Tait TM9100 - Block Diagram of the Transmitter Circuitry

66 Circuit Descriptions TM9100 Service Manual
© Tait Electronics Limited August 2005
Figure 3.2 Block diagram of the transmitter circuitry
RF
Connector
Receiver
LPF
Directional
Coupler
PA
Forward Power BufferAmplifier
Power Control
PIN
Switch
Driver Exciter
Bias
Limiter
Shaper
and Level
Shifter
Shaper
and Level
Shifter
Crowbar
Shaping
Filter
Tempera-
ture
Sensor
BufferAmplifier
TX RX RF
Thermal Coupling
OR Gate
Switch
TX INH
+9V0TX +13V8 BATT DIGTX INH DIG SYN EN SYN LOCK SYNTX LO
Power
Supply
Digital
Board
Frequency
Synthesizer
CDCTX DRV BIAS CDCTX FIN BIAS1 CDCTX FIN BIAS2 CDCTX PWR CTL TXTEMP TX FWD PWR TX REV PWR
CODEC
and
Audio
Interface
AGND
Signal Types:
RF analog clock digital asynchronous serial data synchronous serial data
Transmitter
Reverse Power BufferAmplifier (40W/50W only)