Overview on Companies :

Semiconductor Manufacturers http://www.bgs.nu/sdw
Webscope http://www.webscope.com/elx/companies.html
Chip Directory http://www.ideal.net.au/chipdir or http://www.blee.net/chipdir

Component Manufactures :

Advanced Micro Devices http://www.amd.com
Agilent (formerly HP) http://www.agilent.com
Altera http://www.altera.com
AMD http://www.amd.com
Amkor/Anam http://www.amkor.com
Anadigics http://www.anadigics.com
Analog Devices http://www.analog.com
ATC http://www.atceramics.com
AT&T http://www.att.com
AVX http://www.avxcorp.com
Burr-Brown http://www.burr-brown.com
Celeritek http://www.celeritek.com
Coilcraft http://www.coilcraft.com
Conexant http://www.conexant.com
Cyrix http://www.cyrix.com
Digital Equipment Corp. http://www.digital.com
Dolby Laboratories http://www.dolby.com
EiC http://www.eiccorp.com
Fairchild http://www.fairchildsemi.com
Fujitsu http://www.fujitsu.com
General Electric http://www.ge.com
Harris http://www.semi.harris.com
Hewlett Packard http://www.hp.com or http://www.agilent.com
Hitachi http://www.hitachi.com
IBM http://www.chips.ibm.com
Infineon (formerly Siemens Semiconductors) http://www.infineon.com
Intel http://www.intel.com
International Rectifier http://www.irf.com
Lattice http://www.lattice.com
Linear-Technologie http://www.linear-tech.com
Lucent http://www.lucent.com
M/A-COM, Inc. www.macom.com
Matsuhita http://www.mei.co.jp
Maxim http://www.maxim-ic.com
Microsemi (Special diodes, etc.) http://www.microsemi.com
Mini-Circuits http://www.minicircuits.com
Mitsubishi http://www.mitsubishi.com
Motorola http://www.design-net.com or http://www.mot.com
Murata http://www.iijnet.or.jp/murata
Maury Microwave http://www.maurymw.com
National Semiconductor http://www.national.com or http://www.nsc.com
NEC http://www.nec.com or http://www.euronec.com
OKI Semiconductors http://www.okisemi.com
Plessey http://www.gpsemi
Philips Semiconductors http://www.philips.com or http://www.oakridge.com/philips_semiconductors/newspage.html or http://www.semiconductors.philips.com
Raytheon http://www.raytheon.com
RF Micro Devices http://www.rfmd.com
Rockwell http://www.rockwell.com
Samsung http://www.samsung.com or http://www.samsungsemi.com
Sanyo http://www.sanyo.com
SGS Thomson http://www.st.com
Silicon Graphics http://www.sgi.com
Tektronics http://www.tek.com
Telequarz http://www.telequarz.de
TEMIC http://www.temic.de or http://www.temic.com
Teccor Electronics http://www.teccor.com
Texas Instruments http://www.ti.com
Toko http://www.tokoam.com
Toshiba http://www.toshiba.com or http://www.toshiba.co.jp
TRW http://www.trw.com
Triquint http://www.triquint.com
Unitrode http://www.unitrode.com
Varta http://www.varta.de
VLSI http://www.vlsi.com
Xilinx http://www.xilinx.com
Zilog http://www.zilog.com

Other Manufactures :

ABB http://www.abb.com
Alcatel http://www.alcatel.com
Ascom http://www.ascom.com
Daimler-Benz http://www.daimler-benz.com
Ericsson http://www.ericsson.com or http://www.ericsson.nl
Fluke http://www.fluke.com
Focus Microwave http://www.focus_microwave.com
Hewlett-Packard Test&Measurement http://www.tmo.hp.com
Kodak http://www.kodak.com
Kyocera http://www.kyocera.com
Lecroy http://www.lecroy.com
Maury Microwave http://www.maurymw.com
National Instruments http://www.natinst.com
Nokia http://www.nokia.com
Panasonic http://www.panasonic.com
Rogers http://www.rogers-corp.com
Rohde & Schwarz http://www.rsd.de
Schlumberger http://www.slb.com
Seagate http://www.seagate.com
Sharp http://www.sharp-usa.com
Sony http://www.sony.co.jp or http://www.sony.com
Sun Microsystems http://www.sun.com
Wandel & Goltermann http://www.wg.com
Wavetek http://www.wavetek.com
Yokogawa http://www.yokogawa

