Combined GSM/GPS antenna
Omnidirectional combined antenna suitable for GSM/GPS signal receiving. The antenna functions in the bands of 800/900/1800/1900/1575.42 MHz. In combination with amplifier its gain is around 30 dBi. It is suitable for use in cars and other means of transport. Here it is used for navigation and tracking systems, electronic books and other devices. Two RG174 / U cables with a length of 3 m are attached to the antenna, which are terminated with SMA (m) and FME (f) connectors.
Connector specifications SMA:
These are high-frequency connectors with screw connection mechanism. The characteristic impedance of the connector is 50 Ohm and the operating frequency range up to 18 GHz. There are two types of SMA connectors, namely SMA and RP-SMA. Most of the current cellular routers are equipped with SMA connectors for connecting Wi-Fi / 2G / 3G / LTE / GPS antennas terminated by proticates. It is also used as a standard connector in RF measuring technology. They are characterized by high reliability, durability, high mechanical stability and optimal electrical properties.
Connector specifications FME:
FME coaxial connectors are characterized by high reliability and mechanical stability. The characteristic impedance of the connector is 50 Ohm and the operating frequency ranges up to 2 GHz. Temperature range is -65 °C to +155 °C. Thanks to their compact size and long longevity, the FME connectors are used in the field of mobile communications as well as for GSM antennas. They are suitable for installation in vehicles as well.
Cable specifications RG174 / U:
The cable labeled RG174 / U is a much cheaper variant of a coaxial cable that is compatible with connectors applicable to a cable diameter of 2.8 mm. It is mainly used for the frequency range 0 - 1 GHz, it can also be used for higher frequencies, but at the cost of higher attenuation – see the attached attenuation table below. The characteristic impedance of the cable is 50 Ω. The reduction factor is fixed at 0.66. The operating temperature range is -20 to 80 ° C.
It is most often used for creating cable adaptors with connectors such as BNC / FAKRA / FME / MCX / MMCX / N / SMA / SMB / SMP / TNC and others. It is ideal for short and bending stressed connections in measuring and telecommunications technology, for GPS / GSM / WLAN antennas, antenna leads etc.
Technical parameters can be found in the attached datasheet.