The paper describes the design and simulation of an antenna that will be used in an extremely difficult environment, inside jet engines. The antenna enables wireless sensor network application in an environment that has never been tested before. Due to the extreme limitations, the antenna has to be ultra-thin, but still working. In the paper, the antenna is simulated and then measured in both
... [Show full abstract] anechoic and reverberation chamber. Simulated results agree well with the measured values. The radiation efficiency of the antenna is -13 dB and is not much affected when placed in metallic environment.