PA50 Amplifier Operation and Maintenance Manual

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1 Eclipse Series RF Technology October 00 Revision PA0 Amplifier Operation and Maintenance Manual This manual is produced by RF Technology Pty Ltd 0/ Leighton Place, Hornsby NSW 0 Australia Copyright 00 RF Technology

2 CONTENTS CONTENTS Contents Operating Instructions. Front Panel Indicators Internal Adjustments Test Points I/O Connections Circuit escription. river Stage. Output Stage. Low Pass Filter. Bias Supply. Reflectometer. Metering Circuits Specifications. Physical Configuration. Indicators and Test Points. Electrical Specifications.. Power Requirements A Engineers rawings 9 B Parts List 0 Page RF Technology PA0

3 OPERATING INSTRUCTIONS WARNING Changes or modifications not expressly approved by RF Technology could void your authority to operate this equipment. Specifications may vary from those given in this document in accordance with requirements of local authorities. RF Technology equipment is subject to continual improvement and RF Technology reserves the right to change performance and specification without further notice. Operating Instructions The PA0 is part of the Eclipse range of modular base station equipment. It is a power amplifier capable of delivering 0 Watts in the VHF frequency range. It is designed to complement the T0 transmitter, and mounts in a standard Eclipse sub-rack.. Front Panel Indicators PWR LE RFO LE Power LE indicates that the PA0 is connected to a C power source. RF Output LE indicates that the PA0 is being driven by the exciter and RF Output is available at the antenna socket. TEMP LE Temperature LE indicates that the output transistors are above 90 degrees. This is only an indication and not an alarm condition as the exciter monitors the PA0 temperature at all times in order to keep within safe operating limits. Internal Adjustments All internal adjustments are factory set and should not need to be changed under normal conditions. R R9 R0 R R C09 river bias adjustment O/P Q0 bias adjustment O/P Q00 bias adjustment Forward power meter adjustment Reverse power meter adjustment Reflectometer balance adjustment RF Technology PA0 Page

4 Test Points OPERATING INSTRUCTIONS Test Points These test points are provided on the PCB and the B9 front panel connector for use by maintenance personnel TP00 and TP0 TP0 and TP0 river drain current measurement. A multimeter placed across these pins will indicate volt for amp of Q0 drain current O/P stage drain current measurement. A multimeter placed across these pins will indicate volt for 0 amps of Q00 and Q0 drain current TP00 PA Temperature reading. volt indicates a temperature of 0 degrees. This reading deviates by 0mV per degree of change TP0 TP0 Reverse voltage output from the reflectometer Forward voltage output from the reflectometer B9 pin GN B9 pin O/P drain current B9 pin B9 pin Reverse voltage B9 pin +V B9 pin river drain current B9 pin B9 pin Forward voltage B9 pin 9 I/O Connections There are I/O connectors on the rear panel with the following functions pin connector C power and exciter logic interface Pin GN Pin 0 +V Pin ATA-IO Pin 9 CLK Pin 0 CS Pin VREFB Pin Forward Volts Pin Reverse Volts Pin Temperature BNC Connector: N Connector: RF Input from exciter approximately Watt RF Output to antenna, up to 0 Watts Page RF Technology PA0

5 CIRCUIT ESCRIPTION. river Stage Circuit escription The following descriptions should be read as an aid to understanding the block and schematic diagrams.. river Stage The function of the driver stage is to transform the RF input signal from the exciter to the appropriate levels and impedance required by the output stage. The RF input signal is applied to the high pass filter ( C, C0, C, C, C, L0 and L0 ). This filter suppresses any residual low frequency spurious that may be present at the exciter output. T00 is used to transform the nominal 0 ohm output from the exciter to match the input of Q0. A negative feedback network ( C0, R0, R, R, R, R, R9, L0 and R ) is used to achieve a reasonably flat gain across the frequency of operation and to match the drive level requirements of the PA0 to the output level provided by the exciter. C bias is applied to the gate of Q0 via R0 and R and is decoupled by C0 and C. The C feed for Q0 drain is decoupled by L00, C, C0, C00 and C. T0 is used for impedance matching between the driver and output stage and to provide a balanced feed for the push-pull output stage. Output Stage The output stage amplifies the 0 W from the driver to in excess of 0 W for final delivery into the low pass filter. Q00 and 0 are driven in push-pull configuration by the outputs of T0. L0, R, C and L0 R C form negative feedback paths in order to achieve a reasonably flat frequency response across the frequency of operation. T0 is used to provide the C feed via the centre tap in the primary winding to Q00 and Q0. T0 also combines the balanced output of the transistors into a single ended output as well as provide the necessary impedance transformation from the transistors into a nominal 0 ohms. A small C bias is applied to the gates of Q00 and Q0 via R, 9, and and decoupled by C0,, 0 and. The C feed to the transformer is decoupled by L0, L0, C0, 9, 0,, 0, and.. Low Pass Filter The low pass filter attenuates spurious emissions to less than dbc.. Bias Supply The function of the bias supplies is to provide a temperature compensated bias voltage to the gates of Q00 Q0 and Q0 for adjustment to their quiescent currents. U0 and R, R and R provide the bias voltages. U00 provides a decreasing output voltage with increasing temperature. The resistive dividers R, R9 and RF Technology PA0 Page

