A method of handling security key change for a user equipment in a wireless communication system includes applying a radio resource control procedure to activate key change, where the radio resource control procedure covers two conditions where the key change is accompanied with an authentication and key agreement run and without an authentication and key agreement run.

 
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> MIXER WITH LOCAL OSCILLATOR FEED-FORWARD AND METHOD OF MIXING SIGNALS WITH LOCAL OSCILLATOR FEED-FORWARD

> RADOME AND METHOD OF PRODUCING THE SAME

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