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2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT)最新文献

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Study of side lobe levels for wideband phased arrays 宽带相控阵旁瓣电平研究
2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2012-05-05 DOI: 10.1109/ICMMT.2012.6230189
M. Jin, Cheng He
{"title":"Study of side lobe levels for wideband phased arrays","authors":"M. Jin, Cheng He","doi":"10.1109/ICMMT.2012.6230189","DOIUrl":"https://doi.org/10.1109/ICMMT.2012.6230189","url":null,"abstract":"Utilization of true-time-delay (TTD) is an important approach for improving the beam-pointing accuracy of wideband phased arrays. This paper studies the side lobe properties as the true-time-delay are equipped at subarray level. The study shows that side lobe levels increase because of periodic phase error. And then, an element-level TTD line scheme is proposed for effective reduction of side lobe levels.","PeriodicalId":421574,"journal":{"name":"2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":" 22","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132095885","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
Design and realization of a microminiaturized filter based on broadside-coupled interdigital structure 基于宽频耦合数字间结构的微型化滤波器的设计与实现
2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2012-05-05 DOI: 10.1109/ICMMT.2012.6230402
Hui Li
{"title":"Design and realization of a microminiaturized filter based on broadside-coupled interdigital structure","authors":"Hui Li","doi":"10.1109/ICMMT.2012.6230402","DOIUrl":"https://doi.org/10.1109/ICMMT.2012.6230402","url":null,"abstract":"To achieve miniaturization of Ultra-wideband(UWB) bandpass filter, a multi-layer interdigital-coupled filter and its design method is proposed. The filter realizes the bigger coupling coefficient using broadside-coupled structure, and unnecessary cross coupling is reduced by widening the width of stripline resonator, It simplifies design method of the filter. A six-pole inter digital bandpass filter centered at 3 GHz with a fractional bandwidth of 58% using the proposed structure is designed and realized, the size of filter is 6mm-10mm. The simulation results show that the filter keeps the advantage of the traditional interdigital-coupled filter with great stopband characteristics and spurious response.","PeriodicalId":421574,"journal":{"name":"2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"2012 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128847225","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
Investigation on dual-armed sinuous antenna 双臂弯曲天线的研究
2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2012-05-05 DOI: 10.1109/ICMMT.2012.6230077
Daotie Li, Junfa Mao
{"title":"Investigation on dual-armed sinuous antenna","authors":"Daotie Li, Junfa Mao","doi":"10.1109/ICMMT.2012.6230077","DOIUrl":"https://doi.org/10.1109/ICMMT.2012.6230077","url":null,"abstract":"A fully parameterized angularly zigzagged planar self-complementary dual-armed sinuous antenna with diameter D = 73.8 mm is optimally designed and simulated with Ansoft HFSS™ v.13. Ultra-wideband (S<sub>11</sub> ≤ -10 dB), good transient properties, full polarization, and high gain (5 dBi-7 dBi) are acquired within band 1.5 GHz-15 GHz. Three linearly polarized bands (AR≥30 dB): f<sub>1</sub>=3.1 GHz (2.85 GHz-3.78 GHz, 30%), f<sub>3</sub> = 5.5 GHz (5.28 GHz-5.84 GHz, 10%), f<sub>4</sub> = 8.4 GHz, f<sub>5</sub> = 10 GHz (7.87 GHz-10.41 GHz, 25.4%) and two circularly polarized bands (AR≤15 dB): f<sub>2</sub> = 4.6 GHz (4.2 GHz-4.75 GHz, 12%, RHCP), f<sub>6</sub> = 13.4 GHz(11.54 GHz-15 GHz, 25.8%, LHCP) are obtained within this band. Gain patterns of these bands are all bidirectional in broadside (Theta = 0°) and almost azimuth-free in horizontal plane with 26°-140° axial ratio beam width. So it is very attractive to application in ultra-wideband multi-polarization systems, such as electronic warfare, track and guidance radar, radio astronomy and other communication systems.","PeriodicalId":421574,"journal":{"name":"2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128890658","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
Forward behavioral modeling of concurrent dual-band power amplifiers using extended real valued time delay neural networks 基于扩展实值时滞神经网络的并发双频功率放大器前向行为建模
2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2012-05-05 DOI: 10.1109/ICMMT.2012.6230449
Zihong Huang, Wen-hua Chen, Zhenghe Feng, F. Ghannouchi
