ZM3102AU-CME1 [ETC]
ZM3102N Z-Wave Module Datasheet; ZM3102N Z - Wave的模块数据表
| 型号： | ZM3102AU-CME1 |
| 厂家： | 
ETC |
| 描述： | ZM3102N Z-Wave Module Datasheet |
| 文件： | 总17页 (文件大小：247K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Datasheet
ZM3102N Z-Wave Module Datasheet
Document No:
Version:
DSH10756
6
Datasheet for the ZM3102N Z-Wave Module based on the
ZW0301 Z-Wave Single Chip.
Description:
Written By:
Date:
SDH;TCA
2007-10-01
DCL
Reviewed By:
Restrictions:
None
Approved by:
Date
2007-10-01
CET
13:28:40
Initials Name
NTJ Niels Thybo Johansen
Justification
This document is the property of Zensys A/S. The data contained herein, in whole or in part,
may not be duplicated, used or disclosed outside the recipient for any purpose other than to
conduct technical evaluation. This restriction does not limit the recipient's right to use
information contained in the data if it is obtained from another source without restriction.
REVISION RECORD
Doc.
Date
By
Pages
Brief description of changes
Rev
affected
1
2
3
3
20060913
20061127
20070209
20070420
SDH ALL
SDH 13
SDH ALL
First release
Document reference [1] updated to developers kit v5.0
HK, ANZ frequencies added
Datasheet state “Preliminary removed”
SDH ALL
Table 4, 6 HK, ANZ RF parameters updated.
6
20070709
SDH Table 4
Preliminary removed from RF parameters
Zensys A/S
Contents
Page ii of iii
Table of Contents
1
PRODUCT DESCRIPTION...................................................................................................................2
1.1 Name Convention..................................................................................................................................2
1.2 Overview................................................................................................................................................2
1.3 Signal Description..................................................................................................................................3
1.4 RF Front-End.........................................................................................................................................5
1.4.1
1.4.2
RF input/output...........................................................................................................................5
Antenna Matching.......................................................................................................................5
1.5 Z-Wave Module Programming ..............................................................................................................5
2
SPECIFICATIONS ................................................................................................................................6
2.1 ZW0301 Specification ...........................................................................................................................6
2.2 ZW0301 Single Chip Peripherals ..........................................................................................................6
2.3 RF Specification ....................................................................................................................................7
2.4 Electrical Specification ..........................................................................................................................7
2.4.1
2.4.2
Absolute Maximum Ratings........................................................................................................8
DC Characteristics......................................................................................................................8
2.5 Physical Specification............................................................................................................................9
2.6 Process Specification............................................................................................................................9
2.7 Recommended PCB Footprint Outline................................................................................................10
2.8 Recommended Reflow Profile.............................................................................................................11
2.9 Application PCB Layout Recommendation .........................................................................................11
2.9.1
2.9.2
2.9.3
Supply Voltage .........................................................................................................................11
Ground Plane ...........................................................................................................................12
Antenna Interconnection...........................................................................................................12
3
SOFTWARE........................................................................................................................................13
3.1 SPI Interface........................................................................................................................................13
3.2 EEPROM.............................................................................................................................................13
4
REFERENCES....................................................................................................................................14
Zensys A/S
Contents
Page iii of iii
ZM3102N
Datasheet
Integrated Z-Wave RF Module
Features
The ZM3102N Z-Wave Module is a fully integrated RF
communication module that uses the unlicensed Short-Range-
Device (SRD) frequency band of 868.0-868.6MHz in Europe,
902MHz-928MHz in US, 919.5MHz-920.0 MHz in Hong Kong,
921MHz-929 MHz in New Zealand, and 915MHz-928 MHz in
Australia. The ZM3102N is dedicated for wireless control and
monitoring of residential products like lighting and appliance
control, energy management, access control, security and building
automation.
Interfaces
•
•
•
•
•
•
•
10 General Purpose I/O’s
Two Interrupt Inputs
Serial UART
SPI Interface
Triac Control Interface
PWM Output
Four multiplexed 12/8 bit
ADC inputs
Together with the patented Z-Wave Protocol the ZM3102N Z-Wave
Module delivers a complete highly reliable RF communication
solution. The Z-Wave Protocol uses Frame Acknowledgement,
Retransmission, Collision Avoidance, Frame Checksum Check and
sophisticated Routing to assure reliable full home coverage.
