Ka-band flexible multibeam antenna with improved gain and full power capability

2014 ◽  
Author(s):  
Sohyeun Yun ◽  
Manseok Uhm ◽  
Inbok Yom
Keyword(s):  
Multibeam Antenna ◽  
Ka Band ◽  
Full Power ◽  
Power Capability

scholarly journals Beam Scanning Capabilities of a 3D-Printed Perforated Dielectric Transmitarray

Electronics ◽  
2019 ◽  
Vol 8 (4) ◽  
pp. 379 ◽  
Author(s):  
Andrea Massaccesi ◽  
Gianluca Dassano ◽  
Paola Pirinoli
Keyword(s):  
3D Printing ◽  
Unit Cell ◽  
Multibeam Antenna ◽  
Beam Scanning ◽  
Additional Advantage ◽  
Ka Band ◽  
Measured Radiation ◽  
3D Printed ◽  
Printing Techniques

In this paper, the design of a beam scanning, 3D-printed dielectric Transmitarray (TA) working in Ka-band is discussed. Thanks to the use of an innovative three-layer dielectric unit-cell that exploits tapered sections to enhance the bandwidth, a 50 × 50 elements transmitarray with improved scanning capabilities and wideband behavior has been designed and experimentally validated. The measured radiation performances over a scanning coverage of ±27 ∘ shown a variation of the gain lower than 2.9 dB and a 1-dB bandwidth in any case higher than 23%. The promising results suggest that the proposed TA technology is a valid alternative to realize a passive multibeam antenna, with the additional advantage that it can be easily manufactured using 3D-printing techniques.

Ka Band Multibeam Antenna Pointing System for WINDS

2007 ◽  
Author(s):  
Satoru Ozawa ◽  
Masaaki Shimada ◽  
Yoichi Koishi ◽  
Katsunori Hirayama ◽  
Ken Maeda
Keyword(s):  
Multibeam Antenna ◽  
Ka Band

scholarly journals A Multibeam Lens Antenna for In-Flight Applications Using High Throughput Satellite Systems at V-band

2021 ◽  
Author(s):  
Behzad Koosha ◽  
Omid Manoochehri ◽  
Hermann J. Helgert
Keyword(s):  
High Throughput ◽  
Communication Systems ◽  
Next Generation ◽  
Multibeam Antenna ◽  
Wide Bandwidth ◽  
Ka Band ◽  
Satellite Systems ◽  
Earth Station ◽  
V Band ◽  
High Bandwidth

The Q/V band communication systems open new avenues for next generation of High Throughput Satellite (HTS) systems. More specifically, they are attractive due to their high bandwidth for user and gateway links. Having a wide bandwidth at Q/V band makes it permissible to offload the links between the satellite and its earth station hubs (gateway) from the Ka band to the Q/V band. This enables additional bandwidth available for HTS feeder links and user links of specific market verticals, which in turn results in reduction of cost per bit. In this paper, we are going to discuss different aspects of an In-Flight Connectivity (IFC) scheme for HTS. Developing a wideband and multibeam antenna is an essential part of this proposed system, which is also going to be discussed in this paper.

scholarly journals Ka-band satellite-borne multibeam antenna to provide zone-based satellite communication with high-speed access in the territory of RF

2012 ◽  
Author(s):  
В.А. Вечтомов ◽  
◽  
В.Н. Зимин ◽  
А.Н. Кузенков ◽  
Д.В. Дронов ◽  
...  
Keyword(s):  
High Speed ◽  
Satellite Communication ◽  
Multibeam Antenna ◽  
Ka Band

scholarly journals Assembly and Test of a Direct Reversing Marine Gas Turbine

1976 ◽  
Author(s):  
J. C. Rucigay
Keyword(s):  
Gas Turbine ◽  
Full Scale ◽  
Test Results ◽  
Transient Data ◽  
Full Power ◽  
Marine Applications ◽  
Power Capability ◽  
Turbine Design ◽  
And Control ◽  
Infinite Range

A marine gas turbine, capable of obtaining rapid propeller thrust reversals for such maneuvers as docking or crash reversal operation, without the aid of controllable pitch propellers or motor-generator units, was successfully test demonstrated using full-scale hardware. This paper describes the design pictorially during the assembly stages in addition to full load performance and control transient data. The data demonstrates that the turbine can be controlled in either direction within an infinite range of speeds from full ahead to full astern. Test results are compared with previous analytical predictions verifying the full power capability of this turbine design for marine applications or other industrial uses.

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