6 . Reflectometer CIRCUIT ESCRIPTION R, R0 and R0, R provide the bias voltage to the transistors so that quiescent current is maintained across the operating temperature range.. Reflectometer The reflectometer provides an indication of load mismatch. A00 is a current transformer with a single turn primary being passed through the centre of a toroid. The multiturn secondary has an output voltage that is proportional to the current flowing in the primary. The voltages appearing at the anodes of 0 and 0 are of equal amplitude and opposite phase. A sample of the line voltage is applied to the junction of the divider resistors R and R0. C09 is adjusted for equal amplitude with the transformer. Since the transformer has 0 degree phase shifted outputs the application of the line voltage will cause cancellation at 0 and addition at 0. This phase relationship will change when a mismatch occurs resulting in an increase in the voltage at 0. 0 and 0 rectify these voltages so that a C level proportional to the forward and reflected voltages are available for the metering circuits. L00 provides a C reference point for the diodes.. Metering Circuits These circuits are included so that the exciter can interrogate the PA and read all the vital operating levels. U0 is an A to converter with the following inputs: Reverse voltage Forward voltage Temperature C Input volts O/P drain current river drain current Q00 bias voltage Q0 bias voltage Model identification jumpers Forward and reverse voltages are supplied from the reflectometer outputs and factory set to the correct levels by R and R. U0 ( temperature sensor ) is mounted on the same pad as the source lead of Q0 to provide a temperature reading of the O/P transistor cases. C Power Input voltage is provided by a resistive divider (R and R). The O/P drain current is provided by measuring the small voltage drop across R and R. river drain current is provided by measuring the small voltage drop across R and R. The bias voltages are read directly from the bias supplies. The model identification is determined by the jumper settings of J0, 0 and 0. PA0A MHz J0 on, J0 and J0 off PA0B 0 0 MHz J0 on, J0 and J0 off PA0C 0 MHz J0 on, J0 and J0 off U0 and associated components provide a wire serial interface to allow the exciter to interrogate the A to converter. U00C is a comparator that switches the fan on Page RF Technology PA0

7 SPECIFICATIONS. Physical Configuration when the temperature rises above 0 degrees C. U0 is a comparator that switches the TEMP LE on when the temperature rises above 90 degrees C. Q0 samples the line output RF voltage to turn on the RFO LE. Specifications The PA0 is designed for use with the T0 exciter to provide 0 to 0 Watts output. Output power regulation is performed by the exciter as it continually monitors PA performance. The exciter also monitors important levels such as temperature reverse power and drain currents to keep them within operating limits.. Physical Configuration The PA0 is designed to fit into a 9 inch rack mounted frame. The installed height is RU or mm and the depth is 0mm The amplifier is mm wide. An extruded aluminium heatsink with vertical fins and an enclosed fan is used. The temperature rise can be as high as 0 degrees depending on output power.. Indicators and Test Points Power On Green LE RF Power Yellow LE Temperature degrees + Red LE Forward Power B9 pin and GN Reverse Power B9 pin and GN O/P rain Current B9 pins and river rain Current B9 pins and +V B9 pin GN B9 pin. Electrical Specifications.. Power Requirements Operating Voltage ) Current rain Polarity Frequency Range to 0VC ( available O/P power reduced below V Approx 0A at V and 00W O/P Negative Ground PA0A to MHz PA0B 0 to 0MHz PA0C to 0MHz RF Technology PA0 Page

