Abstract: In order to improve the working bandwidth of the millimeter wave frequency tripler under low power consumption, IHP130 nm SiGe BiCMOS technology is used to propose a millimeter-wave wide lock range using double-ended injection (DEI) technology injection-locked frequency tripler. The DEI injection-locked frequency tripler consists of a harmonic generator and an oscillator with a tail current source, and the third-harmonic injection is improved in the form of a doubleended injection oscillator that generates a differential signal from the balun. The intensity results in a triple frequency signal with a locked range and a good phase noise performance in the E and W equal output ranges. According to the simulation results, when the operating voltage of the DEI injection locking frequency tripler is 1.2 V and the input signal power is 0 dBm, its locking range reaches 57-105 GHz. Under the same operating voltage and input signal power, when the input frequency is 32 GHz, the first, second and fourth harmonic suppression are all greater than 20 dBc, the power consumption is 9.1 mW.