Directional patch antenna GPS
The directional patch antenna is designed to receive GPS signals and operates in the 1575.42/1602 MHz band. In combination with an amplifier, this active antenna achieves a gain of 22 dBi. With compact dimensions of 13.4 x 13.4 x 6.4 mm, it is designed for integration into space-saving devices such as navigation and tracking devices that receive satellite signals and can plan routes or track vehicle movements in real-time.
The GPS antenna is supplied with a 57 mm cable with a U.FL(f)connector.
What is a patch antenna?
A patch antenna is composed of a dielectric or semiconductor substrate and a conductive microstrip. It is produced similarly to printed circuits. The main disadvantages of these antennas are their narrow bandwidth, lower gain and limited power load bearing capacity. One of the possibilities to achieve better performance of this antenna is a variant with a lower (conductive) continuously plated layer. This improvement partially functions as a reflector, so by limiting the radiation from the bottom side we increase the directivity of the antenna and at the same time its gain in the desired direction. The efficiency of the antennas ranges roughly from 35 to 90 %. The operating frequency (of oscillation) ranges from hundreds of MHz to tens of GHz, generally not exceeding 30 GHz. It is used in mobile phones, RFID readers and anywhere where an antenna needs to be placed in a very small device. Some of the advantages are a relatively high efficiency and low impedance, miniature size and the possibility of mass production. The antennas are thin, lightweight and relatively easy to construct, and because they can withstand extreme conditions and are manufactured in any shape, they can be mounted on the outside of cars or aircraft. This type of directional antenna is also suitable for small single-storey office buildings, shops and many other indoor locations where a central access point is not available. The patch antenna can be also used as an external antenna to increase signal reception and for data transmission from wireless devices such as GPS systems.
Technical parameters can be found in the attached datasheet.