TY - GEN
T1 - A 433-MHz Wireless Burst-Chirp Modulation Transmitter with Adaptive Duty-Cycle Control and Precharge Mechanism
AU - Chen, Jing Siang
AU - Chang, Chun Ting
AU - Liao, Yu Te
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - This paper presents an energy-efficient 433 MHz wireless transmitter with burst-chirp modulation. To compromise the design trade-offs between output power and power consumption, the transmitter (TX) adopts a duty-cycle controlled class-E power amplifier (PA), whose switching duty-cycle ratio is less than 50%. Through this method, the impedance transformation ratio at the output of the PA is reduced, thus improving efficiency. Furthermore, a digital controller directly modulates the oscillator, generating chirp pulses. Moreover, the precharge mechanism is proposed to improve settling time, allowing short-pulse data transmission time. The TX IC is fabricated using 180-nm CMOS technology and occupies an active area of 1.73 mm2. The design achieves 8.71/Mbit normalized system efficiency, while the output power is -1.18 dBm at a 0.8-V supply, and the maximum system efficiency is 45%.
AB - This paper presents an energy-efficient 433 MHz wireless transmitter with burst-chirp modulation. To compromise the design trade-offs between output power and power consumption, the transmitter (TX) adopts a duty-cycle controlled class-E power amplifier (PA), whose switching duty-cycle ratio is less than 50%. Through this method, the impedance transformation ratio at the output of the PA is reduced, thus improving efficiency. Furthermore, a digital controller directly modulates the oscillator, generating chirp pulses. Moreover, the precharge mechanism is proposed to improve settling time, allowing short-pulse data transmission time. The TX IC is fabricated using 180-nm CMOS technology and occupies an active area of 1.73 mm2. The design achieves 8.71/Mbit normalized system efficiency, while the output power is -1.18 dBm at a 0.8-V supply, and the maximum system efficiency is 45%.
KW - burst-chirp modulation
KW - CMOS
KW - duty-cycle control loop
KW - power amplifier
KW - power-efficient
KW - transmitter
UR - http://www.scopus.com/inward/record.url?scp=85141461389&partnerID=8YFLogxK
U2 - 10.1109/ESSCIRC55480.2022.9911427
DO - 10.1109/ESSCIRC55480.2022.9911427
M3 - Conference contribution
AN - SCOPUS:85141461389
T3 - ESSCIRC 2022 - IEEE 48th European Solid State Circuits Conference, Proceedings
SP - 313
EP - 316
BT - ESSCIRC 2022 - IEEE 48th European Solid State Circuits Conference, Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 48th IEEE European Solid State Circuits Conference, ESSCIRC 2022
Y2 - 19 September 2022 through 22 September 2022
ER -