Hilbert fractal antenna array for ultra-high-frequency detection of partial discharge

The invention discloses a Hilbert fractal antenna array for ultra-high-frequency detection of partial discharge. The Hilbert fractal antenna array comprises a plurality of antenna units and a feed network, wherein each antenna unit adopts a laminated structure and comprises three layers of conductor patches and two layers of dielectric substrates; the conductor patches comprise a radiant conductor patch, a parasitic conductor patch and an auxiliary conductor patch; the conductor patches are designed through improving three-order Hilbert fractal curves, and each conductor patch comprises a main radiation arm and a parasitic arm; and the feed network is designed according to a Wilkinson power divider and arranged at the back of the antenna array. The antenna array provided by the utility model has the advantages of small size, broad frequency band and high gain, and can meet the requirements for on-line monitoring and ultra-high-frequency detection of partial discharge of a transformer.