Squint Reduction of L Band Phased Array Using Novel Miniature True Time Delay

Freer, Benjamin; Geiler, Michael

doi:10.1109/past43306.2019.9020773

Cited by 1 publication

(2 citation statements)

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“…In the alternative case without the FSL, we lose all channels if the front-end saturates. Finally, linearization techniques are being developed [14] for the FSL and may be mature enough. This approach involves the use of a behavioral model to thoroughly characterize the FSL and the IMs it produces to cancel them using pre/post distortion algorithms and techniques.…”

Section: Characteristics Of Intermodulation Distortion In Frequency Selective Limiters and System Implicationsmentioning

confidence: 99%

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Microwave Magnetics and Considerations for Systems Design

et al. 2021

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The adoption of non-linear magnetic devices in Radio Frequency (RF) systems has been relatively slow due to their unique characteristics that do not lend themselves well to traditional design tools and methodologies. Herein we present the practical considerations in employing such devices in modern RF system design with an emphasis on realizable improvements in performance and adaptability in addition to the common design methodology that has been adopted to account for their unique behavior. Specifically, this article begins by presenting how a standalone nonlinear device such as a Frequency Selective Limiter (FSL) can enable a higher-level subsystem such as the Frequency Selective Canceller (FSC). This discussion sheds light on the importance of characterizing the behavior of an FSL and how this behavior is different from other, more traditional RF components such as a Pin Diode Limiter, as explained in the second part of the article. Lastly, a Magnetostatic Wave (MSW) delay line that leverages the recent advancements in non-linear magnetic device design is introduced in order to provide an attractive alternative to traditional delay lines. A more complete understanding of system-level performance benefits and device-level functionality will undoubtedly facilitate the widescale deployment of nonlinear magnetic devices to help mitigate spectrum congestion challenges faced by modern and future RF systems.INDEX TERMS Frequency selective limiter, analog signal processing, magnetostatic surface waves, receiver front-end, linearization techniques, delay lines.

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Section: Characteristics Of Intermodulation Distortion In Frequency Selective Limiters and System Implicationsmentioning

confidence: 99%

“…Delay lines are essential building blocks in a variety of radars, EW systems, communication systems and measurement applications [14]. In broadband Phased Array Radars, they are used to replace digital phase shifters to reduce beam squint error [5].…”

Section: High Linearity Magnetostatic Wave Delay Linementioning

confidence: 99%