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Design of Miniaturized Microstrip Antenna for Smart Home Wireless Sensor

Three Miniaturized Microstrip antennas are proposed in this paper. In the first miniaturized antenna, the CSRR (Complementary Split Ring Resonator) is etched on the metal ground plate as the DGS (Defected Ground Structure), which reduces the area by 30.78% compared with the traditional rectangular antenna. The second antenna uses meander technology, and introduces non-radiation edge notches and two groups of slots on the radiation patch, which reduces the area by 34.11% compared with the traditional rectangular antenna. The third antenna combines DGS and meander technology, which reduces the area by 47.51% compared with rectangular antenna, and has better miniaturization effect. The antenna has a good resonant mode meeting the requirements of Wi-Fi band (2.40-2.4835 GHz) commonly used in smart home, and has a promising application prospect in the design of smart home wireless sensor nodes.