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Fractal microstrip antenna with Minkowski Island split ring resonator for broadband application 宽带分形微带闵可夫斯基岛分环谐振器天线
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 2013-12-01 DOI: 10.1109/RFM.2013.6757252
B. Ahmad, H. Nornikman
{"title":"Fractal microstrip antenna with Minkowski Island split ring resonator for broadband application","authors":"B. Ahmad, H. Nornikman","doi":"10.1109/RFM.2013.6757252","DOIUrl":"https://doi.org/10.1109/RFM.2013.6757252","url":null,"abstract":"A fractal microstrip antenna with Minkowski Island split ring resonator (MI-SRR) is proposed in this paper. Four minis MI-SRR structure had been connected to the corner of the main Minkowski Island Fractal to improve the bandwidth of the antenna. This antenna radiates at the broadband range from 2.09 GHz to 3.64 GHz with a bandwidth of 1.55 GHz. The first resonant frequencies for this antenna are at 2.292 GHz with - 14.515 dB of return loss while the second resonant frequency is at 3.428 GHz with - 28.585 dB. Design A and Design B have compared its return loss, resonant frequency, gain and bandwidth performance with the previous Minkowski Island antenna. The simulation work in CST Microwave Studio simulation software also had been compared with the measured fractal microstrip antenna.","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131374888","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: 22
Stepped impedance dual mode coaxial filter 阶跃阻抗双模同轴滤波器
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 2013-12-01 DOI: 10.1109/RFM.2013.6757240
C. Sovuthy, W. P. Wen
{"title":"Stepped impedance dual mode coaxial filter","authors":"C. Sovuthy, W. P. Wen","doi":"10.1109/RFM.2013.6757240","DOIUrl":"https://doi.org/10.1109/RFM.2013.6757240","url":null,"abstract":"Among the most important specifications for microwave filters are selectivity, bandwidth, passband insertion loss and physical size. To design a narrowband filter, the unloaded Q-factor of the resonator must be increased if we are to maintain a fixed passband insertion loss. However the Q-factor is proportional to volume of a microwave resonator filter. Thus, a highly selective, narrowband, and low loss filter will require a significant physical volume. This paper presents a novel cavity design of a stepped-impedance dual-mode coaxial microwave filter based on TEM mode of propagation. A brief theory together with design procedures is shown. In contrast to conventional combline based single mode filter, the proposed filter will be proven to be able to exhibit two resonances per unit structure. Therefore, the number of the resonators required is reduced to half. The simulated result clearly shows two resonances in the passband for one physical structure, hence producing dual-mode response. This filter is a suitable candidate for compact base station where the small and compact size of filter is highly concerned.","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"106 Pt B 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133708212","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
Switchable beam antenna 可切换波束天线
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 2013-12-01 DOI: 10.1109/RFM.2013.6757224
Lim Wai Leong, L. Y. Seng, W. F. Hoon, M. Malek
{"title":"Switchable beam antenna","authors":"Lim Wai Leong, L. Y. Seng, W. F. Hoon, M. Malek","doi":"10.1109/RFM.2013.6757224","DOIUrl":"https://doi.org/10.1109/RFM.2013.6757224","url":null,"abstract":"This paper introduces the Switchable Beam antenna which has the ability to shift the direction of the Wi-Fi signal to any specific direction depending on the availability of user. The designs of eight radiating patches are installed in between aluminum plates which are fixed by the edges of the other aluminum plate. This is to represent eight angles where the antenna will radiate. By using switches, the beam of the radiating energy can be adjusted to be directed to a specific area. This antenna is operational at 5.8 GHz which is Wi-Fi frequency. The antenna generated a gain of 4.07 dB while the directivity is 9.986 dBi. Apart from Wi-Fi applications, the design can be customized in different frequency to support different application such as GSM.","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"225 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121270183","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
A compact Peano-type fractal based printed slot antenna for dual-band wireless applications 用于双频无线应用的紧凑型皮诺型分形印刷槽天线
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 2013-12-01 DOI: 10.1109/RFM.2013.6757278
S. F. Abdulkarim, A. Salim, J. Ali, A. Hammoodi, M. Yassen, M. R. Hassan
