| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a high speed, high frequency multichannel transmission line substrate which can be reduced in size, and to realize a high speed optical communication module employing it. <P>SOLUTION: The multichannel transmission line substrate is provided, between a first dielectric layer 21 and a second dielectric layer 22, with transmission lines from a transmission line 1a for transmitting a first data signal through a transmission line 4a for transmitting a 32th data signal. The multichannel transmission line substrate is provided, between a second dielectric layer 22 and a third dielectric layer 23, with transmission lines from a transmission line 1b for transmitting a first data signal of reverse phase to that of the transmission line 1a through a transmission line 4b for transmitting a 32th data signal of reverse phase to that of the transmission line 4a. A first ground conductor 31 is provided on the backside of the first dielectric layer 21 and a second ground conductor 32 is provided on the third dielectric layer 23. They are used entirely as ground. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
