1. Small antennas in wireless communications;wong h luk k-m chan ch xue q so kk lai,2012
2. High gain 2x2 MIMO antenna for 5G Applications;shalini sah,2021
3. A Review of Various Multi-Frequency Antenna Design Techniques
4. Antenna Miniaturization Techniques;fallahpour,2018
5. circularly polarized antenna for rotated stair dielectric resonator;wang,2014