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Procedure

DS50003751A - 1

Introducon

The WILCS02 Wi-Fi

module with external antenna requires an antenna-specic calibration step when the

external antenna’s Voltage Standing Wave Ratio (VSWR) is not ≤ 1.5 (meaning the return loss is > -14 dB) within

the operating bandwidth of 2400 MHz to 2484 MHz. This external antenna calibration procedure is crucial

for achieving the best results for external antennas with 1.5<VSWR<2. This document describes the necessary

requirements and the calibration procedure.

WILCS02 Module External Antenna Calibraon Guide

WILCS02

Procedure

DS50003751A - 2

Table of Contents

Introduction...........................................................................................................................................................................1

1. External Antenna Calibration (Cal) Overview.............................................................................................................3

1.1. Requirements for External Antenna Cal......................................................................................................... 3

2. Programming the Wi-Fi

Module and Performing External Antenna Calibration................................................. 4

2.1. Programming the Wi-Fi

Module and Enabling HUT Mode.......................................................................... 4

2.2. Performing the External Antenna Cal..............................................................................................................4

2.3. Erasing External Antenna Cal........................................................................................................................... 5

3. Summary........................................................................................................................................................................ 7

4. Document Revision History..........................................................................................................................................8

Microchip Information......................................................................................................................................................... 9

The Microchip Website................................................................................................................................................. 9

Product Change Notication Service.......................................................................................................................... 9

Customer Support.........................................................................................................................................................9

Microchip Devices Code Protection Feature..............................................................................................................9

Legal Notice....................................................................................................................................................................9

Trademarks.................................................................................................................................................................. 10

Quality Management System.....................................................................................................................................11

Worldwide Sales and Service..................................................................................................................................... 12