Phased array far field in the time domain

Haupt, Randy L.; Nayeri, Payam

doi:10.1109/iceaa.2016.7731444

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Pulse Dispersion In the Near Field1

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2017

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“…Instead, the separation distance depends on the pulse width as well as the antenna size. In order to quantify the effects of pulse dispersion on the separation distance between a transmit antenna and a receive array, assume that the receive antenna is stationary and the transmit antenna moves in a circle centered on the receive antenna as shown in Figure 7 [14]. For 0 ≤ ≤ 90 ∘ the time delay between when the pulse hits the first element and when it hits the last element is given by…”

Section: Pulse Dispersion In the Near Fieldmentioning

confidence: 99%

Pulse Dispersion in Phased Arrays

Haupt

Nayeri

2017

International Journal of Antennas and Propagation

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Phased array antennas cause pulse dispersion when receiving or transmitting wideband signals, because phase shifting the signals does not align the pulse envelopes from the elements. This paper presents two forms of pulse dispersion that occur in a phased array antenna. The first results from the separation distance between the transmit and receive antennas and impacts the definition of far field in the time domain. The second is a function of beam scanning and array size. Time delay units placed at the element and/or subarrays limit the pulse dispersion.

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Section: Pulse Dispersion In the Near Fieldmentioning

confidence: 99%