ZW0301 Single Chip
•
•
•
•
Optimized 8051 CPU Core
32kbyte Flash
2kbyte SRAM
Power-On-Reset / Brown-
Out Detection
•
•
Supply Voltage: 2.1V-3.6V
Power Consumption
TX@-5dBm = 24mA
TX@0dBm = 36mA
RX = 23mA
o
o
o
o
Power down/sleep mode
= 2.5μA
RF
•
Freq for 9.6kbps / 40kbps
EU: 868.42 / 868.40MHz
US: 908.42 / 908.40MHz
HK: 919.82 / 919.80MHz
NZ: 921.42 / 921.40MHz
AUS:921.42 / 921.40MHz
High Sensitivity
•
(-102/-98dBm)
•
•
•
FSK Modulation
9.6kbps/40kbps Data Rate
-22.0dBm to -2.0dBm Output
power (ZM3102N) (EU, US)
-23.5dBm to -3.5dBm Output
power (ZM3102N) (HK,ANZ)
Complies with:
The ZM3102N Z-Wave Module contains the integrated ZW0301
Z-Wave Single Chip, system crystal, and RF front-end circuitry.
The ZW0301 Single Chip is an integrated chip containing RF
Transceiver, 8051 MCU core, SRAM, Flash Memory for Z-Wave
Protocol and OEM Application software storage, Triac Controller,
and a wide range of HW interfaces.
•
EU: EN 300 220
US: FCC CFR47 part 15
HK: HKTA 1035
ANZ: ANZ 4268+A1+A2
This complete RF solution makes it very easy for OEM customers
to RF enable their products without having to do the time
consuming work of designing, verifying and optimizing the RF
design and thereby enables faster time to market.
Applications
•
•
•
Home Automation
Sensor networks
AV control
Zensys A/S
Contents
Page 1 of 14
DSH10756-6
ZM3102N Z-Wave Module Datasheet
2007-10-01
1 PRODUCT DESCRIPTION
1.1 Name Convention
The name convention of the ZM3102N module is explained below:
•
•
•
•
ZM: Z-Wave Module
31: Based on ZW0301 ASIC
02: Size of the module (2cm2)
N: The module contains castellation notches, which enables manual solderability and rework.
1.2 Overview
The ZM3102N Z-Wave Module is a fully integrated module containing all the HW and SW required to
Z-Wave enable OEM products. The ZM3102N Z-Wave Module contains the Z-Wave ZW0301 Single
Chip, System Crystal, RF Front-end and RF Supply Voltage Filtering. Only the antenna needs to be
implemented by the developer designing the Z-Wave enabled product.
ZM3102N Z-Wave Module
RF Supply
Voltage
Filtering
System
Crystal
Decoupling
ZW0301 Single Chip
POR/
General
Purpose
Timer
System
Clock
Brown-
32K bytes
Flash Memory
out
Z-Wave SW API
and
Application SW
Watch-
dog
8/12 Bit
ADC
Timer 0/1
RF Transceiver
2 kbytes
SRAM
256 bytes
SRAM
RF Front-End
WUT
UART
8051W
CPU
Power
Mgt.
Triac
Ctrl
SFR
Modem
Interrupt
Ctrl
SPI
Ctrl
I/O
Interfaces
Figure 1 ZM3102N Z-Wave Module Block Diagram
Zensys A/S
Product Description
Page 2 of 14
DSH10756-6
ZM3102N Z-Wave Module Datasheet
2007-10-01
The ZM3102N Z-Wave Module contains a system crystal, why no external crystal is needed. In order to
get a high reliable and high performance RF communication, the RF Front-end has an optimized and
throughout tested matching circuitry, a narrow band SAW filter dedicated for Z-Wave communication
and there are filtering of the RF circuitry supply voltage.
The ZM3102N Z-Wave Module is connector-less using Castellation Notches for easy mounting of the
module to an OEM Application PCB. The ZM3102N Z-Wave Module has a mounting option for a top
shield that improves noise immunity of the module.
The Z-Wave Protocol is designed to enable automatic network address assignment at installation, and
simple inclusion/exclusion of nodes. These protocol-handling techniques ensure easy installation,
expansion, and management of the Z-Wave control network. Furthermore each Z-Wave network has its
own unique Network Identifier preventing control problems or interference from neighboring networks.
