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| Description | ||||||||||
| 60W Linear RF Amplifier Board 2.3-2.4 GHz 18dB | ||||||||||
| This
is a 60W linear amplifier
board as removed from a very
slightly used Spectrian power
amplifier which is optimized
for 2.30-2.35GHz but is also
useful up to 2.4GHz. Required
supply voltage is 24-26Vdc @
about 17A. Input drive
required for 60W output power
is less than 1W, Typ .75W.
Power gain @ 60W is 18dB+
(typ. 20dB. Saturated power is
close to 80W. Circuit board is
on an integral .062"
solid copper heat spreader.
Both the board upper surface
and the heat spreader surface
are heavy gold plated. Board
needs to be mounted on
heat-sink using Silicon grease
and 7ea. 4-40 screws in
existing holes. RF input and
outputs are 50 ohm strip-line
and will butt up to a standard
SMA or N launch connector.
Good quality SMA connectors
are rated to 400W @ 2GHz and
work very well for this amp.
The XFR286 Lateral Mosfets
used on this board can handle
a 10:1 VSWR @ full power so
isolators are not required.
Board dimensions are 2.25" x 5.9". Weight
is 6 ounces. DC connector
pin-out. 1, Temperature output
= 10MV/ degree F. 2, PTT =
+12V To enable all 3 power
FETs. 3, Drain current monitor
for Q1. 1volt out/amp of drain
current. 4, Drain current
monitor for Q2. 1volt out/amp
of drain current. 5, Ground.
6-10 are no connection.
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