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Time-Delay Multiplexing With Linear Arrays of THz Radar Transceivers

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3 Author(s)
Blazquez, B. ; THz Sensing Group, Delft Univ. of Technol., Delft, Netherlands ; Cooper, K.B. ; Llombart, N.

The acquisition time of a terahertz imaging radar system with a single transceiver can be halved by using time-delay multiplexing of its beam. This is achieved by splitting a transmitted beam into two beams pointing towards different positions in the target plane. For near-video imaging frame rates, arrays of transceivers would be needed. Both techniques, time-delay multiplexing and the use of transceiver arrays, can be combined to achieve the fastest possible imaging speeds. In this contribution, the feasibility of using the multiplexing technique applied to linear arrays of transceivers is studied. A completely optical multiplexing system, that can work for relatively large arrays, is presented. The technique is demonstrated with measurements in a two-element array.

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Terahertz Science and Technology, IEEE Transactions on  (Volume:4 ,  Issue: 2 )