An adjustable delay line phase shifter is configured as a microstrip transmission line having a MN matrix of conductive elements mounted on a insulating substrate. The squares are connected together using conductive members, such as gold ribbon or wire bonds, in a pattern that produces a desired amount...http://www.google.de/patents/US6734757?utm_source=gb-gplus-sharePatent US6734757 - Adjustable delay line phase shifter using a selectable connected conductive
