Pub Date : 2013-07-21DOI: 10.1109/CSQRWC.2013.6657346
Bolin Tang, Qiantao Cao
Laser technology becomes the preferred way in the fabrication of grounding holes of interdigital bandpass filter on the Al2O3 substrates. The relative position errors of grounding holes are unavoidable because of serial processing of drilling holes. The performances of interdigital bandpass filters with grounding holes of 0.25mm diameter and relative position errors of 0.02mm in the longitudinal or horizontal direction were mainly discussed. The frequency responses were investigated by means of simulation, experiment verification, and theoretical analysis in this paper. The results showed that relative position errors of 0.02mm in different direction had completely different effects on the properties of interdigital bandpass filters. Grounding holes overall shifting 0.02mm in the longitudinal direction leads to the frequency response deterioration about 4dB around 18GHz in the passband of 16-20GHz, because the electrical length of the coupling units is changed. While grounding holes overall shift 0.02mm in the horizontal direction, passband of filter is flat and without obvious frequency response deterioration. Priority should be given to ensure the longitudinal accuracy of grounding holes in the process of manufacture.
{"title":"Effects of relative position errors of grounding holes on the performances of interdigital bandpass filters","authors":"Bolin Tang, Qiantao Cao","doi":"10.1109/CSQRWC.2013.6657346","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657346","url":null,"abstract":"Laser technology becomes the preferred way in the fabrication of grounding holes of interdigital bandpass filter on the Al2O3 substrates. The relative position errors of grounding holes are unavoidable because of serial processing of drilling holes. The performances of interdigital bandpass filters with grounding holes of 0.25mm diameter and relative position errors of 0.02mm in the longitudinal or horizontal direction were mainly discussed. The frequency responses were investigated by means of simulation, experiment verification, and theoretical analysis in this paper. The results showed that relative position errors of 0.02mm in different direction had completely different effects on the properties of interdigital bandpass filters. Grounding holes overall shifting 0.02mm in the longitudinal direction leads to the frequency response deterioration about 4dB around 18GHz in the passband of 16-20GHz, because the electrical length of the coupling units is changed. While grounding holes overall shift 0.02mm in the horizontal direction, passband of filter is flat and without obvious frequency response deterioration. Priority should be given to ensure the longitudinal accuracy of grounding holes in the process of manufacture.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132822600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-07-21DOI: 10.1109/CSQRWC.2013.6657442
Der-Chin Chen, Shih-Wen Lee
In this paper we demonstrate a new alignment device in which we use the five parallel laser beams each set to rapidly and accurately align their corresponding optical axis of porro prism binocular (PPB). At all interpupillary distances (IPD), this technique assures parallelized right and left optics axis of PPB. In this method the left and right optical axis of a PPB are made parallel to each central beam of two “five parallel laser beams alignment devices” in the plane of incidence. And above process is assured by examining the direction of these five transmitted laser beams that transmitted through PPB in the way that the height and orientation of the PPB are fine tuned. The parallelism of the left and right optical axis of the PPB was measured by laser rangefinder. This novel method is used to obtain the parallelism of left and right optical axis of PPB in a maximum tolerance of three arc minute.