8 .. Power Requirements SPECIFICATIONS Nominal Antenna Impedance: Output Power: Transmit uty Cycle: Spurious Emissions: 0 ohms 0 to 00 Watts 00W Continuous up to 0 degrees C ambient less than 0.uW Maximum Heatsink Temperature: 0 degrees C Mismatch Protection: Protected from damage by control from the exciter Connectors: Antenna connector - N type female on rear panel Power and exciter interface - B Female on rear panel RF Input - BNC female on rear panel Test connector - B9 female on front panel Page RF Technology PA0

9 A ENGINEERING RAWINGS A Engineering rawings. Block iagram. Main PCB Schematics ( sheets ) RF Technology PA0 Page 9

10 B PA0 PARTS LIST B Parts List Main PCB Assembly Ref. escription Part Number A00 Transformer Reflectometer /PA0/REFL C Capacitor 0% V XR 0 /0/00N C Capacitor 0% V XR 0 /0/00N C Capacitor 0% V XR 0 /0/00N C Capacitor 0% V XR 0 /0/00N C Capacitor 0% V XR 0 /0/00N C Capacitor 0% V XR 0 /0/00N C Capacitor % V NPO 0 /0/0N0 C Capacitor 0-0uF -0V low ESR electrolytic mm pitch /00L/0U C00 Capacitor 0% V XR 0 /0/00N C0 Capacitor 0% V XR 0 /0/00N C0 Capacitor 0% V XR 0 /0/00N C0 Capacitor 0% V XR 0 /0/00N C0 Capacitor 0% V XR 0 /0/00N C0 Capacitor 0% V XR 0 /0/00N C0 Capacitor 0% V XR 0 /0/00N C0 Capacitor 0% V XR 0 /0/00N C0 Capacitor % V NPO 0 /0/0N0 C09 Capacitor % V NPO 0 /0/0N0 C0 Capacitor % V NPO 0 /0/0N0 C Capacitor % V NPO 0 /0/0N0 C Capacitor % V NPO 0 /0/0N0 C Capacitor % V NPO 0 /0/0N0 C Capacitor % V NPO 0 /0/0N0 C Capacitor % V NPO 0 /0/0N0 C Capacitor % V NPO 0 /0/0N0 C Capacitor % V NPO 0 /0/0N0 C Capacitor 0uF +0/-0% V electrolytic.mm pitch /00L/00U C9 Capacitor 0uF +0/-0% V electrolytic.mm pitch /00L/00U C0 Capacitor 0nF 0% 0V NPO /N/00N C Capacitor 0nF 0% 0V NPO /N/00N C Capacitor 0nF 0% 0V NPO /N/00N C Capacitor 0nF 0% 0V NPO /N/00N C Capacitor 0nF 0% 0V NPO /N/00N C Capacitor 0nF 0% 0V NPO /N/00N C Capacitor 0nF 0% 0V NPO /N/00N C Capacitor 0nF 0% 0V NPO /N/00N C9 Capacitor 0nF 0% 0V NPO /N/00N C00 Capacitor 0% V XR 0 /0/00N C0 Capacitor 0% V XR 0 /0/00N C0 Capacitor 0% V XR 0 /0/00N Page 0 RF Technology PA0