Instituts, Universities, etc. :

Advanced Television Systems Commitee http://www.atsc.com
ANSI http://www.ansi.org
Duisburg University http://hlt3.uni-duisburg.de
DIN Deutsches Institut für Normung http://www.din.de
FCC (USA) http://www.fcc.gov
Andreas Kassler's Homepage http://frodo.informatik.uni-ulm.de/Mitarbeiter/Kassler
IMST http://www.imst.de
Japans Ministry of Trade and Industry (MITI) http://www.miti.go.jp
MPEG/MP3 http://www.mpeg.org/MPEG/mp3.html
MP3/Fraunhofer-Institut http://www.iis.fhg.de/amm/techinf/layer3/index.html
MP3 (deutsch) http://www.mp3-world.net
MP3 (englisch) http://www.mp3.com
PTB Physikalisch-Technische Bundesanstalt http://www.ptb.de
Telekom http://www.telekom.de
TU Hamburg-Harburg (SPICE) http://www.tu-harburg.de/et1/emv/et1kb/download.html

Patents :

Deutsche Patentdatenbank http://www.fiz-karlsruhe.de/stn.html
Deutsches Patentamt http://www.deutsches-patentamt.de
Europäisches Patentamt http://www.epo.co.at/epo
IBM http://www.patents.ibm.com
US-Patente http://patents.uspto.gov
United States Patent and Trademark Office http://www.uspto.gov

Publishers, Journals, Overviews :

Artech-House http://www.artech-house.com
Archiv der Nobelpreisträger http://www.almaz.com/nobel/
Bayrischer Rundfunk (mit Computerclub) http://www.br-online.de
CDMA-Techniken http://www.cdg.org/home.html
Dt. Amateur-Radio Club http://www.darc.de
EDN http://www.ednmag.com
EE-Times http://www.eetimes.com
Electronic Design http://www.penton.com/ed
ELEKTRONIK http://www.elektronik.de or http://www.elektroniknet.de
Edinburgh Engineering Virtual Library http://www.eevl.ac
Engineering Village http://www.ei.org
Electronic Libraries Program http://www.ukoln.ac.uk
ElectronicsWeekly http://www.electronicsweekly.co.uk
Electrical World http://www.electricalworld.com
Electronic Component News http://www.ecnmag.com
Electronic Industries Japan http://www.eiaj.org
EMV : EMCnet http://www.emcnet.com
Engineering Links http://www.dtbsware.com
Engineering Information Inc. http://www.ei.org
Forum für Technik http://www.forengruppe.de/technik
Franzis-Verlag (Weka-Gruppe) http://www.franzis.de
GSM http://www.gsmdata.com
GSM World http://www.gsmworld.com
Heise Online http://www.ix.de
How Stuff Works http://www.howstuffworks.com
IBM Micronews http://www.chips.ibm.com/micronews
IEE Institution of Electrical Engineers http://www.iee.org.uk
IEEE-Spectrum http://www.spectrum.ieee.org
IEEE Journal of Solid-State Circuits http://www.ieee.org/pub_preview/ssc_toc.html
industry.net http://www.industry.net
Info-Dienst Wissenschaft http://www.tu-clausthal.de/idw
Innovationen http://www.ideas.wis.net/inno-links.html
Internet für Ingenieure http://www.ramge.de/ingenieur/index.html
ISO International Standardisation Organization http://www.iso.ch
Kluwer Academic Publisher http://www.wkap.nl
Microwave Journal Access Page http://www.mwjournal.com
Mobilfunk http://www.inka.de/~maya/mobil.htm
Noble-Publishing http://www.noblepub.com
Prentice-Hall http://www.prenhall.com or http://www.phptr.com
Questel Orbit http://www.questel.orbit.com
RF Globalnet (very good) http://www.rfglobalnet.com
Science http://www.sciencemag.org
Science & Engineering http://www.senn.com
Scientific Web http://www.uni-frankfurt.de/~stst/science.html
SMD-Bauelemente SMT-Net http://www.smtnet.com
SPOT Software Archiv http://spot..fho-emden.de
Springer-Verlag http://www.springer.de
TDS-NET Components Database http://www.tds-net.com
Technik : Tech-Online http://www.techonline.com
Telekommunikation http://www.interst.de/online/tkglossar/index.html
UMTS http://www.umts-alliance.com
Van Nostrand Reinhold http://www.vnr.com
VDE Verband Deutscher Elektrotechniker http://www.vde.de
VDI-Nachrichten http://www.vdi-nachrichten.com
Weka-Gruppe (DMV-Franzis) http://www.wekanet.de
Wireless Design Online http://www.wirelessdesignonline.com
John Wiley & Sons http://www.wiley.com
III-V Semiconductors http://www.eecs.umich.edu/dp-group/III-V

