| 摘要 |
A filter diplexer (133) is provided for matching a filter (132) to a mixer (134) upconverting an intermediate frequency signal to an output signal by mixing the intermediate frequency signal with a local oscillator (152). The filter (132) filters the intermediate frequency before applying it to the mixer (134). A diplexer (133) is provided between the filter (132) and the mixer (134) for matching the impedance of the filter (132) to that of the mixer (134). The diplexer (133) includes an inductor (302) connecting the filter (132) to the mixer (134) and a capacitor (306) and a resistor (308) in series in shunt configuration with the inductor (302). |
