RF Power Amplifiers High Efficiency Power Amplifier HePA850 Model: RF100306 (NTQA50UA) Operation Instruction Date: January 9, 2006 Version. 1.
RF Power Amplifiers Introduction This document presents description of the Andrew Corporation 850 Band HePA (High Efficiency Power Amplifier) amplifiers. The HePA850 amplifier is a high power, RF amplifier intended to provide signal amplification and conditioning. The HePA850 amplifier is compatible with GSM and EDGE air interfaces operating in U.S. domestic cell sites where FCC compliance is mandatory.
RF Power Amplifiers This stage brings the signal to its desired high power level, it is the heart of the RF section of the unit. The unit power, linearity and efficiency directly come from this block. − Power conversion and conditioning circuit This block is made of a DC/DC converter and various voltage regulators to do the interface between the customer supply network and the internal functions of the unit. It provides all the voltages and signal interface to the internal blocks of the unit.
RF Power Amplifiers Inputs and Outputs: The amplifier is powered from a DC supply voltage, which can range from -38VDC to 58.5VDC. The DC power is brought into the amplifier through a D-Sub connector located on the face plate of the amplifier. A second multipoint connector located on the amplifier face plate is used for serial communication, monitoring and control. This connector is used both during factory tests and at the system level by the customer .
RF Power Amplifiers Captive Screw Mounting Heatsink fins Figure HePA850 side view The alarms are mapped to front panel LED behavior, as indicated: - LED red =major alarm/reset/disable : the PA is not operational - LED green = the PA is operational = synch present, no alarm, PA ready to amplify The amplifier monitoring and control is also managed through a serial link and a customer specific protocol.
RF Power Amplifiers IC Statements 1.Quality Norms : The Testing of the equipment is carried out as the norms laid in IC standards. 2. Labeling : HePA850 model : RF100306 (NTQA50UA) when sold in Canada will have (a) The certification number, prefixed by the term "IC: ", i.e. IC: 2237F-RF100306 (b) The manufacturer's name, trade name or brand name, i.e. Andrew Corp (c) A model name or number, i.e. RF100306(NTQA50UA) (d) This device complies with RSS-131, RSS-102 of the IC Rules. 3.
