An RF Multiple Beam-Forming Technique
- 1 April 1962
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IRE Transactions on Military Electronics
- Vol. MIL-6 (2), 179-186
- https://doi.org/10.1109/IRET-MIL.1962.5008426
Abstract
An RF beam-forming matrix is described which forms ``n'' simultaneous beams from an ``n'' element array in a passive and theoretically lossless manner. The principle of operation is explained using some simple matrix configuration. A general expression for the far-field pattern of any beam is derived and then used to study the positions of beam peaks, the position of beam nulls, the crossover level between beams and the frequency sensitivity of beam positions. This matrix provides a uniform illumination of the array aperture; however, simple beam combining techniques will yield tapered illuminations. An experimental 16-element beam-forming matrix which operates at 900 Mcps is described, and results of RF and antenna measurements on the matrix are presented.Keywords
This publication has 5 references indexed in Scilit:
- Strip-line 3-db directional couplersPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- Multidirectional antenna - A new approach to stacked beamsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- A theoretical limitation on the formation of lossless multiple beams in linear arraysIEEE Transactions on Antennas and Propagation, 1961
- Multiple beams from linear arraysIEEE Transactions on Antennas and Propagation, 1961
- A New Class of Broad-Band Microwave 90-Degree Phase ShiftersIEEE Transactions on Microwave Theory and Techniques, 1958