wireless data solutions · 2009-12-03 · fm/fsk modulator mod out mod in resonator synth tank osc...
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Presented By :- Tom Mailey and David Falp
CML CML Low Power Wireless Modem Low Power Wireless Modem
SolutionsSolutions
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OverviewOverview• CML Corporate Review• CML High Speed Modems
• FX909B GMSK Modem• CMX969 ARDIS Modem
• CML Wireless RF products• CMX017 Transmitter• CMX018 Receiver
• Wireless Data Market review• Product Integration• Applications
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Consumer Microcircuits LtdConsumer Microcircuits Ltd
Company OverviewCompany OverviewGroup Headquarters, Oval Park, Langford, Maldon, Essex. CM9 6WG
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Consumer Microsystems Plc. GroupConsumer Microsystems Plc. Group•Two ISO9001 Design & Manufacturing companies
CML Microcircuits Ltd & MX-COM
•40 Graduate Design Engineers World-wide
•60 Countries supported by local Distributors
•ASIC design centre utilising CMOS, Bi-CMOS &Bi-Polar technologies - Integrated Micro
Systems Ltd (IMS)
•Sales & Support centre in Singapore servicing Far Eastern countries – CML Singapore Pte
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Wireline Telecom
Wireless Data
RF Products
Two-Way Mobile Radio
Military Communications
CMLCML’’ss Key Market AreasKey Market Areas
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Market BreakdownMarket BreakdownTelecomsTelecoms
Terrestrial systems•Feature Phones, PABX, Cordless Phones,
Payphones, Fax machines, Modems
Rural Telecoms•Wireless local loop systems, Pair Gain systems
Cellular Telephones •NMT, AMPS, TACS•C-Net, R2000 systems
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Market BreakdownMarket BreakdownWireless DataWireless Data
All wireless packet data standards•Mobitex, RD-LAP CDPD, TETRA-PDO
Private data networks •Public utility monitoring systems•Industrial Telemetry systems•Point of sales terminals•Wireless stock control
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Market BreakdownMarket BreakdownMobile RadioMobile Radio
Mobile radio audio processing PMR systems based on
•CTCSS, Sub audio signalling•DCS, Sub audio signalling•Selcall, Sequential Tone signal
Trunked Mobile Radio•Audio processing to ETS 300 086•FFSK modems for MPT1327 and other
standards
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Market BreakdownMarket BreakdownMilitary/Gen PurposeMilitary/Gen Purpose
Military Communications•CVSD codecs for Eurocom D1IA8,
Mil-Std 188-113
General Purpose Products•Tone generators•Tone detectors•Voice coding
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CML Semiconductor DivisionCML Semiconductor DivisionEngineering Design CapabilityEngineering Design Capability
Engineers40 Graduate design engineers world-wide
Design ExpertiseDigital, mixed signal and pure analogue
DC to infrared design expertise
ProcessesCMOS, Bi CMOS, Bipolar and GaAs
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CML High Speed ModemsCML High Speed Modems
• FX909B GMSK Packet Data Modem• CMX969 ARDIS ModemHigh speed transfer of data over narrow-band
wireless links
FEC, CRC and burst error protection ensures robust data tranmission
Easy integration with CMX017 & CMX018 RF chipset
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FX909B (GMSK)FX909B (GMSK)
• Rx and Tx Modes from 4kb/s to 38.4kb/s• Full Data Packet Framing• Full ‘Mobitex’ Compatability incl. R14N
short-block frames• Checksum Generation and Checking• Parallel uC interface
(Targeted at Mobitex and general high speed wireless data applications)
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FX909B FX909B GMSK ModemGMSK Modem
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CMX969 ARDIS Modem CMX969 ARDIS Modem
• DataTAC, ARDIS, Dual Mode RD-LAP and MDC Systems
• 4-Level FSK / GMSK Modulation• MDC 4.8kb/s, RD-LAP 9.6kb/s to
19.2kb/s• Low Power (2mA at 3V) with Powersave
option(Targeted at MDC4800
and RD-LAP)New
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CMX017 & CMX018 RF ChipsetCMX017 & CMX018 RF Chipset
• CMX017 :- RF Transmitter
• CMX018 :- RF ReceiverExcellent compromise between performance
and integration
Globally compatible operation:- 865 to 965 MHz
Excellent integration possibilities with FX909B and CMX969 modems
Wide range of low power wireless applications
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CMX017 :CMX017 :-- FeaturesFeatures• Direct FM/FSK Modulator• Adjustable Modulator Output Power• Integrated Power Amplifier with