11 B PA0 PARTS LIST Ref. escription Part Number C0 Capacitor 0% V XR 0 /0/00N C0 Capacitor 0uF +0/-0% V electrolytic.mm pitch /00L/00U C0 Capacitor 0uF +0/-0% V electrolytic.mm pitch /00L/00U C0 Capacitor 0% V XR 0 /0/00N C0 Capacitor pf % V NPO 0 /00/0P C0 Capacitor pf % V NPO 0 /00/0P C09 Capacitor - variable 9/00/00P C0 Capacitor pf +/- 0.pF 00V silver mica 0 /00/0P C Capacitor 0% V XR 0 /0/00N C Capacitor 0% V XR 0 /0/00N C Capacitor % V NPO 0 /0/0N0 C Capacitor % V NPO 0 /0/0N0 C Capacitor pf % V NPO 0 /00/0P C Capacitor pf % V NPO 0 /00/0P C9 Capacitor % V NPO 0 /0/0N0 C0 Capacitor % V NPO 0 /0/0N0 C Capacitor % V NPO 0 /0/0N0 C Capacitor % V NPO 0 /0/0N0 00 iode BAV99 SOT- /00/AV99 0 iode BAV99 SOT- /00/AV99 0 iode BAV99 SOT- /00/AV99 0 iode BAV99 SOT- /00/AV99 00 iode BAV99 SOT- /00/AV99 0 iode BAV99 SOT- /00/AV99 0 iode ZRC00F0.09V reference % 00ppm SOT- 9/VREF/000 0 iode SM00 Std recovery 0V!A SMA package /SMA/00 0 iode BAS SOT- /000B/AS 0 iode BAT SOT- /00/00 0 iode BAT SOT- /00/00 0 iode BZXC0 0V zener 0mW 0% SOT- /00/C0V J Connector.mm QC Vertical Tab /0/000 J Connector.mm QC Vertical Tab /0/000 J Connector 0 way female /0/000 J0 Connector way male /0/000 J0 Connector way male locking /0/000 J0 Connector way male /0/000 J0 Connector way male /0/000 J0 Connector way male /0/000 L Inductor uh 0% >00mA 00 /0/P0 L00 Inductor Ferrite beads xx S /0/000 L0 Inductor Ferrite beads xx S /0/000 L0 Inductor turns on 0mm toroid /PA0/000 L0 Inductor nh turns CW.mm I /0/ L0 Inductor nh turns CW.mm I /0/ L0 Inductor nh 9 turns CW.mm I /0/09 L00 Inductor uh 0% >00mA /0/P0 Q00 Transistor MRF RF Power mosfet /00/MRF RF Technology PA0 Page

12 Page B PA0 PARTS LIST Ref. escription Part Number Q0 Transistor MRF RF Power mosfet /00/MRF Q0 Transistor MRF RF Power mosfet /00/MRF Q00 Transistor MMBT90 NPN SOT- /00/90 Q0 Transistor MMBT90 NPN SOT- /00/90 Q0 Transistor NT0 n-ch mosfet SOT- /00/0 R Resistor K % 0 /0/0K R Resistor K % 0 /0/0K R Resistor K % 00ppm 00 //0K R Resistor K % 00ppm 00 //0K R00 Resistor 0R % 00ppm 00 //0R R0 Resistor 0R % 00ppm 00 //0R R0 Resistor 0R % 00ppm 00 //0R R0 Resistor 0R % 00ppm 00 //0R R0 Resistor K precision 0.% 0ppm 00 /P/0K R0 Resistor K precision 0.% 0ppm 00 /P/0K R0 Resistor K precision 0.% 0ppm 00 /P/0K R0 Resistor K precision 0.% 0ppm 00 /P/0K R0 Resistor K precision 0.% 0ppm 00 /P/0K R09 Resistor K precision 0.% 0ppm 00 /P/0K R0 Resistor K precision 0.% 0ppm 00 /P/0K R Resistor K precision 0.% 0ppm 00 /P/0K R Resistor R 0% W axial wirewound /0/00R R Resistor 0R0 0W T0-0 /T0/0R0 R Resistor 00K % 00ppm 00 //00K R Resistor 00K % 00ppm 00 //00K R Resistor 00K % 00ppm 00 //00K R Resistor 00K % 00ppm 00 //00K R Not Fitted R9 Resistor K % W 00ppm //0K R0 Resistor 00R % W 00ppm //000 R Resistor 00R % W 00ppm //000 R Not Fitted R Resistor K % W 00ppm //0K R Resistor 0R % W 00ppm //00 R Resistor 0R % W 00ppm //00 R Resistor 00R 0W T0-0 /T0/000 R Resistor 00R 0W T0-0 /T0/000 R Resistor 0R0 0W T0-0 /T0/0R0 R9 Resistor 0R % W 00ppm //00 R0 Resistor 0R % W 00ppm //00 R Resistor 0R % W 00ppm //00 R Resistor 0R % W 00ppm //00 R Resistor 0R % W 00ppm //00 R Resistor K precision 0.% 0ppm 00 /P/0K R Resistor K precision 0.% 0ppm 00 /P/0K R Resistor K precision 0.% 0ppm 00 /P/0K R Resistor K precision 0.% 0ppm 00 /P/0K R Resistor R 0% W axial wirewound /0/0R R00 Resistor K % 00ppm 00 //0K R0 Resistor K % 00ppm 00 //0K RF Technology PA0