{"title":"Forward behavioral modeling of concurrent dual-band power amplifiers using extended real valued time delay neural networks","authors":"Zihong Huang, Wen-hua Chen, Zhenghe Feng, F. Ghannouchi","doi":"10.1109/ICMMT.2012.6230449","DOIUrl":"https://doi.org/10.1109/ICMMT.2012.6230449","url":null,"abstract":"The distortions induced by inter-modulations and cross-modulations in concurrent dual-band power amplifiers (PAs) are evidenced and characterized using multi-tone signals. Given the presence of cross-modulations, a comprehensive extended real-valued time-delay neural network (extended-RVTDNN) is proposed to model the nonlinear behavior of concurrent dual-band Pas. Two three-carrier WCDMA signals are applied to a dual-band Doherty PA prototype for modeling verification. The experimental results show that the proposed model approximates the PA with normalized mean square errors (NMSEs) of -38.48dB and -35.42dB in the lower and upper bands, respectively. Compared with the conventional single-band RVTDNN, this new method achieves an improvement in accuracy of more than 10dB.","PeriodicalId":421574,"journal":{"name":"2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"132 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124264102","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: 5
Iterative method for serpentine mode converter design 蛇形模式变换器设计的迭代法
2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2012-05-05 DOI: 10.1109/ICMMT.2012.6229948
Qiang Wang, Haijing Zhou, Y. He, B. Li
{"title":"Iterative method for serpentine mode converter design","authors":"Qiang Wang, Haijing Zhou, Y. He, B. Li","doi":"10.1109/ICMMT.2012.6229948","DOIUrl":"https://doi.org/10.1109/ICMMT.2012.6229948","url":null,"abstract":"Iterative method based on Eric's work for serpentine mode converter design is established. It makes use of steepest ascent technique to search the local optimum, and jump mechanism can be learned to find the global optimum if necessary. Step size is given and works well during the procedure. Structure control methods can be used to realize some structural characteristics. Three kinds of mode converters are designed on the basis of this method and verified by commercial software CST.","PeriodicalId":421574,"journal":{"name":"2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124274061","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
Novel design of printed multiband antenna for wireless applications 用于无线应用的新型印刷多波段天线设计
2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2012-05-05 DOI: 10.1109/ICMMT.2012.6230178
W. Li, Y. Hei, Jing Yang, Xiao-wei Shi
{"title":"Novel design of printed multiband antenna for wireless applications","authors":"W. Li, Y. Hei, Jing Yang, Xiao-wei Shi","doi":"10.1109/ICMMT.2012.6230178","DOIUrl":"https://doi.org/10.1109/ICMMT.2012.6230178","url":null,"abstract":"A novel compact printed monopole antenna with multiple operating bands for WLAN/WiMAX is presented. By using a Z-shaped strip, dual operation bands centered at 2.5 and 5.7 GHz can be obtained. To achieve the WiMAX application band centered at 3.5GHz, an h-shaped strip is introduced. Several multiband operation characteristics of the proposed antenna, such as impedance bandwidth, radiation pattern, and realized gain have been investigated. Moreover, the sensitivity of the proposed antenna to the size variations in its feed ground has also been analyzed. The measured results are in good agreement with the simulated ones.","PeriodicalId":421574,"journal":{"name":"2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114856084","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
A 650 GHz broadband 3dB coupler using a bridged PPDW 使用桥接PPDW的650 GHz宽带3dB耦合器
2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2012-05-05 DOI: 10.1109/ICMMT.2012.6230115
L. Ye, Yong Zhang, R. Xu, Weigan Lin
{"title":"A 650 GHz broadband 3dB coupler using a bridged PPDW","authors":"L. Ye, Yong Zhang, R. Xu, Weigan Lin","doi":"10.1109/ICMMT.2012.6230115","DOIUrl":"https://doi.org/10.1109/ICMMT.2012.6230115","url":null,"abstract":"In this paper, a 650GHz broadband 3dB directional coupler with very flat coupling based on bridged parallel plate dielectric waveguide (PPDW) is presented. In the uniform coupling section, a bridge structure between the two PPDWs is employed to obtain accurate coupling value and achieve a broadband coupling. And in the transition sections, two quarter-circle bend arms are introduced to achieve strong isolation between the adjacent ports and reduce the power reflection in all ports. It is found that this new type of bridged coupler exhibits excellent performance at terahertz frequencies. Calculated results show that return loss is greater than 18dB, isolation is better than 27dB, and the average coupler loss is 1.3dB, over a percentage bandwidth of 6.2% at 650GHz. Compared to the conventional PPDW coupler, the bridged PPDW coupler shows significantly greater bandwidth (about 2.3 times), compact and mechanically stable with a much shorter uniform coupling length (reduced about 56%), which may have potential applications for terahertz integrated circuits and systems.","PeriodicalId":421574,"journal":{"name":"2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114698856","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
