Abstract: A current mirror circuit for biasing a power amplifier includes a modified Wilson current mirror with a pair of first and second mirror transistors connected to a third transistor. The first mirror transistor is configured for operating in a saturation mode, with a gate voltage of the first mirror transistor being lower than a gate voltage of the power amplifier. The third transistor charges the power amplifier circuit during a positive half cycle of an input signal and the first mirror transistor discharges the power amplifier circuit during a negative half cycle of the input signal at different rates.

Abstract: A circuit includes a dielectric layer, a first via residing in the dielectric layer, a second via residing in the dielectric layer, and an inductor. The inductor includes a first inductor element and a second inductor element. The first inductor element is formed by a first transmission line including a plurality of segments defined between a first end and a second end thereof. The second inductor element is formed by a second transmission line including a plurality of segments defined between a first end and a second end thereof. A first port is defined by one segment of the plurality of segments of the second transmission line, wherein current flows in the inductor in the same direction from a second port defined at the first end of the first transmission line to the first port, and from the first port to a third port defined at the second via.

Abstract: An RF power amplifier circuit has a signal input and a signal output. An input matching network connected to the signal input, and an output matching network is connected to the signal output. There is a power amplifier with an input connected to the input matching network, and an output connected to the output matching network. A bias boosting circuit is connected to the input of the power amplifier, and the bias boosting circuit comprises a cascode current mirror that is defined by a first cascode circuit and a second cascode circuit, and a biasing transistor that is connected to an output of the cascode current mirror. The biasing transistor, together with the power amplifier, defines a current mirror. The bias boosting circuit is thus a dual current mirror circuit that boosts the bias of the power amplifier.

Abstract: A circuit includes a flip-chip die and a laminate substrate. The flip-chip die includes a first bump and a second bump. A first metal layer is disposed on the laminate substrate. The first metal layer includes a first transmission line having a plurality of segments forming a first spiral inductor. A first end of the first transmission line is electrically coupled to the first bump. A second end of the first transmission line is electrically coupled to a first power supply pin.