| Title |
A 262 MHz Narrow Band RF Transceiver for Korean M-Bus Smart Metering Service |
| Authors |
(Dong Wuk Park) ; (Ki Ryun Byeon) ; (Gi Sung Lee) ; (Tae Hee Lim) ; (Kyoung Hwan Jo) ; (Tae Hyoun Oh) ; (Hyung Chul Park) ; (Yun Seong Eo) |
| DOI |
https://doi.org/10.5573/JSTS.2024.24.3.199 |
| Keywords |
NB-IoT; RF transceiver; Korean M-Bus; high power transmitter; low sensitivity |
| Abstract |
In this paper, a 262 MHz NB-IoT RF transceiver IC for Korean M-Bus smart metering service is presented. To mitigate the DC noise and 1/f noise near the narrow signal band and prevent SNR degradation caused by adjacent channel interference, low IF receiver with 4th order poly-phase filter is employed. The prototype is fabricated using the 0.18 μm CMOS process and has a size of 3.3 mm x 3.1 mm. It consumes 41.4/37.8 mW in transmit and receive modes, respectively. The measured results show that the maximum Tx power and OIP3 are +15.4/24 dBm and the receiver sensitivity is -105.4 dBm for PER 10-1 and 50-kbps GFSK modulation with 56 dBc ACR. The measured performance can provide the several-km communication distance for the smart monitoring sensors. |