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HL7548 Datasheet(PDF) 48 Page - List of Unclassifed Manufacturers |
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HL7548 Datasheet(HTML) 48 Page - List of Unclassifed Manufacturers |
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48 / 53 page  4116369 Rev 9.0 September 04, 2017 48 7. Legal Information 7.1. FCC Regulations The HL7548 and HL7588 modules have been granted modular approval for mobile applications. Integrators may use the HL7548 or HL7588 modules in their final products without additional FCC certification if they meet the following conditions. Otherwise, additional FCC approvals must be obtained. 1. At least 20 cm separation distance between the antenna and the user’s body must be maintained at all times. 2. To comply with FCC regulations limiting both maximum RF output power and human exposure to RF radiation, the maximum antenna gain including cable loss in a mobile-only exposure condition must not exceed: ▪ For HL7548: ▪ 9.01 dBi in LTE Band 2 ▪ 6.00 dBi in LTE Band 4 ▪ 10.42 dBi in LTE Band 5 ▪ 9.73 dBi in LTE Band 17 ▪ For HL7588: ▪ 7.51 dBi in Band 2 ▪ 5.78 dBi in Band 4 ▪ 9.72 dBi in Band 5 ▪ 10.17 dBi in Band 13 ▪ 9.74 dBi in Band 17 3. The HL7548 and HL7588 modules must not transmit simultaneously with other collocated radio transmitters within a host device. 4. The RF signal must be routed on the application board using tracks with a 50Ω characteristic impedance. Basically, the characteristic impedance depends on the dielectric, the track width and the ground plane spacing. In order to respect this constraint, Sierra Wireless recommends using MicroStrip or StripLine structure and computing the Tracks width with a simulation tool (like AppCad shown in the figure below and that is available free of charge at http://www.agilent.com). |
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