A composite high frequency component, comprising: a first high frequency
switch having a first common port and first, second, and third
communication ports, wherein: the first high frequency switch has a
transfer characteristic for passing signals between the first common port
and the first, second and third communication ports which are in the
frequency band of the first and second communication systems as a function
of at least one first control signal; a second high frequency switch
having a second common port and fourth and fifth communication ports,
wherein: the second high frequency switch has a transfer characteristic
for passing signals between the second common port and the fourth and
fifth communication ports which are in the frequency band of the third
communication system as a function of at least one second control signal;
a first filter having characteristic for passing signals in of the first
and second communication the first filter being coupled to the of the
first high frequency switch; a transfer the frequency band systems, one
end of first common port second filter having a transfer characteristic
for passing signals in the frequency band of the third communication
system, one end of the second filter being coupled to the second common
port of the second high frequency switch; and a diplexer having a third
common port and first and second input/output ports.