Abstract: A method and apparatus reduce the out-of-band frequency components of an RF amplified signal, preferably a CDMA signal, which has a carrier frequency which is not known in advance. The apparatus and method feature locating the frequency of the incoming signal by examining an RF output signal having both in-band frequency components and out-of-band frequency components. Typically the output signal is generated using a high-power, Class A/B amplifier. Once the frequency of the carrier has been determined, the out-of-band components are used to generate control signals which, in, for example, a feedback or feedforward circuitry, reduce the energy of the out-of-band signals and thereby provide a more linear amplifier transfer function.

Abstract: A method and apparatus for reducing out-of-band frequency components of an RF amplified input signal, the amplified signal having both in-band frequency components and out-of-band frequency components, employ a feedforward network in which a microprocessor can sweep a frequency generator output connected to a mixer, the other input of the mixer being the amplified output, to find the carrier frequency of the input signal, and thereafter modify or control the feedforward circuit to reduce out-of-band frequency component energies in a particular manner. For example, gain and phase of a variable gain-phase network in a feedforward circuit structure can be modified for reducing the out-of-band frequency component energy.

Abstract: A desk for use in a vehicle has a top that defines receptacles therein for holding office supplies and equipment. The desk is mounted in the passenger seat and held by the normal lap belt of the vehicle supports are adjustable to allow the height of the top of the desk to be varied, and to allow leveling of the desk. A slide is movable from the top so the slide can extend towards the driver's seat, and the slide is adapted to receive a portable computer. One corner of the desk mounts a cup holder to be adjacent to the driver, and a holder for eyeglasses is adjacent to the cup holder.