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Improvement of the Mirror Extending in Empirical Mode Decomposition Method and the Technology for Eliminating frequency mixing

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High Technology Letters 2002年第3期8卷 40-47页

作者：赵进平 First Inst. of Oceanogr. State Oceanic Admin. Qingdao 266061 China

The mirror extending approach proposed by Zhao and Huang in EMD method is improved in this paper. Mirror extending manner of data is kept unchanged, but the approach for determining envelopes is changed. When the end of data is obviously not extremum, the envelope is determined by the first inner extremum and the image value in the mirror, ignoring the value on the end. This improvement eliminates the frequency compression near the end and decreases the error. Meanwhile, tridiagonal equations are used and the calculation speed is much increased. The temporal process curve is more important in reflecting the real physical process and comparable with other phenomena. frequency mixing in IMFs makes it impossible. A high frequency reconstruction (HFR) approach is proposed to eliminate common frequency mixing and reconstruct an IMF with all high frequency portions. By this approach, the IMFs without frequency mixing are obtained to express significative processes. The high frequency information restored in high frequency IMF can be extracted by general spectrum method. After obtaining IMFs by EMD method, some of the theoretical and technological issues still exist when using the IMFs. The consistency of IMFs with real physical process is discussed in detail. By virtue of the approach proposed in this paper, the EMD method can be widely used in various fields.

关键词： empirical mode decomposition mirror extending intrinsic mode function high frequency reconstruction frequency mixing

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frequency measurement technique based on frequency conversion

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Journal of Measurement Science and Instrumentation 2013年第2期4卷 146-149页

作者：宁泽洪徐达旺董占勇 Science and Technology on Electronic Test & Mea surement Laboratory The 41st Institute of China Electronics Technology Group Corporation

To measure the signals with high freq u ency(>500 MHz),a sampling frequency down conversion method is *** pa per analyzes the intermodulation signals and figures out the relationship betwee n the intermodulation signal and intermediate frequenc y *** on the frequency conversion technology,an exclusion algorithm i s proposed a nd the actual implementation of the algorithm is *** application resu lts show that the exclusion algorithm can identify the intermodulation signal exactly and eliminate the bad influence on the frequency measurement.

关键词： frequency mixing intermodulation signal intermediate frequency local oscillator harmonic order

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3D heterogeneous integration of wideband RF chips using silicon-based adapter board technology

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Journal of Southeast University(English Edition) 2021年第1期37卷 8-13页

作者： Wang Yong Wei Wei Yang Dong Sun Biao Zhang Xingwen Zhang Youming Huang Fengyi School of Information Science and Engineering Southeast UniversityNanjing 210096China Yangzhou Marine Electronic Instrument Institute Yangzhou 225001China Hebei Semiconductor Research Institute Shijiazhuang 050002China School of Cyber Science and Engineering Southeast UniversityNanjing 210096China Purple Mountain Laboratories Nanjing 211111China

An ultra-wideband mixing component cascaded by a mixing multi-function chip and a frequency multiplier multi-function chip was demonstrated and implemented using 3D heterogeneous integration based on the silicon adapter board *** layers of high-resistance silicon substrate stack packaging are implemented based on the wafer-level gold-gold bonding *** layer adopts though silicon via(TSV)technology to realize signal interconnection.A core monolithic integrated microwave chip(MMIC)is embedded in the silicon cavity,and the silicon-based filter is integrated with the high-resistance silicon *** interconnect line,cavity and filter of the silicon-based adapter board are designed with AutoCAD,and HFSS is adopted for 3D electromagnetic field *** to the measured results,the radio frequency(RF)of the mixing multi-function chip is 40-44 GHz and its intermediate frequency(IF)can cover the Ku band with a chip size of 10 mm×11 mm×1 *** multiplier multi-function chip operates at 16-20 *** fundamental suppression is greater than 50 dB and the second harmonic suppression is better than 40 dB with a chip size of 8 mm×8 mm×1 *** cascaded fully assembled mixing component achieves a spur of better than-50 dBc and a gain of better than 15 dB.

关键词： silicon-based adapter board frequency mixing frequency multiplier multi-function chip

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