| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a bans-pass filter for differential signal suitable for a device transmitting a differential signal and having a wide pass band. <P>SOLUTION: Lines 1, 2 and 3, 4 are provided, respectively, on two surfaces P1 and P2 of the inner layer of a dielectric 9. Two lines are arranged symmetrically to the same objective surface C and the length of each line is equal to a quarter of the wavelength at the central frequency of a working band. 5 and 6 are the I/O terminals of the lines 1 and 2, and 7 and 8 are the I/O terminals of the lines 3 and 4. The I/O terminal has an open end on the opposite side. When a differential signal is inputted to the terminals 5 and 6, a differential output appears at the terminals 7 and 8. This device operates as a band-pass filter. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
