Abstract: An apparatus, and method therefor, relate generally to broadband IQ generation. In this apparatus, related generally to broadband in-phase and quadrature phase (“IQ”) generation, a divider circuit and a polyphase filter circuit are configured for receiving an oscillator output. The polyphase filter circuit is configured for polyphase filtering the oscillator output into a first quadrature output. The divider circuit is configured for dividing the oscillator output into a second quadrature output. A multiplexer circuit is coupled to the divider circuit and the polyphase filter circuit and configured for selecting either the first quadrature output or the second quadrature output as an IQ output based on a bandwidth of the oscillator output.

Abstract: Method and apparatus for preconditioning and in-use conditioning of transistors formed on a semiconductor-on-insulator structure is described. More particularly, transistors of a programmable logic device (PLD), such as a field programmable gate array (FPGA), are preconditioned to take advantage of charge accumulation owing to a “floating body” effect. This preconditioning takes a form of switching transistors on and off prior to customer operation. Accordingly, semiconductor-on-insulator transistors accumulate charge during this switching period, so when customer operation takes place, transistor switching times are less variable over a period of operation of the PLD. Additionally, a design process and implementation is described for identification and in-use conditioning of transistors that may need conditioning during customer operation to control switching time variability.