California Eastern Laboratories ZICM357SP0 MeshConnect ZICM357SP0-1C Zigbee Module User Manual V2

California Eastern Laboratories MeshConnect ZICM357SP0-1C Zigbee Module Users Manual V2

Users Manual V2

Page 1
Document No:
0011-00-16-11-000 (Issue C)
Technical Note
This document is subject to change without notice.
Document No: 0011-00-16-11-000 (Issue C)
Date Published: July 21, 2016
0011-00-16-11-000
Mini Module External Antenna Implementation
INTRODUCTION
This Technical Note describes the host board layout
requirements for using an external antenna with the
MeshConnect™ ZigBee, Thread, and Bluetooth Smart
Mini Modules from California Eastern Laboratories
(CEL). The ZigBee and Thread ZICM35x Mini Modules
have been certied for use with an external antenna
through the use of the Mini Module castellation pin, a
U.FL connector, a U.FL cable assembly and the specied
external antenna. For the B1010SPx Mini Modules please
refer to the datasheet for latest regulatory certication.
This document details the implementation required
to be compliant with the regulatory certication. This
implementation is applicable to any host board provided
the implementation follows the requirements presented in
this document.
The RF signal is routed to castellation pin 32 on the
modules with Part Number ending in "-1C". The module has
castellation pins 31 and 33 connected to ground to provide
the ability to implement a 50 Ω co-planer transmission line
on a standard two layer FR4 printed circuit board with a
thickness of 0.062 inches.
COPLANAR WAVEGUIDE
The coplanar with ground plane waveguide structure
consists of the RF trace on the topside of the printed circuit
board with adjacent ground planes spaced close to the
RF transmission line. A ground plane under the RF trace
should also exist directly below the transmission line.
Since the module castellation pad is 40 mils wide on the
bottom of the module, an RF trace width of 40 mils, along with
a gap of 8 mils separation from the ground plane, will result
in a good 50Ω transmission line. Using the transmission line
width equal to the castellation pad width eliminates any RF
discontinuity which could degrade the return loss.
Figures 1 and 2 below detail the Gerber layout. The
transmission line is 40 mils wide with an 8 mil gap to the
ground. The length of the transmission line is 200 mils long
from the castellation pad to the edge of the U.FL connector.
Figure 1 below represents the top layer, while Figure 2 is
the bottom layer on the two layer FR4 printed circuit board.
Figure 1. Top Layer
Figure 2. Bottom Layer
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Mini Module External Antenna Implementation
This document is subject to change without notice.
Document No: 0011-00-16-11-000 (Issue C)
Introduction.........................................................................................................................................................................................
1
Coplanar Waveguide.......................................................................................................................................................................
1
Components Used in the Implementation............................................................................................................................
3
Design Verication Test Procedure.........................................................................................................................................
5
Production Test Procedure for Ensuring Compliance .................................................................................................
5
References..........................................................................................................................................................................................
6
Revision History
............................................................................................................................................................................... 6
TABLE OF CONTENTS
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Mini Module External Antenna Implementation
This document is subject to change without notice.
Document No: 0011-00-16-11-000 (Issue C)
COMPONENTS USED IN THE IMPLEMENTATION
The following components specify the requirements for this implementation:
• CEL Module Part Number: ZICM35xSP2-1C is certied with external antenna "Nearson S181AH-2450S"
• CEL Module Part Number: ZICM35xSP0-1C is certied with external Antennas "E-2820-CA" & LSR 001-0100"
• U.FL Connector Part Number: U.FL-R-SMT(10) from Hirose Electric Co. Ltd.
• Host Board: FR4 two layer, 0.062” thick with dielectric constant of 4.2 typical. The transmission line between the
module and the U.FL connector should be a straight line with a width of 40mils, and ground plane spaced 8mils apart
on the top layer. The bottom layer should be a continuous ground plane under the transmission line. Ground vias
should be included between the module castellation pins and the U.FL connector ground pads to provide a good
RF ground connection.
• Connectors, Cable assemblies, and antennas must be as specied in photos below or equivalent.
Figure 3 and 4 below illustrates the implementation.
Part Number ZICM35xSP1-1C
External Antenna Implementation
Figure 3. Implementation using connector, cable and external antenna
Antenna + Cable Assembly
E-2820-CA
Antenna: 001-0100
Cable: 095D1ASMARG316
Edge Mount Reverse Polarity SMA Connector
