Impulse-based 4 Gbit/s radio link at 60 GHz

A 4 Gbit/s radio link using impulse-based on-off keying at 60 GHz is demonstrated. The input baseband signals are transferred to radio frequency wavelets through direct conversion, by switching a GaAs gated tunnel diode oscillator on and off. The wavelet generator drives an antenna directly without any buffer or power amplifier. The peak output power is - 11 dBm at a power consumption of 30 mW. The signals are detected with an energy detector and the link has a bit error rate < 10(-12) for distances shorter than 35 cm