13 B PA0 PARTS LIST Ref. escription Part Number R0 Resistor K % 0 /0/0K R0 Resistor 9K % 00ppm 00 //09K R0 Resistor 9K % 00ppm 00 //09K R0 Resistor K % 00ppm 00 //0K R09 Resistor K % 00ppm 00 //0K R0 Resistor 0K % 00ppm 00 //00K R Resistor 0K % 00ppm 00 //00K R Resistor 0K % 00ppm 00 //00K R Resistor 0K % 00ppm 00 //00K R Resistor 0K % 00ppm 00 //00K R Resistor 0K % 00ppm 00 //00K R Resistor 00K % 00ppm 00 //00K R Resistor 00K % 00ppm 00 //00K R Resistor R % W 00ppm //00 R9 Resistor K % 00ppm 00 //0K0 R Resistor K % 00ppm 00 //0K R Resistor 00R % 00ppm 00 //00R R Resistor 0R % 00ppm 00 //0R R Resistor 0R % 00ppm 00 //0R R Resistor 0R % 00ppm 00 //0R R Resistor R % W 00ppm //00 R Resistor 00K variable turn mm gull wing /SMV/00K R Resistor 00K variable turn mm gull wing /SMV/00K R Resistor R % W 00ppm //00 R Resistor K % 0 /0/0K R Resistor K % 0 /0/0K R Resistor K variable turn mm gull wing /SMV/00K R9 Resistor K variable turn mm gull wing /SMV/00K R0 Resistor K variable turn mm gull wing /SMV/00K R Resistor M % 00ppm 00 //0M0 R Resistor 0K % 00ppm 00 //00K R Resistor K % 00ppm 00 //0K T00 Transformer : Unbalanced /PA0/000 T0 Transformer : Balun /PA0/000 T0 Transformer :9 RF Output /PA0/000 U00 IC LM Quad op-amp SO- 9/000L/M U00 IC LM Quad op-amp SO- 9/000L/M U0 IC LM Quad op-amp SO- 9/000L/M U0 IC HC buffer SO- /00/C U0 IC TLC bit A/ converter SO-0 9/00TL/C U0 IC LM Temperature sensor SOT- 9/000/LM U0 IC LM0CT Regulator TO-0 /00/CT Frequency ependant Parts PA0A ( MHz ) C9 Capacitor pf % 00V Silver Mica 0 /00/0P C0 Capacitor pf % 00V Silver Mica 0 /00/0P C Capacitor pf % 00V Silver Mica 0 /00/0P C Capacitor pf +/- 0.pF 00V Silver Mica 0 /00/0P C Capacitor pf % 00V Silver Mica 0 /00/0P RF Technology PA0 Page

14 B PA0 PARTS LIST Ref. escription Part Number C Capacitor pf % 00V Silver Mica 0 /00/0P C Capacitor pf % 00V Silver Mica 0 /00/0P C Capacitor % 00V Silver Mica 0 /00/00P C Capacitor pf % 00V Silver Mica 0 /00/0P C Not Fitted C9 Capacitor % 00V Silver Mica 0 /00/00P C0 Capacitor pf % 00V Silver Mica 0 /00/0P C Not Fitted C Capacitor % 00V Silver Mica 0 /00/00P C Capacitor pf % 00V Silver Mica 0 /00/0P C Capacitor pf +/- 0.pF 00V Silver Mica 0 /00/0P C Capacitor % 00V Silver Mica 0 /00/00P C Capacitor 0pF +/- 0.pF 00V Silver Mica 0 /00/00P C Capacitor pf % 00V Silver Mica 0 /00/0P C9 Capacitor pf % 00V Silver Mica 0 /00/0P C Capacitor 0pF % V NPO 0 /00/0P C0 Capacitor 0pF % V NPO 0 /00/0P C Capacitor % V NPO 0 /00/00P C Capacitor 0pF % V NPO 0 /00/0P C Capacitor 0pF % V NPO 0 /00/0P C000 Capacitor 0pF % 00V Silver Mica 0 /00/0P C00 Not Fitted L Inductor nh turns CW.mm I /0/0 L Inductor nh 9 turns CW.mm I /0/09 L Inductor nh 0 turns CW.mm I /0/0 L Inductor nh 0 turns CW.mm I /0/0 L Inductor nh 9 turns CW.mm I /0/09 L0 Inductor 0nH Coilcraft Maxispring /MAXI/0N L0 Inductor nh Coilcraft Maxispring /MAXI/N Frequency ependant Parts PA0B ( 0 0 MHz ) C9 Capacitor pf % 00V Silver Mica 0 /00/0P C0 Capacitor pf % 00V Silver Mica 0 /00/0P C Capacitor pf % 00V Silver Mica 0 /00/0P C Capacitor pf +/- 0.pF 00V Silver Mica 0 /00/0P C Capacitor pf % 00V Silver Mica 0 /00/0P C Capacitor pf % 00V Silver Mica 0 /00/0P C Capacitor pf % 00V Silver Mica 0 /00/0P C Capacitor % 00V Silver Mica 0 /00/00P C Capacitor pf % 00V Silver Mica 0 /00/0P C Capacitor pf +/- 0.pF 00V Silver Mica 0 /00/0P C9 Capacitor pf % 00V Silver Mica 0 /00/0P C0 Capacitor pf % 00V Silver Mica 0 /00/0P C Capacitor pf +/- 0.pF 00V Silver Mica 0 /00/0P C Capacitor % 00V Silver Mica 0 /00/00P C Capacitor pf % 00V Silver Mica 0 /00/0P C Not Fitted C Capacitor pf % 00V Silver Mica 0 /00/0P C Capacitor 0pF +/- 0.pF 00V Silver Mica 0 /00/00P Page RF Technology PA0

