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Summary of Contents for Skyetek SKYEMODULE M1
- Page 1 SKYEMODULE M1 ANTENNA DESIGN GUIDE VERSION 100112...
- Page 2 This product or document is protected by copyright and distributed under licenses restricting its use, copying, distribution, and decompilation. No part of this product or document may be reproduced in any form by any means without prior written authorization of SkyeTek and its licensors, if any.
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Page 3: Table Of Contents
SkyeModule M1 Antenna Design Guide Page TABLE OF CONTENTS About this Document ....................6 Revision History ....................7 Overview ......................8 Internal Antenna ....................9 External Antenna ....................9 Custom Antennas ....................11 Design Procedure ....................11 3.1.1 Example 1 ....................12 3.1.2 Example 2 –... - Page 4 SkyeModule M1 Antenna Design Guide Page LIST OF FIGURES Figure 1-1: Example Prototype Antenna ................6 Figure 2-1: Antenna Connector ..................8 Figure 2-2: The SkyeRead EA1 External Antenna ..............9 Figure 2-3: The SkyeRead EA1 Circuit ................10 Figure 3-1: Example Antenna Layout .................13 Figure 3-2: Improved Antenna with Ground Shield ..............14...
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Page 5: Skyetek Inc 1525 Market St. Ste
SkyeModule M1 Antenna Design Guide Page LIST OF TABLES Table 1-1: Revision History ....................7 Table 2-1: J2 Pin Descriptions ..................8 Skyetek Inc 1525 Market St. Ste 200 Denver, CO 80202 Main 720.328.3425 Fax:720.228.2400 www.skyetek.com... -
Page 6: About This Document
Page About this Document The SkyeModule M1 is designed for low power RFID applications that require less than 4 inches of read range when using the internal antenna of the M1. Alternatively, the M1 can directly drive an external antenna to provide up to 10 inches of read range. For applications that require more than 10 inches of read range, a power amplifier can be used to drive an external antenna. -
Page 7: Revision History
SkyeModule M1 Antenna Design Guide Page Revision History Revision Author Change 100112 Brad Alcorn Releasing new format with minor edits. Table 1-1: Revision History Skyetek Inc 1525 Market St. Ste 200 Denver, CO 80202 Main 720.328.3425 Fax:720.228.2400 www.skyetek.com... -
Page 8: Overview
Overview This antenna design guide provides some basic theory as well as several practical examples of how to design high performance cost effective RFID antennas for use with the SkyeTek M1 RFID reader module. All antenna connections are made at the Antenna Connector J2. -
Page 9: Internal Antenna
SkyeTek Protocol V2 Guide for more details on RF_F). Internal Antenna The internal antenna of the SkyeModule M1 provides 70mm read range and 100mm x 100mm read coverage. Connect ANT to INT to enable the internal antenna. External Antenna Figure 2-2: The SkyeRead EA1 External Antenna Skyetek Inc 1525 Market St. -
Page 10: Figure 2-3: The Skyeread Ea1 Circuit
SkyeModule M1 Antenna Design Guide Page | 10 Figure 2-3: The SkyeRead EA1 Circuit In the figure above, inductor L1 is the physical antenna loop. Zp forms a resonant circuit tuned at 13.56MHz, so there is an amplification of the ANT signal at B. You can measure and compare the amplitudes of the sine waves at points A and B as you first adjust C3 to get a maximum amplitude on the signal at B, and then adjust C4 to further maximize the amplitude of the signal at B. -
Page 11: Custom Antennas
SkyeModule M1 Antenna Design Guide Page | 11 Custom Antennas Inductive loop RFID antennas can be made from any electrically conducive material such as tape, wire, or tubing. The basic requirement is that the antenna is a “loop” with one or more turns. As a general rule, circular and square antenna loops are optimal geometries. -
Page 12: Example 1
SkyeModule M1 Antenna Design Guide Page | 12 3.1.1 Example 1 Here are the component values of the SkyeRead EA1 external antenna: C1 = 22pF 0805 ceramic chip capacitor DigiKey p/n PCC220CNCT-ND C4 = 3 to 10pF variable capacitor DigiKey p/n SG1015-ND... -
Page 13: Example 3 - Copper Tape External Antenna
SkyeModule M1 Antenna Design Guide Page | 13 3.1.3 Example 3 – Copper Tape External Antenna Figure 3-1: Example Antenna Layout L1 is 1-turn rectangle loop copper tape X = 170mm Y = 30mm W = 10mm C1 = 47pF dipped mica capacitor... -
Page 14: Figure 3-2: Improved Antenna With Ground Shield
SkyeModule M1 Antenna Design Guide Page | 14 Figure 3-2: Improved Antenna with Ground Shield X = 170mm Y = 30mm W = 10mm C1 = 220pF dipped in mica capacitor C4 = ___ C2 = 1810pF dipped mica capacitor (470||560||560||220) -
Page 15: Figure 3-3: Design Antenna On Metal
SkyeModule M1 Antenna Design Guide Page | 15 The following pictures are examples of how to build a prototype antenna. If you will mount the antenna on metal, then you should design the antenna on metal as shown in Figure 3-3.
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