Abstract
Recently, Substrate Integrated Waveguide (SIW) techniques have been noticed for millimeter wave devices in microwave applications. In this paper, we are developing a wide band directional 3 dB coupler with a phase of 90̊ phase delay in the range of 30-40 GHz based on periodic vias and multi hole structure. For achieving this wide bandwidth multi-section coupler is designed based on the theoretical modeling and the simulation result is compared with HFSS and CST with two different numerical methods show good performance with low insertion and return loss, broad operational bandwidth and high isolation. A fractional bandwidth is about 28.5 %.
Highlights
Millimeter wave range has been noticed for its compact size of the devices and less microwave loss in range of Extremely high frequency (EHF) in the electromagnetic spectrum from 30 to 300 gigahertz and the band of 38.6 - 40.0 GHz is implemented for licensed high-speed microwave data links at USA region [1]
The Substrate Integrated Waveguide (SIW) is attractive for the extension of microwave and millimeter wave applications such as cavity filters [3], antennas [4], phase shifter [5], power dividers [6] and Diplexers [7]
The substrate integrated waveguide is suggested at high frequency applications and exactly it is working as same as rectangular waveguide that the sidewalls are replaced by two rows of metallic posts [8]
Summary
Millimeter wave (mm) range has been noticed for its compact size of the devices and less microwave loss in range of Extremely high frequency (EHF) in the electromagnetic spectrum from 30 to 300 gigahertz and the band of 38.6 - 40.0 GHz is implemented for licensed high-speed microwave data links at USA region [1]. In the mm-wave regime, the compromise is often between accurate and expensive CNC or EDM machining of waveguide technology on one hand, and inexpensive but higher-loss SIW circuitry on the other. The substrate integrated waveguide is suggested at high frequency applications and exactly it is working as same as rectangular waveguide that the sidewalls are replaced by two rows of metallic posts [8]. The Substrate Integrated Waveguide technology usually has been used in mm-wave systems and has advantages such as high Q-factor, compact profile, low cost platform and easy fabrication [9]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
