Telit Wireless Solutions LE915A P Series, Руководство по конструкции аппаратуры

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LE915Ax-P
Hardware Design Guide
1VV0301680 Rev. 2
Page 33 of 51 2021-10-04
Not Subject to NDA
Figure 13: Insertion Loss of G-CPW line plus SMA connector
6.1.2.3. Antenna Installation Guidelines
• Install the antenna in a place covered by the LTE signal with CAT-M1 support.
• The Antenna must not be installed inside metal cases.
• The Antenna must be installed according Antenna manufacturer instructions.
• The Antenna integration should optimize the Radiation Efficiency. Efficiency values
> 50% are recommended on all frequency bands.
• The Antenna integration should not perturb the radiation pattern described in the
documentation of the Antenna manufacturer.
• It is preferable to get an omnidirectional radiation pattern.
• The Antenna Gain must not exceed the values indicated in regulatory requirements,
where applicable, in order to meet the related EIRP limitations. The Typical
antenna Gain in most M2M applications does not exceed 2dBi.
•
If the device antenna is located farther than 20cm from the human body and there
are no co-located transmitters, then the Telit FCC/IC approvals can be re-used by
the end product.
• If the device antenna is more than 20cm away from the human body or there are
co-located transmitters, then the additional FCC/IC testing may be required for
the end product (Telit FCC/IC approvals cannot be reused).