Abstract: A dual-drive power amplifier (PA) where the PA core includes a differential pair of transistors M1 and M2 that are driven by a coupling network having two transmission-line couplers, where a first transmission line section of a coupler is configured to transmit an input signal Vin through to drive a gate of the opposite transistor, while the second transmission line section is grounded at one end and coupled with the first transmission line section such that a coupled portion ?Vin of the input signal Vin drives the source terminal of a corresponding transistor. The arrangement of the coupling network allows the source terminals to be driven below ground potential. Embodiments disclosed here further provide an input matching network, a driver, an inter-stage matching network, and an output network for practical implementation of the PA core.

Abstract: A dual-drive power amplifier (PA) where the PA core includes a differential pair of transistors M1 and M2 that are driven by a coupling network having two transmission-line couplers, where a first transmission line section of a coupler is configured to transmit an input signal Vin through to drive a gate of the opposite transistor, while the second transmission line section is grounded at one end and coupled with the first transmission line section such that a coupled portion ?Vin of the input signal Vin drives the source terminal of a corresponding transistor. The arrangement of the coupling network allows the source terminals to be driven below ground potential. Embodiments disclosed here further provide an input matching network, a driver, an inter-stage matching network, and an output network for practical implementation of the PA core.

Abstract: A dual-drive power amplifier (PA) where the PA core includes a differential pair of transistors M1 and M2 that are driven by a coupling network having two transmission-line couplers, where a first transmission line section of a coupler is configured to transmit an input signal Vin through to drive a gate of the opposite transistor, while the second transmission line section is grounded at one end and coupled with the first transmission line section such that a coupled portion aVin of the input signal Vin drives the source terminal of a corresponding transistor. The arrangement of the coupling network allows the source terminals to be driven below ground potential. Embodiments disclosed here further provide an input matching network, a driver, an inter-stage matching network, and an output network for practical implementation of the PA core.

Abstract: A ladder step attachment. The ladder step attachment includes a base having a pair of arms extending away from an upper surface thereof. The pair of arms extend at an angle such that a distal end of the pair of arms is closer to a rear side of the base than to a front side of the base. A fastener is located on the distal end, wherein the fastener can removably secure to a rung of a ladder. The base further includes a cutout along the front side, wherein a platform is secured to the base at a lateral side of the cutout via a hinge. The platform can move between an open position and a closed position, wherein the platform is coplanar with the base when in the closed position.

Abstract: A ladder step attachment. The ladder step attachment includes a base having a pair of arms extending away from an upper surface thereof. The pair of arms extend at an angle such that a distal end of the pair of arms is closer to a rear side of the base than to a front side of the base. A fastener is located on the distal end, wherein the fastener can removably secure to a rung of a ladder. The base further includes a cutout along the front side, wherein a platform is secured to the base at a lateral side of the cutout via a hinge. The platform can move between an open position and a closed position, wherein the platform is coplanar with the base when in the closed position.

Abstract: A medicament adsorbate containing corn syrup having contained therein from about 10 to about 90% by weight of the adsorbate of a medicament drug a magnesium trisilicate having a surface area of at least 400 m.sup.2 /g and having a structure with multiple interstitial spaces, and having adsorbed therein from about 0.5 to about 30% by weight of the adsorbate of a medicament drug, wherein the medicament drug is an antihistamine. A reduction in the electrostatic forces between adsorbates is experienced due to the particle size of the adsorbate being in the range greater than 40 to about 800 um, most of the adsorbates prepared being a particle size greater than 150 um, which allows for better processing.