EMC improvement in multi-radio interfering UWB receiver

This paper presents an optimization method for the problem that multi-radio interferes ultra-wideband (UWB) receiver. First, the noise curves every radio interferes the UWB receiver will be obtained by means of simulation. Then, by placing these noise curves in a same chart, and taking the bigger value at every frequency point, the total system noise curve will be achieved. Next, The frequency bands, in which the receiver will be interfered potentially, will be determined by the total system noise curve and the noise threshold curve, and will be further determined by the radio which these interference mainly come from. Last, the targeted optimization could be carried out in three aspects: emission of the transmitter, antenna isolation and noise threshold of receiver. The optimization method has been applied in many practical engineering projects. After the adoption of this method, the project duration could be shorten to 1/3 of the original.