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Hybrid Supply Modulator for High Power RF PA with Non-Inverting Amplifier 带非反相放大器的大功率射频PA混合电源调制器
2019 IEEE Conference on Antenna Measurements & Applications (CAMA) Pub Date : 2019-10-01 DOI: 10.1109/CAMA47423.2019.8959724
K. H. Ha, Il Ho Jung, H. Kang, J. Lee, Yu Min Kim, C. Cho
{"title":"Hybrid Supply Modulator for High Power RF PA with Non-Inverting Amplifier","authors":"K. H. Ha, Il Ho Jung, H. Kang, J. Lee, Yu Min Kim, C. Cho","doi":"10.1109/CAMA47423.2019.8959724","DOIUrl":"https://doi.org/10.1109/CAMA47423.2019.8959724","url":null,"abstract":"In this paper, we design a Hybrid Supply Modulator (HSM) based on Non-Inverting Amplifier for High Power Amplifier (HPA) operating in C-band. Compared with the conventional HSM, the Switching stage and the R-sense stage are eliminated to prevent the power consumption, and the Non-Inverting Amplifier is applied to the linear stage. The proposed HSM consists of and Envelope Detector, Non-Inverting Amplifier and Push-Pull stage. By eliminating the Switching stage, the power consumed by the R-sense is prevented and the bias power consumption is reduced while maintaining the power modulation performance by applying the Non-Inverting Amplifier. The HSM achieved 45.9 dBm (39.8W) of output power and 93% efficiency at a supply voltage of 50V.","PeriodicalId":170627,"journal":{"name":"2019 IEEE Conference on Antenna Measurements & Applications (CAMA)","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128176209","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}
引用次数: 0
Six-Port Technology for Millimeter-Wave Metrology 毫米波测量的六端口技术
2019 IEEE Conference on Antenna Measurements & Applications (CAMA) Pub Date : 2019-10-01 DOI: 10.1109/CAMA47423.2019.8959806
K. Haddadi, C. Loyez, K. Ziouche
{"title":"Six-Port Technology for Millimeter-Wave Metrology","authors":"K. Haddadi, C. Loyez, K. Ziouche","doi":"10.1109/CAMA47423.2019.8959806","DOIUrl":"https://doi.org/10.1109/CAMA47423.2019.8959806","url":null,"abstract":"The six-port measurement technique has played a major role in vector network analysis metrology, particularly within the community of national standards laboratories. Thanks to reduced hardware resource in contrast with conventional and well-established down-mixing heterodyne technique, this paper addresses the six-port technology for amplitude and phase measurements of millimeter-wave signals in the V band. In particular, guided, planar and monolithic IQ six-port demodulators are considered. Advantages and drawbacks of each solution are highlighted to provide a guide to address sensing applications.","PeriodicalId":170627,"journal":{"name":"2019 IEEE Conference on Antenna Measurements & Applications (CAMA)","volume":"159 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133184103","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}
引用次数: 1
Study on Radiation Characteristics of QRHA Based on Gaussian Ridge Profile 基于高斯脊剖面的QRHA辐射特性研究
2019 IEEE Conference on Antenna Measurements & Applications (CAMA) Pub Date : 2019-10-01 DOI: 10.1109/CAMA47423.2019.8959692
F. Oktafiani, Effrina Yanti Hamid, A. Munir
{"title":"Study on Radiation Characteristics of QRHA Based on Gaussian Ridge Profile","authors":"F. Oktafiani, Effrina Yanti Hamid, A. Munir","doi":"10.1109/CAMA47423.2019.8959692","DOIUrl":"https://doi.org/10.1109/CAMA47423.2019.8959692","url":null,"abstract":"The study on radiation characteristics of quad-ridged horn antenna (QRHA) by altering the ridge profile is presented. The evaluation of ridge profile is carried out based on the Gaussian function. The characterization is performed by varying variables in the function, namely gap between the ridge profiles, width of the horn aperture, length of the antenna horn, and maximum factor of the Gaussian function. The beamwidth and sidelobe level are the observed terms to represent the performance of proposed QRHA. It is found that the parameters significantly influence the performance of QRHA are width of the horn aperture and maximum of the Gaussian function. It can be inferred that the narrower antenna beamwidth is obtained in accordance with increasing both of parameters. While in term of sidelobe level, the optimum performances are achieved by reducing aperture of the horn and maximum of the Gaussian function.","PeriodicalId":170627,"journal":{"name":"2019 IEEE Conference on Antenna Measurements & Applications (CAMA)","volume":"112 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129090842","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}
