An integrated amplifier for an active car-radio antenna

An integrated amplifier for a very short active car-radio antenna (l=30 cm) for the 100 kHz-6 MHz range is presented. A JFET input stage, together with a low input impedance realized by overall feedback, yields excellent noise and intermodulation performance, and allows easy input protection. Field strengths as high as 8 V/cm can be handled without significant cross modulation.