| 摘要 |
A dual-band filter ( 10 ) is provided. The dual-band filter includes an input line ( 100 ), a first transmission line ( 140 ), a second transmission line ( 160 ), a third transmission line ( 180 ), and an output line ( 120 ). The input line is used for inputting electromagnetic signals. The first transmission line is electronically connected to the input line. The second transmission line is arranged parallel to the first transmission line. The third transmission line is arranged between, and parallel to, the first transmission line and the second transmission line. The output line for outputting electromagnetic signals, is arranged parallel to the input line, and is electronically connected to the second transmission line.
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