Phase-synchronization in UWB receivers with sampling phase detectors

Ultra wideband (UWB) radio offers low power consumption, low spectral density, high immunity against interferences and other benefits, but for synchronous transmission of data the transmitter and the receiver clocks have to be synchronized. One possibility to realize this is the use of a broadband mixer which is difficult to fabricate and hence expensive. An alternative is the use of a sampling phase detector which is not only cheaper, but also yields a simpler circuitry. In this paper the two methods are compared and the advantages of synchronization with a sampling phase detector are shown.