Appeal No. 96-1203
Application 08/298,721
final rejection was filed on September 5, 1995 and was entered
by the examiner. This amendment cancelled claims 13-16.
The disclosed invention pertains to a complementary
heterojunction amplifier particularly designed for use as a
radio frequency amplifier. The amplifier of the invention has
a P-channel heterojunction transistor and an N-channel
heterojunction transistor connected together. The gate width
of the P-channel transistor is selected so that the P-channel
transistor has the same transconductance as the N-channel
transistor. The gate length of the N-channel transistor has a
value so that the input impedance to the P-channel transistor is
approximately equal to the input impedance of the N-channel
transistor.
Representative claim 1 is reproduced as follows:
1. A complementary heterojunction amplifier comprising:
a P-channel heterojunction transistor having a first gate
width, a first transconductance, and a first input impedance; and
an N-channel heterojunction transistor having a first gate
length, a second transconductance, and a second input impedance
wherein the first gate width has a value so that the first
transconductance and the second transconductance are
approximately equal and wherein the first gate length has a value
so that the first input impedance is approximately equal to the
second input impedance.
The examiner relies on the following reference:
Redfern 5,329,184 July 12, 1994
2
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