RF-Building Blocks

CML's range of Radio Frequency (RF) products provides a selection of modular building blocks for implementation as part or all of the 'wireless front-end' of a wide range of constant and non-constant envelope modulation systems.

The new RF Building Block range is designed to provide flexible, high-performance I Cs required for HF/VHF/UHF professional radios, wireless data terminals, wireless microphones and marine and avionics radio systems.
With an operating frequency ranging down to 20 MHz and up to 1 GHz, the RF products offer: a combination RF transceiver, a separate RF modulator, demodulator and a Cartesian feedback loop transmitter for efficiency and transmitter PA  linearisation.
CML's RF devices are designed for use in a wide range of both narrowband and wideband applications, in the wireless data and digital PMR markets.

Product Categories:

Receivers

Transmitters

Transceivers

Glossary
APCO - A suite of standards for digital radio communications for use by federal, state/province and local public safety agencies in North America.
CFBL - Cartesian Feedback Loop: The section of a RF control system that uses feedback and self-correction to adjust its operation in-line with the desired signal output.
DCR / DCRx - Direct Conversion Receiver. Where the wanted RF signal is mixed down to a low-IF or zero-IF frequency.
DQPSK - Differential Quadrature Phase Shift Keying: a modulation technique in which the carrier can assume one of four phases, or symbol, represented by 2 bits.
FFSK - Fast Frequency Shift Keying: also known as Minimum Shift Keying (MSK) - A form of frequency modulation.
FSK - Frequency Shift Keying: a form of frequency modulation used to transmit two states of a signal each as separate frequencies.
GFSK - Gaussian Filtered Frequency Shift Keying: an FSK modulation scheme with a Gausian filtered output signal.
GMSK - Gaussian Minimum Shift Keying: a type of FSK that uses pre-modulation Gausian filtering to achieve high data rates in an FM communications channel bandwidth.
Modulation - The process of modulation of a carrier or signal for transmission, also the result of this process.
MSK - Minimum Shift Keying: continuous phase FSK modulation, also known as FFSK..
QAM - Quadrature Amplitude Modulation: a hybrid amplitude/phase modulation technique that requires less bandwidth than normal amplitude or phase modulation techniques.
RF - Radio Frequency: generally accepted to range from about 3k to about 300,000MHz.

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