Site Solutions
GPS over Fiber System
Product code : JCVAUD
Rosenberger presents a new and innovative GPS over Fiber system for applications where coax cannot be used to route the GPS signal to base stations. With more centralized RAN and large-scale DAS applications, there are many cases where the GPS antennas are located too far from the base stations for coaxial losses to be acceptable. To overcome this issue, the GPS over Fiber system converts the RF signal to light, transmits it over the fiber, and then restores the light to the original RF signal. Working in contrast to the many systems that employ a bulky remote unit – which requires power and separate mounting space – as well as a large master unit encompassing an active GPS splitter, Rosenberger has rethought the process and designed a fiber-optic replacement for the coaxial cable. Instead of a master unit and a remote unit, the system uses an electrooptical converter (E/O converter) at the antenna and an opto-electrical converter (O/E converter) near the base station. By employing this method, the E/O converter becomes a small, compact unit that connects directly to the GPS antenna. The unit is so small that it can even fit within a 1 ½ inch pipe of the kind often used to mount GPS antennas. The O/E converter handles all alarms and is a compact unit. It can be used to power the E/O converter and can be connected to standard GPS splitters with full support for their redundancy functionality. This means that the GPS over Fiber system fully emulates the behavior of a passive copper cable and GPS antenna, allowing any device that is normally connected to the GPS antenna to maintain proper operation when connected to an O/E converter. Interconnecting the two units i.e. E/O converter to the O/E converter is a thin hybrid cable comprised of fiber and power, which means no power source is required at the GPS antenna. The individual link support for each GPS antenna allows for the flexibility of using a normal coaxial configuration and simply replacing each coax cable from a GPS antenna with an E/O converter, an O/E converter, and a hybrid cable. With a maximum hybrid cable length of 1.9 miles (3 km), this system can meet the demands of almost any installation
Specification Sheet
The cable construction is similar for all cable sizes: Inner conductor, foam dielectric, outer conductor and outer jacket. The cables are available as standard with either a PE jacket for outdoor installations or in a flame retardant and halogen-free version to comply with indoor requirements for health and safety, IEC 60332 and CPR-EN 50575.
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Rosenberger coaxial jumpers have been designed using the many years of experience gained by Rosenberger engineers in this field. The unique knowledge of designing and manufacturing world-leading PIM testing equipment is directly reflected in the jumpers. Rosenberger jumpers have the industry-best PIM levels: -117 dBm / -160 dBc @ 2 x 20 W (typ. -120 dBm / -163 dBc @ 2 x 20 W). These excellent levels are guaranteed for every assembly that leaves the Rosenberger production facility.
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Rosenberger connectors are designed for ease of attachment while providing consistent industry leading performance. The connectors have excellent mechanical and environmental properties that ensure long-term durability and performance both in indoor and outdoor environments. All Rosenberger connectors are coated with a specially selected flash white bronze over silver plating. This coating is specifically selected to provide protection against oxidation while delivering exceptional performance and electrical conductivity.
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Continuous expansion and consolidation of LTE and 5G networks require future-proof and versatile connectivity solutions between the BBU/PSU and the RRHs. Rosenberger’s focus is to offer Plug & Play FTTA/PTTA solutions that provide a Neutral Point of Interface to ensure efficient and cost-effective installations, upgrades, swaps and addition of new technologies.