High impedance ratio wideband transformer circuit
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United States of America Patent
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Apr 8, 1997
Grant Date -
N/A
app pub date -
Sep 14, 1995
filing date -
Sep 14, 1995
priority date (Note) -
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Abstract
A transformer circuit disclosed performs wideband impedance transformation (matching) and can be used for voltage step-up and step-down applications. The circuit disclosed is comprised of two transmission line transformers and two reactive impedances that compensate the circuit for impedance versus frequency. The circuit disclosed performs a very wideband impedance ratio of 1:9. The circuit may have different turns ratios for T1 and T2 and different values for Z1 and Z2 to accommodate rational, fractional and integer values of transformation up to an impedance ratio of 16:1. The addition of a balun to the output provides a balanced output.
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