USE OF FREQUENCIES ABOVE 10 GHZ FOR COMMON CARRIER APPLICATIONS

We discuss problems and opportunities inherent in the use of frequencies above 10 GHz for common carrier applications. We also argue that if short hops are used to ameliorate the severe attenuation caused by excessive rain‐fall and if integrated solid‐state electronics are used to achieve cost and reliability goals, a viable system can result. Interference‐tolerant modulation methods and high performance antennas are used in order to permit many repeaters to operate co‐channel in a restricted geographical area. The paper also includes several references to other papers in this issue and elsewhere which describe studies and experiments conducted to demonstrate feasibility of the system concept and components and subassemblies designed especially for broadband short‐hop system application. © 1969 The Bell System Technical Journal