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Copyright of Telecommunication Engineering is the property of Telecommunication Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Machine Tool & Hydraulics is the property of Guangzhou Mechanical Engineering Research Institute (GMERI) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Journal of Guangdong University of Technology is the property of Journal of Guangdong University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Chongqing University of Technology (Natural Science) is the property of Chongqing University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Mine Automation is the property of Industry & Mine Automation Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Telecommunication Engineering is the property of Telecommunication Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Ordnance Industry Automation is the property of Editorial Board for Ordnance Industry Automation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Mine Automation is the property of Industry & Mine Automation Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Test & Measurement Technology is the property of Publishing Center of North University of China and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Piezoelectrics & Acoustooptics is the property of Piezoelectric & Acoustooptic and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Telecommunication Engineering is the property of Telecommunication Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of South China Normal University (Natural Science Edition) / Huanan Shifan Daxue Xuebao (Ziran Kexue Ban) is the property of Journal of South China Normal University (Natural Science Edition) Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Systems Engineering & Electronics is the property of Journal of Systems Engineering & Electronics Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Systems Engineering & Electronics is the property of Journal of Systems Engineering & Electronics Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In order to solve the problem of insufficient carrier space caused by the antenna loaded inside the conical seeker, the conformal four arm conical spiral antenna which applied to the main frequency of 1.575 GHz satellite positioning communication system was designed. A planar microstrip antenna is used to surround the conical logarithmic spiral antenna outside the conical seeker for reducing the inner space occupied by the conical seeker. The designed antenna is equipped with four identical spiral radiation patches, and circular polarization is realized by feeding matching network. The measurement shows that the antenna has good performance, when the axial ratio is 2.5 dB, the test direction ±60°, the maximum gain is 5 dB, and the space occupied by the antenna inside the conical seeker is completely saved. [ABSTRACT FROM AUTHOR]

Copyright of Piezoelectrics & Acoustooptics is the property of Piezoelectric & Acoustooptic and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Piezoelectrics & Acoustooptics is the property of Piezoelectric & Acoustooptic and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Telecommunication Engineering is the property of Telecommunication Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Telecommunication Engineering is the property of Telecommunication Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Telecommunication Engineering is the property of Telecommunication Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

EPS system is an indispensable component of intelligent driving vehicles and one of the modules with the highest safety level. In order to simplify the EPS system works in real - time dynamic torque measurement system hardware composition, increase torque measuring precision, reduce response time, this paper proposes a passive wireless type surface acoustic wave EPS torque meas¬urement system using a microstrip antenna as a signal treinsmission antenna. HFSS 15.0 software is used to conduct 3 d modeling and simulation optimization for the structure of coaxial underplane fed microstiip rectangular antenna, solve the optimal structure size of the antenna, process the real antenna and build the torque test bench for the electric power steering system. The test results show that the SAW torque measurement system designed in this paper can meet the requirements of dynamic torque measurement when the vehicle is turning, which is easy to arrange, saves installation space and can transmit torque signal wirelessly. The research content of this paper can provide reference for the measurement of other dynamic performance parameters of intelligent driving vehicles. [ABSTRACT FROM AUTHOR]

Copyright of Electronic Components & Materials is the property of Electronic Components & Materials and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Electronic Components & Materials is the property of Electronic Components & Materials and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

For the fact that there are few designs of multi-frequency antenna suitable for Bluetooth, radio frequency identification (RFID),WiMAX and wireless local area network (WLAN) application simultaneously, a new miniaturized broadband multi-frequency monopole microstrip antenna is proposed. The proposed antenna mainly consists of a rectangular ring, a hexagonal ring with a gap, three rectangular strips and a defected ground plane (DGP). The proposed antenna can excite three separate impedance bandwidths to cover all the 2.4/5. 2/5. 8 GHz Bluetooth/WLAN/RFID operating bands and the 2.5/3. 5/5. 5 GHz WiMAX bands. It provides three impedance bandwidths of 0. 11 GHz, 0.86 GHz and 1. 11 GHz for the working bands of 2. 38 ~2.49 GHz centered at 2.47 GHz,3. 19~4.05 GHz centered at 3.48 GHz and 4. 95 ~6. 06 GHz centered at 5. 55 GHz, respectively. Furthermore,the 5. 75 dBi of relative high gain is achieved. A prototype is experimentally tested, and the measured results show its good radiation patterns and enough gains across the operation bands. It can be applied in present wireless communication system. [ABSTRACT FROM AUTHOR]

A monolayer broadband antenna with surveying for global navigation satellite system (GNSS) is presented, and a monolayer high-performance composite is chosen as the common dielectric substrate of the dual-frequency microstrip antenna. Dual -band radiation patches use a coplanar sawtooth structure, and some short- circuit probes distributed on the edge of the antenna can improve axial-ratio bandwidth and low elevation gain of antenna. The four-feed network is designed to achieve a stability reliable phase center of antenna. The 5 dBi radiation gain bandwidths of dual-frequency antenna are both greater than 245 MHz, and the 3 dB axial-ratio bandwidth of high-frequency antenna unit and of low-frequency antenna unit are -76° ~ 76° and -116° ~ 116° respectively, and the gain slide of antenna is less than 11. 5 dB in low angle of elevation for 90°. The experimental results show that the simulation results and the testing results are in agreement. The measured spectrum shows that the developed antenna can cover all corresponding operating bandwidth for GNSS. Especially it is suitable for the terminal equipment of precision measurement and positioning for GNSS. [ABSTRACT FROM AUTHOR]

Reducing the crosstalk between coupled microstrip lines is very important for high-speed and high-density PCB. The crosstalk testing structure was established between PCB-coupled microstrip lines under the condition of termination match. Through finite element analysis and experimental test, the crosstalk between coupled microstrip lines has been investigated with or without metal filled via hole fence. The dependence of crosstalk with the width of stripe protection and grounding hole space between lines was examined. Numerical analysis and experimental results indicate that the best effect of crosstalk reduction can be obtained when an optimum value of stripe protection wid:h is chosen, the attenuation of near-end crosstalk is 9 dB more compared with no strip protection and far-end crosstalk attenuation is 7 dB more. The crosstalk suppression of non-parallel microstrip lines using strip protection with increased width is equally effective. A critical space condition must be satisfied between protective grounding holes, while the radius variation of grounding hole does not affect the crosstalk. This research seems to be instructive for effective use of stripe protection to reduce crosstalk between microstrip lines. [ABSTRACT FROM AUTHOR]

The development of a Ka-band monopulse variable polarization antenna is presented, based on polarization synthesis theory. This kind of microstrip array antenna consists of several linearly polarized subarrays of rotational symmetry, and change the polarization mode by adjusting the phase of each subarray. The circular polarization of three subarrays and four subarrays has high polarization purity with over 30 dB cross-polarization and less than 3 dB axial ratio within the half power beamwidth; and the imbalance of two peaks in difference beam is less than 1 dB, and null depth is over 30 dB. [ABSTRACT FROM AUTHOR]

Based on the mechanism of the microstrip antenna, two practical broadband antennas, namely the stacked dual-patch and the capacitance compensated one, operated in the L and C band, respectively, are simulated by the conformal FDTD method. The results showed that the impedance bandwidths are improved significantly compared with the conventional single patch case. In order to treat the coaxial probe feeding easily in the modeling, a suitable coordinate transform is introduced. In addition, the non-uniform meshing technique is employed to accelerate numerical simulation. [ABSTRACT FROM AUTHOR]