Analog Switches as Mixers

• U.S. Patent No. 6,230,000 The Tayloe patent
• Ultra Low Noise, High Performance, Zero IF Quadrature Product Detector and Preamplifier by Dan Tayloe (PDF, 1015K)
• A Fairchild FST3125 used as high-level mixer (Warning: QSL.NET)
• SM 5 BSZ - I/Q mixer for direct conversion radio
  Optimised direct conversion receiver for 144MHz an interesting audio LNA
  ...taken from Linrad home page on SM5BSZ's informative but sligthly confusing home page
• NO-TUNE SSB/CW TRANSCEIVER FOR 1296, 2304 AND 5760MHz
  and NO-TUNE SSB/CW TRANSCEIVER FOR 10GHz by Matjaz Vidmar, S53MV
• VFO universel 1.8 - 3.5 - 7 - 14 - 28 MHZ signaux carrés
• An high dynamic range QSD front end by Marco, IK1ODO. Important observations regarding noise and spurious emissions of real switches (FST3125)
• Simple HCMOS LF upconverter
• New low-power single sideband circuits Philips Application Note AN1981 (PDF, 91K)
• Multiband Direct Conversion Receiver experiments Yahoo! Groups : vkzlqrp Message 193
  Progress on HF Direct Conversion Receiver Yahoo! Groups : vkzlqrp Message 195
• From rec.radio.amateur.homebrew (found while searching for "FST3125"):
  Terminating HC4066 Mixer
  rx frontend & filter
• A CMOS Buffer for VFOs
• An experimental HF direct conversion receiver a 74hc4066 design (PDF, 190K)
• High-Performance Direct-Conversion Receivers The R1 by KK7B (QST Aug.1992; PDF, 7540K)
• The R2 Single Sideband Direct Conversion Receiver, Revisited: The R2a (Glen Leinweber) no mixers, but an audio-LNA and a phase shifter
• R2 Preamp an earlier version of the text above
• Polyphase Filters by Mike Gingell, KN4BS
• Phase-Shift Network Analysis and Optimization by Kevin Schmidt, W9CF also available as PDF (304K)
• Understanding and Designing Sequence Asymmetric Polyphase Networks by Pim Niessen PA2PIM (PDF, 965K). For references and an Excel spreadsheet see Polyphase networks
• HCMOS Gates Make Frequency multipliers (PDF, 27K)
• The Spartan Sprint Special 40m CW Transceiver a 74HC4053 design by VE3SMA.
• Deluxe Direct Conversion Receiver (Warning: QSL.NET) by KD1JV based on one the above. Still looks very unpromising...
• HF Receiver (G0UPL) ...die Konkurrenz holt auf!
• Direct Conversion HF Transceiver with DDS LO by OH7SV and OH2NLT. Very informative! Tips for polyphase filters, sideband filters, etc.
• A Software Defined Radio (SDR) for the Masses... has a tayloe mixer as frontend
• The QRP2001 Project Home Page a Tayloe/Polyphase design by G0BBL, G0XAR, G8BTR and M0PUB. Including a spreadsheet for polyphase filters (in section "Main Board")
• HDR-2005 Reciever Workbench by Chris Hirt. Mit Linksammlung (inkl. SDR + DSP: siehe "References") die meine eigentlich überflüssig macht...
• AM Demodulator for I/Q Receivers and
  New Ideas in AM Radio Receiver Design a straightforward patent by Edward C. Forster

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Last update: 2007-01-28, Gottfried Ira ira@oe1ira.at
http://www.oe1ira.at/sl/mix.html