A low-profile single-layer leaky wave slotted waveguide array for mobile DBS reception

1993 ◽  
Author(s):  
J. Hirokawa ◽  
M. Ando ◽  
N. Goto ◽  
N. Takahashi ◽  
T. Ojima ◽  
...  
Keyword(s):  
Single Layer ◽  
Waveguide Array ◽  
Leaky Wave ◽  
Low Profile ◽  
Slotted Waveguide

Longitudinal slotted waveguide array feed networks

2018 ◽  
Vol 10 (4) ◽  
pp. 512-517 ◽  
Author(s):  
J. Soleiman Meiguni ◽  
S. Keshavarz Haddad ◽  
A. Hosseinbeig
Keyword(s):  
Double Layer ◽  
Layer Structure ◽  
Single Layer ◽  
Side Lobe ◽  
Center Frequency ◽  
Side Lobe Level ◽  
Waveguide Array ◽  
Coupling Mechanism ◽  
Feed Network ◽  
Slotted Waveguide

AbstractIn this paper, two new feed network designs for single layer and double layer slotted waveguide array antennas are presented. A microstrip to substrate integrated waveguide transition is applied to the single layer antenna. The aperture coupling mechanism is used in order to find the optimum feed network for double-layer structure and to obtain stable radiation characteristics over the frequency band. The prototypes of the proposed antennas have been fabricated and tested. The measured results were compared very well with the simulation results obtained from CST microwave studio and showed low side lobe level at the center frequency of 11.5 GHz for the low-profile 4-channel slotted waveguide arrays.

Center Feed Single Layer Slotted Waveguide Array

2006 ◽  
Vol 54 (5) ◽  
pp. 1474-1480 ◽  
Author(s):  
S. Park ◽  
Y. Tsunemitsu ◽  
J. Hirokawa ◽  
M. Ando
Keyword(s):  
Single Layer ◽  
Waveguide Array ◽  
Slotted Waveguide

High-gain and high-efficiency single-layer slotted waveguide array for use in 22 GHz band

1996 ◽  
Vol 32 (4) ◽  
pp. 283 ◽  
Author(s):  
K. Sakakibara ◽  
J. Hirokawa ◽  
M. Ando ◽  
N. Goto
Keyword(s):  
High Efficiency ◽  
Single Layer ◽  
High Gain ◽  
Waveguide Array ◽  
Slotted Waveguide

scholarly journals Design of a Planar Array of Low Profile Horns at 28 GHz

Sensors ◽  
2020 ◽  
Vol 20 (23) ◽  
pp. 6989
Author(s):  
Jou-Yi Wang ◽  
Malcolm Ng Mou Kehn ◽  
Eva Rajo-Iglesias
Keyword(s):  
Millimeter Wave ◽  
Dielectric Materials ◽  
Waveguide Array ◽  
Wave Regime ◽  
Metal Solution ◽  
Radar Systems ◽  
Low Profile ◽  
Planar Array ◽  
Slotted Waveguide ◽  
Very High

A planar array of low profile horns fed by a transverse slotted waveguide array in the low millimeter-wave regime (28 GHz) is presented. The array of transverse slots cannot be directly used as antenna as it has grating lobes due to the fact that slot elements must be spaced a guided wavelength. However, these slots can be transformed into low profile horns that with their radiation patterns attenuate the grating lobes. To this aim, low profile horns with less than 0.6λ0 height were designed. The horns include a couple of chips that contribute to further reduce the grating lobes especially in the H-plane. The good performance of the designed array was demonstrated by both simulations and experiments performed on a manufactured prototype. A 5 × 5 array was designed that has a measured realized gain of 26.6 dBi with a bandwidth below 2%, still useful for some applications such as some radar systems. The total electrical size of the array is 6.63λ0× 6.63λ0. The radiation efficiency is very high and the aperture efficiency is above 80%. This all-metal solution is advantageous for millimeter-wave applications where losses sustained by dielectric materials become severe and it can be easily scaled to higher frequencies.

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