Abstract: In an embodiment, an apparatus and system comprising a first inductor with a first diameter; and a switched inductor including a metal layer and a switch; wherein when the switch is closed the switch connects the metal layer of the switched inductor to form an inductor with a parallel circuit enabling current to flow through the switched conductor; and wherein when the switch is open, current is not enabled to flow through the switched conductor. In another embodiment, a method for tuning a high-Q inductor, the method comprising closing a switch of a switched inductor, wherein the switch connects the switched inductor to a first inductor; wherein closing the switch enables current to flow though the switched inductor as well as the first inductor to change the inductance of the high Q inductor.

Abstract: An apparatus comprising two inductors; wherein the two inductors are layered on top of each other in different layers of metal of a circuit; wherein each inductor of the inductor has a set of turns; wherein the current path of the two inductors is in the same direction.

Abstract: In a first and second embodiment, an apparatus and system comprising a set of voltage controlled oscillators (VCOs); wherein each VCO of the set of VCOs has an LC tank; wherein each VCO of the set of VCOs is connected via a transmission line. In a third embodiment, a method comprising connecting each VCO in a set of VCOs by connecting each respective LC tank of each VCO of the set of VCOs with a transmission line.

Abstract: An apparatus and system for a clock buffer. The clock buffer comprises a source follower, and the source follower comprises a voltage source and a resistor.

Abstract: The present invention is an amplifier circuit that permits variable gain control, comprising an input terminal to which a high frequency input signal is supplied; an amplifier transistor to the gate of which the high frequency input signal supplied to the input terminal is supplied and which generates an amplified signal at the drain side; and a variable attenuator provided in a signal transmission line between the input terminal and the gate of the amplifier transistor, in which a plurality of attenuation units in which an attenuation capacitor and a switch transistor are serially connected are provided in parallel between the signal transmission line and a power supply, and the attenuation ratio of which is variably controlled by controlling the conduction of the switch transistor.

Abstract: The present invention is an amplifier circuit that permits variable gain control, comprising an input terminal to which a high frequency input signal is supplied; an amplifier transistor to the gate of which the high frequency input signal supplied to the input terminal is supplied and which generates an amplified signal at the drain side; and a variable attenuator provided in a signal transmission line between the input terminal and the gate of the amplifier transistor, in which a plurality of attenuation units in which an attenuation capacitor and a switch transistor are serially connected are provided in parallel between the signal transmission line and a power supply, and the attenuation ratio of which is variably controlled by controlling the conduction of the switch transistor.