Abstract: The present invention breaks up the frequency bands which can be filtered by a simple low-loss band-pass or low pass filter. The second harmonic frequency is reduced by use of a non-linear clipper element which controls the driving waveform symmetry and can reduce the harmonics by as much as 5-15 db which makes the filter much simpler and allows the amplifier to remain wide-band. The output waveform from the amplifier is symmetrical or nearly symmetrical.

Abstract: The present invention improves the linearity characteristics of a transistor, namely the input/output intercept points (IIP3/OIP3) and intermodulation distortion (IM3), while maintaining a high transconductance and high electron velocity in the conducting channel. The present invention also improves the manufacturability, yield, and immunity to bias-point drift, of a linear transistor. In one embodiment, the present invention implements triple pulse doping or even higher pulse doping for immunity to process variation as well as low parasitic leakage. In an alternative embodiment, the present invention implements a bilinear V-shaped composition grading for engineering the ID-VGS curve for high OIP3. In another alternative embodiment, the present invention implements a quadratic or U-shaped composition grading for engineering the ID-VGS curve for high OIP3.

Abstract: A transmit-receive (T-R) circuit is switchable for both small and large signals using a high impedance low noise amplifier, which lacks T-R switches, and which permits implementation using only bipolar transistors for integration into the fabrication of integrated circuits. The relatively large T-R switch loss is eliminated, resulting in better efficiency in operation of the T-R circuit. When the T-R circuit is in a transmit mode, a power amplifier is in an ON state, and the low noise amplifier is in an OFF state, such that the low noise amplifier has a high impedance between the LNA input and the LNA output to block a first signal from the LNA input from reaching the antenna. When the T-R circuit is in a receive mode, the power amplifier is in an OFF state, and the low noise amplifier is in an ON state with a low impedance.

Abstract: A method for fabricating an electronic device includes fabricating a plurality of electronic components on a substrate; fabricating a plurality of posts on the plurality of electronic components; depositing filling material between the plurality of posts; and depositing a plurality of top layers, with each top layer disposed on a respective post, thereby fabricating the electronic device. Each top layer is composed of a metal. The step of fabricating the posts includes: fabricating the posts to have identical heights above the substrate. Each post is thermally-conductive, and may be composed of gold. The filling material is composed of MgO, which may be electron beam evaporated to be disposed between the posts. The step of depositing the filling material includes: controlling a thickness of the MgO being deposited by controlling an evaporation rate of the MgO.

Abstract: The present invention breaks up the frequency bands which can be filtered by a simple low-loss band-pass or low pass filter. The second harmonic frequency is reduced by use of a non-linear clipper element which controls the driving waveform symmetry and can reduce the harmonics by as much as 5-15 db which makes the filter much simpler and allows the amplifier to remain wide-band. The output waveform from the amplifier is symmetrical or nearly symmetrical.

Abstract: The present invention breaks up the frequency bands which can be filtered by a simple low-loss band-pass or low pass filter. The second harmonic frequency is reduced by use of a non-linear clipper element which controls the driving waveform symmetry and can reduce the harmonics by as much as 5-15db which makes the filter much simpler and allows the amplifier to remain wide-band. The output waveform from the amplifier is symmetrical or nearly symmetrical.

Abstract: The present invention breaks up the frequency bands which can be filtered by a simple low-loss band-pass or low pass filter. The second harmonic frequency is reduced by use of a non-linear clipper element which controls the driving waveform symmetry and can reduce the harmonics by as much as 5-15 db which makes the filter much simpler and allows the amplifier to remain wide-band. The output waveform from the amplifier is symmetrical or nearly symmetrical.

Abstract: The present invention breaks up the frequency bands which can be filtered by a simple low-loss band-pass or low pass filter. The second harmonic frequency is reduced by use of a non-linear clipper element which controls the driving waveform symmetry and can reduce the harmonics by as much as 5-15 db which makes the filter much simpler and allows the amplifier to remain wide-band. The output waveform from the amplifier is symmetrical or nearly symmetrical.

Abstract: This invention controls and modulates switched-mode power amplifiers to enable the production of signals that include amplitude modulation (and possibly, but not necessarily, phase modulation), the average power of which may be controlled over a potentially wide range.

Abstract: This invention controls and modulates switched-mode power amplifiers to enable the production of signals that include amplitude modulation (and possibly, but not necessarily, phase modulation), the average power of which may be controlled over a potentially wide range.

Abstract: This invention controls and modulates switched-mode power amplifiers to enable the production of signals that include amplitude modulation (and possibly, but not necessarily, phase modulation), the average power of which may be controlled over a potentially wide range.

Abstract: A power amplifier circuit whose performance is optimized by operating its stages in substantially close to a Class B mode by reducing quiescent current during low driver signal levels. As the driver signal amplitude increases, the operation of the amplifier is configured to dynamically adjust to be in a Class AB mode, thereby increasing the power efficiency of the overall circuit at kiw drive levels. A further enhancement to the power amplifier circuit includes a temperature compensation circuit to adjust the bias of the amplifier so as to stabilize the performance in a wide temperature range.

Abstract: This invention controls and modulates switched-mode power amplifiers to enable the production of signals that include amplitude modulation (and possibly, but not necessarily, phase modulation), the average power of which may be controlled over a potentially wide range.

Abstract: A power amplifier circuit is disclosed, whose power efficiency is optimized by operating its stages in substantially close to a Class B mode by reducing the quiescent current during low driver signal levels. As the driver signal amplitude increases, the amplifier is dynamically biased to operate in a Class AB mode. A further enhancement to the power amplifier circuit includes a temperature compensation circuit to adjust the bias of the amplifier so as to stabilize the performance over a wide temperature range.

Abstract: A power amplifier circuit whose performance is optimized by operating its stages in substantially close to a Class B mode by reducing quiescent current during low driver signal levels. As the driver signal amplitude increases, the operation of the amplifier is configured to dynamically adjust to be in a Class AB mode, thereby increasing the power efficiency of the overall circuit at kiw drive levels. A further enhancement to the power amplifier circuit includes a temperature compensation circuit to adjust the bias of the amplifier so as to stabilize the performance in a wide temperature range.