| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a compact bandpass filter with a balanced/unbalanced converting function which simplifies circuit configuration, effectively reduces the member size and improves the frequency response. <P>SOLUTION: Regarding an unbalanced/balanced bandpass filter, a single different-phase capacitive bandpass filter is first connected in parallel with one induced bandpass filter, to constitute a single novel unbalanced/balanced bandpass filter circuit, and continuingly, an unbalanced/balanced bandpass filter is realized that is reduced in the size induced (ICL) and capacitive (CCL) coupled lines by using three coupled lines. <P>COPYRIGHT: (C)2010,JPO&INPIT |
