Elenos ETG300 - Transformer Version; Radio Frequency Section; Driver

Use and maintenance manual
Page 48
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E-Mail: support@elenos.com
4. GENERAL DESCRIPTION
1
2 3
E-ATG10-98-1.1
+
+
C8
C3
R13
C30
C23
C12
R5
L7
L8
Q2
C5 R14
C16
C17
C19
L11
L6
L4
R8
C20
L10
C25
C24
R18
R6
R15
R7
R2 R3
C13
C1
R12
R16
L1
C26 C22
C27 C21
L9
R19
L3
C11
R4
C15
C14
C6
R1
P1
R10
R11
Q1
C2
C9
L2
R9
U1
1
2
3
4.4.2.2.
Transformer power
supply
Supplies a variable voltage from +20V to +50V with voltage and current protection.
Uses traditional technology to facilitate replacement of faulty parts.
The power supply also features thermal protection and both input and output filters in
order to minimise interference.
Connections:
(Only for the transformer version)
- 1 via cable 5 to 1 (J1) of the mother board
- 2 via cable 18 to 3 of the RF modules
- 3 via cable 19 to 1 (J1) of the mother board
4.5.
Radiofrequency
section
The driver comprises an input stage of about 10mW and supplies a maximum
output power of 15W.
It is built using a mix of technologies and subdivided into three main amplifying
stages.
The first stage is a “MMIC” type “ERA5”.
The second stage is a MOS BLF404.
The third stage is a MOS BLF244.
The output of the driver is connected to the input splitter.
Connections:
- 1 via coaxial cable 10 to 3 (J8 RF OUT) of the mother board
- 2 via cable 13 to 1 (CN1) of the services power supply (auxiliary)
- 3 via coaxial cable 14 to 1 of the input splitter (Splitter IN)
4.5.1.
Driver
This comprises a low power output stage (driver) which, via a splitter, supplies the
power to the two final power stages.
The power output from the modules supplies a coupler (or output adder) which
concentrates all the power to the input of the low-pass filter.
The measurement probe which is located on the final part of the low-pass filter,
reads the values of direct and reflected power for the CPU.