System Considerations In Applications Of 18ghz Microwave To CATV (1986)
By T. M. Straus and R. T. Hsu, Hughes Aircraft Company
When compared to the conventional 12 GHz CARS band microwave, 18 GHz systems suffer from substantially higher rain attenuation and somewhat reduced equipment capability. However, in those instances when an interference free CARS band frequency allocation cannot be obtained, 18 GHz microwave systems can in many cases offer a viable alternative. High power transmitters utilizing specially developed klystron amplifiers have been utilized at a 17 mile range with acceptable link margin. Both 6 MHz wide VSB-AM and 20 MHz wide FM video channels can be accommodated with this type of equipment. Comparisons between 12 GHz and 18 GHz equipments and system performance are presented.
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