Pub Date : 2003-10-15DOI: 10.1109/WCT.2003.1321597
A. Eldek, A. Elsherbeni, C.E. Smith
A bow-tie slot antenna fed by a coplanar waveguide is designed for wideband operation for radar applications. The new design exhibits 40 % bandwidth with center frequency around 11 GHz. One and two elements are designed analyzed and verification with measurements is presented.
{"title":"Wideband slot bow-tie antennas for radar applications","authors":"A. Eldek, A. Elsherbeni, C.E. Smith","doi":"10.1109/WCT.2003.1321597","DOIUrl":"https://doi.org/10.1109/WCT.2003.1321597","url":null,"abstract":"A bow-tie slot antenna fed by a coplanar waveguide is designed for wideband operation for radar applications. The new design exhibits 40 % bandwidth with center frequency around 11 GHz. One and two elements are designed analyzed and verification with measurements is presented.","PeriodicalId":6305,"journal":{"name":"2003 IEEE Topical Conference on Wireless Communication Technology","volume":"96 1","pages":"445-446"},"PeriodicalIF":0.0,"publicationDate":"2003-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80370629","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 : 2003-10-15DOI: 10.1109/WCT.2003.1321446
J. Kim, Wan Choi
Summary form only given. A decorrelating detector is a suboptimal multiuser detector that has attracted much attention due to its inherent merits (Zvonar, Z. and Brady, D., 1995). The decorrelating detector provides substantial performance gains over the conventional detector under various conditions. The multicarrier DS/CDMA system is regarded as a viable alternative to the classical single carrier DS/CDMA system in that an available bandwidth is decomposed into a set of subbands. In each subband, the fading has non-selectivity. That is, path diversity is converted to frequency diversity. A new multiuser detector combining decorrelating detector and multicarrier schemes is proposed and analyzed in a frequency-selective Rayleigh fading channel. From numerical results, it is shown that the proposed detector achieves better BER performance and lower computational complexity than the conventional decorrelating detector. It is also shown that the proposed detector is robust to partial narrowband interference.
只提供摘要形式。去相关检测器是一种次优多用户检测器，由于其固有的优点而引起了广泛的关注(Zvonar, Z. and Brady, D.， 1995)。在各种条件下，与传统检测器相比，去相关检测器提供了实质性的性能增益。多载波DS/CDMA系统是传统单载波DS/CDMA系统的可行替代方案，它将可用带宽分解为一组子带。在每个子带内，衰落具有非选择性。即路径分集转换为频率分集。提出了一种结合去相关检测器和多载波方案的多用户检测器，并对其在频率选择性瑞利衰落信道中的应用进行了分析。数值结果表明，与传统的去相关检测器相比，该检测器具有更好的误码率性能和更低的计算复杂度。实验还表明，该检测器对部分窄带干扰具有较强的鲁棒性。
{"title":"Multiuser detector combining multicarrier transmission and decorrelating detector in a Rayleigh fading channel","authors":"J. Kim, Wan Choi","doi":"10.1109/WCT.2003.1321446","DOIUrl":"https://doi.org/10.1109/WCT.2003.1321446","url":null,"abstract":"Summary form only given. A decorrelating detector is a suboptimal multiuser detector that has attracted much attention due to its inherent merits (Zvonar, Z. and Brady, D., 1995). The decorrelating detector provides substantial performance gains over the conventional detector under various conditions. The multicarrier DS/CDMA system is regarded as a viable alternative to the classical single carrier DS/CDMA system in that an available bandwidth is decomposed into a set of subbands. In each subband, the fading has non-selectivity. That is, path diversity is converted to frequency diversity. A new multiuser detector combining decorrelating detector and multicarrier schemes is proposed and analyzed in a frequency-selective Rayleigh fading channel. From numerical results, it is shown that the proposed detector achieves better BER performance and lower computational complexity than the conventional decorrelating detector. It is also shown that the proposed detector is robust to partial narrowband interference.","PeriodicalId":6305,"journal":{"name":"2003 IEEE Topical Conference on Wireless Communication Technology","volume":"32 1","pages":"105-106"},"PeriodicalIF":0.0,"publicationDate":"2003-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79031517","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 : 2003-10-15DOI: 10.1109/WCT.2003.1321557
S. Yamamoto, Nozoniii Hikono, J. Hirokawa, M. Ando
The authors propose a 120-degree beamwidth slot array antenna with a three-way power divider using post-wall waveguides installed on a single-layer substrate. The antenna is designed for base stations in 26 GHz-band fixed wireless access systems (FWA). It is easily manufactured at low cost for mass production by making via-holes and metal plating for the post-wall waveguides and etching for the slot array. In the vertical plane, a cosecant beam pattern is synthesized with null filling in order to get uniform illumination over the coverage area.
