Introduction - Quectel EC21 Series Hardware Design

LTE Standard Module Series
1

Introduction

This document defines EC21 series module and describes its air interface and hardware interfaces
which are connected with customers' applications.
This document can help customers quickly understand module interface specifications, electrical and
mechanical details, as well as other related information of EC21 series module. To facilitate its
application in different fields, relevant reference design is also provided for customers' reference.
Associated with application note and user guide, customers can use EC21 series module to design and
set up mobile applications easily.
FCC Certification Requirements.
According to the definition of mobile and fixed device is described in Part 2.1091(b), this device is a
mobile device.
And the following conditions must be met:
1. This Modular Approval is limited to OEM installation for mobile and fixed applications only. The
antenna installation and operating configurations of this transmitter, including any applicable source-
based timeaveraging duty factor, antenna gain and cable loss must satisfy MPE categorical Exclusion
Requirements of 2.1091.
2. The EUT is a mobile device; maintain at least a 20 cm separation between the EUT and the user's
body and must not transmit simultaneously with any other antenna or transmitter.
3. A label with the following statements must be attached to the host end product: This device contains
FCC ID: XMR2021EC21ADL
4. To comply with FCC regulations limiting both maximum RF output power and human exposure to RF
radiation, maximum antenna gain (including cable loss) must not exceed:
❒ LTE Band 2 : ≤ 9.500dBi
❒ LTE Band 4: ≤ 6.500dBi
❒ LTE Band 12 : ≤10.197 dBi
5. This module must not transmit simultaneously with any other antenna or transmitter
6. The host end product must include a user manual that clearly defines operating requirements and
conditions that must be observed to ensure compliance with current FCC RF exposure guidelines.
For portable devices, in addition to the conditions 3 through 6 described above, a separate approval is
required to satisfy the SAR requirements of FCC Part 2.1093
If the device is used for other equipment that separate approval is required for all other operating
configurations, including portable configurations with respect to 2.1093 and different antenna
configurations.
For this device, OEM integrators must be provided with labeling instructions of finished products.
Please refer to KDB784748 D01 v07, section 8. Page 6/7 last two paragraphs:
A certified modular has the option to use a permanently affixed label, or an electronic label. For a
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