The Z-Wave Protocol has a well-defined Application-Programming-Interface (API) enabling easy and
fast Application SW development.
1.3 Signal Description
6
4
3
2
5
1
Notch #
Signal Name
GND
1
2
RESET_N
3
P1.7 / INT1
P1.6 / PWM / INT0
P1.5
7
4
5
8
9
6
GND
18
17
7
P1.2 / MISO1
P1.4 / SCK1
P1.3 / MOSI1
P1.1 / ADC3 / RXD
VCC
ZM3102N
8
9
EU 868.4 MHz /
US 908.4 MHz /
HK 919.8 MHz /
NZ 921.4 MHz /
AUS 921.4 MHz
10
10
11
12
13
14
15
16
17
18
11
GND
P0.1 / ADC1 / TRIAC
P0.0 / ADC0 / ZEROX
P1.0 / ADC2 / TXD
GND
14 15
12 13
GND
16
RF in/out
Figure 2 ZM3102N Outline and Signals
Zensys A/S
Product Description
Page 3 of 14
DSH10756-6
ZM3102N Z-Wave Module Datasheet
2007-10-01
Name
Notch #
I/O
Description
ADC[3:0]
10, 13,
14, 15
I
Analog-to-Digital Converter input. The ADC is 12/8 bit and can
use either VCC or an internal/external voltage as reference.
ADC3: input
ADC2: input
ADC1: input / lower reference
ADC0: input / higher reference
GND
1, 6, 12,
16, 17
Power
I/O
Ground signal
INT[1:0]
3, 4
Interrupt: The signal can be either level or edge trigged. When in
power down mode, the ZM3102N Z-Wave Module’s MCU can be
woken up by asserting the interrupt signal INT1.
P[0.1-0.0],
P[1.7-1.0]
3, 4, 5,
7, 8, 9,
10, 13,
14, 15
I/O
In/Out: General purpose I/O signal.
MISO1
7
9
4
2
I/O
I/O
I/O
I
Master-In-Slave-Out SPI interface: output in slave mode
operation and input in master mode operation.
MOSI1
Master Out Slave In SPI interface: input in slave mode operation
and output in master mode operation.
PWM
Pulse Width Modulator Output: Used for frequency variation
applications.
RESET_N
Reset: Active low reset. The ZW0301 Single Chip has an
integrated Power-On-Reset and Brown-out detection circuitry.
RF
18
10
I/O
I/O
RF Input/Output
RXD
UART Receive Data: Supports 9.6kbaud, 38.4kbaud,
115.2kbaud.
SCK1
8
I/O
I/O
SPI Clock: Can be used as either master SPI clock output or
slave SPI clock input.
TRIAC
13
TRIAC Control: A triac controller is implemented in the ZW0301
Single Chip that can controls a triac on the Application Module
like light dimmer modules etc.
TXD
15
I/O
UART Transmit Data: Supports 9.6kbaud, 38.4kbaud,
115.2kbaud.
VCC
11
14
Power
I/O
ZM3102N supply voltage.
ZEROX
Zero Cross Detection: Zero cross detection signal used on
dimmer modules detecting 120/240V zero crossing.
1. Please note that the SPI interface (MISO, MOSI and SCK) is not available for the Application SW in some Z-Wave
protocol API’s, see [3]
Table 1 ZM3102N Signal Description
All signals in Table 1 except RF, VCC and GND are connected directly to the corresponding signals on
the ZW0301 Z-Wave Single Chip on the ZM3102N Z-Wave Module. A detailed description of these
signals is given in the ZW0301 Z-Wave Single Chip datasheet [1].
Zensys A/S
Product Description
Page 4 of 14
DSH10756-6
ZM3102N Z-Wave Module Datasheet
2007-10-01
1.4 RF Front-End
1.4.1 RF input/output
The ZM3102N Z-Wave Module is equipped with a SAW filter that rejects the unwanted frequencies both
in receive and transmit operations.
ZM3102
ZW0301
RF IN/OUT
SAW
18
Figure 3 ZM3102N RF Front-end Circuitry
The RF input/output on the ZW0301 is a single ended input/output that is internally matched to 50 ohm.