{"title":"A 120-degree beamwidth post-wall waveguide slot array with a three-way power divider on a single-layer dielectric substrate","authors":"S. Yamamoto, Nozoniii Hikono, J. Hirokawa, M. Ando","doi":"10.1109/WCT.2003.1321557","DOIUrl":"https://doi.org/10.1109/WCT.2003.1321557","url":null,"abstract":"The authors propose a 120-degree beamwidth slot array antenna with a three-way power divider using post-wall waveguides installed on a single-layer substrate. The antenna is designed for base stations in 26 GHz-band fixed wireless access systems (FWA). It is easily manufactured at low cost for mass production by making via-holes and metal plating for the post-wall waveguides and etching for the slot array. In the vertical plane, a cosecant beam pattern is synthesized with null filling in order to get uniform illumination over the coverage area.","PeriodicalId":6305,"journal":{"name":"2003 IEEE Topical Conference on Wireless Communication Technology","volume":"33 1","pages":"354-355"},"PeriodicalIF":0.0,"publicationDate":"2003-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81104831","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 : 2003-10-15DOI: 10.1109/WCT.2003.1321478
Y. Doi, Jun Kitakado, Tadayoshi Ito, T. Miyata, S. Nakao, T. Ohgane, Y. Ogawa
Summary form only given. Recently, many spatial signal processing technologies based on plural antennas and signal processing has been studied. It is well known that the technologies, i.e., adaptive array, space division multiple access (SDMA), and multi-input multi-output (MIMO) provide increasing communication quality, spectrum efficiency, and throughput. However, the technologies are not yet almost utilized for the actual product. In order to introduce the spatial signal processing technologies to real commercial products, we have studied and developed them. We consider that a mobile terminal has a limitation of performance of a processor and power consumption. Therefore, we have studied the technologies that do not require heavy performance for a mobile terminal. In this paper, we present results of our research and development: the adaptive array PHS base station, SDMA PHS test bed, MIMO PHS test bed, and adaptive array WLAN test bed. We have carried out field tests for the AA PHS BS in Tokyo. The results of the field test show that the AA PHS BS increases the system traffic by about 11% and reduces interference level as compared with the existing PHS BS. Results of the field test for the SDMA PHS test bed indicate that the SDMA test bed improves the traffic by about 2.4 to 2.7 times, and can coexist with the existing PHS BS. Results of the indoor test for the MIMO PHS test bed indicate that the test bed establishes two stable paths if the MIMO BS antenna distance is larger than 1.0 /spl lambda/ and the MIMO terminal antenna distance is larger than 0.3 /spl lambda/. We also have developed an adaptive array test bed for the wireless LAN, i.e., IEEE 802.11b. Results of the field test show that the AA-WLAN test bed expands communication distance by 1.9 times, and increases average throughput.
{"title":"Realized case of smart antenna in mobile communication systems","authors":"Y. Doi, Jun Kitakado, Tadayoshi Ito, T. Miyata, S. Nakao, T. Ohgane, Y. Ogawa","doi":"10.1109/WCT.2003.1321478","DOIUrl":"https://doi.org/10.1109/WCT.2003.1321478","url":null,"abstract":"Summary form only given. Recently, many spatial signal processing technologies based on plural antennas and signal processing has been studied. It is well known that the technologies, i.e., adaptive array, space division multiple access (SDMA), and multi-input multi-output (MIMO) provide increasing communication quality, spectrum efficiency, and throughput. However, the technologies are not yet almost utilized for the actual product. In order to introduce the spatial signal processing technologies to real commercial products, we have studied and developed them. We consider that a mobile terminal has a limitation of performance of a processor and power consumption. Therefore, we have studied the technologies that do not require heavy performance for a mobile terminal. In this paper, we present results of our research and development: the adaptive array PHS base station, SDMA PHS test bed, MIMO PHS test bed, and adaptive array WLAN test bed. We have carried out field tests for the AA PHS BS in Tokyo. The results of the field test show that the AA PHS BS increases the system traffic by about 11% and reduces interference level as compared with the existing PHS BS. Results of the field test for the SDMA PHS test bed indicate that the SDMA test bed improves the traffic by about 2.4 to 2.7 times, and can coexist with the existing PHS BS. Results of the indoor test for the MIMO PHS test bed indicate that the test bed establishes two stable paths if the MIMO BS antenna distance is larger than 1.0 /spl lambda/ and the MIMO terminal antenna distance is larger than 0.3 /spl lambda/. We also have developed an adaptive array test bed for the wireless LAN, i.e., IEEE 802.11b. Results of the field test show that the AA-WLAN test bed expands communication distance by 1.9 times, and increases average throughput.","PeriodicalId":6305,"journal":{"name":"2003 IEEE Topical Conference on Wireless Communication Technology","volume":"68 1","pages":"180-"},"PeriodicalIF":0.0,"publicationDate":"2003-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82345274","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 : 2003-10-15DOI: 10.1109/WCT.2003.1321418
