A 2.88Gb/s digital hopping UWB transceiver

A digital hopping UWB transceiver that expands the baseband by three times over that of previous technologies to obtain a data rate of 2.88 Gb/s is described. A frequency-hopping polyphase filter (FH-PPF) that switches the passband of an RX chain within a switching time of 5 ns allows compatibility with present 480 Mb/s or lower data rates, while requiring the use of only one LO frequency, as opposed to the need for three in previous technologies. An 800 MHz baseband has been achieved through use of a passive LPF and a highpass feedback VGA. EVM was measured to be below -26 dB up to 2.88 Gb/s. RX power dissipation of 156 mW was achieved with 90 nm CMOS technology.