{"title":"A compact Peano-type fractal based printed slot antenna for dual-band wireless applications","authors":"S. F. Abdulkarim, A. Salim, J. Ali, A. Hammoodi, M. Yassen, M. R. Hassan","doi":"10.1109/RFM.2013.6757278","DOIUrl":"https://doi.org/10.1109/RFM.2013.6757278","url":null,"abstract":"This paper presents the design of a new Co-Planar Waveguide (CPW) fed dual band printed slot antenna with enhanced bandwidths for use in wireless applications. The fractal based slot structure of the proposed antenna is in the form of Peano fractal curve of the second iteration as being applied to the two sides of a rectangular slot. The proposed antenna is to be etched using a substrate with relative permittivity of 4.4 and thickness of 1.6 mm. The resulting antenna has overall dimensions of 36 mm × 45 mm which is suitable for mobile terminal applications. Modeling and performance evaluation of the proposed antenna have been carried out using the CST Microwave Studio. Simulation results shows that the proposed antenna offers dual -10 dB impedance bandwidths of more than 1.2 GHz and 1.4 GHz for the lower and the upper bands respectively with corresponding average gains of about 2.5 dBi and 4 dBi throughout these bands. The first resonant band, centered at 2.50 GHz, extends from 1.91 to 3.11 GHz. This band covers the 2.4 GHz WLAN band (2.4-2.483 GHz) and the 2.5 GHz mobile WiMAX operating band (2.5-2.7 GHz), while the second resonant band, centered at 5.20 GHz; extends from 4.51 to 5.91 GHz. This band covers the U-NII mid-band (5.47-5.725 GHz) and U-NII high-band (5.725-5.875 GHz). Besides the compact size, the antenna offers reasonable radiation characteristics with omnidirectional radiation patterns in the two bands.","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124014507","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: 30
Quantification of power amplifiers' static and dynamic distortions using frequency domain metrics 用频域指标量化功率放大器的静态和动态畸变
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 2013-12-01 DOI: 10.1109/RFM.2013.6757268
O. Hammi
{"title":"Quantification of power amplifiers' static and dynamic distortions using frequency domain metrics","authors":"O. Hammi","doi":"10.1109/RFM.2013.6757268","DOIUrl":"https://doi.org/10.1109/RFM.2013.6757268","url":null,"abstract":"The quantification of power amplifiers' distortions during the design stage is important in order to optimize their linearizability. For wideband signals such as LTE-Advanced, time domain characterization of power amplifiers requires specialized and costly measurement equipments. This paper proposes an approach for characterizing the distortions of power amplifiers based on frequency domain metrics. Accordingly, power amplifiers' static as well as dynamic distortions are quantified using the adjacent channel leakage ratio and the spectrum asymmetry index, respectively. Both metrics are defined in the frequency domain and can be extracted from the measured spectrum at the amplifier's output. The proposed metrics were applied for the characterization of two Doherty power amplifiers prototypes. The experimental results demonstrate the effectiveness and robustness of the proposed approach in comparing the strength of static distortions and memory effects of power amplifiers prototypes.","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127809299","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
Microwave bandpass filter using QMSIW 微波带通滤波器采用QMSIW
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 2013-12-01 DOI: 10.1109/RFM.2013.6757242
M. Rehman, Z. Baharudin, M. A. Zakariya, M. Khir, M. T. Khan
{"title":"Microwave bandpass filter using QMSIW","authors":"M. Rehman, Z. Baharudin, M. A. Zakariya, M. Khir, M. T. Khan","doi":"10.1109/RFM.2013.6757242","DOIUrl":"https://doi.org/10.1109/RFM.2013.6757242","url":null,"abstract":"A planar bandpass filter based on a technique that utilizes quarter mode of substrate integrated waveguide (SIW) is presented. This concept reduces the circuit foot print of SIW to a quarter of its size, along with miniaturization good performance and high quality factor is maintained by the structure. The design concept for single-pole resonator structure is presented; and by coupling the resonators a two-pole substrate integrated waveguide bandpass filter is achieved for the frequency of 5.9 GHz. The results show that the filter insertion losses are better than 2 dB and return losses are less than 20 dB. The measured frequency response is in good agreement with the simulated response in the region of interest.","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125664666","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
An alternative method for detection and categorisation of embedded asbestos in built environment 一种在建筑环境中检测和分类嵌入石棉的替代方法
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 2013-12-01 DOI: 10.1109/RFM.2013.6757208
O. Korostynska, A. Phillips, A. Mason, A. Al-Shamma'a
