Find us

Skills

Skills 

• DSP software: Real-time and algorithm development.

• Baseband hardware: micro processors, VHDL, FirmASICTM and DSP platforms.

• RF design: linearisation (especially Cartesian loop), high performance linear and conventional receivers and power amplifiers.

• International Standardisation: active in European and Worldwide standardisation.

• Product Development

• Demonstrators activities and feasibility studies

Technology

• PMR

• TETRA / TETRA Release 2

• Marine Radio (AIS and DSC)

• DMR & dPMR

• APCO Project 25

• Mobitex

• Data Modems

• Wireline Technology

Read our Capability Statement (pdf)

Radio

Our team has accumulated many years of experience in a radio product designs covering transmitters, receivers and local oscillators. An example of our world leading expertise is Cartesian Loop linearisation.

Baseband

Our hardware solutions include development of multi-processor platforms, DSP, audio circuits, vocoders and modems. A recent development combines a FirmASIC^TM baseband processor and a RALCWI 2.4kbps Vocoder.

Software

Our team specialises in real-time signal processing software. We have designed and developed a range of modem solutions for wireline and wireless communications. Extensive expertise in ‘C’ and assembler were both code size and execution speed is important.

Standardisation

Currently involved in ETSI and IEC committees covering technologies such as Marine AIS, TETRA and Digital Mobile Radio. See our Standardisation Glossary.

Product Development

Some example products that Applied Technology have been involved in designing are:

• AIS Class A Transponder
• project: RF design
• status: in production, IEC 61993-2 approved
• Railway signalling communication system
• project: modem implementation
• in production, EN 300 113 approved
• Electricity Meter communication sub-system
• project: Analogue, baseband  and modem design, FirmASIC^TM prototype.
• status: in production, follow-on products in development.

Data Modems

Technology developed by Applied Technology is being used across the world for wire-line and wireless data modems. We have developed a range of advanced spectrally efficient Trellis coded 8FSK modulation for next generation high-throughput wireless modem utilising conventional ‘narrow-band’ channels.

 Wireline Technology

 Line modems supporting such standards as V.32 and V.32bis. We also have extensive experience of DTMF including optimisation of algorithms to ensure minimum false detects.  

Mobitex

Mobitex is just one example of a wireless data modem. Applied Technology has produced designs for EN 300 113 compatible modems.

APCO Project 25

 C4FM modem development meeting the requirements of TIA/EIA-102.CAAB.

PMR

We have extensive experience in PMR terminal design and also modem design for PMR signalling systems such as DTMF, CTCSS, XTCSS, Selcall and DCS.

TETRA

We have been involved in the development of the TETRA Release 2 standards for high-speed data since the beginning of it’s development. Our Cartesian loop designs comfortably meet the transmitter requirements for QAM modulation.

European PMR Standardisation Glossary

EN                   European Norm, for Telecommunications these standards are produced by ETSI. Such standards can form part of European Harmonised standards

ETSI                European Telecommunications Standards Institute

ERM                ETSI Technical Committee on ‘Electromagnetic compatibility and Radio Matters’.

OJ EU             Official Journal of the European Union.

TC                   Technical Committee – Technical body within the ETSI organisation

TS                   Technical Standard produced by ETSI.

EN 300 086   Standard for analogue voice radios. (ETSI Committee ERM TG-DMR)

EN 300 113   Standard for data radios in 12.5kHz, 20kHz and 25kHz channels, applicable for DMR. (ETSI Committee ERM TG-DMR)

EN 300 296   Analogue voice products not having an antenna connector, applicable to PMR446 products. It is planned to revise this standard in 2008. (ETSI Committee ERM TG-DMR)

EN 300 392   TETRA (ETSI Committee TC-TETRA and various sub-groups)

EN 300 394   TETRA Conformance Test Specification  (ETSI Committee TC-TETRA and various sub-groups)

EN 301 166   Standard for Analogue and digital transmission for channels spacing of less than 10kHz, applicable dPMR products. (ETSI Committee ERM TG-DMR).

EN 302 561   Data products for 25kHz, 50kHz, 100kHz and 150kHz channels. This is a candidate HEN to be listed in the OJ EU and will be applicable to generic data systems and TETRA release 2. (ETSI Committee ERM TG-DMR)

TS 102 361    Standard for DMR, two-slot TDMA, 12.5kHz. (ETSI Committee ERM TG-DMR)

TS 102 490    Protocol standard for dPMR, 6.25kHz FDMA. (ETSI Committed TG-DMR)

All European (ETSI) standards are available free from www.etsi.org.