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A new technique to realize a multiple-tap microwave photonic filter that is free of the limitations of tap-delay-variation induced filter distortion, which enables it to operate at high microwave frequencies, is presented. It is based on a technique using a wideband high-order dispersion compensator to cancel the group delay variations of the primary optical fiber dispersive delay line. The compensator,...
A new technique that can realize single passband microwave photonic filter is presented. It is based on the use of a multi-channel chirped fiber Bragg grating which sets the dispersion values on the individual spectrum slices without affecting the basic system time delay, and which controls the RF fading curve so that the notch frequencies fall on the harmonic passbands. Experimental results demonstrate...
Photonic signal processing offers the prospect of realising extremely high multi-GHz sampling frequencies, overcoming inherent electronic limitations. These processors provide new capabilities for realising high time-bandwidth operation and high-resolution performance. In-fibre signal processors are inherently compatible with fibre optic microwave systems, and can provide connectivity with in-built...
This paper presents design and modeling techniques of integrated passive devices (IPDs) that can be stacked with RF chips in a highly integrated and miniaturized 3D system-in-package (SiP) for wireless applications. The research starts to study winding and modeling techniques for high efficiency planar transformers. Based upon the proposed and modeled planar transformers, the research explores novel...
In this paper, the proposed LC resonator-based bandpass filter embedded in a two-layer substrate is presented to achieve both miniaturization and transmission-zero creation for 3.5 GHz WiMAX applications. There are two extra transmission zeros generated near the passband for a 2nd order design without introducing either a cross-coupling mechanism between adjacent resonators or a source-load coupling...
This paper presents very small bandpass filters embedded in an organic laminate substrate for wireless system-in-package applications. Due to the lack of a fabrication process for high capacitance density capacitors on the applicable substrate, the proposed bandpass filter designs are based on a modified T prototype. By carefully taking parasitic and coupling effects into account in the filter synthesis...
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