CELWAVE
Celwave introduced a new antenna and amplifier. The Celwave Optimizer, a log periodic dipole antenna, has continuous adjustment of electrical downtilt with the turn of a dial. With an electrical downtilt of zero to 14 degrees, one Optimizer operates over a frequency range of 806 MHz to 941 MHz, and has 11.5 dBd gain. The other Optimizer, with an electrical downtilt of two degrees to eight degrees, operates over a frequency range of 1850 MHz to 1990 MHz and has 13 dBd gain. Both antennas have a 90-degree horizontal beamwidth. The new 48660 BDA, or Intelli BDA, is a single-channel Code Division Multiple Access bi-directional amplifier for personal communications services networks. The amplifier is designed to improve coverage at office complexes, campuses, point-of-sale retail stores, hospitals, shopping malls and other similar environments. The unit features a minimum gain of 65 dB, and is available for frequencies of 1850 MHz to 1910 MHz, as well as 1930 MHz to 1990 MHz. Entire PCS band can be tuned remotely in a single unit via an internal modem, dip switches or via the RS-232 local port. The Intelli BDA’s RF section provides gain, down conversion, filtering and up conversion to each leg of the CDMA channel. The unit’s microprocessor also includes RS-232 Universal Asynchronous Receiver/Transmitter, and real-time clock with battery backup. Celwave is a division of Radio Frequency Systems Inc. (800) 235-9283.
WIRELESS VALLEY
A fully integrated prediction, measurement, planning and management system for all indoor and microcell wireless system-design applications was introduced by Wireless Valley Communications Inc., a spinoff company from Virginia Tech’s wireless research program. SitePlanner handles every wireless standard and all modulation formats, including digital cellular, personal communications services, wireless private branch exchange and wireless local area network systems. The software/hardware platform integrates real-time measurements, radio-frequency propagation models, forward and reverse channel link budgets and bill-of-material information for complete system management. Received signal strength, frame error rate and carrier-to-interface levels are predicted, measured and optimized throughout every region of a campus of multifloor environment, and then stored for future engineering work. The tool suite offers the user the ability to relocate antennas and distributed/leaky feedline systems, analyze the impact of directional antennas made by a host of vendors, and determine noise figures and link budget calculations. SitePlanner operates on any Windows 95-, Windows 98- or Windows NT-equipped personal computer. A complete SitePlanner tool suite costs about $19,000. (540) 552-8300.