15 B PA0 PARTS LIST Ref. escription Part Number C Capacitor % 00V Silver Mica 0 /00/00P C9 Capacitor % 00V Silver Mica 0 /00/00P C Capacitor pf % V NPO 0 /00/0P C0 Capacitor 0pF % V NPO 0 /00/0P C Capacitor % V NPO 0 /00/00P C Capacitor % V NPO 0 /00/00P C Capacitor 0pF % V NPO 0 /00/0P C000 Capacitor 0pF % 00V Silver Mica 0 /00/0P C00 Not Fitted L Inductor 0nH turns CW.mm I /0/0 L Inductor nh turns CW.mm I /0/0 L Inductor nh turns CW.mm I /0/0 L Inductor nh turns CW.mm I /0/0 L Inductor nh turns CW.mm I /0/0 L0 Inductor 0nH Coilcraft Maxispring /MAXI/0N L0 Inductor 9nH Coilcraft Maxispring /MAXI/9N Frequency ependant Parts PA0C ( 0 MHz ) C9 Capacitor pf % 00V Silver Mica 0 /00/0P C0 Capacitor pf % 00V Silver Mica 0 /00/0P C Capacitor pf % 00V Silver Mica 0 /00/0P C Capacitor p9f +/- 0.pF 00V Silver Mica 0 /00/0P9 C Capacitor pf % 00V Silver Mica 0 /00/0P C Not Fitted C Capacitor pf % 00V Silver Mica 0 /00/0P C Capacitor pf % 00V Silver Mica 0 /00/0P C Capacitor pf +/- 0.pF 00V Silver Mica 0 /00/0P C Capacitor pf % 00V Silver Mica 0 /00/0P C9 Capacitor % 00V Silver Mica 0 /00/00P C0 Not Fitted C Not Fitted C Capacitor % 00V Silver Mica 0 /00/00P C Capacitor pf % 00V Silver Mica 0 /00/0P C Not Fitted C Capacitor pf % 00V Silver Mica 0 /00/0P C Capacitor 9pF +/- 0.pF 00V Silver Mica 0 /00/09P C Capacitor pf % 00V Silver Mica 0 /00/0P C9 Capacitor pf % 00V Silver Mica 0 /00/0P C Capacitor pf % V NPO 0 /00/0P C0 Capacitor 0pF % V NPO 0 /00/0P C Capacitor pf % V NPO 0 /00/0P C Capacitor pf % V NPO 0 /00/0P C Capacitor 0pF % V NPO 0 /00/0P C000 Capacitor % 00V Silver Mica 0 /00/00P C00 Not Fitted L Inductor nh turns CW.mm I /0/0 L Inductor 0nH turns CW.mm I /0/0 L Inductor nh turns CW.mm I /0/0 L Inductor nh turns CW.mm I /0/0 RF Technology PA0 Page

