High frequency radio communication apparatus using the mixer and its integrated even harmonic filter

摘要

Simplifying the constitution of the terminal area with the occasional harmonic mixer and the filter, it makes miniaturization possible. The occasional harmonic mixer (21) with the high frequency band pass filter (23) with the transmission circuit (22) through, connecting, it forms the filter one somatotype occasional harmonic mixer. In order at that time, the occasional harmonic mixer (21) with the transmission circuit (22) with the connection (24) from the transmission circuit (22) the impedance which looked at side, to become abbreviation 0 vis-a-vis the frequency f of the local oscillation signal _{LO, the} transmission circuit (22) length is set. Therefore, vis-a-vis the frequency f _{LO which} is provided in the former occasional harmonic mixer railroad track length in order to give equivalent ground can delete the advanced open stub of approximately 1mm. In this way, it simplifies the terminal area with the occasional harmonic mixer and the high frequency band pass filter, it is possible to designate the circuit layout of the filter one somatotype occasional harmonic mixer very as the compact.