一、Features & Descriptions
The ceramic block antenna module (also known as ceramic antenna module | dielectric antenna module or satellite positioning antenna module) is a component or subsystem with specific functions that combines a ceramic block antenna with a feed network, matching circuits, and in some cases, integrates the transmitting and receiving front-end components. Its core function is to enable electronic devices to efficiently transmit and receive radio wave signals. Vehicle antennas can be designed to operate in single or multiple frequencies, and the products can cover all frequency bands of the GPS/GLONASS/BDS/GALILEO systems.
The ceramic block antenna module sacrifices a certain degree of bandwidth and incurs a small increase in cost in exchange for valuable internal space and stable RF performance. It has the advantages of small size, high gain, good directionality, high precision, low noise, stable performance, good consistency, high integration, convenient design, strong anti-interference ability, and adaptability to complex environments. However, it also has the disadvantages of narrow bandwidth, long customization cycle, relatively high sample production cost, and sensitivity to design and layout.
二、Model & Parameters
| Part No | Frequency（MHz）
| Gain（dB） | Current（mA）max |
| GPS L1 | BD2 B1 | BD2 B3 | GLONASS L1 | 0 | 15 | 25 |
| XMB1268AT4/2 |
|
| ● |
| ○ | ○ | ○ | 13 |
| XMB1561AT4/2 |
| ● |
|
| ○ | ○ | ○ | 13 |
| XMB1568AT4/2 | ● | ● |
|
| ○ | ○ | ○ | 13 |
XMB1575AT4/2
| ● |
|
|
| ○ | ○ | ○ | 13 |
| XMB1590AT4/2 | ● |
|
| ● | ○ | ○ | ○ | 13 |
| XMB1602AT4/2 |
|
|
| ● | ○ | ○ | ○ | 13 |
| XMA1568A | ● | ● |
|
| ○ |
| ○ | 13 |
| XMA1575A | ● |
|
|
| ○ |
| ○ | 13 |
| XMA1590A | ● |
|
| ● | ○ |
| ○ | 13 |
Notice: 1、● Fixed value，○ choosable ；2、The antenna size ranges from 9 * 9 mm to 25 * 25 mm； 3、Antenna XMB is an internal antenna module, while XMA is an external antenna module.； 4、Acceptable for customer customization
三、Notes & Applications
The ceramic block antenna module is a device widely used in the field of wireless communication for miniaturization and high performance. It is widely applied in various satellite navigation systems such as GPS, GLONASS, BDS, and Galileo, as well as in vehicle navigation, PAD, and other signal reception and satellite communication fields, becoming the preferred solution for high-precision positioning and miniature wireless devices. During installation, it should be kept away from metal objects and noise interference sources; otherwise, the performance will be greatly reduced. This series of products is a highly customized product and can be customized according to user requirements. All frequency bands of the four systems (GPS, GLONASS, BDS, and Galileo) can be customized.
