Name
Title | ||
|---|---|---|
A 433-MHz Wireless Burst-Chirp Modulation Transmitter with Adaptive Duty-Cycle Control and Precharge Mechanism |
Abstract | ||
|---|---|---|
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 mm
<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup>
. 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%. |
Year | DOI | Venue |
|---|---|---|
2022 | 10.1109/ESSCIRC55480.2022.9911427 | ESSCIRC 2022- IEEE 48th European Solid State Circuits Conference (ESSCIRC) |
Keywords | DocType | ISBN |
burst-chirp modulation,CMOS,duty-cycle control loop,power amplifier,power-efficient,transmitter | Conference | 978-1-6654-8495-4 |
Citations | PageRank | References |
0 | 0.34 | 3 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Jing-Siang Chen | 1 | 0 | 0.34 |
| Chun-Ting Chang | 2 | 0 | 0.34 |
| Yu-Te Liao | 3 | 0 | 0.68 |