A GPS L1 SMD Passive Antenna refers to a specific type of antenna designed for receiving GPS signals, particularly those in the L1 frequency band, which is commonly used for civilian GPS applications. Below is an explanation of its key features: 1. GPS L1 Band
The L1 band refers to the frequency used by GPS satellites for civilian applications. The L1 frequency is 1575.42 MHz, which is the main signal transmitted by the GPS satellites. The GPS L1 signal is primarily used for positioning, navigation, and timing (PNT) services.
2. SMD (Surface-Mounted Device)
SMD refers to the construction type of the antenna, which is designed to be mounted directly onto the surface of a printed circuit board (PCB). SMD antennas are compact, lightweight, and suitable for integration into small, portable devices or embedded systems. Unlike traditional antennas with leads or connectors, SMD antennas can be soldered directly onto a PCB for a more streamlined, space-efficient design.
3. Passive Antenna
A passive antenna does not require an external power supply or amplification for receiving signals. It only collects and transmits the radio signals it receives from the GPS satellites to a connected receiver. Passive antennas are typically more energy-efficient and simpler to design, but they often require external amplification or a GPS receiver with a low-noise amplifier (LNA) to ensure that the weak signals from the GPS satellites are strong enough for accurate positioning.
