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design mobile flash sticker antenna? diode antenna LED? - RF Cafe
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Post subject: design mobile flash sticker antenna? diode antenna
LED? Posted: Wed Jul 20, 2005 9:09 am
I want to know how the flash
sticker antenna are made? The flash antenna which you can buy and stick
at the outside (cover) of your mobile and which flash when you have
got a mobile call (size about 2cmx1cm).It looks that the antenna is
meander like and serie connected with 2 diodes and then in serie with
LED:s, in a closed loop on one layer.
How is the antenna designed?
Is it an monopole or what and which frequency is it designed for 1800MHz
etc? How to make the antenna so small and broadband allowing an LED
or something to be connected and feeded? How is the antenna matched?
What output voltage for a circuit like this could you expect
(single diode)?
I would appreciate as much information as possible
about the antenna design etc for being able to make a similar circuit.
Posted 11/12/2012
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