Fibre to the Bts –

Over the last few years, the use of fiber optic cable in place of more conventional coaxial cable has become viable in many applications due to advances in analog fiber technology. This paper presents Fiber-to-BTS i.e. Fiber in Base station Applications, a new system for feeding radio frequency (RF) signals from either the base station controller (BSC) or base transceiver station (BTS) directly to the antenna element at the air interface. RF system designers are familiar with the two major limiting characteristics of coaxial cables: the increase in RF loss with frequency and length. This type of system has lower transmission losses and greater power efficiency than current state-of-the-art implementations. Other advantages include fast antenna main beam steering, reduced antenna weight, and reduced susceptibility to RF interference on the feeder network and simplified site installation.