White Papers
Solid State Ka-band Transmitters Power Broadband Satellite Communications.
The purpose of this article is to describe the approach EM Solutions has taken to become one of the world’s top tier suppliers of solid state Ka-band transceivers to the satcom industry. This article focuses on the components that are used in the RF front ends of satellite ground terminals, rather than TWT-based systems required in the more powerful ground earth stations or on the spacecraft itself.
 White paper - Ka-band powers RF into broadband | White paper - Ka-band powers RF into broadband | 879 Kb |
Military Satcom network engineers need to consider non linear effects of transmissions where signal levels are low or multiple carriers occupy a narrow bandwidth. Non linear characteristics of some Ka-band amplifiers behaviour differently to Ku-band and X-band amplifiers, and therefore there is a need to carefully measure the performance of Ka-band amplifiers when selecting for use on Wideband Global SATCOM (WGS).
| Download Whitepaper (A4) | 1531 Kb | |
| Download Whitepaper (US Letter) | 1558 Kb |
The Ka-band (20/30GHz) satellite offers excellent potential for transportable and mobile communications due to the wide bandwidth available and the high gain achievable with small antennas. There are some difficult technical challenges in realizing this potential. While relatively small antennas, such as 500-1000mm parabolic reflectors, give high gain of the order of 40dB the beam widths are quite narrow, of the order of 1deg, and the antenna has to operate at both the 20GHz receive band and the 30GHz transmit band.
There are many X-band and Ku-band satellite tracking antennas for On-The-Move (OTM) applications, but only a few products have been developed for Ka-band. With the deployment of the Wideband Gapfiller Satellites (WGS) the demand for OTM Terminals at Ka-band will increase.
| Download Whitepaper | 1009 Kb |
EM Solutions was awarded a contract to develop a Mounted Battle Command Ka-band Satcom On-The-Move System under the Australian Defence Force (ADF) Capability and Technology Demonstrator (CTD) Program. The objective was to develop a SOTM terminal that was suitable for WGS operation, and would allow the ADF to investigate, demonstrate and examine its potential as a key system supporting the ADF's Network Centric Warfare strategy. This paper gives a brief overview of the antenna terminal, and then presents some results from field tests conducted with the antenna terminal mounted on a Bushmaster Protected Mobility Vehicle (PMV).
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