Before revision: 203–204 center|Multi-band PIFA designs, A : nested PIFA patch antennas, B : PIFA patch antenna with two spur lines producing a tri-band antenna, C : a similar tri-band antenna with C-slots, D : tightly meandered inverted-F Applications Inverted-F antennas are widely used in compact hand-held wireless devices where space is at a premium.
After revision: 203–204 center|Multi-band PIF designs, A : nested PIFA patch antennas, : PIFA patch antenna with two spur lines producing a tri-band antenna, : a similar tri-band antenna with C-slots, : tightly meandered inverted-F Applications Inverted-F antennas are widely used in compact hand-held wireless devices where space is at a premium.