* As frequency increases, hybrid architectures will become more practical and 4:1 beamformers will be able to reduce the receiver/exciter
, allowing additional space to be allocated for the RF electronics.
"This digital receiver/exciter
technology makes a fourth-generation aircraft survivable in a fifth-generation world.
The VAA using the AN/PRC-152 as the receiver/exciter
provides two 50 watt (adjustable) channels in the 30-90MHz frequency range thus making it the equivalent to the high power (50 watt) SINCGARS configuration.
The Modular Receiver/Exciter
(MORE), which effectively replaces the older Modular Low-Power Radio Frequency subsystem, is able to handle the wideband waveforms needed by the Sar mode.
This upgrade will convert systems into units similar to that of the most recent AN/MPQ-64 Sentinel product improvement, Enhancements included in the kit are a new transmitter power amplifier, receiver/exciter
, signal/data processor, and antenna-motor controller.
Raytheon Co.'s Electronic Systems, El Segundo operation, whose share of the contract is $106 M, will design Active Electronically Scanned Array (AESA) sub-arrays for assembly into antennas of various sizes and will develop back-end components for a multi-channel receiver/exciter
Figure 1 shows a notional block diagram of a radar receiver/exciter
. Notice that the LRU contains frequency references, local oscillator generation, up/down frequency conversion, and digital-to-analog (D/A) and analog-to-digital (A/D) as well as signal processing functions.
The radar system featured an advanced AESA antenna, a high-performance radar receiver/exciter
, and a commercial off-the-shelf processor.
Digital signal generation and pulse compression are utilised and the radar's receiver/exciter
is mounted onto the antenna array to optimise channel matching.
As currently outlined, the equipment is frequency agile and comprises a mechanically scanning planar array antenna, a receiver/exciter
, a transmitter and a radar processor with a heavy emphasis on adaptability in installation configuration.
For the communications electronic support (ES) mission, Raytheon E-Systems Melpar developed a 30-lb ES payload to perform precision direction finding (DF) and geolocation in the HF, VHF and UHF bands, while the Naval Air Warfare Center-Indianapolis (NAWC-IA) built a 47.5-lb communications jammer (consisting of a receiver/exciter
, power amplifier and antennas) with a "smart" processing subsystem to autonomously recognize and jam enemy VHF and UHF transmissions.
Currently, he is an RF design engineer in the Receiver/Exciter
Department of Raytheon's Equipment Division.