Changes between Version 2 and Version 3 of HardwareUsersGuides/RadioBoard_v1.4/RF


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Timestamp:
Feb 12, 2009, 8:55:03 PM (15 years ago)
Author:
murphpo
Comment:

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  • HardwareUsersGuides/RadioBoard_v1.4/RF

    v2 v3  
    22
    33== WARP Radio RF ==
    4 
    54[[Image(HardwareUsersGuides/RadioBoard_v1.4/Images:Radio_Board_RF.jpg)]]
    65
     6The RF section of the Radio Board consists of a dual-band direct-conversion RF transceiver and an RF front-end connecting the transceiver to the antenna.
     7
    78=== RF Transceiver ===
    8 [http://www.maxim-ic.com/quick_view2.cfm/qv_pk/4532 MAX2829]
    9 
    10  * dual-band (2400-2500MHz, 4900-5875MHz)
    11  * 20 or 40MHz bandwidth
    12  * analog I/Q Tx and Rx interfaces
     9The board uses Maxim's [http://www.maxim-ic.com/quick_view2.cfm/qv_pk/4532 MAX2829] dual-band transceiver. Some key features of the transceiver are:
     10 * Dual-band (2400-2500MHz, 4900-5875MHz)
     11 * Up to 40MHz bandwidth
     12 * Analog I/Q Tx and Rx interfaces
    1313 * 60dB RSSI range
    1414 * 30dB Tx power control range
    … …  
    1616 * MIMO capable
    1717
     18The I/Q interfaces of the MAX2829 are connected directly to the Radio Board's ADC and DAC. The transceiver's control interfaces are connected to the daughtercard headers, enabling direct control from the FPGA.
     19
    1820=== RF Power Amplifier ===
    19 Sharp IRM046U7, 18dBm (3% EVM for 64-QAM OFDM) at 2.4 and 5GHz
     21The RF transmit path includes a Sharp IRM046U7 dual-band RF power amplifier. The board is designed to provide approximately 18dBm output power when driven at full gain. The PA is controlled by the host FPGA via daughtercard connections. (We would love to link to the datasheet for this part, but Sharp has made it impossible to find.)
    2022
    2123=== Antenna Ports ===
    22 Two 50Ω female SMA connectors. DPDT switch allows antenna assignment as either Tx vs. Rx or 2.4 vs. 5GHz. switch control is digital via dedicated FPGA pins.
     24The are two 50Ω female SMA antenna connectors; only one is connected to the transceiver at a given time. See [../Usage/AntennaConnectors AntennaConnectors] for more details.