نتایج جستجو برای: substrate integrated waveguide siw
تعداد نتایج: 423249 فیلتر نتایج به سال:
The majority of up-to-date conceived composite right-handed / left-handed (CRHLH) transmission lines (TL) are open configurations derived from microstrip technology. We present here a closed CRHLH architecture derived from the H10 rectangular hollow waveguide mode, which is realised in substrate-integrated waveguide (SIW) technology and is thus easy to fabricate. The dispersion characteristic i...
A microstrip-fed air-substrate-integrated waveguide (ASIW) slot array with high efficiency and low cost is presented. The design cuts out the substrate material within SIW, replaces vias metallic sidewalls, uses a simple microstrip line-waveguide transition to feed array. Radiating slots are cut on 5-mil brass-plate, which covers top of cutout resemble hollow structure. This implementation prov...
This paper shows a comparative study of Multi U–shaped slot antenna with the substrate integrated waveguide(SIW) fed patch antenna. By cutting four asymmetrical U-slots, we can make U-shaped patch antenna. Advantages of this structure are the simple feed, single layer structure, simple structure of antenna, one more degree of freedom can be achieved by the asymmetry of U-slot arm. The design gu...
A set of hybrid microstrip patch and semi-circular cavity antennas is introduced. The semi-circular cavity is implemented using Half-mode Substrate Integrated Waveguide (HMSIW) technique. Different shapes of patch include rectangular, semi-circular and equilateral triangular are excited using proximity effect by the circular SIW cavity at its TM010 mode of operation. The whole structures have b...
We attempt to design and fabricate of a 4×4 Butler matrix for short-millimeter-wave frequencies by using the microfabrication process polytetrafluoroethylene (PTFE) substrate-integrated waveguide (SIW) synchrotron radiation (SR) direct etching PTFE addition metal film sputter deposition. First, dimensions SIW rectangular through-holes G-band (140-220 GHz) operation are determined, cruciform 90 ...
Abstract A new waveguide feeding scheme of a rectangular DRA based upon the folded substrate integrated concept is presented. The most important characteristics this antenna are good radiation efficiency above 87% at high frequencies which operates and half transverse size its in comparison with other schemes such as SIW waveguide. simulated results show an impedance bandwidth 6.7% from 25.25 t...
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