1.4.2 Antenna Matching
The ZM3102N Z-Wave Module is using an antenna placed on the Application Module, the matching of
the external antenna to 50 ohm (SAW filter impedance) must be made on the Application Module.
As the ZM3102N Z-Wave Module is integrated into various products, different types of antennas can be
implemented to get the best RF performance, i.e. range and reliability. In [4], a good overview of the
different antennas is given as well as their pro’s and con’s. In the case the antenna is not 50ohm a
matching network must be implemented between the ZM3102N Z-Wave Module and the antenna. The
matching network can for example be a “pi” or a “T” structure as shown in Figure 4.
“T”
“π”
ZM3102N
ZM3102N
pin 18
pin 18
Antenna
Antenna
Figure 4 “T” and “π” structure for the antenna-matching network
1.5 Z-Wave Module Programming
The ZM3102N Z-Wave Module is programmed using the SPI interface and the RESET_N signal. The
programming procedure of the ZW0301 flash is identical to the programming procedure of ZW0201. For
detailed programming instructions see [2] and recommended programming tool(s) see [3].
Zensys A/S
Product Description
Page 5 of 14
DSH10756-6
ZM3102N Z-Wave Module Datasheet
2007-10-01
2 SPECIFICATIONS
2.1 ZW0301 Specification
MCU
Description
MCU Type
MCU speed
Flash
Optimized 8-bit 8051 MCU core.
16 MHz (integrated clock divider, external crystal frequency is 32MHz)
32kbyte. Programmed through the SPI interface.
SRAM
2kbyte
SRAM (CPU)
MCU Peripherals
256byte
12/8-bit ADC, UART, SPI, 2x16 bit timers one with PWM mode, Watch
Dog Timer, Wake Up Timer, Power-on Reset/Brown-Out Detector,
Triac controller.
Interrupt sources
Internal and external.
Table 2 MCU Specifications
2.2 ZW0301 Single Chip Peripherals
Peripherals
Description
Crystals
System Clock: 32MHz, ±10ppm@25°C, ±10ppm@-15°C to +85°C, 3ppm
aging per 5 years.
Alternative: 32MHz, ±8ppm@25°C, ±8ppm@-15°C to +85°C, 3ppm aging
per year.
Optional Peripherals EEPROM
External PA enabling TX signal amplification up to a maximum of +6dBm
radiated power.
Table 3 External Peripherals
Zensys A/S
Specifications
Page 6 of 14
DSH10756-6
ZM3102N Z-Wave Module Datasheet
2007-10-01
2.3 RF Specification
RF
Description
RF Data rate
9.6 kbps / 40kbps
RF frequency (center
frequency)
EU: 9.6kbps: 868.42 MHz, 40kbps: 868.40 MHz
US: 9.6kbps: 908.42 MHz, 40kbps: 908.40 MHz
HK: 9.6kbps: 919.82 MHz, 40kbps: 919.80 MHz
NZ: 9.6kbps: 921.42 MHz, 40kbps: 921.40 MHz
AUS 9.6kbps: 921.42 MHz, 40kbps: 921.40 MHz
Modulation
Frequency Shift Keying (FSK)
Frequency deviation
Signal coding
Center frequency ± 20kHz
9.6kbps: Manchester Encoded
40kbps: NRZ
RF filter
SAW Filter
US: Center frequency = 908MHz, BW = 20MHz
EU: Center frequency = 868MHz, BW = 20MHz
HK/ANZ: Center frequency = 923.5MHz, BW = 9MHz
RF receiver sensitivity
(typical). Including SAW
filter on ZM3102N.
EU: 9.6kbps: -102dBm
US: 9.6kbps: -102dBm
HK: 9.6kbps: -101dBm
ANZ: 9.6kbps: -101dBm
EU: 40kbps: -98dBm
US: 40kbps: -98dBm
HK: 40kbps: -97dBm
ANZ: 40kbps: -97dBm
RF output power (typical)1
EU: -22.0dBm to -2.0dBm
US: -22.0dBm to -2.0dBm
HK: -23.5dBm to -3.5dBm
ANZ: -23.5dBm to -3.5dBm
Maximum allowed effective
radiated power with external
PA or high gain antenna.
EU : +6.0dBm2
US : -94dBuV/m3 (-1.25dBm)
HK : +6.0dBm2
ANZ : +2.7dBm3
RF Input/Output Impedance 50ohm @ respective EU/US/HK/NZ/AUS frequencies
Range (typical)4
Indoor >30 meters line of sight, in unobstructed environment.
