Complementary Frequency Multiplying Circuitry

Abstract

A frequency multiplying circuit can include a first pull-down transistor configured to receive an input signal having a fundamental frequency, a first pull-up transistor configured to receive the input signal, and a coil having a first terminal coupled to the first pull-down transistor and having a second terminal coupled to the first pull-up transistor. The coil can be coupled to a differential output at which an output signal having an output frequency that is a multiple of the fundamental frequency is produced. The frequency multiplying circuit can include one or more additional pull-down transistors and one or more additional pull-up transistors. The coil can be part of an output transformer. One or more adjustable capacitors can be coupled to the output transformer.

Dependencies are inferred from the claim text.