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Trace Length to Antenna Feed Point - RF Cafe Forums

The original RF Cafe Forums were shut down in late 2012 due to maintenance issues. Original posts:

Amateur Radio | Antennas | Circuits & Components | Systems | Test & Measurement


matt
Post subject: trace length to Antenna feed point.
Unread postPosted: Tue Jan 18, 2005 9:42 am

Is the trace length between 50ohm balun and a 50 ohm ceramic patch antenna @2.4GHz critical? The design is CPW Ground with Width = Gap=0.2mm.

Providing I maintain the 50ohm trace in between, does the actual trace lengths matters? Should I avoid 0.25Wavelengths?

Thanks


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STEVE
Post subject:
Unread postPosted: Tue Jan 18, 2005 1:12 pm

If the whole thing were lossless and perfectly matched then it doesnt matter. We know this is not going to be true and you have two problems:-

1. Losses on the trace which will increase with length
2. Radiation from / Susceptibility of trace

Suck it and see



Posted  11/12/2012

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