| 摘要 |
A low-pass filter comprises input and output transmission lines, a high impedance, series transmission line coupling the input and output transmission lines, a first meandered transmission line having one or more pairs of coupled transmission lines and one or more transition transmission lines connecting respective pairs of coupled transmission lines together, wherein one of the coupled transmission lines is connected to the input transmission line, and a second meandered transmission line having one or more pairs of coupled transmission lines and one or more transition transmission lines connecting respective pairs of coupled transmission lines together, wherein one of the coupled transmission lines is connected to the output transmission line. A high-pass filter is similar to the low-pass filter, except it has a pair of series coupled transmission lines in place of the series transmission line. The transmission lines are formed on a dielectric subtrate.
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