ANT-DB1-WRT-MON-UFL Linx Technologies

ANT-DB1-WRT-MON-ccc Data Sheet by 19.0mm Product Description (0.75 ) The dual-band WRT-MON Series antenna supports legacy 2.4GHz WiFi and newer 5.8GHz band applications in a single, compact antenna. The 27.0 mm WRT-MONs low profile and tamper resistant Adhesive Ring (1.06 ) Remove protective design is perfect for challenging applications such plastic before installation as wireless vending, security, traffic, and power SMA or equipment. The antenna is installed through a RP-SMA or U.FL 8.5 mm small hole in the enclosure and has an integrated (0.34 ) closed-cell PSA ring to seal against the enclosure, 10.3 mm 7/16-28 i-PEX silouette protecting critical equipment from harsh, external UNEF-2A (0.41 ) shown in shadow Thread elements. The WRT-MON Series antenna is optimized for applications with conductive enclosures, using the enclosure as the counterpoise and eliminating the need for an additional ground plane inside the product. The WRT-MON Series antenna has a 216.0 mm (8.5) long coax cable with an RP-SMA, SMA or Cable Length 216.0 mm U.FL/MHF-compatible connector as standard (8.50 ) options. It is easily customized with different cable lengths and connectors for volume orders. Contact Linx for details. Electrical Specifications Features Center Frequency: Band 1: 2.45GHz Compact Band 2: 5.8GHz Tamper resistant Recom. Freq. Range: Band 1: 2.402.50GHz Low cost Band 2: 5.7255.875GHz Indoor / outdoor Bandwidth: Band 1: 100MHz Band 2: 150MHz Ordering Information Wavelength: -wave ANT-DB1-WRT-MON-RPS (with RP-SMA connector) VSWR: < 2.0 typical at center ANT-DB1-WRT-MON-SMA (with SMA connector) Peak Gain: Band 1: 1.0dBi max ANT-DB1-WRT-MON-UFL (with U.FL / MHF Band 2: 2.8dBi max compatible connector) Impedance: 50-ohms Max. Power: 5W Connector: RP-SMA, SMA or U.FL / MHF Cable: RG-174, RP-SMA & SMA 1.32 mm U.FL Oper. Temp. Range: 40C to +85C Max. Recom. Torque: 4.0 kgf-cm Electrical specifications and plots measured on 10.16 cm x 10.16 cm (4.00 x 4.00) reference ground plane 1 Revised 12/6/2017Counterpoise Quarter-wave or monopole antennas require an associated ground plane counterpoise for proper operation. The size and location of the ground plane relative to the antenna will affect the overall performance of the antenna in the final design. When used in conjunction with a ground plane smaller than that used to tune the antenna, the center frequency typically will shift higher in frequency and the bandwidth will decrease. The proximity of other circuit elements and packaging near the antenna will also affect the final performance. For further discussion and guidance on the importance of the ground plane counterpoise, please refer to Linx Application Note AN-00501: Understanding Antenna Specifications and Operation. VSWR Graph VSWR 1.5392 1.2395 Reflected Power 25% 3:1 11% 2:1 0% 1:1 CENTER 2450MHz SPAN 200MHz CENTER 5800MHz 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 antennas 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. 2 ANT-2.4-WRT-MON-ccc Data Sheet by