etusivu toimisto-ohjelmat sudoku wlan-antennit pikkuprojekteja elektro-palomäki arkisto
Wlan antenna 2.4 GHz Do-it-Yourself
Comments, questions, visit to the guestbook
Antenna model #1
I think this is my best wlan antenna. More effective antenna may even increase the ETSI standards we have in Europe
Antenna model #2
Very easy construction waveguide type antenna
Helix antenna
A link to an australian page. I've built and tested. A circle polarized antenna is a good choice in private wlan networks. If used with horizontal or vertical antenna there becomes 3 dB extra loss.
Quad  antenna A simple double-quad antenna from
I've built but not included it to my comparison test.
Wlan Antenna Cabling 
Antenna cable and accessories
Comparison test
Comparison of the antennas.
Photos from antenna prototypes
Impedance Conversion
Impedance conversion method with the quarter wavelength microstrip
Wlan World Web

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PIC microcontroller project: how to build a remote controlled potentiometer
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PIC18-series multiplication and division routines
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Monophase motor speed lowerer from 50Hz to 1/3th, 1/5th, ..
Squirrel motor as a generator
Build a reserve power generator. Some theory and practice
MAX1463 Assembler Program
Free Maxim MAX1463 Assebler / Debugger / Programmer

12.Sept.2001 created
20.Sept.2001 test page added
31.Dec.2001 quad antenna added
29.March.2002  links added
25 May 2003 link added

Martti Palomaki marska