scholarly journals Equivalent Circuit Based Performance Coupling Analysis Method for Lead Wire Interconnection with Defects

Electronics ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 642
Author(s):  
Zhihai Wang ◽  
Lu Wang ◽  
Kunpeng Yu ◽  
Shaoyi Liu ◽  
Congsi Wang
Keyword(s):  
Solder Joint ◽  
Equivalent Circuit ◽  
Insertion Loss ◽  
Return Loss ◽  
Equivalent Circuit Model ◽  
Electrical Performance ◽  
Lead Wire ◽  
Environmental Load ◽  
Analysis Method ◽  
Equivalent Circuit Method

There are a large number of interconnections in the microwave module, among which the lead wire interconnection is widely used. Under the environmental load, the solder joint of the lead wire interconnection often appears to have cracks and other defects, which directly affect the return loss and insertion loss when transmitting electrical signals through solder joints, and indirectly affect the performance of the microwave module. For this reason, the segmented modeling method is realized by segmenting the lead wire interconnection structure into two parts in this paper, and the equivalent circuit model of the lead wire interconnection with the cracked solder joint is established using the equivalent circuit method. The correlation mechanism of the shape of the solder joint of the lead wire interconnection is studied, and formulas for predicting electrical performance based on return loss and insertion loss are derived. This paper realizes the prediction of the electrical performance of the lead wire interconnection with the defect, and can provide a reference for engineers and technicians.

Compact four-way suspended-stripline power divider with low loss and high isolation

2020 ◽  
Vol 12 (8) ◽  
pp. 749-753
Author(s):  
Song Guo ◽  
Kaijun Song ◽  
Yong Fan
Keyword(s):  
Insertion Loss ◽  
Reasonable Agreement ◽  
Microstrip Line ◽  
Return Loss ◽  
Power Divider ◽  
Mode Analysis ◽  
Analysis Method ◽  
Low Loss ◽  
High Isolation ◽  
Measured Input

AbstractA four-way suspended-stripline power divider is presented in this letter. The power dividing network is designed by using the suspended stripline, while the isolation network is designed by using the microstrip line. The vias are used to connect the power dividing network and the isolation network. The even- and odd-mode analysis method is applied to design the presented power divider. The simulated and measured results of the presented power divider show reasonable agreement with each other. The measured input return loss in the band is greater than 28 dB (7.92 to 9.53 GHz), while the measured insertion loss is less than 0.37 dB. The measured output return loss is greater than 20 dB from 7.82 to 9.86 GHz. Besides, the measured output isolation is greater than 20 dB.

System Co-Design Modeling Methodology of a High Speed (25Gbps) Multi-Rate 4-Channel Retimer: Simulation to Measurement Correlation

2018 ◽  
Vol 2018 (1) ◽  
pp. 000180-000185
Author(s):  
Tony Tang ◽  
Bridger Wray ◽  
Rajen Murugan
Keyword(s):  
Modeling And Simulation ◽  
Insertion Loss ◽  
Power Supply ◽  
High Speed ◽  
Return Loss ◽  
Electrical Performance ◽  
Laboratory Measurements ◽  
Simulation Methodology ◽  
Modeling Methodology ◽  
Bga Package

Abstract In this paper we detail the system (viz. silicon-package-pcb) electrical co-design of a 130nm BiCMOS high-speed (25Gbps) 4-channel multi-rate retimer, packaged in a small 6-mm × 6-mm FC BGA package, with integrated advanced signal conditioning circuitries. Electrical optimization of the silicon-package-pcb over the high speed channels, to achieve desired performance, was achieved through a coupled circuit-to-electromagnetic co-design modeling and simulation methodology. Key figure of merits for system electrical performance (viz. insertion loss, return loss, crosstalk/isolation, jitter, and power supply inductance and resistance parasitics, among others) are modeled and analyzed. Laboratory measurements on a retimer are presented that validate the integrity of the modeling methodology. Good correlation between modeling methodology and laboratory measurements is achieved.

scholarly journals A Novel Simulation Method for Analyzing Diode Electrical Characteristics Based on Neural Networks

Electronics ◽  
2021 ◽  
Vol 10 (19) ◽  
pp. 2337
Author(s):  
Tao Liu ◽  
Le Xu ◽  
Yao He ◽  
Han Wu ◽  
Yong Yang ◽  
...  
Keyword(s):  
Neural Network ◽  
Equivalent Circuit ◽  
Physical Model ◽  
High Frequency ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Training Data ◽  
Electrical Characteristics ◽  
Large Injection ◽  
Equivalent Circuit Method

