The monopole antenna, also known as an upright antenna, is an antenna perpendicular to the ground or conductive plane. It has been widely used in long, medium and short wavelengths. Its basic structure is composed of upright oscillator and the ground. StrongFirst monopole antenna mainly includes the 433MHz antenna, LPWA with 868MHz, 915MHz and other frequency antennas and 2G/3G/4G antennas etc.