C. Hewes
Summary form only given. Wireless communications technology has gone through very rapid evolution in recent years. Perhaps the most dramatic change is seen is chip sets for cellular phones. In just a few years, the silicon die area to support a GSM cellular digital base band function has shrunk by a factor of 19 which, along with silicon wafer size increase, has resulted in a 60-fold increase in the number of silicon die per wafer. The chip set solutions for cellular phones have changed from several chips and hundreds of external passive components to just three chips and about 50 external components for a GSM GPRS device today. A single chip implementation of GPRS is expected soon. Besides the current state of the art in SOC, two R&D projects at Texas Instruments illustrate the scope and nature of the R&D work for future wireless communications: multi-antenna MIMO (multi-input, multi output) system for future wireless LANs and a UWB (ultra wide band) effort.
{"title":"SOC technology for future wireless communications","authors":"C. Hewes","doi":"10.1109/WCT.2003.1321418","DOIUrl":"https://doi.org/10.1109/WCT.2003.1321418","url":null,"abstract":"Summary form only given. Wireless communications technology has gone through very rapid evolution in recent years. Perhaps the most dramatic change is seen is chip sets for cellular phones. In just a few years, the silicon die area to support a GSM cellular digital base band function has shrunk by a factor of 19 which, along with silicon wafer size increase, has resulted in a 60-fold increase in the number of silicon die per wafer. The chip set solutions for cellular phones have changed from several chips and hundreds of external passive components to just three chips and about 50 external components for a GSM GPRS device today. A single chip implementation of GPRS is expected soon. Besides the current state of the art in SOC, two R&D projects at Texas Instruments illustrate the scope and nature of the R&D work for future wireless communications: multi-antenna MIMO (multi-input, multi output) system for future wireless LANs and a UWB (ultra wide band) effort.","PeriodicalId":6305,"journal":{"name":"2003 IEEE Topical Conference on Wireless Communication Technology","volume":"19 1","pages":"7-"},"PeriodicalIF":0.0,"publicationDate":"2003-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89386291","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 : 2003-10-15DOI: 10.1109/WCT.2003.1321535
Y. Shoji, K. Hamaguchi, H. Ogawa, A. Akeyama, Y. Shiraki, K. Yoshida, T. Hirose, H. Shimawaki, K. Sakamoto
We present an overview of the millimeter-wave ad-hoc wireless access systems that we are developing. These systems have the advantages of easy connectivity, network flexibility, and high-speed data transmission using a wide frequency bandwidth. This paper describes the concept of the system, and the hardware design.
{"title":"Millimeter-wave ad-hoc wireless access system. (1) System overview","authors":"Y. Shoji, K. Hamaguchi, H. Ogawa, A. Akeyama, Y. Shiraki, K. Yoshida, T. Hirose, H. Shimawaki, K. Sakamoto","doi":"10.1109/WCT.2003.1321535","DOIUrl":"https://doi.org/10.1109/WCT.2003.1321535","url":null,"abstract":"We present an overview of the millimeter-wave ad-hoc wireless access systems that we are developing. These systems have the advantages of easy connectivity, network flexibility, and high-speed data transmission using a wide frequency bandwidth. This paper describes the concept of the system, and the hardware design.","PeriodicalId":6305,"journal":{"name":"2003 IEEE Topical Conference on Wireless Communication Technology","volume":"23 1","pages":"308-309"},"PeriodicalIF":0.0,"publicationDate":"2003-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87610200","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 : 2003-10-15DOI: 10.1109/WCT.2003.1321603
Jeong-Heon Lee, Tae-Jin Lee
Summary form only given. We adopt a general Gaussian function shifted in time by 0.5 ns and truncated at /spl plusmn/0.25 ns and its derivatives for a UWB waveform and its shaping, and employ a TH-SS (time hopping spread spectrum) technique. Three types of typical data modulation schemes - PPM, BPSK and BPAM - are used. It is important to choose an appropriate modulation scheme that has a smooth spectrum reducing the spectral lines to result in maximum power efficiency because of possible limits on the UWB transmit power emission level for wireless network applications. The adopted UWB systems are designed to consume extremely low AC power. We describe some UWB features which attract many battery operated mobile applications such as WPANs. The UWB signal can be seen as random noise to the IEEE 802.11 WLAN signal, whose bandwidth is 22 MHz. The bandwidth of the WLAN interference signal is only a small fraction of the UWB signal bandwidth, which means that the UWB system has robust noise performance. The transmitted average power of the UWB signal is extremely low. Therefore, the WLAN and WPAN systems can coexist in the same 2.4 GHz ISM band.
