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access icon free Ultra-low power low-complexity 3–7.5 GHz IR-UWB transmitter with spectrum tunability

© The Institution of Engineering and Technology
Received 04/09/2019, Accepted 04/02/2020, Revised 30/12/2019, Published 07/02/2020

An impulse radio ultra-wideband (IR-UWB) transmitter (TX) consuming ultra-low power is presented. The low-complexity topology features control of the power spectral density (PSD) and central frequency for a broad range of applications. The PSD and frequency adjustment are accomplished by employing a tunable pulse generator and an adjustable driver. The IR-UWB TX suitable for on–off keying coding is fabricated in a low-cost 180 nm UMC CMOS technology and occupies the total die area of 0.63 mm2. The measurement results show the transmitter output swing of 320 mVpp (peak-to-peak amplitude) with the pulse duration of 0.6 ns, and the spectrum covering the frequency range from 3 to 7.5 GHz. The total DC power consumption is 1 mW resulting in energy consumption of 5 pJ/pulse at 200 MHz data rate.

Inspec keywords: driver circuits; CMOS integrated circuits; radio transmitters; low-power electronics; pulse generators; ultra wideband communication; power consumption

Other keywords: spectrum tunability; low-complexity topology; frequency 3.0 GHz to 7.5 GHz; tunable pulse generator; on–off keying coding; bandwidth 200 MHz; DC power consumption; low-cost UMC CMOS technology; power 1.0 mW; time 0.6 ns; power spectral density; impulse radio ultra-wideband; size 180.0 nm; IR-UWB transmitter; ultra-low power low-complexity

Subjects: Telecommunication systems (energy utilisation); Radio links and equipment; CMOS integrated circuits; Electrical/electronic equipment (energy utilisation); Power electronics, supply and supervisory circuits

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