Difference between revisions of "QRP Labs High Performance SDR Receiver"
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* Three modules mount together | * Three modules mount together | ||
| − | ** | + | ** [http://qrp-labs.com/receiver Radio Module] |
| − | + | *** High performance Receiver module uses a Quadrature Sampling Detector (QSD), also known as a Tayloe Detector | |
| − | *** Mixer is arranged as a double-balanced mixer for maximum performance | + | *** [https://www.onsemi.com/pdf/datasheet/fst3253-d.pdf FST3253] Mixer is arranged as a double-balanced mixer for maximum performance |
*** There is a transmit/receive switch onboard. Low noise LM4562 op-amps are used in instrumentation amplifier configuration to provide excellent common mode noise rejection | *** There is a transmit/receive switch onboard. Low noise LM4562 op-amps are used in instrumentation amplifier configuration to provide excellent common mode noise rejection | ||
*** The audio output of the module is isolated using two 600:600-ohm transformers to reduce or eliminate the ground loop problems which can easily occur in SDR systems | *** The audio output of the module is isolated using two 600:600-ohm transformers to reduce or eliminate the ground loop problems which can easily occur in SDR systems | ||
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** [[RF Band Pass Filters|Band Pass Filter]] | ** [[RF Band Pass Filters|Band Pass Filter]] | ||
*** Can be used with a [https://qrp-labs.com/ultimatelpf.html Switched Bandpass filter board] for multiband operation | *** Can be used with a [https://qrp-labs.com/ultimatelpf.html Switched Bandpass filter board] for multiband operation | ||
| − | ** Polyphase filter | + | ** [https://qrp-labs.com/polyphase Polyphase filter] |
*** Polyphase network plug-in module kit which cancels the unwanted sideband and produces a single sideband (SSB) output | *** Polyphase network plug-in module kit which cancels the unwanted sideband and produces a single sideband (SSB) output | ||
* The receiver requires a local oscillator (LO) input at 4x the receive frequency | * The receiver requires a local oscillator (LO) input at 4x the receive frequency | ||
Revision as of 15:12, 20 November 2021
Features
- Three modules mount together
- Radio Module
- High performance Receiver module uses a Quadrature Sampling Detector (QSD), also known as a Tayloe Detector
- FST3253 Mixer is arranged as a double-balanced mixer for maximum performance
- There is a transmit/receive switch onboard. Low noise LM4562 op-amps are used in instrumentation amplifier configuration to provide excellent common mode noise rejection
- The audio output of the module is isolated using two 600:600-ohm transformers to reduce or eliminate the ground loop problems which can easily occur in SDR systems
- The module is designed to directly drive a stereo input sound-card
- Receiver board has a socket for the standard QRP Labs Band Pass Filter kit which can be routed to an external bandpass filter switch card
- Band Pass Filter
- Can be used with a Switched Bandpass filter board for multiband operation
- Polyphase filter
- Polyphase network plug-in module kit which cancels the unwanted sideband and produces a single sideband (SSB) output
- Radio Module
- The receiver requires a local oscillator (LO) input at 4x the receive frequency
- The receiver module is sized 80 x 37mm
Radio Links
- High performance SDR receiver module
- Polyphase network module - QRP Labs
- RF_Band_Pass_Filters
- Clocks Generator
Silkscreen