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Mini Module External Antenna Implementation
This document is subject to change without notice.
Document No: 0011-00-16-11-000 (Issue C)
Part Number ZICM35xSP2-1C
External Antenna Implementation
Figure 4. Implementation using connector, cable and external antenna
DESIGN VERIFICATION TEST PROCEDURE
Any manufacturer that chooses to implement the external antenna on their host board should verify that the implementation
was done properly. To assist with this, the following Test Procedure can be used. The procedure uses a Network Analyzer
capable of making return loss measurements at 2.4GHz.
1. Calibrate the network analyzer for a one port measurement with a center frequency of 2.44GHz and a span of 200MHz.
2. Take a blank host board and solder a 100Ω resistor between castellation Pin 31 and 32.
3. Solder a second 100Ω resistor between castellation Pin 32 and 33.
4. Solder the U.FL connector on the host board.
5. Using the appropriate U.FL to SMA adapter for your network analyzer, measure the Return Loss of the trace,
(either S11 or S22 depending on which port was chosen during the 1-port calibration).
6. A return loss of -15 dB or lower indicates an acceptable implementation (PASS).
Antenna: S181AH-2450S
Cable: 336320-12-0100
U.FL-R-SMT connector
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This document is subject to change without notice.
Document No: 0011-00-16-11-000 (Issue C)
Figure 5. displays the measurement where Port 2 was used as the measurement Port.
Figure 5. Measured Return Loss of RF trace
PRODUCTION TEST PROCEDURE FOR ENSURING COMPLIANCE
During production, host boards should be tested to ensure compliance. CEL recommends that when the host board is
manufactured, the requirement of “Electrical Testing” is specied with the PCB order to guarantee that no short is present
anywhere on the host board (which includes the trace between the U.FL connector location and the module RF castellation
pad). This greatly simplies the production test requirements down to verifying that a solder short did not occur during
the component placement and reow of the host board assembly. Verifying no solder short has occurred can be done by
measuring an open circuit between castellation pins 32 and 33 using a DC multi-meter.
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This document is subject to change without notice.
Document No: 0011-00-16-11-000 (Issue C)
REFERENCES
Reference Documents Download
California Eastern Laboratories
0011-00-07-00-000 CEL – EM357 Mini Modules Datasheet Link
0019-00-07-00-000 CEL – B1010SP0 Mini Modules Datasheet Link
REVISION HISTORY
Previous Versions Changes to Current Version Page(s)
0011-00-16-11-000
(Issue A) August 26, 2013 Initial Technical Note N/A
0011-00-16-11-000
(Issue B) September 4, 2015 Update to include all Mini Modules ALL
0011-00-16-11-000
(Issue C) July 21, 2016
Added external antenna certication information for ZICM35xSPx-1C.
Added new photos under Components Used in the Implementation section 1,3
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Mini Module External Antenna Implementation
This document is subject to change without notice.
Document No: 0011-00-16-11-000 (Issue C)
For More Information
For more information about CEL MeshConnect products and solutions, visit our website at: www.cel.com/MeshConnect.
Technical Assistance
For Technical Assistance, visit www.cel.com/MeshConnectHelp.
The information in this document is current as of the published date. The information is subject to change without notice. For actual
design-in, refer to the latest publications of CEL Data Sheets or Data Books, etc., for the most up-to-date specications of CEL
products. Not all products and/or types are available in every country. Please check with an CEL sales representative for availability and
additional information.
No part of this document may be copied or reproduced in any form or by any means without the prior written consent of CEL.
CEL assumes no responsibility for any errors that may appear in this document.
CEL does not assume any liability for infringement of patents, copyrights or other intellectual property rights of third parties by or arising
from the use of CEL products listed in this document or any other liability arising from the use of such products. No license, express,
implied or otherwise, is granted under any patents, copyrights or other intellectual property rights of CEL or others.
Descriptions of circuits, software and other related information in this document are provided for illustrative purposes in semiconductor
product operation and application examples. The incorporation of these circuits, software and information in the design of a customer’s
equipment shall be done under the full responsibility of the customer. CEL assumes no responsibility for any losses incurred by
customers or third parties arising from the use of these circuits, software and information.
While CEL endeavors to enhance the quality, reliability and safety of CEL products, customers agree and acknowledge that the
possibility of defects thereof cannot be eliminated entirely. To minimize risks of damage to property or injury (including death) to persons
arising from defects in CEL products, customers must incorporate sufcient safety measures in their design, such as redundancy,
re-containment and anti-failure features.
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