{"title":"A new alignment device for the optical axes of porro prism binocular","authors":"Der-Chin Chen, Shih-Wen Lee","doi":"10.1109/CSQRWC.2013.6657442","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657442","url":null,"abstract":"In this paper we demonstrate a new alignment device in which we use the five parallel laser beams each set to rapidly and accurately align their corresponding optical axis of porro prism binocular (PPB). At all interpupillary distances (IPD), this technique assures parallelized right and left optics axis of PPB. In this method the left and right optical axis of a PPB are made parallel to each central beam of two “five parallel laser beams alignment devices” in the plane of incidence. And above process is assured by examining the direction of these five transmitted laser beams that transmitted through PPB in the way that the height and orientation of the PPB are fine tuned. The parallelism of the left and right optical axis of the PPB was measured by laser rangefinder. This novel method is used to obtain the parallelism of left and right optical axis of PPB in a maximum tolerance of three arc minute.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126112521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-07-21DOI: 10.1109/CSQRWC.2013.6657415
Ruike Yang, Li Li, Zhenwei Zhao, Yizhi Zhang
According to Auto regression moving average theory, the ARIMA model is established based on the E M-B rain time series method and ITU-R rain parameters. The rain attenuation time series are simulated by ARIMA model at Beijing and Haikou area, at 12.5GHz. The probability of the duration time statistical for rain attenuation series of 50 simulative events is analyzed. A comparion among the results of simulated with measured and ITU-R predicted is done at Beijing and Haikou. It is shown that when duration time is smaller than several hundred second, the statistical results simulated by ARIMA are basically in agreement with the results by measuring and ITU-R predicting, but for the longer duration time, the difference among them is obvious. This shows that the ARIMA(3,1,3) model can be applied to the simulation of rain attenuation time series at Beijing and Haikou, but for longer duration time it is required to improve.
{"title":"Simulation of rain attenuation time series by ARIMA model","authors":"Ruike Yang, Li Li, Zhenwei Zhao, Yizhi Zhang","doi":"10.1109/CSQRWC.2013.6657415","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657415","url":null,"abstract":"According to Auto regression moving average theory, the ARIMA model is established based on the E M-B rain time series method and ITU-R rain parameters. The rain attenuation time series are simulated by ARIMA model at Beijing and Haikou area, at 12.5GHz. The probability of the duration time statistical for rain attenuation series of 50 simulative events is analyzed. A comparion among the results of simulated with measured and ITU-R predicted is done at Beijing and Haikou. It is shown that when duration time is smaller than several hundred second, the statistical results simulated by ARIMA are basically in agreement with the results by measuring and ITU-R predicting, but for the longer duration time, the difference among them is obvious. This shows that the ARIMA(3,1,3) model can be applied to the simulation of rain attenuation time series at Beijing and Haikou, but for longer duration time it is required to improve.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123464281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-07-21DOI: 10.1109/CSQRWC.2013.6657454
E. Lu, Chih-Wen Shih
An algorithm for correcting both an error and an erasure of (2m,2m-3) extended RS codes is proposed in this paper. Using the algorithm, error locations and error values can be found by skipping the procedures of determining error location polynomial, finding the roots and calculating the deviation of error location polynomial; therefore, the decoding algorithm is very simple and fast.
{"title":"An error/erasure decoding algorithm of (2m,2m−3) extended RS codes","authors":"E. Lu, Chih-Wen Shih","doi":"10.1109/CSQRWC.2013.6657454","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657454","url":null,"abstract":"An algorithm for correcting both an error and an erasure of (2m,2m-3) extended RS codes is proposed in this paper. Using the algorithm, error locations and error values can be found by skipping the procedures of determining error location polynomial, finding the roots and calculating the deviation of error location polynomial; therefore, the decoding algorithm is very simple and fast.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122145380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-07-21DOI: 10.1109/CSQRWC.2013.6657371
Xin He, Jun Hu, Z. Nie
This paper introduces a new-type combination of excitations to reduce the amount of data needed for monostatic excitation vectors, instead of multiple excitations over a wide angle. And based on MLFMA we used Compressive Sensing (CS) technique to recover original signal. Numerical results demonstrate that the combination of excitations is efficient to solve 3D monostatic scattering problems.
