dr Ali Farahbakhsh
Employment
- Profesor uczelni ze stop. nauk. dr at Department of Microwave and Antenna Engineering
Social media
Contact
- ali.farahbakhsh@pg.edu.pl
Profesor uczelni ze stop. nauk. dr
- Department of Microwave and Antenna Engineering
- Faculty of Electronics, Telecommunications and Informatics
Publication showcase
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Design of Compact and Wideband Groove Gap Waveguide-Based Directional Couplers
This paper proposes a compact cross-shaped groove gap waveguide structure for creating wideband and compact directional couplers with different coupling levels. Groove gap waveguide technology is applied to overcome fabrication challenges of printed and hollow waveguide structures in high frequency bands. The validity of the novel concept is demonstrated through the design and evaluation of several compact broadband directional...
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A gap waveguide-based mechanically reconfigurable phase shifter for high-power Ku-band applications
This paper presents a novel design of a low-loss, reconfgurable broadband phase shifter based on groove gap waveguide (GGW) technology. The proposed phase shifter consists of a folded GGW and three bends with a few pins forming the GGW and one bend attached to a movable plate. This movable plate allows for adjustments to the folded waveguide length, consequently altering the phase of electromagnetic waves. The advantage of GGW...
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Improved Bandwidth of Microstrip Wide-Slot Antenna Using Gielis Curves
The development of a broadband printed wide-slot antenna based on Gielis curves is presented in this article. The printed wide-slot antenna can be conveniently reshaped to achieve ultra-wideband performance by using superformula. The distinct advantage of employing the superformula in design of wide-slot antenna lies in its ability to define nearly any geometric shape including non-standard, complex and non-intuitive for the wide-slot...
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