{"title":"An alternative method for detection and categorisation of embedded asbestos in built environment","authors":"O. Korostynska, A. Phillips, A. Mason, A. Al-Shamma'a","doi":"10.1109/RFM.2013.6757208","DOIUrl":"https://doi.org/10.1109/RFM.2013.6757208","url":null,"abstract":"Exposure to asbestos remains a significant hazard in the built environment in the UK and all over the world. Considerable research exists on alternative materials and medical treatments but is limited in the area of detection and categorisation of embedded asbestos material. Accurate survey data is the first line of defence in reducing risks of potential exposure, however advances in technology do not appear to have been exploited with established manual and labour-intensive methods of detection and sample analysis remaining predominant. Six types of asbestos are regulated in the UK. This research investigates the potential application of microwave spectroscopy as an alternative method of analysis in detecting the unique characteristic properties of these minerals. Experimental research is undertaken to obtain empirical measurements of the microwave response signals of asbestos samples in the frequency range of 10 MHz to 15 GHz. Individual sample behaviour is measured in amplitude and frequency response leading to a successful proof of concept that microwave spectroscopy is a technology with the potential to be applied to the surveying functions of asbestos in the built environment pending further applied research.","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116958736","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
SPDT discrete switch design using switchable radial stub resonator for WiMAX and LTE in 3.5 GHz band 采用可切换径向短段谐振器的3.5 GHz频段WiMAX和LTE SPDT离散开关设计
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 2013-12-01 DOI: 10.1109/RFM.2013.6757205
N. Shairi, Badrul Hisham Ahmad, P. Wong
{"title":"SPDT discrete switch design using switchable radial stub resonator for WiMAX and LTE in 3.5 GHz band","authors":"N. Shairi, Badrul Hisham Ahmad, P. Wong","doi":"10.1109/RFM.2013.6757205","DOIUrl":"https://doi.org/10.1109/RFM.2013.6757205","url":null,"abstract":"This paper proposes a Single Pole Double Throw (SPDT) discrete switch design using switchable radial stub resonators for application of WiMAX and LTE in 3.5 GHz band. Commercialized discrete PIN diodes are used to reconfigure the radial stub resonators between bandstop and allpass response where the theory and circuit operation of the resonators are derived and explained. The implementation of the switchable radial stub resonators in SPDT discrete switch design is discussed together with circuit operation. Measurement result shows the isolation of the SPDT discrete switch is higher than 30 dB in the 3.4 to 3.6 GHz range. The advantages are high and wide isolation bandwidth with minimum number of discrete PIN diodes.","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125939379","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: 10
Dual-polarized resonant cavity antenna using slotted-circular patch FSS 双极化谐振腔天线采用开槽圆形贴片FSS
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 2013-12-01 DOI: 10.1109/RFM.2013.6757221
Karishma Sharma, Swati Vaid, A. Mittal
{"title":"Dual-polarized resonant cavity antenna using slotted-circular patch FSS","authors":"Karishma Sharma, Swati Vaid, A. Mittal","doi":"10.1109/RFM.2013.6757221","DOIUrl":"https://doi.org/10.1109/RFM.2013.6757221","url":null,"abstract":"This paper presents the theory and design of a dual-band dual-polarized high gain Resonant Cavity Antenna (RCA). RCA with slotted circular patch frequency selective surface (FSS) is used atop primary feed i.e., microstrip patch antenna at a height of ~λ/2. The proposed structure is simulated using FEM based HFSS and 3D-EM Solver CST Studio Suite. The slot type defect is introduced in the patch FSS to obtain dualband with orthogonal polarization. It is demonstrated how using a slot, linearly polarized RCA gets converted to orthogonally polarized antenna. A gain of upto 16dB (approx) can be achieved at the two bands with different polarization using this structure. The simulation plots of current density on FSS are also studied, to understand the phenomenon.","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129225324","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
Si monolithic planar coreless inductors for high frequency signal transmission 用于高频信号传输的硅单片平面无芯电感
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 2013-12-01 DOI: 10.1109/RFM.2013.6757215
J. Yunas, B. Majlis, A. A. Hamzah, B. Bais
{"title":"Si monolithic planar coreless inductors for high frequency signal transmission","authors":"J. Yunas, B. Majlis, A. A. Hamzah, B. Bais","doi":"10.1109/RFM.2013.6757215","DOIUrl":"https://doi.org/10.1109/RFM.2013.6757215","url":null,"abstract":"In this paper, we present a silicon based planar coupled inductor coil that operates at high frequency region for signal transmission and converter applications. The study is aimed to investigate the role of coreless planar inductor coil design and MEMS technology for the fabrication of the high frequency signal converter. As the result, it is shown that the coupled inductor performances are significantly affected by the coil winding and geometry. An output voltage gain of -3 dB was observed for a coil operating frequency up to 10 MHz. Topics such as lumped element model and surface micromachining process are described in detail in this paper.","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127417310","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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