Optimal design of dual-section broadband transformer;

The study of broadband underwater acoustic transducer with doubly exciting plus a matching layer;

A Broadband Ohmic RF MEMS Switch;

Design of Ultra-wideband Microwave Matching PIN Switch Circuit;

Study on Wideband Spread Spectrum Array Signal Processing Technology;

New signal subspace direction-of-arrival estimator for wideband sources;

A COMS wide band frequency synthesizer for digital TV tuners;

Research of manufacture method and selective etching for the wide band semiconductor saturable absorption mirror;

The system realizes wide band receiving through incomplete integrative common RF forepart.

Realization of Integrated Monitoring Increment Operation Based on Broad Band;

High power, free-flooded, mosaic cylindrical Transducer of low frequency and broad band;

DOA Estimation of wide-band Chirp signal based on cross-spectra of continuous wavelet;

Solving Method Analysis of Wide-band Inserting of Dependents District;

Development of a wide-band digital power meter;

This article mainly describes the characteristic and reason which generate PMD and the testing method of PMD,the article also depicts the impact and restrictions caused by PMD on bandwidth optical network,and the quality of optical fiber influence PMD of bandwidth optical network.

Thanks to its new structure,it has smaller volume,lower insertion loss,higher directionality and broader bandwidth,and is easier to manufacture and test.

This paper introduces a basic conception of logarithm amplifier and a useful logarithmic amplifier using the chip of AD8313 that has a wide bandwidth, high dynamic range and high accuracy.