Abstract
A 3–5GHz frequency-hopping (FH) transmitter using an impulse radio ultra-wideband (IR-UWB) signal is designed in a standard 65-nm CMOS technology. A delay-line-based architecture utilizing only static logic gates for pulse generation is employed to achieve low power consumption. The center frequency of the transmitted IR-UWB signal with the fixed bandwidth of 500MHz covers three channels in the low band of UWB spectrum and hops successively from one to another at a rate of 200MHz. Binary phase shift keying (BPSK) modulation schemes are exploited to modulate transmitted signals with further improvement in spectrum characteristics. By employing the FH technique, the energy consumption of the transmitter is 3.6pJ/bit at a data-rate of 200Mb/s with the FCC mask well complied.
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