ANT-DB1-LP-RM-01-N

ANT-DB1-LP-RM-01-N Data Sheet Product Description The Antenna Factor Log Periodic antenna is designed for long-distance directional communication over a wide range of frequencies. The DB1-LP antenna provides gain and directivity comparable to a Yagi, but in a much smaller overall form factor, and over a considerably wider range of frequencies. Constructed of UV stabilized materials, the antenna is suitable for long-term use in indoor or outdoor environments. The antenna includes complete mounting hardware for standard masts. 395.0 mm (15.55") N Style Connector Note: Use of these antennas may result in TX and RX emission levels in excess of legal limits. 165.1 mm (6.50") Features • • • • • • 2X M8x1.25 High gain Wide bandwidth Fully weatherized N female connector Rugged & damage-resistant Excellent performance over common frequency antennas 80.0 mm (3.15") 210.0 mm (8.27") 36.5 mm (1.44") Mounting Hardware (included) Electrical Specifications Recom. Freq. Range: 824–960MHz Ordering Information 1.71–2.17GHz ANT-DB1-LP-RM-01-N (with N female connector) 2.40–2.48GHz Polarization: Vertical VSWR: ≤1.5 typ. at center Impedance: 50-ohms Gain: 8.5dBi (Band 1) 9.0dBi (Bands 2 and 3) 3dB H Beamwidth: 57º, 53º, 50º (Bands 1, 2, 3 resp.) 3dB V Beamwidth: 85º, 70º–80º, 70º (Bands 1, 2, 3 resp.) Max. Power: 100W Connector: N-style female Mounting: Bracket with U-bolts, 1.58"–1.97" (40–50mm) mast Weight : 2.4lbs (1.1kg) Wind Velocity: 75mph (120kph) Front/Back Ratio: ≥20dB –1– Revised 2/20/2018 VSWR Graph VSWR 3:1 1.161 1.226 1.113 11% 2:1 1:1 Reflected Power 25% Center Center Center 916MHz 1910MHz 2450MHz 0% Span 200MHz What is VSWR? The Voltage Standing Wave Ratio (VSWR) is a measurement of how well an antenna is matched to a source impedance, typically 50-ohms. It is calculated by measuring the voltage wave that is headed toward the load versus the voltage wave that is reflected back from the load. A perfect match has a VSWR of 1:1. The higher the first number, the worse the match, and the more inefficient the system. Since a perfect match cannot ever be obtained, some benchmark for performance needs to be set. In the case of antenna VSWR, this is usually 2:1. At this point, 88.9% of the energy sent to the antenna by the transmitter is radiated into free space and 11.1% is either reflected back into the source or lost as heat on the structure of the antenna. In the other direction, 88.9% of the energy recovered by the antenna is transferred into the receiver. As a side note, since the “:1” is always implied, many data sheets will remove it and just display the first number. How to Read a VSWR Graph VSWR is usually displayed graphically versus frequency. The lowest point on the graph is the antenna’s operational center frequency. In most cases, this is different than the designed center frequency due to fabrication tolerances. The VSWR at that point denotes how close to 50-ohms the antenna gets. Linx specifies the recommended bandwidth as the range where the typical antenna VSWR is less than 2:1. Copyright © 2018 Linx Technologies 159 Ort Lane, Merlin, OR 97532 Phone: +1 541 471 6256 Fax: +1 541 471 6251 www.linxtechnologies.com –2– ANT-DB1-LP-RM-01-N Data Sheet