cPCI RF TRANSCEIVER UMTS Band 1920-1980 MHz / 2110-2170 MHz The FlexcellTM cPCI RF modules provide multi-carrier, wideband radio front-ends for the various frequency bands that are used for every kind of communications. The RF UMTS 1920-1980 MHz / 2110-2170 MHz is one such module. This industry-standard 6U cPCI card operates over a fixed 20 MHz tuning bandwidth positioned anywhere in the UMTS RF spectrum. IF sampling techniques are used to eliminate one step in the RF analog process. Current radio architectures commonly digitize each RF carrier after mixing it down to baseband or low IF. In Radical Horizon’s FlexcellTM concept, wideband receivers simultaneously receive all channels in the frequency band and digitize them at IF frequencies with an analog to digital converter. Two receivers in a small form factor support diversity processing, software compensation for channel and RF chain distortion and smart antenna applications with multiple antennas. A single transmitter converts signals from the digital IF network to a multi-carrier RF output. As an option, one or both RF receivers can be configured to use the same frequencies as the transmitter. The FPGA transmits and receives digital broadband signals to and from the DSP. An integrated communications processor provides wireline connectivity such as Ethernet, T1/E1 and RS-232. Functions Wideband radio front-end with 2 receivers and 1 transmitter Simultaneous digitization of multiple channels at IF frequencies, with an ADC per receiver Connectivity to the cPCI bus and to the FlexcellTM digital IF bus Features Two multi-channel receivers simultaneously receive and digitize all channels within a 20 MHz band that can be positioned anywhere in the 1920 to 1980 MHz or 2110 to 2170 MHz frequency range One multi-channel transmitter simultaneously transmits on all channels in a 20 MHz band that can be positioned anywhere in the 1920 to 1980 MHz or 2110 to 2170 MHz frequency range Embedded, software-controlled AGC Monitoring system with 15 test points for temperature, current, voltage, power consumption and frequency stability Hot-swappable, with built-in test functions to reduce mean-time-to-repair and increase availability Can be custom-adjusted to other boards (1200-2400 MHz) Technical Specifications General RF Characteristics 1 Transmitter, 2 Receivers (fully configurable) Frequency range: 1920-1980 MHz and 2110-2170 MHz (customizable to other boards) Bandwidth: 20 MHz (tunable over all frequency ranges) Tx/Rx isolation: 80 dB Analog Receivers Noise figure: 4 dB Maximum input level: -10 dBm Phase noise: -120 dBc/Hz at 100 kHz Analog Transmitter Transmit output level: -10 dBm(programmable) Frequency Stability: 0.01 ppm over external reference Analog-Digital Converter (ADC) Analog Device AD6645 Sample rate up to 105 MSPS Resolution 14 bits Digital-Analog Converter (DAC) Analog Device DA9755 D/A conversion 14 bits Sample rate up to 300 MHz Field-Programmable Gate Array (FPGA) 1 Xilinx Virtex II FPGA Digital IF network interface Integrated Communications Processor Motorola MPC8260 PowerQUICC II Tundra PowerSpan II dual bridge 128 MB SDRAM 64 MB downloadable Flash Linux operating system Input/Output RF Analog: 3 SMA connectors (2 Rx and 1 Tx) External input clock: 1 SMA connector Data access: Digital IF network PCI bus; supports 64 bit / 66 MHz PCI 2.2 PICMG 2.16 r1.0 packet switching Digital processing: 1 PMC site Wireline connectivity: Ethernet, TDM (T1/E1) JTAG test ports Form Factor cPCI 6U, 1 slot Maintainability Hot-swappable PICMG 2.1 r2.0 Built-in test