Linx Technologies HUMA-900 HumPRO-A Series High Power Data Transceiver User Manual Trace Layout Reference

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Document ID	3339898
Application ID	x0lMZPW8JGZhehqYahvbdw==
Document Description	Trace Layout Reference
Short Term Confidential	No
Permanent Confidential	No
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Document Type	User Manual
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Filesize	68.63kB (857827 bits)
Date Submitted	2017-03-30 00:00:00
Date Available	2017-03-30 00:00:00
Creation Date	2017-03-29 08:13:40
Producing Software	Microsoft® Word 2010
Document Lastmod	2017-03-29 08:40:07
Document Title	Trace Layout Reference
Document Creator	Microsoft® Word 2010
Document Author:	Shawn Hogan

RG-110
HUM-A-900-PRO PCB Trace Layout
Reference Guide
3/29/17
For proper integration of the HUM-A-900-PRO module in end products the following requirements must
be met. A host product incorporating the HUM-A-900-PRO module cannot take advantage of the preexisting certification of the component transmitter without conformity to the specific requirements in
these instructions.
Contents
1.
2.
Approved RF Connections for HUM-A-900-PRO-UFL ............................................................................ 2
Approved RF Connections for HUM-A-900-PRO-CAS ............................................................................ 2
2.1.
Edge Mount RP-SMA Connection ................................................................................................. 2
2.2.
MicroSplatch Antenna Connection ............................................................................................... 4
2.3.
Vertical Mount RP-SMA connection ............................................................................................. 6
3. Approved Antennas ............................................................................................................................... 8
4. Design Verification Test Procedures ...................................................................................................... 9
5. Production Test Procedures for Ensuring Compliance .......................................................................... 9
HUM-A-900-PRO Trace Layout Guide
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1. Approved RF Connections for HUM-A-900-PRO-UFL
The HUM-A-900-PRO-UFL module employs an integrated u.FL RF connector. Therefore, the design
and layer stackup of the host PCB does not need to meet any special requirements to maintain the
validity of the module’s pre-certified status.
2. Approved RF Connections for HUM-A-900-PRO-CAS
2.1. Edge Mount RP-SMA Connection
This is the preferred RF connection design for the HUM-A-900-PRO-CAS module and is
approved with all operating modes of the module. This design uses a PCB microstrip to
connect the HUM-A-900-PRO-CAS module’s Antenna castellation to an edge mount reverse
polarity SMA connector Linx Part number CONREVSMA003.062. A four layer PCB is used in
this design. The Top layer 24mil wide RF trace and Mid-Layer 1 ground plane form an RF
microstrip.
 Table 1 shows the required host PCB layer stackup for the Edge Mount RP-SMA
connection. This layer stackup must be matched precisely including material type,
dielectric constant, dielectric thickness, and copper thickness.
 Figure 1 shows the trace dimensions that must be followed precisely, including trace
width, and routing
 The Ground plane on Mid-layer 1 must not have any cutouts in the area under the RF
trace or the area between the module and the connector.
Table 1 – PCB Stackup for Edge Mount RP-SMA Connection
HUM-A-900-PRO Trace Layout Guide
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Figure 1 - Trace Dimensions for Edge Mount RP-SMA Connection
HUM-A-900-PRO Trace Layout Guide
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2.2. MicroSplatch Antenna Connection
This RF connection is approved with all operating modes of the module. This design uses a
PCB microstrip to connect the HUM-A-900-PRO-CAS module’s Antenna castellation to a PCB
mount antenna Linx Part number ANT-916-uSP. A four layer PCB is used in this design. The
Top layer 24mil wide RF trace and Mid-Layer 1 ground plane form an RF microstrip.
 Table 2 shows the required host PCB layer stackup for the MicroSplatch Antenna
connection. This layer stackup must be matched precisely including material type,
dielectric constant, dielectric thickness, and copper thickness.
 Figure 2 shows the trace dimensions that must be followed precisely, including trace
width, and routing
 The Ground plane on Mid-layer 1 must not have any cutouts in the area under the RF
trace or the area between the module and the connector.
Table 2 - PCB Stackup for MicroSplatch Antenna Connection
HUM-A-900-PRO Trace Layout Guide
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Figure 2 - Trace Dimensions for MicroSplatch Antenna Connection
HUM-A-900-PRO Trace Layout Guide
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2.3. Vertical Mount RP-SMA connection
The Vertical Mount RP-SMA RF connection is approved only for operation at the Low RF Data
Rate (19.2kbps) This design uses a PCB microstrip to connect the HUM-A-900-PRO module’s
Antenna castellation to an edge mount reverse polarity SMA connector Linx Part number
CONREVSMA001. A four layer PCB is used for this design. The Top layer 14mil wide RF trace
and Mid-Layer 1 ground plane form an RF microstrip.
 Table 3 shows the required host PCB layer stackup for the Vertical Mount RP-SMA
connection. This layer stackup must be matched precisely including material type,
dielectric constant, dielectric thickness, and copper thickness.
 Figure 3 shows the trace dimensions that must be followed precisely, including trace
width, routing, and RF matching components. A 15pF series capacitor (Murata
GRM0335C1H150GA01D) is located between the module and the RP-SMA connector for
RF matching. A 10mil wide microstrip connects the center post of the RP-SMA connector
to a 100nH inductor (Bourns CW201212-R10J) for RF matching.
 The Ground plane on Mid-layer 1 must not have any cutouts in the area under the RF
trace, in the area between the module and the connector, or under the RF matching
components.
Table 3 - PCB Stackup for Vertical Mount RP-SMA Connection
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Note: The vertical SMA connector is a through-hole mount component. The connector must be
installed on the bottom of the PCB. Figure 3 shows the top side of the PCB were the HUM-A-900PRO-CAS module is mounted and the solder side of the RP-SMA connector is visible.
Figure 3 - Trace Dimensions and RF Matching Component Placement for Vertical Mount RP-SMA
Connection
HUM-A-900-PRO Trace Layout Guide
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3. Approved Antennas
The antennas in Table 1 are tested and approved for use with the HUM-A-900-PRO Module. According
to the FCC Permissive Change Policy (178919 D01) “Additional antennas that are equivalent may be
substituted, and then marketed without a Class II permissive change… Equivalent antennas must be of
the same type (e.g., yagi, dish, etc.), must be of equal or less gain than an antenna previously authorized
under the same grant of certification (FCC ID), and must have similar in-band and out-of-band
characteristics (consult specification sheet for cutoff frequencies). Contact Linx for information about
other antennas that meet these requirements and may be used with the HUM-A-900-PRO module.
Table 4 - Approved Antennas
HUM-A-900-PRO Trace Layout Guide
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4. Design Verification Test Procedures
After the design is fabricated the following measurements should be executed to verify the design:
1. Mechanical measurement of dimensions specified in the Microstrip Dimensions diagrams above
2. Obtain and review the detailed layer stackup solution used for the build from the PCB
manufacturer that specifies dielectric thicknesses and target dielectric constants for substrate
materials.
Note: Linx Applications Engineers are available to review Layout designs to ensure compliance and
optimal RF performance.
5. Production Test Procedures for Ensuring Compliance
During production test for the host device, The HUM-A-900-PRO module is to be activated in maximum
power transmit mode and the conducted RF output power at the RP-SMA connector is to be measured
using a Spectrum Analyzer, RF Power Meter or other appropriate RF measurement equipment. The
conducted output power should not exceed the output power specified in the HUM-A-900-PRO Data
Guide. If a conducted output power test is not possible on the host device, an equivalent radiated
output power test may be used.
HUM-A-900-PRO Trace Layout Guide
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