引用次数: 1
Frequency Reconfigurable Wideband Metamaterial Antenna Design with CSRR 基于CSRR的频率可重构宽带超材料天线设计
2019 IEEE Conference on Antenna Measurements & Applications (CAMA) Pub Date : 2019-10-01 DOI: 10.1109/CAMA47423.2019.8959721
A. Y. Iliyasu, Mohamad Rijal Bin Hamid, M. Rahim, Murtala Aminu-Baba, Mohd Fairus Bin Mohd
{"title":"Frequency Reconfigurable Wideband Metamaterial Antenna Design with CSRR","authors":"A. Y. Iliyasu, Mohamad Rijal Bin Hamid, M. Rahim, Murtala Aminu-Baba, Mohd Fairus Bin Mohd","doi":"10.1109/CAMA47423.2019.8959721","DOIUrl":"https://doi.org/10.1109/CAMA47423.2019.8959721","url":null,"abstract":"This work presents the design of wideband metamaterial MTM antenna loaded with frequency reconfiguration capability. The bandwidth enhancement is based on locating best point of the horizontal slot through parametric studies within the length L3. This horizontal slot is responsible for left-handed capacitor C L to improve bandwidth. Employing CSRR generate negative permittivity which result further bandwidth enhancement at lower and upper band with better matching condition. Two Pin Diode switch reconfigured the antenna from wideband antenna to dual-band antenna. Computer Simulation Technology (CST) Software was used for simulation to determine the accuracy of the technique and it operation. Wideband with bandwidth range (2.3-5.6) GHz was obtained. This wideband is reconfigured to dual band at 2.0 GHz and 5.2 GHz were obtained. Highest peak gain obtained in H-plane are 2.75dBi and 3.24dBi at 2.4 GHz and 5.2 GHz respectively. Based on the results obtained, the antenna can be used for GSM band, lower 5G band and WLAN applications band.","PeriodicalId":170627,"journal":{"name":"2019 IEEE Conference on Antenna Measurements & Applications (CAMA)","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121607343","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}
引用次数: 1
Printed IFA for WLAN/5G USB Dongle Applications 用于WLAN/5G USB加密狗应用的打印IFA
2019 IEEE Conference on Antenna Measurements & Applications (CAMA) Pub Date : 2019-10-01 DOI: 10.1109/CAMA47423.2019.8959593
Pin-Feng Chen, Wen-Zhong Lee, Wen‐Shan Chen, Yung-Chun Lin
{"title":"Printed IFA for WLAN/5G USB Dongle Applications","authors":"Pin-Feng Chen, Wen-Zhong Lee, Wen‐Shan Chen, Yung-Chun Lin","doi":"10.1109/CAMA47423.2019.8959593","DOIUrl":"https://doi.org/10.1109/CAMA47423.2019.8959593","url":null,"abstract":"A design of printed IFA (Inverted-F Antenna) for WLAN/5G C-band application is proposed. The antenna is printed on the two sides of the FR4 substrate, and the antenna parts on the two sides are connected by via. The antenna consists of 3-arms on the front and back sides of the substrate. The 3-arms of IFA can resonate some modes to match the required bands for applications. From the results of the antenna, it can be applied to the operating bands covering WLAN 2.4GHz/ 5.2GHz/ 5.8GHz bands and 5G C-Band (3.4–3.6 GHz) applications.","PeriodicalId":170627,"journal":{"name":"2019 IEEE Conference on Antenna Measurements & Applications (CAMA)","volume":"173 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121796886","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}
引用次数: 0
Recent Development in UAV-based Antenna Pattern Characterization for Weather Radars 基于无人机的气象雷达天线方向图表征研究进展
2019 IEEE Conference on Antenna Measurements & Applications (CAMA) Pub Date : 2019-10-01 DOI: 10.1109/CAMA47423.2019.8959698
