Title :
Millimeter-wave holographic power splitting/combining
Author :
Shahabadi, Mahmoud ; Schünemann, Klaus
Author_Institution :
Arbeitsbereich Hochfrequenztech., Tech. Univ. Hamburg-Harburg, Germany
fDate :
12/1/1997 12:00:00 AM
Abstract :
It is shown that holography offers a novel solution to the problem of millimeter-wave power splitting and combining. With the help of an approximate model, we demonstrate that a hologram will work as a beam-splitting element, provided that it records the holographic image of the beams to be generated. To verify this observation, a beam splitter consisting of a hologram and an antenna array is analyzed by means of a rigorous network model. This analysis serves to find the optimum structure of the beam splitter. Measurements on a realized prototype of the beam splitter prove the possibility of achieving a high splitting efficiency, a high inter-element isolation, and a relatively large bandwidth. Flexibility in the orientation and the number of outputs is another outstanding feature of this holographic approach
Keywords :
holography; millimetre wave imaging; power combiners; power dividers; antenna array; bandwidth; beam splitter; efficiency; inter-element isolation; millimeter-wave holography; network model; power combining; power splitting; Gratings; Holographic optical components; Holography; Millimeter wave circuits; Millimeter wave technology; Optical beam splitting; Phased arrays; Power dividers; Resonance; Solid state circuits;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on