Pub Date : 2012-10-18DOI: 10.1109/APCAP.2012.6333148
Y. Liu, Wen Jiang, S. Gong
Bionics principle is widely applied in many fields. The application of bionics in antenna design is relatively not so common. Some examples are illustrated in this paper to show the use of bionics in antenna design. The results show that it is efficient and valid to design antennas with the bionics principles.
{"title":"Application of bionics in antenna designs","authors":"Y. Liu, Wen Jiang, S. Gong","doi":"10.1109/APCAP.2012.6333148","DOIUrl":"https://doi.org/10.1109/APCAP.2012.6333148","url":null,"abstract":"Bionics principle is widely applied in many fields. The application of bionics in antenna design is relatively not so common. Some examples are illustrated in this paper to show the use of bionics in antenna design. The results show that it is efficient and valid to design antennas with the bionics principles.","PeriodicalId":178493,"journal":{"name":"2012 IEEE Asia-Pacific Conference on Antennas and Propagation","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121631063","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 : 2012-10-18DOI: 10.1109/APCAP.2012.6333188
Shih-Hsun Chang, Wen-Jiao Liao
A novel compact antenna design that covers most the LTE-Advanced bands is proposed. The antenna, which comprises a thin, etched metal layer, can be patched to the notebook computer hinge. The bended radiator has a small antenna volume and uses the notebook hinge as its support. Two operation bands are available. The lower band covers 698 to 860 MHz and the higher band extends from 1710 to 2690 MHz. Several band broadening and antenna miniaturizing techniques were employed, including the use of parasitic elements, meandered structures, branched structures and a lump element. Simulations and measurements were conducted to verify that the antenna, which is surrounded by metal sheets emulating notebook display and keyboard panels, can function properly. Desirable performance features such as reasonable radiation efficiency, good impedance matching, and omni-directional coverage were observed.
{"title":"A compact 3D antenna with comprehensive LTE band coverage for use on notebook hinge","authors":"Shih-Hsun Chang, Wen-Jiao Liao","doi":"10.1109/APCAP.2012.6333188","DOIUrl":"https://doi.org/10.1109/APCAP.2012.6333188","url":null,"abstract":"A novel compact antenna design that covers most the LTE-Advanced bands is proposed. The antenna, which comprises a thin, etched metal layer, can be patched to the notebook computer hinge. The bended radiator has a small antenna volume and uses the notebook hinge as its support. Two operation bands are available. The lower band covers 698 to 860 MHz and the higher band extends from 1710 to 2690 MHz. Several band broadening and antenna miniaturizing techniques were employed, including the use of parasitic elements, meandered structures, branched structures and a lump element. Simulations and measurements were conducted to verify that the antenna, which is surrounded by metal sheets emulating notebook display and keyboard panels, can function properly. Desirable performance features such as reasonable radiation efficiency, good impedance matching, and omni-directional coverage were observed.","PeriodicalId":178493,"journal":{"name":"2012 IEEE Asia-Pacific Conference on Antennas and Propagation","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126439057","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 : 2012-10-18DOI: 10.1109/APCAP.2012.6333196
K. Takei
Computational design of a symmetric antenna system for wireless power transmission is proposed. The pair of antennas, which consist of small conductive segments, provides the two-port circuit of which ports are feeding points of the antennas. The two-port parameters of this circuit, which are obtained using the method of moments, and the complex impedance of both the power generating and loading circuits enable calculation of the power transmission efficiency. Repetition of the random generation of the segments and numerical calculation of the efficiency provides the antenna design. The numerical results of an example antenna system indicate that the efficiency strongly depends on the value of the real part of the impedance; therefore, precise control of this value is required to maintain better power transmission efficiency.
{"title":"Computational design of power transmission symmetric antenna system","authors":"K. Takei","doi":"10.1109/APCAP.2012.6333196","DOIUrl":"https://doi.org/10.1109/APCAP.2012.6333196","url":null,"abstract":"Computational design of a symmetric antenna system for wireless power transmission is proposed. The pair of antennas, which consist of small conductive segments, provides the two-port circuit of which ports are feeding points of the antennas. The two-port parameters of this circuit, which are obtained using the method of moments, and the complex impedance of both the power generating and loading circuits enable calculation of the power transmission efficiency. Repetition of the random generation of the segments and numerical calculation of the efficiency provides the antenna design. The numerical results of an example antenna system indicate that the efficiency strongly depends on the value of the real part of the impedance; therefore, precise control of this value is required to maintain better power transmission efficiency.","PeriodicalId":178493,"journal":{"name":"2012 IEEE Asia-Pacific Conference on Antennas and Propagation","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125304499","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 : 2012-10-18DOI: 10.1109/APCAP.2012.6333150
E. A. Nasir., Q. Y. Wu, Z. N. Chen, J. Teng, Q. Zhang
Optical transmission through subwavelength holes perforated in metal films in the Terahertz region is enhanced through the coupling of spoof surface plasmons (SSPs) and light. It is known that light transmitted inside the subwavelength hole cavity peaks at certain wavelengths, which correspond to the excitation of the SP modes. This transmission is boosted as the SP modes in both sides of the metal are matched. In this paper, we show that hybridization of plasmonic metal hole-arrays with semiconducting single-walled carbon nanotubes leads to enhanced transmission.
