Pulse Dispersion and Shaping in Microstrip Lines

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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“…Pulse dispersion [8][9][10] results when the received pulse has a longer duration than the transmitted pulse. It occurs due to the following:…”

Section: Pulse Dispersionmentioning

confidence: 99%

Pulse Dispersion in Phased Arrays

Haupt

Nayeri

2017

International Journal of Antennas and Propagation

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“…Distortion in the rectangular pulse is very important in this study. Therefore, these parameters are given below in order to avoid ambiguity in our time-domain discussion and also describe reasons for the distortion in a rectangular pulse [14][15][16][17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Design of microstrip ultrafast pulses interconnect for THz-analog and digital applications

2019

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In this article, the propagation characteristic of transient pulses over the designed microstrip THz interconnects by various conducting materials is analyzed. The Fourier inverse transformation approach is used to visualize the effect of propagation of transient pulses over THz interconnects made by the various conducting materials which are widely used in Complementary Metal Oxide Semiconductor (CMOS) technology named Copper, Gold, Aluminum, Tungsten, Tungsten-Silicide (W-Si 2) and Poly-Si respectively. All parameters of transient pulse like rising time, fall time, propagation delay, settling time, overshoot, undershoot and ringing, etc. have calculated using the proposed circuit model and it has been verified with Finite Elements Method based EM-Simulation results. The distortion due to geometrical dispersion is significant; while a loss could be an important factor depending on the dielectric loss of the substrate. This information could be useful in designing both on board and on-chip interconnects. The proposed circuit model of microstrip THz interconnects and algorithmic frameworks proved the usefulness of rapid design, which is extremely challenging when using conventional methods. To the awareness, this is the attempt to efficient solving of this type of design problems; especially in the context of explicit THz interconnect design for CMOS technology.

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