{"title":"Application of combination of excitations and compressed sensing for fast computation of monostatic scattering","authors":"Xin He, Jun Hu, Z. Nie","doi":"10.1109/CSQRWC.2013.6657371","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657371","url":null,"abstract":"This paper introduces a new-type combination of excitations to reduce the amount of data needed for monostatic excitation vectors, instead of multiple excitations over a wide angle. And based on MLFMA we used Compressive Sensing (CS) technique to recover original signal. Numerical results demonstrate that the combination of excitations is efficient to solve 3D monostatic scattering problems.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"414 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124179645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-07-21DOI: 10.1109/CSQRWC.2013.6657399
Li-Pin Chi, Yun-Chen Chih, Tian-Fu Hung, S. Deng, Ching‐Long Tsai, S. Bor, Pen-Chen Chou, Yen-Chang Chu
A novel printed dipole antenna with helix structure fed by a coplanar waveguide, suitable for 2.4 GHz and 5.2~5.85 GHz WLAN application is presented and investigated in this paper. The helix structure is designed so that the antenna length has a reduction then traditional printed dipole antenna. Some effects of many important parameters on the return loss and gain value of the proposed antenna have been investigated. In order to operate as WLAN device, the dipole antenna with helix structure should be cover the operation bandwidth of the 2.4 GHz and 5.2~5.85 GHz, and omni-directional radiation patterns are achieved at two operating bands.
{"title":"A dipole antenna with helix structure applied to the WLAN systems","authors":"Li-Pin Chi, Yun-Chen Chih, Tian-Fu Hung, S. Deng, Ching‐Long Tsai, S. Bor, Pen-Chen Chou, Yen-Chang Chu","doi":"10.1109/CSQRWC.2013.6657399","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657399","url":null,"abstract":"A novel printed dipole antenna with helix structure fed by a coplanar waveguide, suitable for 2.4 GHz and 5.2~5.85 GHz WLAN application is presented and investigated in this paper. The helix structure is designed so that the antenna length has a reduction then traditional printed dipole antenna. Some effects of many important parameters on the return loss and gain value of the proposed antenna have been investigated. In order to operate as WLAN device, the dipole antenna with helix structure should be cover the operation bandwidth of the 2.4 GHz and 5.2~5.85 GHz, and omni-directional radiation patterns are achieved at two operating bands.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127869466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-07-21DOI: 10.1109/CSQRWC.2013.6657429
Zhou Qianneng, Xue Rong, Li Hongjuan, Lin Yunsong, Tang Liang, Zhai Pengpeng
In this paper, a high PSRR bandgap voltage reference (BGR) is designed for DC-DC converter by adopting pre-regulator technique. The designed BGR is analyzed and simulated in CSMC 0.5μm CMOS mixed signal process. When temperature is in the range from -30°C to 75°C, the temperature coefficient of the BGR output voltage Vref is only 19ppm/°C. Vref has only deviation of 0.29mV when power supply voltage VDD changes from 2.5V to 9V. By adopting pre-regulator technique, the PSRR of the designed BGR output voltage Vref at 10Hz, 100Hz, 1kHz, 10kHz and 100kHz achieves -98.41dB, -98.38dB, -96.28dB, -78.24dB and -43.39dB respectively.
{"title":"Design of bandgap voltage reference for DC-DC converter","authors":"Zhou Qianneng, Xue Rong, Li Hongjuan, Lin Yunsong, Tang Liang, Zhai Pengpeng","doi":"10.1109/CSQRWC.2013.6657429","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657429","url":null,"abstract":"In this paper, a high PSRR bandgap voltage reference (BGR) is designed for DC-DC converter by adopting pre-regulator technique. The designed BGR is analyzed and simulated in CSMC 0.5μm CMOS mixed signal process. When temperature is in the range from -30°C to 75°C, the temperature coefficient of the BGR output voltage V<sub>ref</sub> is only 19ppm/°C. V<sub>ref</sub> has only deviation of 0.29mV when power supply voltage V<sub>DD</sub> changes from 2.5V to 9V. By adopting pre-regulator technique, the PSRR of the designed BGR output voltage V<sub>ref</sub> at 10Hz, 100Hz, 1kHz, 10kHz and 100kHz achieves -98.41dB, -98.38dB, -96.28dB, -78.24dB and -43.39dB respectively.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127923394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-07-21DOI: 10.1109/CSQRWC.2013.6657393
Lihong Wang, Liyun Yan, Wenmei Zhang
A compact and wideband square monopole antenna is designed in this paper. The designed antenna comprises a square radiating patch with H- slot and a ground plane H-conductor plane. Also, it has a small size of 14 mm × 14 mm. The results show that it can operate at a bandwidth of 4.7 GHz-12.2 GHz. Moreover, in the whole band, the antenna basically keeps the same radiation pattern and the average measured gain is 4.8 dBi. The measured results are in agreement with the simulated results.