{"title":"Design issues of ultra-wideband systems for high-rate wireless PANs: modulation schemes and coexistence with WLANs","authors":"Jeong-Heon Lee, Tae-Jin Lee","doi":"10.1109/WCT.2003.1321603","DOIUrl":"https://doi.org/10.1109/WCT.2003.1321603","url":null,"abstract":"Summary form only given. We adopt a general Gaussian function shifted in time by 0.5 ns and truncated at /spl plusmn/0.25 ns and its derivatives for a UWB waveform and its shaping, and employ a TH-SS (time hopping spread spectrum) technique. Three types of typical data modulation schemes - PPM, BPSK and BPAM - are used. It is important to choose an appropriate modulation scheme that has a smooth spectrum reducing the spectral lines to result in maximum power efficiency because of possible limits on the UWB transmit power emission level for wireless network applications. The adopted UWB systems are designed to consume extremely low AC power. We describe some UWB features which attract many battery operated mobile applications such as WPANs. The UWB signal can be seen as random noise to the IEEE 802.11 WLAN signal, whose bandwidth is 22 MHz. The bandwidth of the WLAN interference signal is only a small fraction of the UWB signal bandwidth, which means that the UWB system has robust noise performance. The transmitted average power of the UWB signal is extremely low. Therefore, the WLAN and WPAN systems can coexist in the same 2.4 GHz ISM band.","PeriodicalId":6305,"journal":{"name":"2003 IEEE Topical Conference on Wireless Communication Technology","volume":"9 1","pages":"459-460"},"PeriodicalIF":0.0,"publicationDate":"2003-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86220076","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 : 2003-10-15DOI: 10.1109/WCT.2003.1321464
R. Usaha, M. Ali
Recently there has been much interest in slot antennas for microwave and millimeter wave applications. CPW-fed slots are one of the most popular kinds of antennas since they can be easily integrated with microwave integrated circuits (MICs) and monolithic microwave integrated circuits (MMICs) (Tsai, H.S. and York, R.A., 1996). Slot antennas have bidirectional radiation patterns. Unidirectional patterns can be achieved with the use of a reflector. This includes the cavity-backed slot design (Yeganeh, S.H. and Birtcher, C., 1993) or slot antennas on PBG (photonic bandgap) substrates (Yang, F. et al., 2000). It has been demonstrated that folded slot antennas have input impedances that can be easily matched with conventional transmission lines (Tsai and York). We present two types of modified folded slot antennas (MFSAs) which provide impedance bandwidths of 44% and 80% respectively within a VSWR of 2:1.
