A semiconductor structure is provided. The semiconductor structure includes a base, a seed layer, a compound semiconductor layer, a gate structure, a source structure, a drain structure, and a conductive paste. The seed layer is disposed on the base. The compound semiconductor layer is disposed on the seed layer. The gate structure is disposed on the compound semiconductor layer. The source structure and the drain structure are disposed on both sides of the gate structure. In addition, the conductive paste is disposed between the base and a lead frame, and the conductive paste extends to the side surface of the base.

A semiconductor structure is provided. The semiconductor structure includes a base, a seed layer, a compound semiconductor layer, a gate structure, a source structure, a drain structure, and a conductive paste. The seed layer is disposed on the base. The compound semiconductor layer is disposed on the seed layer. The gate structure is disposed on the compound semiconductor layer. The source structure and the drain structure are disposed on both sides of the gate structure. In addition, the conductive paste is disposed between the base and a lead frame, and the conductive paste extends to the side surface of the base.

A semiconductor structure is provided. The semiconductor structure includes a base, a seed layer, a compound semiconductor layer, a gate structure, a source structure, a drain structure, and a conductive paste. The seed layer is disposed on the base. The compound semiconductor layer is disposed on the seed layer. The gate structure is disposed on the compound semiconductor layer. The source structure and the drain structure are disposed on both sides of the gate structure. In addition, the conductive paste is disposed between the base and a lead frame, and the conductive paste extends to the side surface of the base.

One aspect of this disclosure is a power amplifier system that includes a control interface, a power amplifier, a passive component on a same die as the power amplifier, and a bias circuit on a different die than the power amplifier. The control interface can operate as a serial interface or as a general purpose input/output interface. The power amplifier can be controllable based at least partly on an output signal from the control interface. The bias circuit can generate a bias signal based at least partly on an indication of the electrical property of the passive component. Other embodiments of the system are provided along with related methods and components thereof.

One aspect of this disclosure is a power amplifier module that includes a power amplifier on a substrate and a semiconductor resistor on the substrate. The power amplifier includes a bipolar transistor having a collector, a base, and an emitter. The collector has a doping concentration of at least 310.sup.16 cm.sup.3 at an interface with the base. The collector also has at least a first grading in which doping concentration increases away from the base. The semiconductor resistor includes a resistive layer that that includes the same material as a layer of the bipolar transistor. Other embodiments of the module are provided along with related methods and components thereof.

Electrolyte for a solid-state battery includes a body having grains of inorganic material sintered to one another, where the grains include lithium. The body is thin, has little porosity by volume, and has high ionic conductivity.

Electrolyte for a solid-state battery includes a body having grains of inorganic material sintered to one another, where the grains include lithium. The body is thin, has little porosity by volume, and has high ionic conductivity.

Disclosed are semiconductor packages and methods of manufacturing the same. The semiconductor package comprises a substrate, a first unit structure attached to the substrate, and a second unit structure attached to the first unit structure. Each of the first and second unit structures comprises an adhesive layer, a lower semiconductor chip on the adhesive layer, an upper semiconductor chip on and in contact with the lower semiconductor chip, and a plurality of vias penetrating the upper semiconductor chip and connecting with the lower and upper semiconductor chips.

Disclosed are semiconductor packages and methods of manufacturing the same. The semiconductor package comprises a substrate, a first unit structure attached to the substrate, and a second unit structure attached to the first unit structure. Each of the first and second unit structures comprises an adhesive layer, a lower semiconductor chip on the adhesive layer, an upper semiconductor chip on and in contact with the lower semiconductor chip, and a plurality of vias penetrating the upper semiconductor chip and connecting with the lower and upper semiconductor chips.

Electrolyte for a solid-state battery includes a body having grains of inorganic material sintered to one another, where the grains include lithium. The body is thin, has little porosity by volume, and has high ionic conductivity.