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  • RF Power Amplifier Efficiency: Big Challenges for Designers
    The basic laws of thermodynamics ensure that no electronic device can achieve 100% efficiency-- although switch-mode power supplies come close (approaching 98%). Unfortunately, anything that generates RF power cannot presently boast such near-ideal performance as there are simply too many
  • Selecting antenna/power amplifier combinations
    Selecting antenna/power amplifier combinations for the coming new RF immunity standards.
  • Selecting Antenna/Power Amplifier Combinations for the Coming New RF Immunity Standards
    candidate for the upper frequency for consumer products. When test facilities test products for compliance to these new RF immunity standards, which antenna/amplifier combination will prove the most effective at producing the necessary volts per meter over the new band? What is the cost-benefit
  • Microwave or RF Amplifier Test Setup (.pdf)
    The sweeper generates a microwave frequency of 1.0 to 26.5 GHz with a leveled power output of up to +10 dBm. The power goes through the coupler to the Amplifier Under Test. 20 dB of the power is coupled to a Krytar Power Meter.
  • Amplifier Testing With The 37300C VNA
    Vector Network Analyzers (VNA) are designed to measure S-parameters of RF and Microwave devices and circuits. S-parameters are by definition ratios and as such the actual test power utilized is not critical. When amplifier S-parameters are measured it becomes important to know approximate input
  • RF Power Amplifiers for Wireless Communications, Second Edition
    RF Power Amplifiers for Wireless Communications, Second Edition. Supported with nearly 200 illustrations, this book offers practitioners a comprehensive, practical, and up-to-date understanding of how to tackle a PA (power amplifier) design with confidence and quickly determine the cause
  • Air Cooled Heat Pipe Assembly (.pdf)
    The following photos of a complex heat sink assembly demonstrate a wide variety of high technology cooling solutions. This cooler for an RF power amplifier is capable of dissipating many hundreds of Watts of power at a thermal resistance of less than 0.02 C/W in high-speed, forced airflow. It uses
  • Using the TC1142 for Biasing a GaAs Power Amplifier
    RF bandwidths for cellular systems such as AMPS, TACS, GSM, TDMA, and CDMA range from 800MHz to 1.0GHz. To provide RF transmissions over this range of frequencies, Gallium Arsenide (GaAs) has become the technology of choice and offers several advantages over silicon technology: a much higher cutoff

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