OMIC PLLIC impedance matching circuit and the tuner (Impedance Matching Circuit for OMIC / PLLIC of Tuner)

摘要

The subject innovation is effective mutual series consisting of a second resistor and a grounded second capacitor By the parallel connection to make the impedance matching in the low and high frequency bands may be made as appropriate drift of PLLIC between OMIC output terminal and the first resistor of the tuner It relates to an impedance matching circuit of the OMIC and PLLIC the tuner is improved, OMIC output terminal and PLLIC connected in series to achieve the impedance matching between the input stage the first resistor and the first capacitor tuner OMIC and PLLIC made, including the in the impedance matching circuit, because it comprises a second capacitor ground and a second resistor connected in parallel between the OMIC output terminal and the first resistor, connected in series with the second resistance, in the low frequency band in a decrease in the impedance Bring stylized mitigate the reduction of the signal power, the high-frequency band impedance again To increase the efficiency improvement by the drift of PLLIC by a strong field has the beneficial effect that reliability of the product is further improved.