title: Extended lattice filters enabled by four-directional couplers.
abstract: Novel lattice-filter structures consisting of four-directional couplers are introduced, analyzed, and discussed. Four-directional couplers are discussed, and energy-conservation relations in a field-wave application are derived. A thick linear lattice filter is presented and studied as a simple extension to the traditional lattice. A two-dimensional lattice structure is also introduced and studied. Transfer functions are derived and discussed for several examples.
authors.affiliation: Erik Jonsson School of Engineering and Computer Science, University of Texas at Dallas, Richardson, Texas 75083, USA. dlm@utdallas.edu
authors.forename: Duncan L
authors.initials: DL
authors.lastname: MacFarlane
authors.forename: Jian
authors.initials: J
authors.lastname: Tong
authors.forename: Chintan
authors.initials: C
authors.lastname: Fafadia
authors.forename: Vishnupriya
authors.initials: V
authors.lastname: Govindan
authors.forename: L Roberts
authors.initials: LR
authors.lastname: Hunt
authors.forename: Issa
authors.initials: I
authors.lastname: Panahi