EnglishVHF antennas are signal transceivers designed specifically for the Very High Frequency (VHF) band, operating in the 30-300MHz frequency range. They are primarily used for short-to-medium-range wireless communication and broadcasting, and are key components in maritime, aviation, and public safety fields.
Key Parameters
Frequency Range: Standard VHF band 30-300MHz, subdivided into commonly used civilian bands (e.g., maritime 156-174MHz, broadcast 87-108MHz).
Input Impedance: Mainstream 50Ω (for communication equipment) or 75Ω (for television/broadcast equipment) to ensure signal transmission matching.
Polarization: Primarily vertical polarization (e.g., vehicle-mounted whip antennas) and horizontal polarization (e.g., television Yagi antennas) to adapt to different propagation scenarios.
Gain: Typically 2-8dBi; directional VHF antennas (e.g., Yagi antennas) offer higher gain, suitable for long-distance point-to-point communication.
Common Types: Omnidirectional antennas (e.g., whip antennas), directional antennas (e.g., Yagi antennas), and folded dipole antennas to adapt to different coverage requirements.
