References / Links

Receiver/Transceiver
BuildingBlocks
Articles/Theory/Papers
SDR Software
References/Sources

Receiver/Transceiver

The QRP2001 Project Home Page
» www.qrp2001.freeserve.co.uk
Direct Conversion HF Transceiver
» www.nikkemedia.fi/hohtola/dc-trcvr/DCradio.htm
Direct Conversion HF Receiver
» www.nikkemedia.fi/juma-rx1/index-en.html
Very High Performance Image Rejecting Direct Conversion Receiver
» www.norcalqrp.org/files/AustinNC2030Presentation.pdf
N7VE Firefly Transceiver
» www.qrpkits.com/files/SchematicsFFSDRv1-1large.jpg
HF Receiver
» http://www.hanssummers.com/radio/polyphase/index.htm
Experimental Polyphase Receiver
» www.hanssummers.com/electronics/gallery/4/index.htm
Direct Conversion HF SSB Transceiver
» 9y4ar.tripod.com/
General coverage receiver 0-50Mhz
» users.tkk.fi/~jwagner/electr/dc-rx
Homebrew SDR frontends
» www.qsl.net/yu1lm/homebrew.htm
» www.yu1lm.qrpradio.com/
WB6DHW - Software Defined Transceiver
» users.wildblue.net/wb6dhw/SDTCVR.html
RT2: HF transceiver core
» lekstutis.com/Artie/Ham/Projects/RT2.html
"The merrygo method". SingleSideBand Generator/Demodulator
» ja2kai.ld.infoseek.co.jp/merigo.htm

BuildingBlocks

An high dynamic range QSD front end
» www.spin-it.com/sdr/IK1ODO_SDR1.html
I/Q mixer for direct conversion radio
» www.nitehawk.com/sm5bsz/linuxdsp/iqmixer.htm
Analog Wide Band Audio Phase Shift Networks
» home.att.net/~wa1sov/technical/allpass/allpass.html
Polyphase networks
» home.planet.nl/~niess153/Polyphase_networks.htm
AD9951 DDS
» www.radioamatore.it/i0cg/add9951.html

Articles/Theory/Papers

Software Defined Radio Articles
» http://www.flex-radio.com/articles_files/index.htm
A Low-noise, High-performance Zero IF Quadrature Detector/Preamplifier
» rfdesign.com/mag/radio_lownoise_highperformance_zero/
Ultra Low Noise, High Performance, Zero IF Quadrature
Product Detector and Preamplifier
» www.norcalqrp.org/files/Tayloe_mixer_x3a.pdf
Thoughts on a Double Balanced Tayloe Detector
» qrp.kd4ab.org/2001/010518/0001.html
A Digital AM FM SSB Demodulator
» thierry.leconte.chez.tiscali.fr/demod.html
Philips application note AN1980.
» www.semiconductors.philips.com/acrobat/applicationnotes/an1981.pdf
Phase-Shift Network Analysis and Optimization
» fermi.la.asu.edu/w9cf/articles/phase/phase.html
Passive polyphase filters
» http://users.vnet.net/gingell/polyphas/polyphas.html
SSB by the Fourth Method?
» ironbark.bendigo.latrobe.edu.au/~rice/ssb/ssb.html
Analog and Digital Modulation
» home.online.no/~lilandh/techp.htm
AM Demodulator for I/Q Receivers (GB 2295513)
» ecforster.netfirms.com/GB2295513/Doc1.html

SDR Software

SDRadio - a Software Defined Radio
» digilander.libero.it/i2phd/sdradio/index.html
The GNU Software Radio
» www.gnu.org/software/gnuradio/
LinuxDSP - Linrad
» nitehawk.com/sm5bsz/linuxdsp/linrad.htm
PowerSDR
» www.flex-radio.com/download_files/
G8JCF's Software Defined Radio
» www.g8jcf.dyndns.org/g8jcfsdr_drt1/g8jcfsdr_drt1.html
Rocky: SDR software for SoftRock40
» www.dxatlas.com/rocky/
M0KGK SDR Decoder Software "KGKSDR"
» www.m0kgk.co.uk/sdr/index.php

References/Sources

Interesting list of different types of SDRs
» f4dan.free.fr/sdr_eng.html
Analog Switches as Mixers
» www.oe1ira.at/sl/mix.html
DSP - Digital Signal Processing
» www.arrl.org/tis/info/dsp.html
The MailArchive - soft_radio
» www.mail-archive.com/soft_radio@yahoogroups.com/index.html
HIRT, Christian: "Hardware Defined Radio. Un recepteur a conversion directe evolue."; ONDES MAGAZINE No 29, Dec 2006 / Jan 2007, S. 20 - 24
» http://www.ondesmagazine.com

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