FM Antenna Design Challenges

Learn how to solve FM antenna design challenges in portable devices.
White Paper - Silicon Labs
FM radio has witnessed an explosion of interest from the market for its applications in mobile and personal media players; however, the traditional FM design approach requires a long antenna, such as a wired headphone, which limits its usefulness and usability.
This white paper explores:
  • an FM radio receiver solution that enables the antenna to be integrated or embedded inside the portable device enclosure, making the headphone cable optional, and
  • techniques for maximizing sensitivity, including maximizing efficiency at the resonant frequency and maximizing efficiency across the FM band with a tunable matching network.
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