{"title":"Surface plasmon enhanced optical transmission through subwavelength apertures with carbon nanotubes","authors":"E. A. Nasir., Q. Y. Wu, Z. N. Chen, J. Teng, Q. Zhang","doi":"10.1109/APCAP.2012.6333150","DOIUrl":"https://doi.org/10.1109/APCAP.2012.6333150","url":null,"abstract":"Optical transmission through subwavelength holes perforated in metal films in the Terahertz region is enhanced through the coupling of spoof surface plasmons (SSPs) and light. It is known that light transmitted inside the subwavelength hole cavity peaks at certain wavelengths, which correspond to the excitation of the SP modes. This transmission is boosted as the SP modes in both sides of the metal are matched. In this paper, we show that hybridization of plasmonic metal hole-arrays with semiconducting single-walled carbon nanotubes leads to enhanced transmission.","PeriodicalId":178493,"journal":{"name":"2012 IEEE Asia-Pacific Conference on Antennas and Propagation","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131918173","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 : 2012-10-18DOI: 10.1109/APCAP.2012.6333145
Yizhu Shen, C. Law
Wideband circularly-polarized antenna is one of the key components in the wireless systems. This paper briefly reviews the design mechanisms of circularly-polarized antenna, and discusses their advantages and disadvantages. In addition, two circularly-polarized planar antennas for ultra-wideband systems developed in our group are also presented and discussed in this paper.
{"title":"A brief review of wideband circularly-polarized planar antenna design","authors":"Yizhu Shen, C. Law","doi":"10.1109/APCAP.2012.6333145","DOIUrl":"https://doi.org/10.1109/APCAP.2012.6333145","url":null,"abstract":"Wideband circularly-polarized antenna is one of the key components in the wireless systems. This paper briefly reviews the design mechanisms of circularly-polarized antenna, and discusses their advantages and disadvantages. In addition, two circularly-polarized planar antennas for ultra-wideband systems developed in our group are also presented and discussed in this paper.","PeriodicalId":178493,"journal":{"name":"2012 IEEE Asia-Pacific Conference on Antennas and Propagation","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133755645","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 : 2012-10-18DOI: 10.1109/APCAP.2012.6333250
T. Ma, Jyh-Woei Tsai, Kai-Chi Lin, Cheng-Hsun Wu, C. Lai, Jyun-Yu Zou, Chen-Yuan Shiau
This paper gives a brief summary of the design concept of the so-called “dual-mode” synthesized transmission lines with their applications to novel antenna arrays. The dual-mode synthesized line, by definition, is a miniaturized, nonperiodic basic building block capable of providing distinct circuit responses in different frequency bands of interest. The design methodology will be introduced briefly, followed by two application examples including the dual-mode retrodirective array and dual-band decoupling network. Prospective applications are discussed at the end of the paper.
{"title":"Dual-mode synthesized microstrip lines and their applications to innovative antenna arrays","authors":"T. Ma, Jyh-Woei Tsai, Kai-Chi Lin, Cheng-Hsun Wu, C. Lai, Jyun-Yu Zou, Chen-Yuan Shiau","doi":"10.1109/APCAP.2012.6333250","DOIUrl":"https://doi.org/10.1109/APCAP.2012.6333250","url":null,"abstract":"This paper gives a brief summary of the design concept of the so-called “dual-mode” synthesized transmission lines with their applications to novel antenna arrays. The dual-mode synthesized line, by definition, is a miniaturized, nonperiodic basic building block capable of providing distinct circuit responses in different frequency bands of interest. The design methodology will be introduced briefly, followed by two application examples including the dual-mode retrodirective array and dual-band decoupling network. Prospective applications are discussed at the end of the paper.","PeriodicalId":178493,"journal":{"name":"2012 IEEE Asia-Pacific Conference on Antennas and Propagation","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131911348","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 : 2012-10-18DOI: 10.1109/APCAP.2012.6333223
Sanming Hu, J. Cheong, Yuan Gao, M. C. K. Ho, M. Je, M. Madihian, S. Khait
This paper presents a 2.45-GHz wireless link to power on the miniaturized biomedical devices. In this link, a chip antenna is adopted for RF power transmitting, and a resonant network consisting of a compact inductor and a chip capacitor is employed for energy harvesting. A prototype is fabricated and measured in the time- and frequency-domain. The measured results show that this power transfer link meets the system requirement. In addition, in the case of a capacitor with 20% variation, this link can still achieve the system required efficiency. It therefore eliminates the adaptive matching circuit and simplifies the system design.
