1. A transformer, for being configured in a wiring substrate, comprising:
a first plane coil, comprising a plurality of first loops, wherein the plurality of the first loops comprises a first inner loop and at least two first outer loops; and
a second plane coil, comprising a plurality of second loops, wherein the plurality of the second loops comprises a second inner loop and at least two second outer loops,
wherein a first bundle constituted by the first inner loop and the at least two adjacent first outer loops and a second bundle constituted by the second inner loop and the at least two adjacent second outer loops are stridden one over another, the first inner loop has a first segment and a second segment physically separate from the first segment, the second inner loop has a third segment and a fourth segment physically separate from the third segment, and the first segment, the second segment, the third segment and the fourth segment are on the same plane,
wherein the first segment of the first inner loop is positioned between the fourth segment of the second inner loop and one of the second outer loops and the third segment of the second inner loop is positioned between the second segment of the first inner loop and one of the first outer loops.
2. The transformer according to claim 1, wherein the wiring substrate comprises an insulation layer, each of the first loops of the first plane coil comprising:
a first general segment;
a first crossing segment, wherein the first general segment and the first crossing segment are positioned at two sides of the insulation layer; and
a first conductive via, configured passing through the insulation layer for connecting the first general segment and the first crossing segment; and each of the second loops of the second plane coil comprising:
a second general segment, wherein the second general segment and the first general segment are positioned substantially in a same plane;
a second crossing segment, wherein the second general segment and the second crossing segment are positioned at two sides of the insulation layer; and
a second conductive via, configured passing through the insulation layer for connecting the second general segment and the second crossing segment,
wherein projections of the first crossing segments of the first bundle at the plane are crossed with the second general segments of the second bundle, and projections of the second crossing segments of the second bundle at the plane are crossed with the first general segments of the first bundle.
3. The transformer according to claim 2, wherein the first general segment of at least one first loop is crossed with a projection of the first crossing segment of at least another first loop at the plane, and the insulation layer is positioned between the first general segment of the at least one first loop and the first crossing segment of the at least another first loop.
4. The transformer according to claim 2, wherein the second general segment of at least one second loop is crossed with a projection of the second crossing segment of at least another second loop at the plane, and the insulation layer is positioned between the second general segment of the at least one second loop and the second crossing segment of the at least another second loop.
5. A method for adjusting a mutual inductance, for adjusting a mutual inductance between a first plane coil and a second plane coil of a transformer, wherein the first plane coil comprises a plurality of first loops, and the second coil comprises a plurality of second loops, each of the first loops comprises at least one first inner loop and at least one first outer loop, and each of the second loops includes at least one second inner loop and at least second outer loop, wherein the first inner loop and the second inner loop are stridden one over another, the method comprising:
adjusting positions of the first inner loops and the second inner loops for varying an overlapping area between the first inner loops and the second inner loops, while maintaining positions of the first outer loops and the second outer loops unchanged.
6. The method for adjusting a mutual inductance according to claim 5, wherein when one of the first inner loops is positioned between two second loops, positions of the first inner loop and the two second loops are adjusted.
7. The method for adjusting a mutual inductance according to claim 5, wherein when one of the second inner loops is positioned between two first loops, positions of the second inner loop and the two first loops are adjusted.
8. A transformer, for being configured in a wiring substrate, comprising:
a first plane coil, comprising a plurality of first loops;
a second plane coil, comprising a plurality of second loops,
wherein a first bundle constituted by at least two adjacent first loops and a second bundle constituted by at least two adjacent second loops are stridden one over another, one of the at least two first loops has at least two physically separate first segments, while one of the at least two second loops has at least two physically separate second segments, the first segments are directly adjacent to the second segments and the first and second segments are on the same plane, the wiring substrate comprises an insulation layer, and each of the first loops of the first plane coil comprising:
a first general segment;
a first crossing segment, wherein the first general segment and the first crossing segment are positioned at two sides of the insulation layer;
a first conductive via, configured passing through the insulation layer for connecting the first general segment and the first crossing segment; and each of the second loops of the second plane coil comprising:
a second general segment, wherein the second general segment is positioned substantially in a same plane with the first general segment and electrically disconnected with the first general segment;
a second crossing segment, wherein the second general segment and the second crossing segment are positioned at two sides of the insulation layer; and
a second conductive via, configured passing through the insulation layer for connecting the second general segment and the second crossing segment,
wherein projections of the first crossing segments of the first bundle at the plane are crossed with the second general segments of the second bundle, and projections of the second crossing segments of the second bundle at the plane are crossed with the first general segments of the first bundle.
