High-sensitivity and high-mobility compact DVB-T receiver for in-car entertainment

A compact DVB-T receiver with better than -94 dBm sensitivity for in-car usage is presented in this work. Dual tuners are included in the receiver to reduce multi-path effects as well as realize the diversity technique. A robust audio/video interface (AVIO) is defined to accommodate different kinds of in-car displays with a variety of A/V specs. In addition, a protection circuit is proposed to provide the convenience that either active antennas or passive antennas can be plugged in the same antenna sockets. Field trials proved that the receiver works perfectly when the car is running over 180 Km/hr.