The invention discloses a compact type conformal PIFA array antenna working on a UHF
frequency band. The compact type conformal PIFA array antenna working on the UHF
frequency band is characterized by comprising a plurality of small-scale inverted-F-shaped antenna units, a horizontal
antenna array which is composed of the inverted-F-shaped antenna units, a
feed network and working frequency adjusting branches, the compact type conformal PIFA array antenna is printed on a flexible
dielectric slab, and finally the flexible
dielectric slab is bent and is arranged on the outer side face of a
dielectric cylinder in a conformal mode to form a conformal radiator so as to achieve omnidirectional
radiation. Repeated 90-degree bending operation of the inverted-F-shaped antenna units is adopted by the compact type conformal PIFA array antenna to achieve a low profile of the compact type conformal PIFA array antenna working on the UHF
frequency band, and the overall height of the compact type conformal PIFA array antenna working on the UHF frequency band is about 0.06
lambda, wherein the
lambda represents the air wave length. Due to the fact that the compact type conformal PIFA array antenna is arranged on the outer side face of the
dielectric cylinder in a conformal mode, the sectional area of the compact type conformal PIFA array antenna can be reduced, and the compact type conformal PIFA array antenna can be installed in a narrow space. Due to the fact that the advantages that the inverted-F-shaped antenna units are convenient to manufacture, high in accuracy and low in cost are made full use of by the compact type conformal PIFA array antenna,
miniaturization and the low profile of the compact type conformal PIFA array antenna working on the UHF frequency band are achieved, and high
gain and the good omnidirectional
radiation characteristic are achieved.