Hydra – RF Front End
Block Diagram of Analog RF Front End
RF Front End Implementation
In each node, the analog front end is implemented using frequency agile RF transceivers donated from Texas Instruments (RCS 110). The RF front end is capable of supporting conformal or standalone antenna arrays. The TI-RF transceiver cards are capable of transmitting at all channels in both the Industrial, Science, and Medicine (ISM) band between 2.4 and 2.5 GHz as well as in the Unlicensed National Information Infrastructure (UNII) band between 4.9 and 5.9 GHz. The cards are designed to operate independently of existing wireless standards, and thus provide us with maximum flexibility. Reference signals for RF transceiver local oscillator generation will be provided by GPS. GPS hardware from oscilloquartz will provide a 10 MHz signal that will allow multiple transceiver board (array element to array element) synchronization and multi-node synchronization. The hardware from oscilloquartz is a GPS-disciplined cesium oscillator. When a GPS signal is not present, such as would occur in indoor networks, internal cesium oscillators provide the reference signal.
RF Front End Hardware
Texas Instruments RF Transceiver Cards