16 B PA0 PARTS LIST Ref. escription Part Number L Inductor 0nH turns CW.mm I /0/0 L0 Inductor nh Coilcraft Maxispring /MAXI/N L0 Inductor 0nH Coilcraft Maxispring /MAXI/0N Front Panel PCB R Resistor 00R % 0.W axial /00/000 iode LE Yellow RA /00/LEY iode LE Red RA /00/LER iode LE Green RA /00/LEG J Connector 0 way header /0/000 J Connector B9/F RA PCB mount /0/009F Page RF Technology PA0

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18 river Stage O/P Stage Low Pass Filter Reflectometer RF Input RF Input Q00 rive Q00 rive Unfiltered RF Unfiltered RF Filtered RF Filtered RF RF Output RF Ouput Q0 rive river rain Current river Bias Q0 rive Q00 Bias Q0 Bias O/P rain current Fwd Volts Rev Volts C C +V Bias Supply Metering B A J? B Temperature Reverse Volts CS ATA-IO CLK Forward Volts VREFB river Bias Q00 Bias Q0 Bias Temperature Compensation Q00 Bias voltmeter Q0 Bias voltmeter Rev Volts O/P rain current Fwd Volts Temperature Compensation Q00 Bias voltmeter Q0 Bias voltmeter river rain Current Temperature Reverse Volts CS ATA-IO CLK Forward Volts VREFB Title Size PA0 Block iagram Number Revision B A A ate: -Feb-00 Sheet of File: C:\Program Files\esign Explorer 99 SE\rft\PA0.ddb rawn By:

19 J0 CON ATA-IO CLK CS Pwr-Fwd Pwr-Rev Temperature Measurement Interface R.K R.K R 00R Q00 90 R 0K U0 9 0 R0 0K HC 0 ZRC00F0 C R U0 REF+ REF- O I CLK CS EOC GN R TLC VCC AIN0 AIN AIN AIN AIN AIN AIN AIN AIN AIN9 AIN0 R0 0K R0 0K R 0K 0 9 S0 S S S0 S S Pwr-Fwd Pwr-Rev PwrSense CurrSense rvsense BSense BSense S[0..] Pwr-Fwd Pwr-Rev S0 S S J0 J0 J0 Identification Jumpers LINK LINK LINK C U00A C pf LM U00B C pf LM TP00 TEST-POINT 00 BAV99 0 BAV99 Vo V+ R K R K U0 LM R 00K R 00K U0A LM V+ V- U0B U00E LM VREFB C R0 9K R0 0K C0 R 00K R C9 U00 LM 00K Bias Voltage Temperature Compensation R9 K R0 K R0 K +V R R J0 CON Q0 NT0 C 0 SM00 C0 R9 K U00C LM 0 9 R 0K C GN R0 9K C0 R K TP0 TP0 TEST-POINT TEST-POINT Forward & Reflected Power Meter LM U0C LM +F V+ U0E LM 0 9 C B + C0 0uF R TempLE.K R.K Fan Switch and Temperature Indicator Q0 MMBT90 R09.K R00 K U0 LM C C R0 K L00 uh C09-0 BAT R C0 pf R0 C0 pf 0 BAT V- B +F U0 LM0CT Vin GN Vout C + C0 0uF C0 RF-FILT RF-UNFILT RFOLE R0.K 0 BAS C0 pf R A00 F/R_COAX R J00 COAX-PA K R0 R 0K BIAS-OP Q0 R M A K R K R9 R 0K R 0K BIAS-OP BIAS-RV FMMTC 0 BZXC0 R 0K C0 Rev No. ECO No. escription of Change Title PA0 00W Power Amplifier A Bias Voltage Adjustments RF Output Indicator -Feb-00 00:0: Sheet of C:\Program Files\esign Explorer 99 SE\rft\PA0.ddb - HFPA_Support.Sch Size: Print ate: File: A Rev. Release ate: Number: Originator: Revision: RF Technology Pty Ltd Unit 0, Leighton Place Hornsby, NSW 0 Australia

