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Is tuning a quad band antenna a lot different?

 
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wolberine
Antenna Theory Regular


Joined: 01 Mar 2011
Posts: 35

PostPosted: Tue Dec 13, 2016 5:26 am    Post subject: Is tuning a quad band antenna a lot different? Reply with quote

My only experience is in single band antennas (434MHz and 868MHz).

I'd like to integrate a quad band chip antenna into a project I'm working on. Frequencies would be 850, 900, 1900, 2100Mhz (2G/3G bands).

Are there a lot of differences when it comes to tuning? I'm guessing it's similar except I'd need to look out for the optimal match over all frequencies instead of the optimal match for a single frequency
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admin
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Joined: 03 Jan 2007
Posts: 201

PostPosted: Wed Dec 14, 2016 7:28 pm    Post subject: Reply with quote

Quad band antennas are really dual band: they have a lowband and highband (850-900 & 1900-2100). So you match the lowband with a lowband matching circuit (series C and shunt L) and the highband with a highband matching circuit (shuntC and series L).
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