Nowadays, navigation antenna is more and more widely used in our life, such as mobile phones, electronic watches, cars, navigation equipment, etc. For the purpose of application, navigation antenna can also be divided into many kinds, such as built-in antenna, GPS antenna, external antenna, time service antenna, etc; Recently, some friends asked about the difference between the pcb antenna and the ceramic antenna. Many people don't know it. Let's talk about it:
Ceramic antenna
Difference 1: different definitions
The ceramic antenna uses GPS satellites to achieve navigation and positioning, and the main task of the user's receiver is to extract the pseudo-random noise code and data code in the satellite signal to further calculate the position, speed and time (PVT) and other navigation information of the receiver carrier. It can be divided into blocky ceramic antenna and multilayer ceramic antenna.
The PCB antenna refers to the part on the PCB used for wireless reception and transmission, which is generally set on the Bluetooth or wireless transmission module. Its wiring should generally have an empty area to prevent the signal from being scattered and affecting the reception effect; Make omnidirectional antenna directional.
Difference 2: different characteristics
In terms of dielectric constant, ceramic antenna is higher than pcb antenna, so using ceramic antenna can effectively reduce the size of antenna. In terms of dielectric loss, ceramic dielectric is also smaller than the dielectric loss of pcb circuit board, so it is very suitable for use in low power consumption bluetooth modules. The ceramic antenna is generally equivalent in size to 1210 packages, and its effect is better than that of on-board antenna. During the design of the pcb antenna, the surrounding area should be clear. There should be no metal objects. The metal components should be reliably grounded. Special attention should be paid not to copper coating.