Demodulators
DSPCon provides a variety of demodulation
software products for AM, FM, USB and LBS applications. Each software product in
the demodulation family is optimized for a variety of digital signal processors
and comes equipped with a front-end complexifier component that transforms read
data into band-shifted complex data. The software is designed as a library (with
supporting header files) that can be called from the user’s ‘C” or assembly language
application.
Model 5920-001—AM Demodulator
This software is used for a wide variety of applications ranging from straight AM
radio demodulation with drop receiver input to FDM demultiplexing for space applications.
Overview:
- Performs AM demodulation and flexible output gain
- C library
- Output SNR of better than 50 dB
- Input bandwidths of up to 800kHz
Specifications:
- Provides AM demodulated output with an SNR of >50 dB
- Provides output gain from -231 to +231 in floating point format
- Accepts packed I&Q (In-phase and Quadrature) input at rates up to 800K samples/second
on a processor running at 50 MHz
- Provides 16 bits of signed AM demodulated results that are placed in upper half
of a 32-bit DSP word which results from the AM demodulation of the I&Q input signal
and the application of a user-supplied output gain factor
Model 5920-002—FM Demodulator
This software is used for a wide variety of applications ranging from straight FM
radio demodulation with drop receiver input to FDM demultiplexing for space applications.
Overview:
- Performs FM demodulation and flexible output gain
- C library
- Output SNR of better than 50 dB
- Input bandwidths of up to 400kHz
Specifications:
- Provides FM demodulated output with an SNR of >50 dB
- Provides output gain from -231 to +231 in floating point format
- Accepts packed I&Q (In-phase and Quadrature) input at rates up to 400K samples/second
on a processor running at 50 MHz
- Provides 16 bits of signed FM demodulated results that are placed in upper half
of a 32-bit DSP word which results from the FM demodulation of the I&Q input signal
and the application of a user-supplied output gain factor
Model 5920-003—USB Demodulator
Overview:
- Performs USB demodulation and flexible output gain
- C library
- Output SNR of better than 50 dB
- Input bandwidths of up to 100kHz
Specifications:
- Provides FM demodulated output with an SNR of >50 dB
- Provides output gain from -231 to +231 in floating point format
- Uses complex band pass filter to create USB data stream
- Accepts packed I&Q (In-phase and Quadrature) input at rates up to 100K samples/second
on a processor running at 50 MHz
- Provides 16 bits of signed USB demodulated results that are placed in upper half
of a 32-bit DSP word which results from the USB demodulation of the I&Q input signal
and the application of a user-supplied output gain factor
Model 5920-004—LSB Demodulator
Overview:
- Performs LSB demodulation and flexible output gain
- C library
- Output SNR of better than 50 dB
- Input bandwidths of up to 100kHz
Specifications:
- Provides FM demodulated output with an SNR of >50 dB
- Provides output gain from -231 to +231 in floating point format
- Uses complex band pass filter to create LSB data stream
- Accepts packed I&Q (In-phase and Quadrature) input at rates up to 100K samples/second
on a processor running at 50 MHz
- Provides 16 bits of signed LSB demodulated results that are placed in upper half
of a 32-bit DSP word which results from the LSB demodulation of the I&Q input signal
and the application of a user-supplied output gain factor