20 rain Current Meter TP00 +V TP0 +V rvsense VREFB rv-curr 00 BAV99 R00 0R R0 K R K U00 LM R K R0 K C0 C09 TEST-POINT R0 K R09 K TP0 TEST-POINT R R L00 BEAS R R0 C00 + C 0uF U00E LM +F V- V+ CurrSense VREFB O/P-Curr 0 BAV99 VREFB R0 0R rain Current Meter R0 K R K U00C LM R K 9 0 R0 K C0 C TEST-POINT R0 K R K TP0 TEST-POINT R 0R0 L0 BEAS C0 R 0R0 + C9 0uF BSense 0 BAV99 R0 0R U00A LM R 00K R 00K BIAS-OP C C0 BIAS-OP BIAS-OP R9 K R NF C C0 C C0 L0 C BSense U00B 0 BAV99 R0 0R LM Bias Voltage Measurement Interface R 00K R 00K BIAS-OP T0 :-BALUN C nf C nf R 00R L0 nh C nf Q00 MRF T0 RF-TFORMER-9: TOROI-0MM RF-UNFILT RF-UNFILT C B J00 COAX-PA C C C0 C C R0 0R R 0R C0 nf C nf C nf R 00R L0 nh C nf Q0 MRF Output Stage C nf C C0 B L0 L0 R 0R R 0R R K R NF Note: C000 is soldered accross the transformer primary pads onto the PCB Note: C00 is soldered directly onto the transformer front PCB R 0R R9 0R BIAS-OP BIAS-OP C C0 T00 :-UNBAL L0 nh R 0R C9 Q0 MRF A BIAS-RV BIAS-RV nf R0 00R R 00R river Stage Rev No. ECO No. escription of Change Title PA0 00W Power Amplifier A C C0 Size: A Number: Print ate: -Feb-00 00:0: Rev. Release ate: Revision: Sheet of Originator: RF Technology Pty Ltd Unit 0, Leighton Place Hornsby, NSW 0 Australia File: C:\Program Files\esign Explorer 99 SE\rft\PA0.ddb - HFPA_Main.Sch

21 C J 9 0 +V LE Power LE C CON0 LE RF Output LE LE Over Temperature LE B J 9 R 00 RevPwr FwdPwr O/P_Curr rv_curr +V B B9 A A Title Size A Number Revision ate: -Feb-00 Sheet of File: C:\Program Files\esign Explorer 99 SE\rft\PA0.ddb rawn By:

22 +F L +V J uh C C SPAE + C 0uF J bypass caps +F SPAE C U C C C U U U C U C Amplifier HFPA_Main.sch Support HFPA_Support.sch +V J C O/P-Curr rv-curr BIAS-RV BIAS-OP BIAS-OP VREFB CurrSense rvsense BSense BSense BIAS-RV BIAS-OP BIAS-OP VREFB CurrSense rvsense BSense BSense BIAS-RV BIAS-OP BIAS-OP VREFB CurrSense rvsense BSense BSense Pwr-Rev Pwr-Fwd RFOLE TempLE Pwr-Rev Pwr-Fwd O/P-Curr rv-curr PWRLE RFOLE TempLE 9 0 CON0 C RF-UNFILT RF-UNFILT L C9 L C0 L C L C L RF-UNFILT RF-FILT PWRSense R.K C C C C +F R K R.K +V C C C C C9 C0 C C C C C C9 B A Ref L L L L L C C C9 C C C C0 C C9 C0 C C C C C C C C C C9 L0 L0 C C0 C C C C000 C00 PA0A (-MHz) nh nh nh nh nh pf pf pf pf pf pf NF pf pf NF pf pf pf 0pF pf pf 0nH nh 0pF 0pF 0pF 0pF 0pF NF PA0B (0-0MHz) 0nH nh nh nh nh pf pf pf pf pf pf pf pf pf pf pf pf pf NF pf 0pF 0nH 9nH pf 0pF 0pF 0pF NF PA0C (-0MHz) nh 0nH nh nh 0nH pf NF pf pf pf pf pf pf NF pf NF pf p9f NF pf 9pF pf pf nh 0nH pf 0pF pf pf 0pF 0pF RF Output Low Pass Filter SH SHIEL_LPF Rev No. ECO No. escription of Change PA0 00W Power Amplifier -Feb-00 00:00: Sheet of C:\Program Files\esign Explorer 99 SE\rft\PA0.ddb - HFPwrAmp.prj Size: Title Print ate: File: A Rev. Release ate: Number: R.K Originator: Revision: RF Technology Pty Ltd Unit 0, Leighton Place Hornsby, NSW 0 Australia B A

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