Abstract: An embodiment of a dual-path amplifier includes a power splitter connected to first and second power amplifiers respectively connected to first and second transmission lines connected to a power combiner having a phase-offset deficit at the second harmonic frequency 2f0, where the first and second transmission lines are designed to provide a complementary phase offset at 2f0 substantially equal to the phase-offset deficit such that the two amplified signals will be combined at the power converter with a total phase offset at 2f0 of about 180 degrees in order to reduce harmonic distortion in the amplified output signal, without substantially diminishing the output power at the fundamental frequency f0. In certain PCB-based implementations, the transmission lines include metal traces and lumped elements providing different impedance transformations that achieve the complementary phase offset, where the metal traces may have significantly different physical and electrical characteristics.

Abstract: A radio frequency (RF) amplifier configured to operate at a fundamental frequency (f0) includes a transistor with a transistor output, an output matching network coupled to the transistor output, and a reflection absorption circuit. The output matching network includes an output path device connected between the transistor output and an output of the RF amplifier. The reflection absorption circuit is coupled between the transistor output and the output path device, and is configured to absorb reflected signal energy from the output path device.

Abstract: The embodiments described herein include amplifiers that are typically used in radio frequency (RF) applications. Specifically, the amplifiers described herein include one or more transient termination circuits coupled to transistor inputs. For example, the transient termination circuits can be configured to reduce the transient response for some signal energy at frequencies below a baseband frequency (fB) of signals being amplified while not similarly reducing the transient response for signal energy near a fundamental frequency (f0) of the signals being amplified.

Abstract: An embodiment of a dual-path amplifier includes a power splitter connected to first and second power amplifiers respectively connected to first and second transmission lines connected to a power combiner having a phase-offset deficit at the second harmonic frequency 2f0, where the first and second transmission lines are designed to provide a complementary phase offset at 2f0 substantially equal to the phase-offset deficit such that the two amplified signals will be combined at the power converter with a total phase offset at 2f0 of about 180 degrees in order to reduce harmonic distortion in the amplified output signal, without substantially diminishing the output power at the fundamental frequency f0. In certain PCB-based implementations, the transmission lines include metal traces and lumped elements providing different impedance transformations that achieve the complementary phase offset, where the metal traces may have significantly different physical and electrical characteristics.

Abstract: A radio frequency (RF) amplifier configured to operate at a fundamental frequency (f0) includes a transistor with a transistor output, an output matching network coupled to the transistor output, and a reflection absorption circuit. The output matching network includes an output path device connected between the transistor output and an output of the RF amplifier. The reflection absorption circuit is coupled between the transistor output and the output path device, and is configured to absorb reflected signal energy from the output path device.

Abstract: The embodiments described herein include amplifiers that are typically used in radio frequency (RF) applications. Specifically, the amplifiers described herein include one or more transient termination circuits coupled to transistor inputs. For example, the transient termination circuits can be configured to reduce the transient response for some signal energy at frequencies below a baseband frequency (fB) of signals being amplified while not similarly reducing the transient response for signal energy near a fundamental frequency (f0) of the signals being amplified.

Abstract: A radio frequency (RF) amplifier circuit includes an amplifier device and a first baseband bias circuit. The amplifier device includes a first input configured to receive a first signal to be amplified and a first output configured to output a first amplified signal. The first baseband bias circuit includes an input coupled to the first output of the amplifier device. The first baseband bias circuit includes a first envelope decoupling circuit and a first harmonic decoupling circuit. The first envelope decoupling circuit includes a first bulk capacitor and a first distributed inductor configured to resonate in a baseband frequency range. The first harmonic decoupling circuit includes a second bulk capacitor and a second distributed inductor configured to resonate at a harmonic frequency of the frequency of the first signal received at the input of the amplifier device.

Abstract: A radio frequency (RF) amplifier circuit includes an amplifier device and a first baseband bias circuit. The amplifier device includes a first input configured to receive a first signal to be amplified and a first output configured to output a first amplified signal. The first baseband bias circuit includes an input coupled to the first output of the amplifier device. The first baseband bias circuit includes a first envelope decoupling circuit and a first harmonic decoupling circuit. The first envelope decoupling circuit includes a first bulk capacitor and a first distributed inductor configured to resonate in a baseband frequency range. The first harmonic decoupling circuit includes a second bulk capacitor and a second distributed inductor configured to resonate at a harmonic frequency of the frequency of the first signal received at the input of the amplifier device.

Abstract: A lead, for a packaged transistor device, having a signal portion and a bias line portion, with the signal portion and the bias line portion each having a proximal end and a distal end. The signal portion and the bias line portions of the lead are integrally formed together as a single conductive component, with the proximal end of the bias line portion integrated into the signal portion of the lead and with the distal ends of the signal portion and the bias line portion physically separate from each other.

Abstract: A lead, for a packaged transistor device, having a signal portion and a bias line portion, with the signal portion and the bias line portion each having a proximal end and a distal end. The signal portion and the bias line portions of the lead are integrally formed together as a single conductive component, with the proximal end of the bias line portion integrated into the signal portion of the lead and with the distal ends of the signal portion and the bias line portion physically separate from each other.

