Icom IC-FR3000 Series Sales Handbook page 25

Connection Connection Connection Connection
EXAMPLE 1 : ISOLATOR CONNECTION EXAMPLE 1 : ISOLATOR CONNECTION EXAMPLE 1 : ISOLATOR CONNECTION EXAMPLE 1 : ISOLATOR CONNECTION
PA
EXAMPLE 2 : DUPLEXER CONNECTION EXAMPLE 2 : DUPLEXER CONNECTION EXAMPLE 2 : DUPLEXER CONNECTION EXAMPLE 2 : DUPLEXER CONNECTION
PA
RX
J1
EXAMPLE 2 : DUPLEXER AND ISOLATOR CONNECTION EXAMPLE 2 : DUPLEXER AND ISOLATOR CONNECTION EXAMPLE 2 : DUPLEXER AND ISOLATOR CONNECTION EXAMPLE 2 : DUPLEXER AND ISOLATOR CONNECTION
PA
RX
J1
What is a Duplexer?
A duplexer is what allows the antenna to be shared
between transmit and receive.
What is a Circulator/Isolator?
A Circulator is a 3-port ferrite device used to route
microwave signals from one port to another, Port 1->
Port 2, Port 2 -> Port 3, Port 3 -> Port 1.
An Isolator is basically a circulator with port 3
terminated. It becomes a 2 port device which
transmits a signal in port 1 and out port 2. Any
reflected energy or any signal entering port 2 will be
routed to port 3 where it is absorbed. Thus port 1 is
"isolated" from port 2.
Duplexer and Isolator Installation
(Reference only)
ISO
ISO
DUP
DUP
ISO : ISOLATOR DUP : DUPLEXER
Circulator
Port 1
Port 3
Isolator
Port 1
Port 2
Port 2
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