VOLTAGE CONTROL OSCILLATOR

摘要

PURPOSE: A voltage controlled generator is provided to operate in a differential mode and a common mode by independently connecting a complementary active circuit element to both sides of a resonant unit. CONSTITUTION: A first oscillator comprises transistors(M5-M8) such as a complementary active element connected to both ends of a resonant unit(60) of a transformer base through an N-PMOS cross-connection structure. A second oscillator comprises transistors(M1-M4) such as a complementary active element connected to both ends of a resonant unit(60) of a transformer base through a gate coupling structure. A double band voltage controlled oscillator is formed by binding the first and second oscillators.