Evaluation of Electromagnetic Interference Between UWB System and Wireless LAN Using a GTEM Cell

We propose the method of the interference evaluation between the UWB and the wireless LAN by using the GTEM cell that can test the receiver with the antenna built-in type in the paper. We show that the GTEM cell can be used in the frequency band of DS-UWB by the evaluation of the frequency response. The interference evaluation was conducted between wireless LAN IEEE 802.11 a and DS-UWB. As a result, even when the UWB signal is smaller than the receiver noise of wireless LAN, the throughput characteristics deteriorate than those in a case of the noninterference. Moreover, the signal of the DS -UWB was nearly equivalent to the AWGN in a case of the throughput variation of 64QAM Finally, we evaluated the separation distances in regulation limits of FCC and Japan.