With the rapid development of wireless sensing technology, 433 MHz wireless communication devices have been more widely used in portable devices, vehicle-mounted terminals, intelligent locks and other fields. As an important part of wireless communication equipment, antenna is a key component that affects the overall performance of the communication system.
Domestic and foreign scholars have been exploring the 433 MHz printed antenna with high gain and miniaturization for many years. However, there are two main trends in the design of 433 MHz printed antenna by previous scholars: one is to sacrifice size to ensure high gain, such as the structural scheme in literature; The other is to sacrifice gain to ensure size miniaturization, such as the scheme in reference.