Arturo Y. Umeyama, J. Salazar-Cerreno, B. Wolf, C. Fulton
{"title":"Recent Development in UAV-based Antenna Pattern Characterization for Weather Radars","authors":"Arturo Y. Umeyama, J. Salazar-Cerreno, B. Wolf, C. Fulton","doi":"10.1109/CAMA47423.2019.8959698","DOIUrl":"https://doi.org/10.1109/CAMA47423.2019.8959698","url":null,"abstract":"The evaluation and testing of the radiation characteristics of antennas are performed in antenna ranges, and in this context, in-situ measurements provide a means to verify the performance of the antenna such that its intrinsic radiation patterns are not substantially modified by its operational environment. Conventional outdoor range facilities are limited by space and cost constraints, and it would be impractical to develop such facilities for a single radar, let alone a network with a large number of radars. Continuing advances and the availability of relatively inexpensive commercially-off-the-shelf unmanned aerial vehicle systems allow the development of insitu antenna measurement systems for a wide variety of operating frequencies. Such unmanned aerial vehicle-based antenna ranges are important for polarimetric radars, and in particular for polarimetric calibration since a complete control of the measuring instrument is possible. This paper presents an update of the current in-situ antenna characterization and calibration of a radar system using an unmanned aerial vehicle developed by the Advanced Radar Research Center at The University of Oklahoma.","PeriodicalId":170627,"journal":{"name":"2019 IEEE Conference on Antenna Measurements & Applications (CAMA)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115295471","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}
引用次数: 4
Analysis on the Parameter Estimation Performance in an UWB/IMU Tightly-Coupled System UWB/IMU紧密耦合系统参数估计性能分析
2019 IEEE Conference on Antenna Measurements & Applications (CAMA) Pub Date : 2019-10-01 DOI: 10.1109/CAMA47423.2019.8959807
Kegen Yu, Kai Wen, Yingbing Li
{"title":"Analysis on the Parameter Estimation Performance in an UWB/IMU Tightly-Coupled System","authors":"Kegen Yu, Kai Wen, Yingbing Li","doi":"10.1109/CAMA47423.2019.8959807","DOIUrl":"https://doi.org/10.1109/CAMA47423.2019.8959807","url":null,"abstract":"Combining ultra-wideband (UWB) and low-cost inertial measurement unit (IMU) by a tight coupling fashion is an effective way to provide an integrated indoor localization system with high accuracy and continuity. However, the performance of such an integrated system may be poor in the presence of undesirable geometry between an UWB target node and a number of UWB anchors. In addition, some parameters in the state vector of Kalman filter (used for data fusion) are unobservable from UWB ranges. These problems have not been discussed in detail in the literature related to UWB localization. In this paper, we analyze the performance of integrated localization under different geometries between the UWB node and anchors based on Fisher information matrix. Also, the parameter observability with respect to UWB ranges is analyzed.","PeriodicalId":170627,"journal":{"name":"2019 IEEE Conference on Antenna Measurements & Applications (CAMA)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117260974","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}
引用次数: 0
Characterization of X-Band Wave Absorber Made of SRR-Based Metasurface 基于srr的超表面x波段吸波器的表征
2019 IEEE Conference on Antenna Measurements & Applications (CAMA) Pub Date : 2019-10-01 DOI: 10.1109/CAMA47423.2019.8959749
Budi Syihabuddin, M. R. Effendi, A. Munir
