TELECOMMUNICATIONS SYSTEM

  97cm Ka band JONSA TECHNOLOGIES CO., LTD. provides VSAT (Very Small Aperture Terminal) at Ku band and Ka band frequency, to meet customer's demands in satisfactory. Specifications Item No. VSAT E97 Reflector Dish Type Elliptical Offset Angle 18.44° Physical Size Short Axis 97cm Physical Size Long Axis 99.8.cm Aperture Diameter 95.8.cm F/D Ratio 0.75 Focus Length 710mm Antenna Specification Operation Frequency TX RX Efficiency 29~ 31 GHz 19.2 - 21.2 GHz Ka-Band Gain 70% Min. 70% Min. 3d8 Beamwidth 46.9dBi @29GHz 43.9 dBi@ 19.2 GHz TX/RX Sidelobe Level 0.7° Max. 1.1°  Max. 29-25 logθdB θmin θ≦04 20 -3.5dB 20°<θ ≦ 26.3° 32-25 log θdB 26.3°θ ≦ 48° Cross Polarization on Axris -10dB 48° θ ≦ 180° within 1 dB Beamsidth 30 dB Min 25 dB Min Mounting Mounting Type Pole Mount Adjustment Type AZ / EL Adjustable Material Galvanized Steel Finish Polyester Coating Color Cool Grey / Dark Grey Elevation Range 10° ~90° Azimuth Range 0°~360° Pole Diameter Acceptable ¢60 mm Environment Operational

 https://www.nisshinbo-microdevices.co.jp/en/products/micro/vsat/njr2825.html

 https://www.miwv.com/standard-gain-horn-antennas/

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  Antenna Theory - Fundamentals A person, who needs to convey a thought, an idea or a doubt, can do so by  voice communication . The following illustration shows two individuals communicating with each other. Here, communication takes place through  sound waves . However, if two people want to communicate who are at longer distances, then we have to convert these sound waves into  electromagnetic waves . The device, which converts the required information signal into electromagnetic waves, is known as an  Antenna . What is an Antenna ? An Antenna is a transducer, which converts electrical power into electromagnetic waves and vice versa. An Antenna can be used either as a  transmitting antenna  or a  receiving antenna . A  transmitting antenna  is one, which converts electrical signals into electromagnetic waves and radiates them. A  receiving antenna  is one, which converts electromagnetic waves from the received beam into electrical signals. In two-way communication, the same antenna