A 433MHz Transmitter Based on Injection-Locking and Frequency Multiplication

In recent years, the MICS band has become more and more versatile, and at the same time, the power consumption issue of the transmitter has been plaguing people. We designed a highly integrated 433 MHz MICS band transmitter which is based on cascaded multi-phase injection locking and frequency multiplication to enable low power operation. The transmitter is designed with the TSMC 180-nm CMOS process. The core area of the transmitter is only 0.0018 mm
²
. This structure consumes a total power of 0.58mW and outputs -28dBm power on 50 Ω load. It is fully integrated except for the crystal and the matching network.