{"title":"Characterization of X-Band Wave Absorber Made of SRR-Based Metasurface","authors":"Budi Syihabuddin, M. R. Effendi, A. Munir","doi":"10.1109/CAMA47423.2019.8959749","DOIUrl":"https://doi.org/10.1109/CAMA47423.2019.8959749","url":null,"abstract":"Researches on electromagnetics wave absorber implemented with common pattern structures have been explored for many applications. One of fundamental issues is its insufficiency in the performance, particularly bandwidth response and absorption characteristic. This paper presents the characterization of X-band wave absorber made of metasurface based on split-ring resonator (SRR). The utilization of SRR-based metasurface in the development of X-band wave absorber is intended to enhance its bandwidth response and absorption characteristic. The structure of X-band wave absorber is designed using a unit cell of metasurface composed of an SRR and a narrow thin strip implemented on different layers of 0.8 mm thick FR4 epoxy dielectric substrate. By taking the unit cell dimension of 3.80 mm × 3.80 mm, the characterization of proposed X-band wave absorber is performed. The characterization result shows that the separation of SRR in a unit cell holds an important role in achieving the desired performance of X-band wave absorber.","PeriodicalId":170627,"journal":{"name":"2019 IEEE Conference on Antenna Measurements & Applications (CAMA)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116135540","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}
引用次数: 3
Numerical Design of Dual Resonant Microstrip Surface RF Coil for MRI Application 磁共振成像用双谐振微带表面射频线圈的数值设计
2019 IEEE Conference on Antenna Measurements & Applications (CAMA) Pub Date : 2019-10-01 DOI: 10.1109/CAMA47423.2019.8959540
Adhi Mahendra, Basari, E. Rahardjo
{"title":"Numerical Design of Dual Resonant Microstrip Surface RF Coil for MRI Application","authors":"Adhi Mahendra, Basari, E. Rahardjo","doi":"10.1109/CAMA47423.2019.8959540","DOIUrl":"https://doi.org/10.1109/CAMA47423.2019.8959540","url":null,"abstract":"Magnetic resonance imaging (MRI) has three main components, namely the main magnet, gradient coil, and RF coil. RF coils play an important role as recipients of RF signals from the emission of magnetic resonance and RF excitation into atomic nuclei of the human body. In this paper, we propose a design of dual resonant microstrip RF coil that operates at 1.5 T and 3 T MRI. The proposed coil is simple structure for surface RF coil and capable of working at frequencies of 63.8 MHz and 127.6 MHz. The simulation results show that the reflection coefficient (S11) is less than −10 dB either without or with the human phantom model at both operating frequencies. As for magnetic field distribution, the field is more homogeneous at the lower operating frequency compared to the higher one. The computed peak specific absorption rate (SAR) is obtained by about 0.56 W/kg and 0.91 W/kg at 63.8 MHz and 127.6 MHz, respectively.","PeriodicalId":170627,"journal":{"name":"2019 IEEE Conference on Antenna Measurements & Applications (CAMA)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121304190","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}
引用次数: 2
Practical Aspects of Antenna Element on Air Substrate Usage 天线元件在空气基板上的实际应用
2019 IEEE Conference on Antenna Measurements & Applications (CAMA) Pub Date : 2019-10-01 DOI: 10.1109/CAMA47423.2019.8959599
A. Kukharenko, R. V. Shaymardanov, A. Yelizarov
{"title":"Practical Aspects of Antenna Element on Air Substrate Usage","authors":"A. Kukharenko, R. V. Shaymardanov, A. Yelizarov","doi":"10.1109/CAMA47423.2019.8959599","DOIUrl":"https://doi.org/10.1109/CAMA47423.2019.8959599","url":null,"abstract":"Construction of antenna element on air substrate is presented. Advantages of such an antenna type usage are described. Practical designs on air-substrate antenna elements for GNSS and LNSS application are shown. Antenna elements characteristics and parameters measurements are presented. Practical designs of antenna modules which use air-substrate antenna elements for L and S bands are shown.","PeriodicalId":170627,"journal":{"name":"2019 IEEE Conference on Antenna Measurements & Applications (CAMA)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128522110","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}
引用次数: 0
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