Novel zeroth-order folded-monopole antenna in low profile 新型低轮廓零阶折叠单极天线
2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2012-05-05 DOI: 10.1109/ICMMT.2012.6230345
Jian‐Qiang Gong, Jun-bo Jiang, C. Liang, Bian Wu
{"title":"Novel zeroth-order folded-monopole antenna in low profile","authors":"Jian‐Qiang Gong, Jun-bo Jiang, C. Liang, Bian Wu","doi":"10.1109/ICMMT.2012.6230345","DOIUrl":"https://doi.org/10.1109/ICMMT.2012.6230345","url":null,"abstract":"A novel low-profile folded-monopole antenna is proposed in this paper, which is composed of two metamaterial unit cells coupled with microstrip gap. It works under the zeroth-order resonance mode, and its vertical radiation vias can be fed in phase without loading any lumped surface mounted elements or inserting any auxiliary phase-shifting lines compared to previously reported designs. An equivalent circuit model for the novel antenna is presented, based on which an even-odd mode analysis is carried out, testifying that the even-mode current is predominant on the radiation vias at the zeroth-order frequency. According to the multiple folded monopole theory, there is a substantial increase in the radiation resistance, enabling the antenna to be well matched without adopting any external matching network. In order to verify the theoretical analyses, a prototype antenna of λ/10 × λ/20 × λ/10, operative at 3.0 GHz, are fabricated and measured, which can achieve radiation efficiency of above 90% and fully omnidirectional monopole-type radiation pattern.","PeriodicalId":421574,"journal":{"name":"2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114992085","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 0.7–1.9GHz broadband pseudo-differential power amplifier using 0.13-μm SiGe HBT technology 采用0.13 μm SiGe HBT技术的0.7-1.9GHz宽带伪差分功率放大器
2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2012-05-05 DOI: 10.1109/ICMMT.2012.6230304
Li Wenyuan, Zhang Qian
{"title":"A 0.7–1.9GHz broadband pseudo-differential power amplifier using 0.13-μm SiGe HBT technology","authors":"Li Wenyuan, Zhang Qian","doi":"10.1109/ICMMT.2012.6230304","DOIUrl":"https://doi.org/10.1109/ICMMT.2012.6230304","url":null,"abstract":"In this paper, a broadband power amplifier operating from 0.7GHz to 1.9GHz is designed and fabricated using 0.13-μm SiGe HBT technology. The pseudo-differential structure, adaptive bias control technique, broadband matching network and compensated matching technique are used to improve the performance. The simulation results show that the power amplifier operates from 0.7GHz to 1.9GHz, P1dB and PAE are better than 25dBm and 23%, respectively.","PeriodicalId":421574,"journal":{"name":"2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115081801","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: 5
Design and realization of a L-band 1200W power amplifier l波段1200W功率放大器的设计与实现
2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2012-05-05 DOI: 10.1109/ICMMT.2012.6230397
Zheng Yong, Zi-Lun Wei, Yi Lei, Ke Lu, Jiang Li
{"title":"Design and realization of a L-band 1200W power amplifier","authors":"Zheng Yong, Zi-Lun Wei, Yi Lei, Ke Lu, Jiang Li","doi":"10.1109/ICMMT.2012.6230397","DOIUrl":"https://doi.org/10.1109/ICMMT.2012.6230397","url":null,"abstract":"The Design guidelines are presented for circuit matching and power combination in a high-power amplifier. And then a practical L-band solid-state amplifier is designed and realized with high output power (up to 1200W continuous wave), high linearity, low gain variation and high stability to meet the increasing needs for applications in satellite communication and navigation, TT&C (Telemetry Tracking and Command), satellite television broadcasting, etc.","PeriodicalId":421574,"journal":{"name":"2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115107126","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
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