the number of sub gaps increases table i______________________________________ gap lengths in u03bcm locations for number of gaps n u03bcm 1 3 5 9 19______________________________________ 1 8 0 01 1 6 0 02 1 4 0 03 1 2 0 04 1 0 0 05 0 8 0 02 0 06 0 6 0 04 0 07 0 4 0 033 0 06 0 08 0 2 0 05 0 066 0 08 0 09 0 0 0 10 0 10 0 10 0 10 0 10 0 2 0 05 0 066 0 08 0 09 0 4 0 33 0 06 0 08 0 6 0 04 0 07 0 8 0 02 0 06 1 0 0 05 1 2 0 04 1 4 0 03 1 6 0 02 1 8 0 01 u03c3 sub g u03bcm 0 10 0 20 0 30 0 50 1 00 u03b7 ferrite 0 133 0 23 0 30 0 40 0 53improvement u03b7 ferrite with 6 4 8 7 11 13 6respect to ferritehead with g sub o 0 08 in db u03b7 tfh sup 0 038 0 07 0 100 0150 0 24improvement u03b7 tfh with 7 4 10 5 14 18respect to tfh withg sub.