RECEIVER WITH STRIPLINE FILTER AND STRIPLINE FILTER

摘要

In a stripline filter (40) a stripline resonator (42) and a stripline resonator (44) are mutually coupled. In order to be able to influence the type of coupling (inductive, capacitive or a mixture thereof) the distance between the stripline resonators (40, 42) changes over the length of the stripline resonators (40, 42). If the stripline resonators are shorted at the end where the distance between them has a minimum value the coupling is substantially inductive. If the stripline resonators (40, 42) is open or capacitively loaded at the end where the distance has a minimum value, the coupling is substantially capacitive.