9 WIRELESS COMMUNICATIONS DEVICES AND COMPONENTS, NAMELY RADIO FREQUENCY (RF) AND MICROWAVE RECEIVERS AND TRANSMITTERS, TRANSCEIVERS, POWER AMPLIFIERS, LOW NOISE AMPLIFIERS, BUFFER AMPLIFIERS, DOWN CONVERTERS, UP CONVERTERS, RADIO FREQUENCY (RF) AND MICROWAVE MIXERS AND FILTERS, VOLTAGE-CONTROLLED OSCILLATORS, PHASED-LOCK LOOPS, AND ELECTRONIC SWITCHES