Output Power up to +20dBm• Integrated VCO• Off chip main varactor and resonator for best phase
noise• Buffered VCO output• Highly stable power control• Low Power 3V Operation• Power Down Mode (<10µA)• 28 Pin SSOP Package
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CMX017 UHF CMX017 UHF TransmitterTransmitter
FM/FSKMODULATOR
MODOUT
MODIN
RESONATOR SYNTH
TANK OSCOUT
MODENABLE
PAENABLE
PAIN
PAOUT
IPA OUTGAIN
POWER AMPLIFIER
STAGE 1 STAGE 2
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CMX018 :CMX018 :-- FeaturesFeatures• Double Conversion Superhet Receiver • Low Noise Amplifier with Switched Gain• High Performance UHF Down-Converter • Integrated VCO• Narrow-band and Wide-band FM / FSK• Analogue FM and Digital FSK Demodulator• Suitable for Data rates of <500 kb/s• High Sensitivity Receiver -104dBm • Receiver Noise figure 4dB• High Dynamic range receiver• 2.7V Operation• Power Save Mode (<10µA)• 28 Pin SSOP Package
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CMX018 UHF Receiver
BPF915MHz
BPF915MHz
BPF70.875MHz
BPF10.7MHz
LIMITER
RSSILIMDEC 1
LIMDEC 2
LIMOUT QUAD IN
DETOUT
GAIN(16/-6 dB)
TANK
ENABLE
FM/FSKDEMODULATOR
LOW NOISEAMP
MIXER 1
VCOBUFFERED
VCO
OSC OUT
EXTERNALSYNTHESISER
COLPITTSOSCILLATOR
PHASESHIFT
NETWORK
MIXER 2
EXTERNALLC CIRCUITRY
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Wireless Data Market ReviewWireless Data Market Review
• Frequency Allocations• Spectral range• Transmission & Receive
Considerations• RF products & modems integration• Applications
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PanPan--European Frequency European Frequency AllocationsAllocations
• 863-864 MHz identified for cordless headphone applications - CEPT Recommendations T/R 25-08, T/R 72-01, T/R 75-02 refer
• 865-868 MHz identified for cordless microphone applications - CEPT Recommendations T/R 25-08, T/R 72-01, T/R 75-02 refer
• 868-870 MHz identified for future Short Range Devices (Data) applications. CEPT Recommendation T/R 70-03 refers
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Busy SpectrumBusy Spectrum
• Broadcast Television band extends to 854 MHz
• ETACS analogue cellular starts at 870MHz (UK, Ireland, Spain, Italy, Austria) - mobile transmit
• GSM allocated from 890MHz to 915MHz - mobile transmit
• All these services generate strong interfering signals
• Disruption to these services would be very noticeable
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Important Transmitter Important Transmitter ParametersParameters
• High Output power• Most single IC transmitters are 5mW to
25mW output power – CMX017 = 100mW (+20dBm selectable)
• Low Spurious emissions• Radiated spurii affect how good a neighbour
you are – CMX017 has low spurious emissions• Low transmitted wide band noise
• Frequency synthesizers often transmit high levels of wide band noise
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Important Receiver Important Receiver parametersparameters
• High Sensitivity• Ability to resolve weak signals over the
receivers own internal noise – CMX018 minimum detectable signal –117dBm
• High Selectivity• Ability to choose one signal out of the multitude
of radio signals present in a frequency band
• Good Signal Handling• Ability to resolve weak signals in the presence
of strong interfering signals both in band and out of band
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Integrated productsIntegrated products• High performance, narrow band (25 kHz) radio modem
with Forward Error Correction, adaptive power output control and two point modulation operating at 19200 b/s
CMX017
CMX018
AntennaSwitch
FX839 (1/2)
RSSI
VCO Steering
VSWRVoltsTemp
Frequency Synthesizer
VCOCMX9694-Level FSK Modem
FX839 (1/2)
Power control
µController for packet handling
and control
Data in
Data out
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ApplicationsApplications
• Barcode readers.• Trackside safety systems.• Packet data systems e.g.
Mobitex, RD-Lap, Data-Tac.• Industrial equipment
control/metering.• Computer network radio links.• POS terminals.
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ApplicationsApplications
• Vehicle security systems• Vehicle and equipment tracking and
monitoring systems.• Voice encoder systems.
and many others !!.
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ApplicationsApplications
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And Finally In Conclusion...And Finally In Conclusion...
• CML offers an excellent entry into high speed wireless modem markets
• High performance products with low power requirement
• Easy to design-in and use• Available now and in production