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Patent Number: |
7934190 |
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Case ID: |
0 |
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Patent Title:
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Multiple amplifier matching over lumped networks of arbitrary topology
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Status: |
ACTIVE |
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Status Date: |
11/30/2011 9:56:07 AM |
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Issue Date:
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4/26/2011 |
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Filed Date:
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9/25/2008 |
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Serial #:
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2/238,353 |
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Assignee Name:
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The United States of America as represented by the Secretary of the Navy
(Washington,
DC)
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Inventor(s):
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Allen, Jeffery C. , Schwartz, David F. |
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BACKGROUND
The multiple amplifier matching problem involves placing one or more amplifiers into a lumped network to maximize the transducer power gain, minimize the noise figure, and maintain stability. An optimally designed lumped network permits the
largest input signal to be stably transferred to the output.
Typically, amplifier matching is performed by the amplifier designer fixing a circuit topology, constraining the lumped element values, and undertaking a multi-objective optimization over the constrained element values. The difficulty with this
approach is that there are many lumped network topologies, forcing the amplifier designer to undertake a massive search to determine an optimal lumped network topology.
A need exists for a method that can be used by amplifier designers to, given multiple amplifiers, determine an optimal lumped network topology that maximizes gain, minimizes noise, and maintains stability.
SUMMARY OF SOME EMBODIMENTS
. . . . More |
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A method includes generating at least one matrix representing a two-port,
generating gain, noise, and stability functions of a system comprising
the two-port, a generator connected to one port of the two-port, the
generator having a generator reflectance, and a load connected to the
other port of the two-port, the load having a load reflectance, and
optimizing the gain, noise, and stability functions. The two-port
comprises a non-reactive multi-port modeled by an orthogonal matrix, and
at least one amplifier connected to the non-reactive multi-port. The
orthogonal matrix is parameterized using an exponential map of
skew-symmetric matrices having components restricted to an interval from
-.pi. to .pi.. The gain, noise, and stability functions are generated
using the generated matrix, the generator reflectance, and the load
reflectance, The gain, noise, and stability functions are parameterized
by the skew-symmetric matric . . . . More |
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What is claimed is:
1. A non-transitory computer readable storage medium having a method encoded thereon, the method represented by computer readable programming code, the method comprising the
steps of: generating at least one matrix representing a two-port, wherein the two-port comprises: a non-reactive multi-port modeled by an orthogonal matrix, wherein the orthogonal matrix is parameterized using an exponential map of skew-symmetric
matrices having components restricted to an interval from -.pi. to .pi., and at least one amplifier connected to the non-reactive multi-port; generating gain, noise, and stability functions of a system, wherein the system comprises: the two-port, a
generator connected to one port of the two-port, the generator having a generator reflectance, and a load connected to the other port of the two-port, the load having a load reflectance, wherein the gain, noise, and stability functions are generated
using the generated matrix, the generator reflect . . . . More |
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