Commercial Software :

Analogy (Saber) http://www.analogy.com
Ansoft (HFSS) http://www.ansoft.com
Aplac http://www.aplac.com or http://www.aplac.hut.fi
Applied Wave Research http://www.appwave.com
Arden Technologies http://www.ardentech.com
Borland http://www.borland.com
Cadence http://www.cadence.com
CompactSoftware (SuperCompact) http://www.comsoft.com or http://www.ansoft.com
ComponentSource http://www.componentsource.com
Eagleware http://www.eagleware.com
Interactive (EWB) http://www.interactive.com
Intusoft (ISSPICE) http://www.intusoft.com
Mentor http://www.mentor.com
Meta-Software (HSPICE) http://www.metasw.com
IEEE Microwave Theory and Techniques Society Home Page http://www.ieee.org/mtt/mtt.html
Micrsosim (PSpice, now Orcad) http://www.microsim.com or http://www.orcad.com
Microsoft GmbH - Homepage http://www.microsoft.de
Optotek (MMICAD) http://www.optotek.com
Protel http://www.protel.com
Quickfield (EM Simulation) http://www.tera-analysis.com
SOS-Software http://www.sos-software.de
Spectrum Software (Microcap) http://www.spectrum-soft.com
Thermal Engineering Associates http://www.thermengr.com
Thermal Solutions Inc. http://www.sauna.com

Shareware and Freeware :

ArchiePlex http://cuiwww.unige.ch/archieplexform.html
Australian Shareware http://www.ganggang.com.au
Biondo Software http://www.bsoftware.com
ct-Shareware http://www.heise.de/ct/shareware
Delphi Pages http://www.delphipages.com
Download http://www.download.com
Filemine http://www.filemine.com
Freeware32 http://www.freeware32.com
Hotfiles http://www.hotfiles.com
Jahn Schumacher http://www.192.41.31.218
Jumbo http://www.jumbo.com
Leo http://www.leo.org/archiv
Mac Shareware http://www.pht.com/info-mac
Linux Shareware http://www.prihateam.fi/linux/software.html
Schaft http://www.schaft.com
Shareware http://www.shareware.com
Softseek http://www.softseek.com
Torry´s Delphi Page http://www.torry.ru
Tucows (Internet Software) http://www.tocows.com
Windows 95 http://www.windows95.com
Windows Shareware http://www.winfiles.com
Winsite http://www.winsite.com

Trainings :

Europractice http://cie.it.dtu.dk/tbps
MEAD http://www.mead.ch or http://www.epfl.ch
RF Domain RF/microwave/wireless training


Distributors :

ACI Electronics (USA) http://www.aci-elec.com
Allied Electronics (USA) http://www.allied.avnet.com
Bürklin http://www.buerklin.de
Conrad http://www.conrad.de
Digikey (USA) http://www.digikey.com
EBV Electronics ttp://www.ebv-electronics.com
Electronic World (USA) http://www.electronic-world.com
Hamilton-Hallmark (USA) http://www.hh.avnet.com
Jameco (USA) http://www.jameco.com
JDR Microdevices (USA) http://www.jdr.com
Reichelt http://www.reichelt.de
Schuricht http://www.schuricht.de
SE - Special Electronic http://www.spezial.de
Smith (USA) http://www.smithwes.com
Solid State Inc. (USA) http://www.solidstateinc.com
Thor Electronics (USA) http://www.thorel.com
Völkner http://www.voelkner.de