Appeal No. 2000-1941
Application 08/567,128
Representative claim 2 is reproduced as follows:
2. A high frequency switch having first to fourth ports
and enabling connection of each of the first and second ports to
either of the third and fourth ports, comprising:
a first diode coupled between the first and third ports;
a second diode coupled between the first and fourth
ports;
the first and second diodes each having first and second
polarity terminals, the first and second diodes being directly
connected to each other at a first common connection, the first
common connection being coupled to the first port whereby the
first and second diodes are connected so that the same polarity
terminal of each of the first and second diodes is coupled to the
first port;
a first coupling capacitor connected between said first
port and said first common connection; a second coupling
capacitor connected between said third port and said first diode
and a third coupling capacitor connected between said fourth port
and said second diode;
and further comprising:
a third diode coupled between the second and third ports;
a fourth diode coupled between the second and fourth
ports;
the third and fourth diodes each having first and second
polarity terminals, the third and fourth diodes being directly
connected to each other at a second common connection, the second
common connection being connected to the second port whereby the
third and fourth diodes are connected so that the same polarity
terminal of each of the third and fourth diodes, which is the
same polarity terminal as the terminals of the first and second
diodes connected to the first port, is connected to the second
port, and
2
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