نتایج جستجو برای: microwave filter

تعداد نتایج: 172946  

2012
R. Heydari

A tunable photonic microwave bandpass filter with negative coefficient based on an electro-optic phase modulator (EOPM) and a variable polarization beamsplitter (VPBS) is demonstrated. A two-tap microwave bandpass filter with one negative coefficient is presented. The chromatic dispersion and optical coherence are not affected on this filter. Keywords—Bandpass filter, EOPM, photonic microwave f...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی خواجه نصیرالدین طوسی - دانشکده مهندسی برق 1382

در این پروژه به طراحی، شبیه سازی و ساخت داپلکسر موجبری مایکروویو در فرکانس 900mhz پرداخته شده است این داپکسر با ترکیب دو فیلترمیان گذر موجبری بدست می آید. لذا در این پایان نامه ابتدا چند روش طراحی فیلترها معرفی و با استفاده از هر روش یک فیلتر طرح و شبیه سازی می شود. سپس روشی برای ترکیب فیلترها و تحقق داپلکسر معرفی می شود. پس از آن روش ساخت داپلکسر بیان و در انتها نتایج حاصل از شبیه سازی و ساخت ...

2015
Anthony Bruster Ariffin Mutalib

In the last few years, several microwave filter design with band-pass response have been proposed for ultra-wideband (UWB) application. Among various microwave filter design, microstrip filter are mostly used by researcher due to their low profile, light weight, easy to fabricate and low cost. Conventional microstrip filter can be in any shape whether circular, rectangular or elliptical but som...

2010
R. K. JEYACHITRA R. SUKANESH

--An analysis of the performance of a simple, incoherent spectrum sliced microwave photonic filter is presented. This filter structure is based on cascading of two incoherent fiber Fabry -Pérot filters as a slicing element of a broadband optical source. The filter performance is studied by measuring the overall Free Spectral Range, 3dB Bandwidth, Quality factor and Main Lobe to Sidelobe Suppres...

2014
Neelam Thakur Ajay Kumar Yadav

As we know that the conventional filter synthesis procedure is adequate only for the relatively narrow band filters and is not suitable for the Wideband and Ultra wideband filters .Therefore we are intend to design a Ultra Wideband filter. In this study a compact Ultra Wide Band pass filter consisting of quarter wave resonant conductor like micro strip lines is proposed to design. We have to in...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1389

چکیده ندارد.

2006
Y. L. Qin A. Fang J. Hu W. W. Zhou

Because microwave products in the consumer electronics market are continuous developing, device and component manufacturers have to seek new advanced integration, packaging and interconnection technologies, as size, cost and performance are critical factors for the success of a microwave product. One of the most promising integration technologies is the multilayer low temperature co-fired ceram...

2013
Z. Zakaria M. S. Jawad N. Omar A. R. Othman V. R. Gannapathy

Abstract—This paper presents a low-loss coaxial cavity microwave bandpass filter with postmanufacturing tuning capabilities. A systematic filter development using a low-pass prototype as the starting point to produce a fourth-degree Chebyshev bandpass response is demonstrated. The coaxial cavity filter based on the transverse electromagnetic mode of the propagation has a center frequency of 2.5...

2016
Wei Wei Lilin Yi Yves Jaouën Weisheng Hu

Microwave photonic filters (MPFs) are of great interest in radio frequency systems since they provide prominent flexibility on microwave signal processing. Although filter reconfigurability and tunability have been demonstrated repeatedly, it is still difficult to control the filter shape with very high precision. Thus the MPF application is basically limited to signal selection. Here we presen...

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