Outdoor > 100 meters line of sight
RF regulatory
US: FCC Part 15
EU: R&TTE Directive 1999/5/EC, EN 300 220-3/2000
HK : HKTA 1035
ANZ : AS/ANZ 4268+A1+A2
1. ZW0301 programmable output power is -20dBm to 0dBm. Typical ZM3102N output power includes a typical SAW
insertion loss. Note that different SAW filters are used for EU, US and HK/ANZ modules.
2. The maximum radiated power level is set by the 200kHz reference spurious level in ZW0301. This limit is applicable at
25 deg.C.
3. Maximum radiated power given by official specifications.
4. Test Conditions: ZM3102N mounted on ZM3120C with quarter wavelength monopole whip antenna mounted on ZW010x
interface module. Radiated power ≈0dBm. Range is valid for both 9.6kbit and 40kbit data rate.
Table 4 RF Specifications
2.4 Electrical Specification
The “Absolute Maximum Ratings” specifies the conditions in which the ZM3102N Z-Wave Module is
guaranteed not to be damaged but correct operations are not guaranteed. Exceeding the “Absolute
Zensys A/S
Specifications
Page 7 of 14
DSH10756-6
ZM3102N Z-Wave Module Datasheet
2007-10-01
Maximum Ratings” may destroy the ZM3102N Z-Wave Module. See “DC Characteristics” for guaranteed
operation limits.
2.4.1 Absolute Maximum Ratings
Electrical
Value
Operating Temperature
Storage Temperature
-15°C to +85°C
-40°C to +85°C
-0.3V to VCC+0.3V
-0.3V
Voltage on input pins
Minimum Operating Voltage (VCC)
Maximum Operating Voltage (VCC)
4V
Table 5 Absolute Maximum Ratings
2.4.2 DC Characteristics
The following DC characteristics are preliminary for the ZM3102N Z-Wave Module.
TA = 25°C, VCC = 3.3V (unless otherwise noted)
Symbol Parameter
Condition
Min
2.1
45
Typ
Max
3.6
Units
V
VCC
Supply Voltage
3.3
RRST1
Reset Pull-up
Resistor
Integrated in ZW0301
200
kΩ
IC
Continuous Output One GPIO
Current
-20
20
mA
mA
ICTOT
Total continuous
output source/sink
current
All GPIO’s
-100
100
Transmitting
(16MHz system
clock)2
Pout = -7dBm(Setting: 1B)3
Pout = -2dBm(Setting: 2A)3
24
36
mA
mA
μA
Receiving
(16MHz system
clock)4
Power Down5
23
ICC
2.5
TOP
HOP
Operating
Temperature
-10
8
85
80
°C
Operating Relative
Humidity
%
1. The integrated Reset pull up is not for external circuitry. If external circuits are connected to the reset pin an
external pull up resistor should be implemented.
2. The transceiver is in transmit mode with the MCU running. The ADC is off.
3. Pout valid for EU and US modules. Pout for HK and ANZ modules are 1dB lower.
4. The transceiver is in receive mode with the MCU running. The ADC is off.
5. The ADC, transceiver, MCU and flash are shut down. The chip can be woken by brownout, an external reset
pulse, external interrupt (if enabled) or periodical wakeup by WUT (if enabled). POR cannot be disabled.
Table 6 DC Characteristics
Zensys A/S
Specifications
Page 8 of 14
DSH10756-6
ZM3102N Z-Wave Module Datasheet
2007-10-01
2.5 Physical Specification
Physical Specification Description
Size
12.5mm. x 13.6mm. x 2.4mm (0.492” x 0.535” x 0.094”)
Weight
7g (with shield)
5g (without shield)
Castellation Notches
18
Table 7 Physical Specifications
2.6 Process Specification
Specification
MSL-3
Description
Moisture Level Verification tested according to JEDEC J-STD-020C
RoHS
Designed in compliance with The Restriction of Hazardous
Substances Directive (RoHS)
Table 8 Process Specifications
Zensys A/S
Specifications
Page 9 of 14
DSH10756-6
ZM3102N Z-Wave Module Datasheet
2007-10-01
2.7 Recommended PCB Footprint Outline
14.30 mm.
