Mutual Coupling Reduction between Finite Spaced Planar Antenna Elements Using Modified Ground Structure

Muhammad Shahzad Sadiq, Cunjun Ruan, Hamza Nawaz, M. Ali Babar Abbasi, Symeon Nikolaou
2020 Electronics  
In this paper, a modified ground structure capable of reducing mutual coupling to provide isolation between adjacent antenna elements is presented. The proposed modified ground structure is a combination of a strategically located ground slot, asymmetric partial ground and a substrate-integrated pin wall. The use of the modified ground structure causes a more than 28 dB (measured value) mutual coupling reduction. The modified ground structure has been optimized and validated with a finite
more » ... planar 2 × 1 antenna array operating at 4.16 GHz, intended for unmanned aerial vehicle radar altimeter applications. The patch antennas built with the MGS exhibit high gain (greater than 6 dBi throughout the operational band), along with inter-element coupling as low as −65 dB. Mutual coupling reduction at lower contours is beneficial for altimeter applications.
doi:10.3390/electronics10010019 fatcat:gw2gqbhs6bg6dmmdvndaxi7ezi