Based on the equivalent circuit model and physical model, a new method for analyzing diode electrical characteristics based on a neural network model is proposed in this paper. Although the equivalent circuit model is widely used, it cannot effectively reflect the working state of diode circuits under the conditions of large injection and high frequency. The analysis method based on physical models developed in recent years can effectively resolve the above shortcomings, but it faces the problem of a low simulation efficiency. Therefore, the physical model method based on neural network acceleration is used to improve the traditional, equivalent circuit model. The results obtained from the equivalent circuit model and the physical model are analyzed using the finite-difference time-domain method. The diode model based on a neural network is fitted with training data obtained from the results of the physical model, then it is summarized into a voltage–current equation and used to improve the traditional, equivalent circuit method. In this way, the improved equivalent circuit method can be used to analyze the working state of a diode circuit under large injection and high frequency conditions. The effectiveness of the proposed model is verified by some examples.

Highly compact UWB bandpass filter based on composite right/left-handed transmission line and meander fractal like ring slot in ground

2016 ◽  
Vol 9 (5) ◽  
pp. 1037-1044
Author(s):  
Babu Lal Shahu ◽  
Srikanta Pal ◽  
Neela Chattoraj ◽  
Dileep Kumar Upadhyay
Keyword(s):  
Transmission Line ◽  
Insertion Loss ◽  
Return Loss ◽  
Bandpass Filter ◽  
Ground Plane ◽  
Equivalent Circuit Model ◽  
Ultra Wideband ◽  
Left Handed ◽  
Conductor Strip ◽  
Better Than

An ultra-wideband (UWB) highly compact bandpass filter with extremely high passband bandwidth is presented. The proposed structure is made using three-staged stepped-impedance lines and a composite right/left-handed transmission line (CRLH-TL) synthesized with meander fractal like ring slot in the ground and series capacitive gap in conductor strip. The capacitive gap in conductor strip and meander fractal like ring slot in the ground plane play major role for controlling the lower and higher cut-off frequencies. The equivalent circuit model of proposed filter is demonstrated and lumped parameters are extracted. A prototype is fabricated to experimentally validate the performance of proposed filter. The proposed UWB filter has extremely wide −10 dB return loss passband bandwidth from 3.14 to 18.26 GHz with relative bandwidth of 142% and insertion loss better than 0.5 dB. Also it achieves a wide upper-stopband from 19.7 to 24.4 GHz with insertion loss better than 13.0 dB, return loss <1.5 dB and sharpened rejection skirts outside the passband at both lower and upper frequency ends. Good agreement is found between simulated and measured results with measured group delay variation in the passband <0.65 ns.

Newly Developed Switching Analysis Method for 3.3 kV 400 a Full SiC Module

2016 ◽  
Vol 858 ◽  
pp. 1099-1102 ◽  
Author(s):  
Satoshi Hatsukawa ◽  
Shigenori Toyoshima ◽  
Takashi Tsuno ◽  
Yasuki Mikamura
Keyword(s):  
Equivalent Circuit ◽  
Current Distribution ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Analysis Method

We have demonstrated a new analysis method using a precise equivalent circuit of 3.3 kV 400 A full SiC modules and showed that the calculated waveforms well agree with the measured waveforms. We have also examined the current distribution in the module by utilizing this equivalent circuit model.

Compact multi-layer N-way power divider with closed-ring-shaped isolation network

2017 ◽  
Vol 9 (10) ◽  
pp. 1945-1949 ◽  
Author(s):  
Shunyong Hu ◽  
Kaijun Song ◽  
Yong Fan
Keyword(s):  
Equivalent Circuit ◽  
Return Loss ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Power Divider ◽  
Total Size ◽  
Closed Ring ◽  
S Matrix

A compact multi-layer N-way power-dividing structure with good isolation and output return loss performance is proposed. The isolation network is circularly distributed that constitutes a closed ring-shaped architecture. The equivalent circuit model is given and the [S] matrix is developed to analyse and design the power-dividing structure. Finally, a six-way power divider centered at 2.1 GHz is designed and fabricated. The measured and simulated results agree well with each other. The total size of the power divider is 0.13λg × 0.19λg.

Sign in / Sign up

Export Citation Format

Share Document