Summary of Contents for metraTec Echo-5P
- Page 1 Technical Documentation and Integrations-Guide for metraTec Echo-5P and Echo-8P UHF Patch Antennas Release: July 2017 Version: 1.4 Technical Documentation metraTec Echo-5P/Echo-8P Page 1 of 14...
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Page 2: Table Of Contents
4 Maximum Input Power and Antenna Gain................9 4.1 Introduction to formulas and units.................9 4.2 Calculations for Echo-5P....................9 4.3 Calculations for Echo-8P....................10 5 Further RF Characteristics....................11 5.1 Directional Characteristics...................11 5.2 Antenna Bandwidth.....................12 5.3 Axial Ratio........................12 6 Version Control........................13 Technical Documentation metraTec Echo-5P/Echo-8P Page 2 of 14... -
Page 3: General Information / Security Advice
Union are defined. The system integrator (the person or company who combines this product with other devices, e.g. UHF readers) is responsible for the compliance with these limits. The document is available for free at the website of the ETSI (www.etsi.org). Technical Documentation metraTec Echo-5P/Echo-8P Page 3 of 14... -
Page 4: Product Description
2.1 Intended Use The Echo-5P and Echo-8P are UHF patch antennas developed for the use in UHF RFID systems using the European frequency range (around 868 MHz). All technical specifications in this document are given with this intended use in mind. -
Page 5: Product Drawing
2.3 Product Drawing Fig. 1: Drawing of Echo-5P (all dimensions in mm) Fig. 2: Drawing of Echo-8P (all dimensions in mm) Technical Documentation metraTec Echo-5P/Echo-8P Page 5 of 14... -
Page 6: Accessories
2.4 Accessories Besides the Echo-5P and Echo-8P antennas metraTec offers all the necessary accessories, e.g. coaxial cables with R-TMC/SMA connector on the one side and (almost) any other antenna connector on the other side. For this we can use standard coaxial cables or special low loss coaxial cable with a loss of only 0,3 dB/meter (for applications with cable length up to 15 m without problems). -
Page 7: Installation / Integration
Lay the cable straight to the bottom of the patch or to the back (using a 90° connector). Do not lay the cable around the sides of the antenna. Technical Documentation metraTec Echo-5P/Echo-8P Page 7 of 14... - Page 8 Do not lay the cable in front of the antenna, directly in the radiation field. Keep cables as short as possible and use low loss cables for best performance. If needed, these can be purchased from metraTec. Technical Documentation metraTec Echo-5P/Echo-8P Page 8 of 14...
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Page 9: Maximum Input Power And Antenna Gain
Depending on the type of antenna the following power limits are allowed: For systems with antennas with an angular width of more than 70° (e.g. the Echo-5P) an effective radiated power (ERP) of 500mW (27 dBm) is allowed. ... -
Page 10: Calculations For Echo-8P
=27 dBm−5 dBic + 5.15+ 0.3=27.35 dBm=540 mW Mobile UHF readers with a typical maximum output power of 500mW may be operated with the Echo-5P. Fixed readers with typically more than 500mW have to be limited to 540 mW. 4.3 Calculations for Echo-8P The Echo-8P has an antenna gain of approx. -
Page 11: Further Rf Characteristics
5 Further RF Characteristics 5.1 Directional Characteristics The radiation pattern/directional characteristics of the Echo-5P is identical for both polarizations and is shown in Fig. 3. The radiation pattern also shows the radiation of the Echo-8P in the vertical polarization. Fig. 4 shows the radiation of the Echo-8P in the horizontal polarization. -
Page 12: Antenna Bandwidth
The axial ratio is the ratio of the radiated power of the two polarization planes. A circular antenna should distribute the power of the reader evenly between both planes to read RFID transponders at any polarization. The axial ratio of the Echo-5P and Echo-8P is typically 1-2 dB. Technical Documentation metraTec Echo-5P/Echo-8P Page 12 of 14... -
Page 13: Version Control
6 Version Control Version Change edited by Date created 10.09.09 minor edits 09.07.14 update: antenna dimensions, minor 07.10.14 corrections, layout update address and image 07.12.16 update technical sketch Echo-5P, 06.07.17 update technical specifications Echo-5P Technical Documentation metraTec Echo-5P/Echo-8P Page 13 of 14... - Page 14 Copyright © 2017 metraTec GmbH Reprint or reproduction of this documentation for other than internal purposes is only allowed with written permission by metraTec GmbH. All trademarks are the property of their respective owners. All right reserved. We are constantly improving our products. Changes in function, form, features can happen without prior notice.
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