is positioned in a location to enhance emission of blue light from the emission layer. The OLED can emit blue light with high efficiency and high brightness.
Abstract:
Systems and methods are disclosed for providing a linear polar transmitter. The systems and methods may include generating an input amplitude signal and an input phase signal, where the input amplitude signal and the input phase signal are orthogonal components of an input signal, and where the input amplitude signal and the input phase signal are generated on respective first and second signal paths. The systems and methods may also include processing the input amplitude signal along the first signal path using an amplitude error signal to generate a predistorted amplitude signal, and processing the input phase signal along the second signal path using an phase error signal to generate a predistorted phase signal. The systems and methods may also include providing the predistorted amplitude signal along the first signal path and the predistorted phase signal along the second signal path to a power amplifier to generate an output signal, where the amplitude error signal is generated from a comparison of at least an amplitude portion of the output signal with the predistorted amplitude signal and where the phase error signal is generated from a comparison of at least a phase portion of the output signal with the predistorted phase signal.