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2009-02-11
Design and Analysis Considerations of 4-GHz Integrated Antenna with Negative Resistance Oscillator
By
Progress In Electromagnetics Research B, Vol. 13, 111-131, 2009
Abstract
The purpose of this paper is to present a complete design and analysis of a new integrated balanced transmitter operated at 4 GHz using microstrip technology. It comprises a 4-GHz two-port negative resistance oscillator and a microstrip-patch antenna resonated at 4 GHz. Three different modules are designed and analyzed. The first one used a Lange coupler as a power splitter while the second and third used a one (two)-section branch couplers. The components of the three modules are designed using full-scale computer simulation program named with MSDES; performed by the author; which takes fully into account all the discontinuities included in the microstrip lines, while the modules are analyzed and optimized using APLAC V7.61 software. The design methodologies of the two-port negative resistance oscillator and microstrip patch antenna are introduced and explained. The analyses of the designed modules show a better efficiency and good performance. The modules give a transmit-antenna gain of 15.7 dB with antenna beam widths 91.7o and 18.2o in E-and H-planes, respectively. The complete schematic diagrams of the transmitter modules are drawn. These modules can be used in satellite communication, Doppler and other radars, active and semi-active seekers, radio altimeters, missile technology, weapon fuzing, manpack equipment, remote sensing, feed elements in complex antennas, satellite navigation receivers, and biomedical radiators.
Citation
Said H. Ibrahim, "Design and Analysis Considerations of 4-GHz Integrated Antenna with Negative Resistance Oscillator," Progress In Electromagnetics Research B, Vol. 13, 111-131, 2009.
doi:10.2528/PIERB08122901
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