近年来，人们对用于微波和毫米波应用的缝隙天线产生了浓厚的兴趣。cpw馈电槽是最受欢迎的天线类型之一，因为它们可以很容易地与微波集成电路(mic)和单片微波集成电路(mmic)集成(Tsai, H.S.和York, r.a.， 1996)。槽天线具有双向辐射模式。使用反射器可以实现单向图案。这包括腔背槽设计(Yeganeh, S.H.和Birtcher, C, 1993)或PBG(光子带隙)基板上的槽天线(Yang, F. et al.， 2000)。已经证明，折叠槽天线的输入阻抗可以很容易地与传统传输线匹配(Tsai和York)。我们提出了两种改进的折叠槽天线(MFSAs)，它们在2:1的驻波比下分别提供44%和80%的阻抗带宽。
{"title":"Design of broadband modified folded slot antennas for C-band wireless applications","authors":"R. Usaha, M. Ali","doi":"10.1109/WCT.2003.1321464","DOIUrl":"https://doi.org/10.1109/WCT.2003.1321464","url":null,"abstract":"Recently there has been much interest in slot antennas for microwave and millimeter wave applications. CPW-fed slots are one of the most popular kinds of antennas since they can be easily integrated with microwave integrated circuits (MICs) and monolithic microwave integrated circuits (MMICs) (Tsai, H.S. and York, R.A., 1996). Slot antennas have bidirectional radiation patterns. Unidirectional patterns can be achieved with the use of a reflector. This includes the cavity-backed slot design (Yeganeh, S.H. and Birtcher, C., 1993) or slot antennas on PBG (photonic bandgap) substrates (Yang, F. et al., 2000). It has been demonstrated that folded slot antennas have input impedances that can be easily matched with conventional transmission lines (Tsai and York). We present two types of modified folded slot antennas (MFSAs) which provide impedance bandwidths of 44% and 80% respectively within a VSWR of 2:1.","PeriodicalId":6305,"journal":{"name":"2003 IEEE Topical Conference on Wireless Communication Technology","volume":"109 1","pages":"150-151"},"PeriodicalIF":0.0,"publicationDate":"2003-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78403869","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 : 2003-10-15DOI: 10.1109/WCT.2003.1321519
M. Iskander, R. Isom, T. Heffner, Z. Yun, W. Milroy
Continuous transverse stub (CTS) is an antenna technology that offers greater tunable bandwidth than waveguide or patch antennas, efficiencies of over 60% and polarization isolation of 25-50 dB. This technology is also low cost, relatively insensitive to fabrication tolerance, and when combined with the ferroelectric material technology, it provides beam steering capability. For wireless communications applications, omnidirectional radiation patterns and improved feeding arrangements may also be required to further simplify the design and improve the impedance matching characteristics. To this end, we recently designed a coaxial version of the CTS technology, and experimentally verified its radiation and impedance characteristics.
{"title":"Design of a multi-band antenna array using CTS and photonic band gap technologies","authors":"M. Iskander, R. Isom, T. Heffner, Z. Yun, W. Milroy","doi":"10.1109/WCT.2003.1321519","DOIUrl":"https://doi.org/10.1109/WCT.2003.1321519","url":null,"abstract":"Continuous transverse stub (CTS) is an antenna technology that offers greater tunable bandwidth than waveguide or patch antennas, efficiencies of over 60% and polarization isolation of 25-50 dB. This technology is also low cost, relatively insensitive to fabrication tolerance, and when combined with the ferroelectric material technology, it provides beam steering capability. For wireless communications applications, omnidirectional radiation patterns and improved feeding arrangements may also be required to further simplify the design and improve the impedance matching characteristics. To this end, we recently designed a coaxial version of the CTS technology, and experimentally verified its radiation and impedance characteristics.","PeriodicalId":6305,"journal":{"name":"2003 IEEE Topical Conference on Wireless Communication Technology","volume":"39 1","pages":"269-270"},"PeriodicalIF":0.0,"publicationDate":"2003-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89656218","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 : 2003-10-15DOI: 10.1109/WCT.2003.1321486
T. Fujino, A. Hirata, T. Shiozawa
We evaluated the induced SAR in an inhomogeneous model of the human body for exposure to EM waves from a dipole antenna at 400 MHz. In particular, we compared the results for the homogeneous and inhomogeneous models. For the main result, a large difference in the SAR distributions was observed. Additionally, the peak SAR averaged over 1g or 10g of tissue obtained in the homogeneous model are overestimated as compared with those in the inhomogeneous model, only when the antenna-model distance is small.
{"title":"Evaluation of induced SAR in the human body due to EM waves emitted from a dipole antenna at 400 MHz band","authors":"T. Fujino, A. Hirata, T. Shiozawa","doi":"10.1109/WCT.2003.1321486","DOIUrl":"https://doi.org/10.1109/WCT.2003.1321486","url":null,"abstract":"We evaluated the induced SAR in an inhomogeneous model of the human body for exposure to EM waves from a dipole antenna at 400 MHz. In particular, we compared the results for the homogeneous and inhomogeneous models. For the main result, a large difference in the SAR distributions was observed. Additionally, the peak SAR averaged over 1g or 10g of tissue obtained in the homogeneous model are overestimated as compared with those in the inhomogeneous model, only when the antenna-model distance is small.","PeriodicalId":6305,"journal":{"name":"2003 IEEE Topical Conference on Wireless Communication Technology","volume":"5 1","pages":"194-195"},"PeriodicalIF":0.0,"publicationDate":"2003-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79185265","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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