Null intermediate frequency mobile telephone receiver image frequency rejection mixer circuit having phase quadrature divider mixer input connected and mixers/frequency quadrature divider signal delivering/first mixer output providing.

摘要

The image frequency rejection mixer circuit has a phase quadrature divider (30) with an input connected to the mixer circuit and two outputs delivering signals in phase and quadrature two simple mixers (31,32). There is a phase quadrature frequency divider (33) having two inputs connected to the mixer outputs and providing a first mixer circuit output (F0).