This study describes the design of a wideband, low‐profile shared aperture antenna operating at P‐band and Ku‐band. This antenna operates with dual‐linear polarisation in P‐band and single‐linear polarisation in Ku‐band. In this antenna design, it consists of one P‐band microstrip patch antenna and an 8 × 8 Ku‐band aperture‐coupled patch array. The antenna covers from 330 to 420 MHz in the P‐band and from 14.27 to 16.20 GHz in Ku‐band with |S11| better than − 10 dB, which translates to 24 and 13% bandwidth in P‐ and Ku‐band, respectively. The overall height of the antenna is about 80 mm, approximately 0.09λ at the lowest frequency. The cross polarisation is better than − 20 dB in the P‐band and − 26 dB in the Ku‐band. There is virtually no coupling between the P‐ and Ku‐band. The measured gain varies from 6.5 to 7.5 dBi in the P‐band and from 22.5 to 23.4 dBi in Ku‐band.
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Zhou et al. (2013) studied this question.