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Antenna gain for silicon IC

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Lathas

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I have seen many papers with antenna gain for on chip silicon based antenna in negative dB values? Why is it so? How is the antenna useful without a positive gain?
 

Lathas said:
I have seen many papers with antenna gain for on chip silicon based antenna in negative dB values? Why is it so?
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generally because the antenna dimensions are only a tiny fraction of a wavelength (at the required freq) and therefore have 0 or less than 0dB gain


How is the antenna useful without a positive gain?
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it still radiates, but not very well ... OK for very short range comms .... Bluetooth and other uses
 

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