9. The transformer according to claim 8, wherein a second segment of the second loops is positioned between a fifth segment of one of the first loops and a sixth segment of another one of the first loops which is adjacent to said one of the first loops, the fifth segment, the sixth segment and the second segment are on the same plane, and the second segment is directly adjacent to the fifth segment and the sixth segment.
10. The transformer according to claim 8, wherein the first general segment of at least one first loop is crossed with a projection of the first crossing segment of at least another first loop at the plane, and the insulation layer is positioned between the first general segment of the at least one first loop and the first crossing segment of the at least another first loop.
11. The transformer according to claim 8, wherein the second general segment of at least one second loop is crossed with a projection of the second crossing segment of at least another second loop at the plane, and the insulation layer is positioned between the second general segment of the at least one second loop and the second crossing segment of the at least another second loop.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A bimodal polyethylene composition having a density of 0.940 gcc or more, the composition comprising a high molecular weight polyethylene component and a low molecular weight polyethylene component wherein the high and low molecular weight polyethylene components are formed in a single reactor, wherein:
the composition qualifies as a PE 100 material such that in accordance with ISO 1167 a pipe formed from the composition that is subjected to internal pipe resistance has an extrapolated stress of 10 MPa or more when the internal pipe resistance curve is extrapolated to 50 or 100 years in accordance with ISO 9080:2003(E);
the composition has a melt strength of 18 cN or greater; and
the ratio of the weight average molecular weight of the high molecular weight component (MwHMW) to the weight average molecular weight of the low molecular weight component (MwLMW) of the composition is greater than 15:1 and less than 28:1.
2. The composition of claim 1 in which the melt strength is greater than 20 cN.
3. The composition of claim 1 in which the melt strength is greater than 22 cN.
4. The composition of claim 1 in which the complex viscosity at 0.01 s-1 is greater than 3.5\xd7105 Pa-s.
5. The composition of claim 1 in which the complex viscosity at 0.1 s-1 is greater than 1.5\xd7105 Pa-s.
6. The composition of claim 1 having an overall PDI of 15 to 40.
7. The composition of claim 1 in which the high molecular weight component is present in an amount of 45 to 60 wt. .
8. The composition of claim 1 in which the average molecular weight (Mw) of the low molecular weight polyethylene component is from 5,000 to 35,000.
9. The composition of claim 1 in which the average molecular weight (Mw) of the high molecular weight polyethylene component is from 400,000 to 700,000.
10. The composition of claim 1 having an FI (121) of from 4 to 10 g10 min.
11. The composition of claim 1 in which the high molecular weight polyethylene component has a density of 0.945 gcc or less.
12. The composition of claim 1 in which the low molecular weight polyethylene component has a density of 0.940 gcc or more.
13. The composition of claim 1 in which the high molecular weight polyethylene component comprises a polyethylene that comprises a comonomer being butene, hexene, octene, and mixtures thereof, wherein the comonomer is present in the amount of more than 1.0 wt of the polyethylene.
14. The composition of claim 1 in which the low molecular weight polyethylene component comprises a polyethylene that comprises a comonomer being butene, hexene, octene, and mixtures thereof, wherein the comonomer is present in the amount of less than 3.0 wt of the polyethylene.
15. The composition of claim 1 wherein the extrapolated stress is 10.5 MPa or more when extrapolated to 50 or 100 years in accordance with ISO 9080:2003(E).
16. The composition of claim 1 wherein the high and low molecular weight polyethylene components are formed in gas phase polymerization.
17. The composition of claim 1 wherein the composition is made from polymerization conducted in the presence of a bimodal catalyst system that comprises a metallocene based catalyst.
18. The composition of claim 1 wherein the high and low molecular weight polyethylene components are formed from polymerization conducted in the presence of a bimodal catalyst system that comprises bis(2-trymethylphenylamido)ethyl)amine zirconium dibenzyl; bis(2-(pentamethyl-phenylamido)ethyl)amine zirconium dibenzyl; (pentamethylcyclopentadienyl)(n-propylcyclopentadienyl)zirconium dichloride; (tetramethylcyclopentadienyl)(n-propylcyclopentadienyl)zirconium dichloride; (tetramethylcyclopentadienyl)(n-propylcyclopentadienyl)zirconium dimethyl; bis(2-pentamethylphenylamido)ethyl)zirconium dibenzyl; or bis(2-pentamethylphenylamido)ethyl)zirconium dimethyl.