A NEW EXTENSION TO THE SHADOW FILTERS THEORY. Masters thesis, King Fahd University of Petroleum and Minerals.

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Arabic Abstract

في عام 2010 ظهرت نظرية مرشحات الظل. هذه النظرية تتكلم عن مرشحات تمرير النطاق وكيفية تغيير ترددها المركزي عن طريق التحكم بمقدار الكسب الكهربائي للمضخم الذي يصل بين الخارج والداخل بدائرة الجمع. هذا البحث هو إمتداد لنظرية مرشحات الظل, حيث تم تعميم النظرية على أنواع أخرى من المرشحات كمرشح تمرير الترددات المنخفظه ومرشح تمرير الترددات العالية ومرشح حجب النطاق. كما أنه في هذا البحث تم إقتراح تصميم لمرشحات الظل أقل كلفة من التصميم المقترح في 2010 حيث أنه لا حاجة لدائرة الجمع في التصميم المقترح.

English Abstract

The shadow filter theory was proposed in 2010. It was about changing the center frequency of a band pass filter by acting on an external amplifier. The shadow filtering provide great features where some of the filter parameters can be tuned externally without touching the passive or active components of the filter itself. The requirements of the shadow filter, proposed in 2010, are a 2nd order filter, feedback amplifier as well as a summing circuit at the input. This work is an extension to the theory where the shadow filtering is achieved only by 2nd order filter and a feedback amplifier without need to the an externally connected summing circuit. In addition to that, the shadow filter theory is extended to other types of filters. For example, the concept of the shadow filtering theory is utilized to tune the bandwidth and the center frequency independently for the band-pass filters and band stop filters. Moreover, the same concept is applied on the low pass and high pass filters to tune the center frequency with and without control over the quality factor.

Item Type: Thesis (Masters)
Subjects: Engineering
Department: College of Engineering and Physics > Electrical Engineering
Committee Advisor: Abuelma'atti, Muhammad Taher
Committee Members: Al-Absi, Munir and Hussein, Alaa El-Din
Depositing User: ALMUTAIRI RADHYAN (g200528150)
Date Deposited: 13 Sep 2015 06:41
Last Modified: 01 Nov 2019 15:46
URI: http://eprints.kfupm.edu.sa/id/eprint/139596