Phased array radars are electronically steered antennas with multiple radiating elements to steer antenna beams rather than physically moving an antenna. Beam-steering for transmission or reception is performed by adjusting the phase of the individual antenna elements in the array. Carefully controlling the phase of each signal means the radar beam can be sent in any direction. The antenna array elements are each fed by high-frequency transmission lines; the accuracy of the signal phase presented to each array element depends on the phase accuracy and stability of the cable assemblies. As technology continues to evolve, phased array radars are expected to grow in popularity.
Advantages of phased array radar over traditional radars include:
Phased array radars are a common element of many other radar systems. These applications can include:
Coaxial cables are the connection between the transmitter, receiver, and individual radiating elements of phased array antennas. Precise control of phase for RF signals gives the phased array radar its desirable capabilities, so the coaxial cables used in these applications need to be highly reliable. Two types of coaxial cables are typically used in phase array radar systems:
PhaseTrack® cable assemblies are designed for applications demanding minimal phase change over temperature. All PhaseTrack cables use a proprietary TF4® dielectric that does not have the abrupt shift in the phase that occurs with solid- or tape-wrapped PTFE-based products under normal room ambient temperature conditions.
The SiO2 semi-rigid cable assemblies are used in applications demanding the ultimate in phase tracking performance and extreme environments.
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