Appeal No. 2000-1941
Application 08/567,128
a fourth coupling capacitor connected between said
second port and said second common connection of the third and
fourth diodes, a fifth coupling capacitor connected between the
third port and the third diode and a sixth coupling capacitor
connected between the fourth port and the fourth diode;
a resistance element coupled to said first common
connection of said first and second diodes and said second common
connection of said third and fourth diodes, the resistance
element being coupled to a first terminal which is isolated from
the first and second common connections by the resistance
element, a first potential being applied to said first terminal,
said first potential comprising one of a positive voltage, an
opposite negative voltage and a ground potential, the switch
further comprising a second terminal coupled to a terminal of
said first diode coupled to the third port, a third terminal
coupled to a terminal of said second diode coupled to the fourth
port, a fourth terminal connected to a terminal of said third
diode coupled to the third port and a fifth terminal connected to
a terminal of said fourth diode coupled to the fourth port, one
of the first potential and ground potential being coupled to a
first one of said second through fifth terminals, a remaining one
of said first potential and ground potential not applied to said
first one of said second through fifth terminals being applied to
the remaining ones of the second to fifth terminals thereby
coupling the first port to the third port or the fourth port and
the second port to the third port or the fourth port, only a
ground potential and a selected one of two opposite potentials
being applied to said first through fifth terminals to actuate
said switch.
The examiner relies on the following references:
Concelman 3,374,364 Mar. 19, 1968
Ertel 3,475,700 Oct. 28, 1969
Nelson 5,170,139 Dec. 08, 1992
Chigodo et al. (Chigodo) 5,507,011 Apr. 09, 1996
(filed Dec. 21, 1993)
Kato et al. (Kato) 5,642,083 June 24, 1997
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