{"title":"Research and design of the compact and wideband square monopole antenna","authors":"Lihong Wang, Liyun Yan, Wenmei Zhang","doi":"10.1109/CSQRWC.2013.6657393","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657393","url":null,"abstract":"A compact and wideband square monopole antenna is designed in this paper. The designed antenna comprises a square radiating patch with H- slot and a ground plane H-conductor plane. Also, it has a small size of 14 mm × 14 mm. The results show that it can operate at a bandwidth of 4.7 GHz-12.2 GHz. Moreover, in the whole band, the antenna basically keeps the same radiation pattern and the average measured gain is 4.8 dBi. The measured results are in agreement with the simulated results.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121112309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A new compact differential dual-frequency antenna with signal layer substrate is described, and the antenna is symmetric. Compared with the conventional differential dual-frequency antenna, the split-rectangle ring ground plane is attached on the back,and the two E-shaped microstrip patches with feeding line are printed on the top of the substrate, thus the dimension of the antenna is reduced effectively. The four sunken jaws are introduced into the split-rectangle ring, which can adjust the high resonant band to the operation band(5.5GHz).Then the antenna is fabricated and measured. The realized antenna has a compact size of 14mm×28mm×0.5mm. Experimental results show that the proposed antenna can operate at 2.4 GHz(f1) and 5.5 GHz (f2)bands. Good agreement between the simulated and measured results is obtained.
{"title":"Design of a compact differential dual-frequency antenna","authors":"Zhang Xiao-kuan, Zhou Chao, Zheng Long, Zhang Chen-xin","doi":"10.1109/CSQRWC.2013.6657389","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657389","url":null,"abstract":"A new compact differential dual-frequency antenna with signal layer substrate is described, and the antenna is symmetric. Compared with the conventional differential dual-frequency antenna, the split-rectangle ring ground plane is attached on the back,and the two E-shaped microstrip patches with feeding line are printed on the top of the substrate, thus the dimension of the antenna is reduced effectively. The four sunken jaws are introduced into the split-rectangle ring, which can adjust the high resonant band to the operation band(5.5GHz).Then the antenna is fabricated and measured. The realized antenna has a compact size of 14mm×28mm×0.5mm. Experimental results show that the proposed antenna can operate at 2.4 GHz(f1) and 5.5 GHz (f2)bands. Good agreement between the simulated and measured results is obtained.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121052357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-07-21DOI: 10.1109/CSQRWC.2013.6657395
R. Y. Li, Wang Jian, Luo Tian guang
The grating lobe reduction methods for non-equidistant array antennas in X-Band are proposed in this paper. The following methods are investigated: an active element pattern control, irregular arrangement of subarrays. A horn antenna element is designed to obtain a perfect active element pattern of an array, and a ring-grid aperiodic array composed of trapezoid subarrays with 1664 elements that are irregular arranged is designed. It is worth mentioning that the combination of these two methods can suppress the grating lobes dramatically in limited-scan phased array. In addition, it is more grating lobes reduction using the combination of these two methods compared with other methods for suppressing grating lobes.
{"title":"Research on grating lobe reduction in limited-scan phased array antenna","authors":"R. Y. Li, Wang Jian, Luo Tian guang","doi":"10.1109/CSQRWC.2013.6657395","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657395","url":null,"abstract":"The grating lobe reduction methods for non-equidistant array antennas in X-Band are proposed in this paper. The following methods are investigated: an active element pattern control, irregular arrangement of subarrays. A horn antenna element is designed to obtain a perfect active element pattern of an array, and a ring-grid aperiodic array composed of trapezoid subarrays with 1664 elements that are irregular arranged is designed. It is worth mentioning that the combination of these two methods can suppress the grating lobes dramatically in limited-scan phased array. In addition, it is more grating lobes reduction using the combination of these two methods compared with other methods for suppressing grating lobes.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116949752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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