indiaco
Member level 1
- Joined
- Apr 10, 2004
- Messages
- 39
- Helped
- 0
- Reputation
- 0
- Reaction score
- 0
- Trophy points
- 1,286
- Location
- Down South...
- Activity points
- 321
hi people, i ´ve been working latelly on microstrip p@ath antennas, and altough i´ve followed a coupled of books i still have some doubts about feeding...more precisely:
I´ve fed the p@atch with an inset feed, the proper width should have been 28 mm (by fomula & software: appcad;linegauge), but i ended up matching the antenna with an 18 mm microstrip and i did try several widths in between. The first one is a 50 ohms line, the second is about 64 ohms. (results from IE3D)
But if i feed it with a coaxial probe (50 ohms) at the exact same position as the inset microstrip it turns out matching the antenna, and damn 64 is NOT 50 !!! :evil:
Why is this happening ? all clues welcome
thanks in advance.
I´ve fed the p@atch with an inset feed, the proper width should have been 28 mm (by fomula & software: appcad;linegauge), but i ended up matching the antenna with an 18 mm microstrip and i did try several widths in between. The first one is a 50 ohms line, the second is about 64 ohms. (results from IE3D)
But if i feed it with a coaxial probe (50 ohms) at the exact same position as the inset microstrip it turns out matching the antenna, and damn 64 is NOT 50 !!! :evil:
Why is this happening ? all clues welcome
thanks in advance.
