scholarly journals Using Multilayered Substrate Integrated Waveguide to Design Microwave Gain Equalizer

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Yongfei Wang ◽  
Dongfang Zhou ◽  
Yi Zhang ◽  
Chaowen Chang
Keyword(s):  
Equivalent Circuit ◽  
Printed Circuit Board ◽  
Circuit Board ◽  
Substrate Integrated Waveguide ◽  
Equivalent Circuit Analysis ◽  
Compact Structure ◽  
Printed Circuit ◽  
Board Process ◽  
Insight Into ◽  
Ku Band

This paper presents the design and experiment of a novel microwave gain equalizer based on the substrate integrated waveguide (SIW) technique. The proposed equalizer is formed by an SIW loaded by SIW resonators, which has very compact structure and can compensate for gain slope of microwave systems. Equivalent circuit analysis is given about the proposed structure for a better insight into the structure’s response. A Ku-Band equalizer with four SIW resonators is simulated and fabricated with a multilayer printed circuit board process. The measured results show good performance and agreement with the simulated results; an attenuation slope of −4.5 dB over 12.5–13.5 GHz is reached with a size reduction of 76%.

Substrate-integrated waveguide cross-coupled filters with mixed electric and magnetic coupling structure

2018 ◽  
Vol 10 (8) ◽  
pp. 896-903 ◽  
Author(s):  
Amit Ranjan Azad ◽  
Dharmendra Kumar Jhariya ◽  
Akhilesh Mohan
Keyword(s):  
Printed Circuit Board ◽  
Single Layer ◽  
Magnetic Coupling ◽  
Frequency Selectivity ◽  
Circuit Board ◽  
Substrate Integrated Waveguide ◽  
Transmission Zeros ◽  
Coupling Structure ◽  
Board Process ◽  
Good Agreement

AbstractThis paper presents a substrate-integrated waveguide (SIW) mixed electric and magnetic coupling structure implemented on a single-layer substrate to create finite transmission zeros (TZs), which can be used to design microwave filters with higher frequency selectivity. Mixed coupling is realized by three slot-lines on the top metal plane combined with an iris-window between two adjacent SIW cavities. The electric and magnetic coupling can be separately controlled by adjusting the dimensions of the slot-lines and the width of the iris-window, and a controllable TZ below or above the passband can be produced. Furthermore, a detailed analysis of the mixed coupling structure is presented. To demonstrate the validity of the proposed structure, third- and fourth-order cross-coupled generalized Chebyshev bandpass filters are designed and fabricated using the standard printed circuit board process. The experimental results are in good agreement with the simulation results. The filters exhibit simple structure and good frequency selectivity.

Compact SIW directional filter using substrate integrated circular cavities

2020 ◽  
Vol 12 (5) ◽  
pp. 352-355
Author(s):  
Mohammad Sajjad Bayati ◽  
Tahsin Khorand
Keyword(s):  
Printed Circuit Board ◽  
Simple Structure ◽  
Circuit Board ◽  
Circular Cavity ◽  
Printed Circuit ◽  
Directional Filter ◽  
Compact Size ◽  
Degenerate Modes ◽  
Board Process ◽  
Better Than

AbstractIn this paper, a novel directional filter (DF) is proposed and implemented using substrate integrated waveguide (SIW) technology which exhibits the advantages of compact size and simple structure. The proposed DF is realized by two half mode substrate integrated waveguides (HMSIWs) and two substrate integrated circular cavity (SICC) resonators operating in the TM110 degenerate modes in which an aperture is utilized to realize the coupling between HMSIWs and SICCs. Two slotlines with appropriate dimensions, etched on the top and bottom planes, are utilized in order to control coupling strength between two cascaded SICC resonators. The proposed two-circular cavity SIW DF at 12.3 GHz is designed and fabricated with a normal printed circuit board process. Measured and simulated results indicate that the DF has a 3.25% bandwidth, and the return loss as well as isolation are better than 10.5 and 15 dB, respectively.

Millimeter-Wave Printed Circuit Board Characterization Using Substrate Integrated Waveguide Resonators

2012 ◽  
Vol 60 (10) ◽  
pp. 3300-3308 ◽  
Author(s):  
Dmitry E. Zelenchuk ◽  
Vincent Fusco ◽  
George Goussetis ◽  
Antonio Mendez ◽  
David Linton
Keyword(s):  
Millimeter Wave ◽  
Printed Circuit Board ◽  
Circuit Board ◽  
Substrate Integrated Waveguide ◽  
Printed Circuit ◽  
Waveguide Resonators

Principle and structure of a printed circuit board process–based piezoelectric microfluidic pump integrated into printed circuit board

2019 ◽  
Vol 30 (17) ◽  
pp. 2595-2604 ◽  
Author(s):  
Dai-Hua Wang ◽  
Lian-Kai Tang ◽  
Yun-Hao Peng ◽  
Huai-Qiang Yu
Keyword(s):  
Flow Rate ◽  
Printed Circuit Board ◽  
Flow Characteristics ◽  
Circuit Board ◽  
Microfluidic Systems ◽  
Printed Circuit ◽  
Board Processes ◽  
Voltage Frequency ◽  
Instantaneous Flow Rate ◽  
Board Process

Considering mature printed circuit board processes, researches on microfluidic pumps that can be integrated into printed circuit board will provide a solution for further miniaturization and integration of microfluidic systems with low costs. The principle and structure of a printed circuit board process–based piezoelectric microfluidic pump integrated into printed circuit board are proposed and realized in this article. The printed circuit board process–based design and manufacturing technology of a piezoelectric microfluidic pump integrated into printed circuit board is researched utilizing printed circuit board as a platform. The flow characteristics of the fabricated microfluidic pump are experimentally tested. The research results show that the proposed principle and structure of the piezoelectric microfluidic pump can be fabricated utilizing mature printed circuit board process with advantages of simple structure and convenient processing. The fabricated printed circuit board process–based microfluidic pump can linearly pump in and pump out fluid with self-injection. Moreover, the flow rate and back pressure can be controlled by changing the peak-to-peak value, frequency, and phase difference of the driving voltages. The instantaneous flow rate has the pulsation property consistent with the drive voltage frequency. The proposed principle and structure are beneficial to integrate the fabricated printed circuit board process–based microfluidic pump with other microfluidic components to realize complicated microfluidic systems on printed circuit board.

The Design Principle and Application of Power Resistor with over Temperature and over Current Protection Function

2012 ◽  
Vol 562-564 ◽  
pp. 1501-1504 ◽  
Author(s):  
Sa Zhang ◽  
Zhong Hou Xu ◽  
Shi Chen ◽  
You Sheng Xu ◽  
Gen Hua Wu
Keyword(s):  
Design Principle ◽  
Printed Circuit Board ◽  
Circuit Board ◽  
Compact Structure ◽  
Printed Circuit ◽  
Size And Shape ◽  
Wave Soldering ◽  
Technological Improvement

A power resistor with over temperature and over current protection function was designed in this paper, we developed a compact structure innovatively which integrated thermal cutoff and wire wound resistor in a tubular case. It has the same size and shape as a resistor without Printed Circuit Board redesign, offer higher security and wave-soldering. It is really a very important technological improvement and breakthrough in over-heat protective field of wire wound resistor .

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