Millimeter-wave slotted waveguide planar array using partially-parallel feeding with travelling-wave excitation

2010 ◽  
Author(s):  
Kunio Sakakibara ◽  
Yuki Ikeno ◽  
Nobuyoshi Kikuma ◽  
Hiroshi Hirayama
Keyword(s):  
Millimeter Wave ◽  
Travelling Wave ◽  
Wave Excitation ◽  
Planar 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.

Waveguide and antenna coupled travelling-wave 1.55-μm photodetectors for optical (sub)millimeter-wave generation

2004 ◽  
Author(s):  
Andrei Malcoci ◽  
Andreas Stohr ◽  
Andres Sauerwald ◽  
Sven Schulz ◽  
Dieter Jager
Keyword(s):  
Millimeter Wave ◽  
Travelling Wave ◽  
Wave Generation

A New Improvement of Radial Line Slot Antenna

2013 ◽  
Vol 385-386 ◽  
pp. 1244-1248
Author(s):  
Jin Hang Hu ◽  
Jin Cai Lin ◽  
Wei Long Fu
Keyword(s):  
Slot Antenna ◽  
New Wave ◽  
Radial Line ◽  
Planar Array ◽  
Pros And Cons ◽  
Slotted Waveguide

A radial line slot antenna (CP-RLSA) is a slotted waveguide planar array for DBS reception. A number of designs have been devised, but these designs have pros and cons. In order to suppress grating lobes and increase the gain, this article will introduce a new wave material =1.06, arrange the angle and modify configurations of the slot sets. The results of experiment illustrate the validity of the design and analysis.

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