How does a PCB Antenna work?2.4G FPC Antenna is also a flexible circuit board. The PCB antenna has low cost, simple structure and good performance. The main material of 3G FPC Antenna is polyimide or polyester film, which is used to make a highly reliable printed circuit board. GSM FPC Antenna has the characteristics of high wiring density, light weight, thin thickness and good flexibility, and 4G FPC Antenna is light and thin, so 868MHZ FPC antenna is widely used in wireless communication devices such as Bluetooth, WiFi, and mobile phones.