vswr bridge design
Hi,
you will find below a link to a VSWR bridge by HA8ET. The model HA8ET-033B is dedicated to antenna measurement (needs higher power level, since it has a diode detector), but the author has an other model HA8ET-034 which is usefull for measurements with a spectrum analyser with tracking generator. However, this one is not described on the webpage, but as I know HA8ET, if you contact him, he will help with all the documantation. The HA8ET-034 can be easily modified for 75 ohm, so you can use it in your 75 ohm system
hxxp://www.pollak.sulinet.hu/elektro/hidak/hidak.htm
Also some technical details about bridges:
hxxp://www.gie-rf.de/sc1599/Webdownload/GIE6620A_1GHz_Low_Cost_VSWR_Messbr%FCcke_75Ohm.pdf
hxxp://www.gie-rf.de/sc1599/Webdownload/AN6620A_1.PDF
rgds, Al