手机天线设计

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手机天线设计
Antena  General Design Guidelines
1. Keep antenna away from moveable Camera and Flexible PCB.
2. Keep battery and battery metal cage a minimum of 5mm away from antenna space or antenna element.
3. Use inductors on speaker wires if speaker is inside antenna space.
4. Keep counter balance vibrators away from antenna.
5. Keep antenna volume sensible.
6. Keep antenna contact pad size to a minimum
7. No ground on any layers below the contact pad neither inside nor on
the opposite side of the PCB.
8. No ground on layers inside the PCB below matching circuit.
9. Antenna contact clip length to be at minimum
10. Distance between antenna contact and shielding cans etc. to be
minimum 2 to 4mm (parasitic effect)
11. RF switch and amplifier or duplexer to be as close as possible to the matching circuit are a General Design Guidelines
12. No conductive paint (EMI shield)around antenna area or close to its
contact
13. Minimize length of Flex circuit that connects the upper folder on clam shell phones
14. Flex circuit connection to flip should be covered with ground layer on
both sides which connects well to main ground.

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