Miniaturized Multiband Metamaterial Antennas With Dual-Band Isolation Enhancement

We present electrically small, multi-band, metamaterial-inspired antennas with adequate radiation characteristics and isolation enhancement. The antenna element consists of a complementary split-ring resonator (CSRR) embedded in small monopole that has size λ/8 × λ/10 at the lowest frequency band, while rectangular patches are placed underneath it to further improve performance. operates 2.4-2.5/2.9-4.8/5.1-6.5 GHz bands. Moreover, we propose systematic, metamaterial-based approach order between two these closely spaced elements highest proposed techniques reduce coupling by up 29 dB without increasing structure. In particular, enhancement band interest is remarkably wideband. cable effect, which common concern during measurements antennas, examined as well. not only but also densely packed can be easily integrated modern, compact communication devices advanced functionality. Simulations along experimental results validate effectiveness our design.