| 摘要 |
IMPEDANCE MATCHING NETWORK An impedance matching network circuit of either a T, or Pi-type circuit which minimizes impedance change at the input of the matching network as frequency and/or the load impedance change. This is accomplished in T and Pi-type networks by using a fixed value capacitor or inductance at either the input or output of the network instead of the commonly used variable capacitor or inductance. Further, a switching device can be employed in the T or Pi circuit to selectively reverse the positions of the variable inductance and variable capacitance relative to the input and load sides of the T or Pi circuit.
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