{"title":"A low-cost 2.45-GHz wireless power link for biomedical devices","authors":"Sanming Hu, J. Cheong, Yuan Gao, M. C. K. Ho, M. Je, M. Madihian, S. Khait","doi":"10.1109/APCAP.2012.6333223","DOIUrl":"https://doi.org/10.1109/APCAP.2012.6333223","url":null,"abstract":"This paper presents a 2.45-GHz wireless link to power on the miniaturized biomedical devices. In this link, a chip antenna is adopted for RF power transmitting, and a resonant network consisting of a compact inductor and a chip capacitor is employed for energy harvesting. A prototype is fabricated and measured in the time- and frequency-domain. The measured results show that this power transfer link meets the system requirement. In addition, in the case of a capacitor with 20% variation, this link can still achieve the system required efficiency. It therefore eliminates the adaptive matching circuit and simplifies the system design.","PeriodicalId":178493,"journal":{"name":"2012 IEEE Asia-Pacific Conference on Antennas and Propagation","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134426980","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 : 2012-10-18DOI: 10.1109/APCAP.2012.6333172
X. Wu, Y. Nechayev, C. Constantinou, P. Hall, A. Brizzi, A. Pellegrini, Y. Hao, C. Parini
Observability of 60 GHz wireless body area networks is being investigated, in the context of the maximum outdoor detection range for such a network. An off-body channel within a scattering environment has been characterized. By decomposing the detection channel into a free-space channel and a body-local environment channel, an observability estimation model is proposed based on the measured data.
{"title":"Preliminary estimate for observability of 60 GHz wireless body area networks","authors":"X. Wu, Y. Nechayev, C. Constantinou, P. Hall, A. Brizzi, A. Pellegrini, Y. Hao, C. Parini","doi":"10.1109/APCAP.2012.6333172","DOIUrl":"https://doi.org/10.1109/APCAP.2012.6333172","url":null,"abstract":"Observability of 60 GHz wireless body area networks is being investigated, in the context of the maximum outdoor detection range for such a network. An off-body channel within a scattering environment has been characterized. By decomposing the detection channel into a free-space channel and a body-local environment channel, an observability estimation model is proposed based on the measured data.","PeriodicalId":178493,"journal":{"name":"2012 IEEE Asia-Pacific Conference on Antennas and Propagation","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133252717","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 : 2012-10-18DOI: 10.1109/APCAP.2012.6333187
Wen‐Shan Chen, Jing-wei Wang
This article presents an LTE/WWAN antenna for mobile phone application. The low operation band from 690-1100 MHz is excited by two coupled-fed loops for applying at LTE700/GSM850/900 band. The high operation band from 1700-2690 MHz for GSM1800/1900/UMTS/LTE2300/2500 band is achieved by two monopoles and an inverted-C-shaped strip attached with the coupled-fed loop. A 33 nH chip inductor is inserted in a monopole for decreasing resonant length.
{"title":"An LTE/WWAN antenna contains monopole and coupled-fed loop for internal mobile phone","authors":"Wen‐Shan Chen, Jing-wei Wang","doi":"10.1109/APCAP.2012.6333187","DOIUrl":"https://doi.org/10.1109/APCAP.2012.6333187","url":null,"abstract":"This article presents an LTE/WWAN antenna for mobile phone application. The low operation band from 690-1100 MHz is excited by two coupled-fed loops for applying at LTE700/GSM850/900 band. The high operation band from 1700-2690 MHz for GSM1800/1900/UMTS/LTE2300/2500 band is achieved by two monopoles and an inverted-C-shaped strip attached with the coupled-fed loop. A 33 nH chip inductor is inserted in a monopole for decreasing resonant length.","PeriodicalId":178493,"journal":{"name":"2012 IEEE Asia-Pacific Conference on Antennas and Propagation","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133469282","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 : 2012-10-18DOI: 10.1109/APCAP.2012.6333257
S. Padhi, H. Hui
This paper presents a detail analysis of conical spiral antenna on dispersive soil for SKA radio telescope application. An accurate formulation for calculation of mutual coupling effects in conical spiral antenna is introduced. The effects of mutual coupling are characterized in terms of design parameter. The mutual coupling formulation can be extended to include the effects in array configurations.
{"title":"Characterizing mutual impedance of conical spiral antenna array for radio telescope application","authors":"S. Padhi, H. Hui","doi":"10.1109/APCAP.2012.6333257","DOIUrl":"https://doi.org/10.1109/APCAP.2012.6333257","url":null,"abstract":"This paper presents a detail analysis of conical spiral antenna on dispersive soil for SKA radio telescope application. An accurate formulation for calculation of mutual coupling effects in conical spiral antenna is introduced. The effects of mutual coupling are characterized in terms of design parameter. The mutual coupling formulation can be extended to include the effects in array configurations.","PeriodicalId":178493,"journal":{"name":"2012 IEEE Asia-Pacific Conference on Antennas and Propagation","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122155951","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：