Military Patch Antennas
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Frequently asked questions about products in this category Military Patch Antennas
A patch antenna is a compact directional antenna consisting of a metal plate on a dielectric substrate. This design forms a directional radio signal within a specific sector of space. Due to their small size and stable characteristics, patch antennas are often used in FPV and radio communication systems.
A patch antenna transmits and receives signals via a metal plate that acts as an emitter. The radio wave propagates in front of the antenna, forming a directional beam. This allows the patch antenna to concentrate the signal in a specific direction.
Patch antennas are manufactured for specific frequencies. Most often, they operate in the 1.2 GHz, 2.4 GHz, or 5.8 GHz bands. These frequencies are used in FPV systems, radio communications, and some EW systems.
A patch antenna typically has a gain of approximately 6 to 12 dBi. The value depends on the plate size and operating frequency. The higher the gain of a patch antenna, the narrower the signal sector becomes.
A patch antenna forms a directional beam with a width of approximately 30–90 degrees. The exact angle depends on the antenna design. Such a sector allows for a stable signal in a specific direction.
A patch antenna can operate with circular or linear polarization. FPV systems often use RHCP or LHCP. For stable operation, the receiver and transmitter must have the same polarization.
Patch antennas are often used in FPV ground stations. They are suitable for receiving video signals from drones at medium and long distances. Patch antennas can also be used in some EW systems.
An omnidirectional antenna transmits a signal in all directions around itself. A patch antenna concentrates the signal in a specific sector. Because of this, a patch antenna can provide greater communication range in a chosen direction.
When choosing, it is important to consider the operating frequency, polarization type, and antenna gain. You also need to check the connector's compatibility with your equipment. A correctly selected patch antenna provides a stable signal in the desired sector.
Patch antennas can be purchased at the FlashArmy military equipment store. Among the variety of models for FPV systems, radio communications, and other equipment, you can choose the one that meets your requirements. An antenna is usually selected based on the required frequency, polarization type, and signal characteristics, depending on the task.