To meet the requirements of multi-point and multi-parameter signal transmission in the limited installation space of the rotating parts test equipment for aeroengines, a six-module antenna based on a wireless telemetry system was developed. The design of the transmitting and receiving modules was made based on microstrip antenna technique to achieve the miniaturization of the device. The antenna model after packaging was established in the simulation software, and the influences of the thickness of the packaging glue, the dielectric constant of the material, and the tangent of the loss angle on the reflection coefficient (S₁₁) and transmission coefficient (S₂₁) of the antenna feeding port were analyzed. According to the simulation results, the design parameters were optimized, and the six-module antenna was developed and its performance was tested. The results show that the working frequency range of the antenna is 1.3 ~ 1.7 GHz, and the working bandwidth is not less than 40 MHz, which meets the signal transmission design requirements. Low-speed rotation tests were conducted under the conditions that the installation distances between the rotor and stator antennas were 8 mm and 10 mm, respectively, and high-speed rotation tests were conducted under the conditions of a rotational speed of 20 000 r / min and an ambient temperature of 80 ℃. The data packet loss rate of the system was less than 1% in both cases. The developed six-module antenna can reliably and efficiently transmit data from 60 measurement points and multiple types of data, providing strong support for the performance testing of rotating components such as compressors and turbines in aeroengines.