Appeal No. 2001-0817
Application No. 09/048,876
signal, the second amplifier is coupled to the first circulator
port and the bandpass filter is located between the two
amplifiers.
Claim 1 is illustrative of the claimed invention, and it
reads as follows:
1. A radio frequency (RF) transceiver comprising:
a circulator including first, second and third
circulator ports, that circulates power from the first
circulator port to the second circulator port to the third
circulator port and then to the first circulator port;
first and second amplifiers and a bandpass filter
therebetween, the first amplifier being coupled to a
transmit signal and the second amplifier being coupled to
the first circulator port;
an antenna that is coupled to the second circulator
port; and
a duplexer that is coupled to the third circulator port
and that generates a receive signal.
The references relied on by the examiner are:
Green, Jr. (Green) 5,701,595 Dec. 23, 1997
Yamada et al. (Yamada) 5,768,690 Jun. 16, 1998
(filed Oct. 10, 1995)
Fukuden 5,805,023 Sep. 8, 1998
(filed Oct. 31, 1995)
Claims 1, 4 through 8, 10, 13 and 14 stand rejected under
35 U.S.C. § 103(a) as being unpatentable over Green in view of
Fukuden.
2
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