LSR TIWI5 Leitfaden

The information in this document is subject to change without notice.

TIWI5

Antenna Design Guide

Last updated

February 11, 2016

TIWI5

ANTENNA DESIGN GUIDE

The information in this document is subject to change without notice.

Table of Contents

1Introduction ..........................................................................................................................3

1.1 Purpose & Scope.......................................................................................................................3

1.2 Applicable Documents...............................................................................................................3

1.3 Revision History.........................................................................................................................3

2Chip Antenna.........................................................................................................................4

2.1 Chip Antenna Specifications......................................................................................................4

2.2 Mechanical Dimensions.............................................................................................................5

2.3 Terminal Configuration ..............................................................................................................5

2.4 Typical Radiation Patterns.........................................................................................................6

3Dipole Antenna......................................................................................................................8

3.1 Dipole Antenna Specifications...................................................................................................9

3.2 Typical Radiation Patterns.......................................................................................................10

3.3 Mechanical Dimensions...........................................................................................................13

4PCB Layout Requirements ....................................................................................................14

4.1 Chip Antenna Reference Design PCB ....................................................................................15

4.2 Chip Antenna Reference Design Schematic...........................................................................16

4.3 Chip Antenna Matching Components......................................................................................17

4.4 Dipole Antenna PCB Layout Requirements............................................................................18

4.5 Dipole Antenna Reference Design PCB..................................................................................19

4.6 Dipole Antenna Reference Design Schematic........................................................................20

5EMC Compliance..................................................................................................................21

5.1 Summary .................................................................................................................................21

5.2 Module Integration Considerations –Antenna Systems .........................................................21

5.3 Module Integration Considerations –Substitute Antenna Systems ........................................22

5.4 Module Integration Considerations –Circuit Implementation..................................................22

5.5 Module Integration Considerations - Top Assembly................................................................22

5.6 Testing Requirements for End-Product...................................................................................22

5.7 SAR Testing Requirements for End-Product...........................................................................22

6Contacting LS Research ........................................................................................................23

TIWI5

ANTENNA DESIGN GUIDE

The information in this document is subject to change without notice.

1.1 Introduction

1.2 Purpose & Scope

The purpose of this document is to provide details regarding the design and integration of

certified antennas to the TiWi5 module. It covers both a PCB mounted Chip Antenna as well as

an externally mounted whip antenna. It will inform the reader as to the required PCB layout

details and provide expected performance specifications.

1.3 Applicable Documents

TiWi5 Datasheet (330-0042)

ModFLEX Accessories 2.4/5.4 GHz Dipole Antenna Datasheet (330-0094)

Johanson Technology 2450AD46A5400 Datasheet

1.4 Revision History

Date

Change Description

Revision

2/3/2012

Initial release

1.0

9/11/2014

Removed Figure 7

1.1

6/17/2015

Added notes regarding module is not certified as a DFS Master, hence AP

mode is not allowed in the 5 GHz band.

1.2

Table 1 Revision History

TIWI5

ANTENNA DESIGN GUIDE

The information in this document is subject to change without notice.

2Chip Antenna

The Johanson Technology ceramic chip antenna is a passive, surface mount component, based

on Low Temperature Co-fired Ceramic (LTCC) technology. This antenna exhibits linear

polarization and provides a near omni-directional radiation pattern. It is matched to 50 ohm

impedance and is well suited for integration to the LSR TiWi5 radio module.

The chip antenna is used external to the TiWi5 module as part of an overall solution for the LSR

TiWi5 radio module.

Johanson Part Number

Description

2450AD46A5400E

2.4/5.4 GHz Ceramic Dual Band Chip

Antenna

Table 2 –Chip Antenna Overview

2.1 Chip Antenna Specifications

Specification

Value

Peak Gain

+1 dBi

Impedance

50 ohms, Nominal

Type

Dipole

Polarization

Linear

VSWR

≤24：1, Maximum

Frequency

2.45/5.4 GHz

Input Power

3W max

Size

8.5mm × 1.6 mm

Operating Temperature

-40 to +85°C

Table 3 –Chip Antenna Specifications

TIWI5

ANTENNA DESIGN GUIDE

The information in this document is subject to change without notice.

2.2 Mechanical Dimensions

Table 4 –Chip Antenna Mechanical Dimensions

2.3 Terminal Configuration

Table 5 –Chip Antenna Terminal Configuration

Typical Radiation Pattern Figure 1 - Chip Antenna Radiation Patterns (5 GHz)

TIWI5

ANTENNA DESIGN GUIDE

The information in this document is subject to change without notice.

2.4 Typical Radiation Patterns

Figure 1 - Chip Antenna Radiation Patterns (2.4 GHz)

TIWI5

ANTENNA DESIGN GUIDE

The information in this document is subject to change without notice.

Figure 2 - Chip Antenna Radiation Patterns (5 GHz)

TIWI5

ANTENNA DESIGN GUIDE

The information in this document is subject to change without notice.

3Dipole Antenna

The LSR 001-0009 Dipole Antenna is used in conjunction with the LSR 080-0001 U.FL to Reverse

Polarity SMA Cable, and the Hirose PCB mounted U.FL connector, to provide an externally

mounted antenna solution for the LSR TiWi5 radio module.

Part Number

Description

LS Research

001-0009

2.4/5.5 GHz Dipole Antenna with Reverse Polarity

SMA Connector

LS Research

080-0001

U.FL to Reverse Polarity SMA Bulkhead Cable

105mm

Hirose

U.FL-R-SMT(10)

PCB Mounted U.FL Connector

Table 6 –Dipole Antenna Overview

TIWI5

ANTENNA DESIGN GUIDE

The information in this document is subject to change without notice.

3.1 Dipole Antenna Specifications

Specification

Value

Gain

+2 dBi

Impedance

50 ohms, Nominal

Type

Dipole

Polarization

Linear Vertical

VSWR

≤2.0：1, Maximum

Frequency

2400-2500MHz, 5150-5850MHz

Weight

22g

Size

137 × 13 mm

Antenna Color

Black

Table 7 –Dipole Antenna Specifications

TIWI5

ANTENNA DESIGN GUIDE

The information in this document is subject to change without notice.

3.2 Typical Radiation Patterns

Figure 3 –Dipole Antenna Pattern (LSR Antenna @ 2405 MHz)

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