6
5
3
2
1
4
10.15 mm.
8.65 mm.
7.15 mm.
5.65 mm.
4.15 mm.
7
8
8.65 mm.
6.90 mm.
18
17
9
10
11
12
13
14
15
16
0 mm.
1.40mm.
1.10mm.
Ø0.55mm.
Ø0.70mm.
Figure 5 Recommend ZM3102N PCB footprint Outline
Zensys A/S
Specifications
Page 10 of 14
DSH10756-6
ZM3102N Z-Wave Module Datasheet
2007-10-01
2.8 Recommended Reflow Profile
Figure 6 Recommended Reflow Temperature Profile
2.9 Application PCB Layout Recommendation
2.9.1 Supply Voltage
As the ZM3102N Z-Wave Module contains a RF transceiver good supply voltage decoupling is
important. Two decoupling capacitors should be placed at the VCC pin (EP11), a 1.0uF and a 100nF
capacitor is recommended. The two capacitors should be placed as close to EP11 as possible and the
capacitors should be placed between the ZM3102N Z-Wave Module supply line and the via that goes to
the power plane as shown in Figure 7.
Figure 7 Placement of decoupling capacitor (power pin, EP11)
Zensys A/S
Specifications
Page 11 of 14
DSH10756-6
ZM3102N Z-Wave Module Datasheet
2007-10-01
2.9.2 Ground Plane
In order to minimize any noise coupling from noisy signals (typically power products) it is recommended
to insert as much ground cobber below the ZM3102N Z-Wave Module as possible on the Application
PCB.
2.9.3 Antenna Interconnection
As the RF signal (EP18) is 50ohm the trace from the EP18 to the matching circuitry (see 1.4.2) must be
50ohm. The Application PCB designer must therefore take the PCB layer structure and thickness into
account when designing the 50ohm trace (either Microstrip or Stripline).
Zensys A/S
Specifications
Page 12 of 14
DSH10756-6
ZM3102N Z-Wave Module Datasheet
2007-10-01
3 SOFTWARE
3.1 SPI Interface
The signals ‘P1.2/MISO’, ‘P1.4/SCK’ and ‘P1.3/MOSI’ signals are in some SW API’s used by the
protocol to store Routing Tables and HomeID in an external EEPROM. When these SW API’s are used,
the Application SW must not use these three signals. Table 9 shows the available SW API’s and in
which the SPI interface is used by the protocol.
SW API
SPI interface used by
Protocol
Slave
Routing Slave
Enhanced Slave
Controller
No
No
Yes
Yes
Yes
Yes
Yes
Static Controller
Installer
Bridge
Table 9 SW API / SPI availability
3.2 EEPROM
Some SW API’s require an external EEPROM to be implemented on the Application PCB for protocol
information storage (like routing table, HomeID etc.). The SPI interface is used to access the EEPROM
and the ‘P1.5’ signal (EP5) is used by the Z-Wave Protocol as EEPROM Chip Select. To assure proper
control of the EEPROM chip select signal during reset and power-up a pull up resistor on the P1.5
should be implemented as shown in Figure 8.
+3.3V
+3.3V
R10
10K
U3
8
1
3
7
5
2
6
4
C11
33nF
VCC
CS
WP
HOLD
SI
SO
SCK
GND
P1.5
MOSI
MISO
SCK
EERPOM
Figure 8 External EEPROM
Only a part of the EEPROM is used for protocol data storage, the Application SW can use the remaining
memory area using an API call (see [3]). For the EEPROM memory area requirements of the protocol
API please refer to the documentation for the Z-Wave Controller code selected (see [3]).
Zensys A/S
Software
Page 13 of 14
DSH10756-6
ZM3102N Z-Wave Module Datasheet
2007-10-01
4 REFERENCES
Always refer to latest document revision.
[1]
[2]
Zensys, DSH10717, Datasheet, ZW0301 With Developers Kit v5.0x
Zensys, APL10312, Application Note, Programming the 200 and 300 Series Z-Wave Single Chip
Flash
[3]
[4]
Zensys, INS10247, Instruction, Z-Wave ZW0102/ZW0201/ZW0301 Appl. Prg. Guide v5.00
Zensys, APL10045, Application Note, Antennas for Short Range Devices
Zensys A/S
References
Page 14 of 14
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