Mobile Phone Antenna Design

- GPS/BT/WiFi combination antenna: dual-band PIFA occupying 200mm²x6mm with 5mm

spacing from metallic and ferromagnetic materials

- Audio phone jack connected GPS/BT/WiFi/FM combo chip

- FM short antenna

- Combo antenna trace should not be overlapped with audio jack or USB connector, otherwise

it would cause FM de-sense.

- GPS antenna: VSWR < 2, total efficiency > 50%, efficiency in hemisphere > 30%

- BT/WiFi antenna: VSWR < 2, total efficiency > 50%

- WiFi: 14dBm output, sensitivity = -73dBm (54Mbps), -90dBm (2Mbps)

- Bluetooth: 8dBm output, EDR sensitivity = -90dBm (2Mbps), -82dBm (3Mbps)

- GPS: -130dBm (C/N = 38dB) at antenna output