What is the function of the built-in ceramic antenna for the s Bluetooth sports headset?
Ceramic antenna is another miniaturized antenna suitable for Bluetooth devices. The types of ceramic antennas are divided into block-shaped ceramic antennas and multilayer ceramic antennas. The block-shaped antenna is to use high temperature to sinter the whole ceramic body at one time, and then print the metal part of the antenna on the surface of the ceramic PCB.
The firing of multilayer antennas by low-temperature co-firing. The multilayer ceramic PCB are laminated and aligned and then sintered at high temperature. Therefore, the metal conductor of the antenna can be printed on each ceramic dielectric layer according to the design needed, which can reduce the size of the antenna size and then can achieve the purpose of hiding the antenna. Since the dielectric constant of the ceramic is higher than other PCB, so using ceramic antennas can effectively reduce the size of the antenna, it is very good for Bluetooth sports headset application.
The material of the ceramic antenna is ceramic, and the weight is only 200g. Its frequency range is between 902MHz and 928MHz. In terms of dielectric loss, the ceramic medium has a smaller dielectric loss than the PCB, so it is in the low power consumption rate. The Bluetooth module is very suitable for it. The effect of the ceramic antenna is stronger than that of the on-board antenna. Generally, there are ANT access feet and ground feet, which are also very convenient to use.
The principle of ceramic antennas is divided into two parts: one is the transmitting antenna and the other is the receiving antenna.
- Porcelain antenna transmitting antenna uses an electrode called “antenna” to turn the high-frequency electric field formed between the antenna and the ground into electromagnetic waves, which can be emitted and propagated to a distance.
Ceramic antenna Receiving antenna uses an electrode called an “antenna” to induce electromagnetic waves from the air into an electric field, generate high-frequency signal voltage, and send it to the receiver for signal processing.
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