Abstract: A linear optimized isolation transformer may include a magnetic core having a primary side and a secondary side; a primary side winding on the primary side; a primary side terminal electrically coupled to the primary side winding; a secondary side winding on a the secondary side; a secondary side terminal electrically coupled to the secondary side winding; an isolation dielectric placed between the primary side winding and the secondary side winding and having a shape that fills all of the space between the primary side and the secondary side that is not occupied by the core, the isolation dielectric including a permanent high-Q material selected to maintain a high value isolation independent of pressure differences resulting from operation at different altitudes; and wherein the primary side terminal and the secondary side terminal are positioned on opposing ends of a long axis of the magnetic core.

Abstract: A linear optimized isolation transformer may include a magnetic core having a primary side and a secondary side; a primary side winding on the primary side; a primary side terminal electrically coupled to the primary side winding; a secondary side winding on a the secondary side; a secondary side terminal electrically coupled to the secondary side winding; an isolation dielectric placed between the primary side winding and the secondary side winding and having a shape that fills all of the space between the primary side and the secondary side that is not occupied by the core, the isolation dielectric including a permanent high-Q material selected to maintain a high value isolation independent of pressure differences resulting from operation at different altitudes; and wherein the primary side terminal and the secondary side terminal are positioned on opposing ends of a long axis of the magnetic core.

Abstract: The present disclosure relates, according to some embodiments, to compositions, organisms, systems, and methods for expressing a gene product in a plant (e.g., a monocot) using a promoter operable in one or more plant tissues and/or cells. In some embodiments, an isolated nucleic acid may comprise an expression control sequence having the sequence of nucleotides 1-4726 of SEQ ID NO: 1, wherein the expression control sequence has stem-regulated and/or defense-inducible promoter activity in at least one monocot (e.g., at least two monocots).

Abstract: The invention is directed to isolated promoters from stem-regulated, defense-inducible genes, such as OMT promoters. The promoters are useful in expression cassettes and expression vectors for the transformation of plants. Particularly, the invention provides transgenic plants of rice and sugarcane that have been modified such that expression of a heterologous coding sequence is directed by an OMT promoter and is limited to stem tissues or may be upregulated by the presence of a defense-inducing agent. The invention also discloses methods for producing the expression vectors and transgenic plants.

Abstract: The invention is directed to isolated promoters from stem-regulated, defense-inducible genes, such as JAS promoters. The promoters are useful in expression cassettes and expression vectors for the transformation of plants. Particularly, the invention provides transgenic plants of rice and sugarcane that have been modified such that expression of a heterologous coding sequence is directed by an JAS promoter and is limited to stem tissues or may be upregulated by the presence of a defense-inducing agent. The invention also discloses methods for producing the expression vectors and transgenic plants.

Abstract: The invention is directed to isolated promoters from stem-regulated, defense-inducible genes, such as JAS promoters. The promoters are useful in expression cassettes and expression vectors for the transformation of plants. Particularly, the invention provides transgenic plants of rice and sugarcane that have been modified such that expression of a heterologous coding sequence is directed by an JAS promoter and is limited to stem tissues or may be upregulated by the presence of a defense-inducing agent. The invention also discloses methods for producing the expression vectors and transgenic plants.

Abstract: Linoleic acid is converted into ?-linolenic acid by the enzyme ?6-desaturase. The present invention is directed to isolated nucleic acids comprising the ?6-desaturase gene. More particularly, the isolated nucleic acid comprises the promoter, coding region and termination regions of the ?6-desaturase gene. The present invention provides recombinant constructions comprising the ?6-desaturase coding region in functional combination with heterologous regulatory sequences. The nucleic acids and recombinant constructions of the instant invention are useful in the production of GLA in transgenic organisms.

Abstract: The invention is directed to isolated promoters from stem-regulated, defense-inducible genes, such as OMT promoters. The promoters are useful in expression cassettes and expression vectors for the transformation of plants. Particularly, the invention provides transgenic plants of rice and sugarcane that have been modified such that expression of a heterologous coding sequence is directed by an OMT promoter and is limited to stem tissues or may be upregulated by the presence of a defense-inducing agent. The invention also discloses methods for producing the expression vectors and transgenic plants.

Abstract: The invention is directed to isolated promoters from stem-regulated, defense-inducible genes, such as OMT promoters. The promoters are useful in expression cassettes and expression vectors for the transformation of plants. Particularly, the invention provides transgenic plants of rice and sugarcane that have been modified such that expression of a heterologous coding sequence is directed by an OMT promoter and is limited to stem tissues or may be upregulated by the presence of a defense-inducing agent. The invention also discloses methods for producing the expression vectors and transgenic plants.

Abstract: Linoleic acid is converted into ?-linolenic acid by the enzyme ?6-desaturase. The present invention is directed to isolated nucleic acids comprising the ?6-desaturase gene. More particularly, the isolated nucleic acid comprises the promoter, coding region and termination regions of the ?6-desaturase gene. The present invention provides recombinant constructions comprising the ?6-desaturase coding region in functional combination with heterologous regulatory sequences. The nucleic acids and recombinant constructions of the instant invention are useful in the production of GLA in transgenic organisms.