Radio frequency chip makers tune in to smartphone race

By Sayantani Ghosh and Sruthi Ramakrishnan (Reuters) - Radio frequency chip makers are set to gain as Samsung Electronics Co Ltd and Apple Inc unveil ever more sophisticated smartphones and tablets to battle for the No. 1 spot in the global mobile devices market. Investors and analysts say they like shares of RF Micro Devices Inc, Skyworks Solutions Inc and Avago Technologies Ltd - companies that make the chips that enable gadgets to send and receive data wirelessly. Samsung unveiled its latest flagship phone, the Galaxy S4, in New York on Thursday. ...

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