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2014 IEEE International Wireless Symposium (IWS 2014)最新文献

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Quasi-elliptic compact high-power notch filters with selectivity both below and above the notched passband 在陷波通带上下都有选择性的准椭圆型紧凑高功率陷波滤波器
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864179
R. Snyder
{"title":"Quasi-elliptic compact high-power notch filters with selectivity both below and above the notched passband","authors":"R. Snyder","doi":"10.1109/IEEE-IWS.2014.6864179","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864179","url":null,"abstract":"A quasi-elliptic notch filter response is defined as one in which the ultimate stopband depth is sacrificed in favor of a faster transition from the passband to a specified minimum equi-ripple stopband attenuation level (i.e. steeper attenuation slope) with no increase in filter order (as compared to a Chebychev or similar transfer function design). Such notch filter responses can be achieved if the topology synthesized includes arbitrary frequency variant impedances and line lengths in the main series line of filters, otherwise similar to those in [1], as was shown in [2]. The networks of [2] exhibit lowpass characteristics above the notched passband. In this paper, we substitute high pass sections for some of the lowpass series inverter sections of [2], thereby achieving selectivity both above and below the notched passband. This removes the frequent requirement to “window” the notched passband (add a bandpass filter) for harmonic and subharmonic suppression. The resulting filters exhibit lower loss than earlier “windowed” notch assemblies, provide selectivity above and below the system passband, without sacrificing notch characteristics required within the system passband.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114479342","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
A Q-band doubly balanced mixer in 0.15um GaAs pHEMT technology 0.15um GaAs pHEMT技术的q波段双平衡混频器
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864189
Zhe Chen, Xin Jiang, W. Hong, Jixin Chen
{"title":"A Q-band doubly balanced mixer in 0.15um GaAs pHEMT technology","authors":"Zhe Chen, Xin Jiang, W. Hong, Jixin Chen","doi":"10.1109/IEEE-IWS.2014.6864189","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864189","url":null,"abstract":"In this paper, the development of a Q-band doubly balanced mixer in 0.15um GaAs pHEMT process is presented. Five-conductor coupled line Marchand balun is designed and utilized for the LO and RF signal input. Instead of using conventional input port matching method, the complex impedance of the diode ring is directly matched with differential single-stub networks between the balun and diode ring, which realized a compact layout for the matching network, and greatly improved the return loss of the LO port, thus enhanced the mixer operation bandwidth. Measured results coincide well with the simulations: the conversion gain is -9.2dB ~ -11.9dB for RF and LO frequency from 40GHz ~ 50GHz, and IF frequency is DC ~ 10GHz, with the LO power level of +15dBm. The typical LO-RF isolation is 33 dB with minimum value of 19.3dB for LO between 35GHz to 50 GHz, and the IIP3 is above +12.6dBm for 40GHz ~ 50GHz, which is suitable for the China millimeter wave communication standard “Q-LINKPAN”.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"280 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114488674","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: 7
A low power 2.4-GHz CMOS direct-conversion transmitter for IEEE 802.15.4 IEEE 802.15.4低功耗2.4 ghz CMOS直接转换发射机
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864244
Chihoon Choi, Joonwoo Choi, Minsu Kim, Hojong Park, I. Nam
{"title":"A low power 2.4-GHz CMOS direct-conversion transmitter for IEEE 802.15.4","authors":"Chihoon Choi, Joonwoo Choi, Minsu Kim, Hojong Park, I. Nam","doi":"10.1109/IEEE-IWS.2014.6864244","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864244","url":null,"abstract":"A low-power direct-conversion transmitter based on current-mode operation, which satisfies the IEEE 802.15.4 standard, is proposed and implemented in a 0.13-μm CMOS technology. The proposed transmitter consists of DACs, LPFs, variable gain I/Q up-conversion mixer, a divide-by-two circuit with LO buffer, and a drive amplifier. By combining DAC, LPF, and variable gain I/Q up-conversion mixer with a simple current mirror configuration, the transmitter's power consumption is reduced and its linearity is improved The drive amplifier is a cascode amplifier with gain controls and the 2.4-GHz I/Q differential LO signals are generated by a divide-by-two current-mode-logic (CML) circuit with an external 4.8-GHz input signal The implemented transmitter has 30 dB of gain control range, 0 dBm of maximum transmit output power, 33 dBc of local oscillator leakage, and 40 dBc of the transmit third harmonic component. The transmitter dissipates 10.2 mW from a 1.2-V supply and the die area of the transmitter is 1.76 mm × 1.26 mm.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115189196","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: 9
A compact broadside/conical circularly polarized antenna for pattern diversity design 一种用于方向分集设计的紧凑型宽边/圆锥圆极化天线
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864220
Changjiang Deng, Yue Li, Zhijun Zhang, Zhenghe Feng
{"title":"A compact broadside/conical circularly polarized antenna for pattern diversity design","authors":"Changjiang Deng, Yue Li, Zhijun Zhang, Zhenghe Feng","doi":"10.1109/IEEE-IWS.2014.6864220","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864220","url":null,"abstract":"In this paper, we proposed a compact circularly polarized (CP) antenna with broadside and conical radiation patterns for pattern diversity. The broadside CP pattern is generated by a corner-truncated patch antenna. The conical CP pattern is generated by a rotationally symmetric folded metallic strip, which is fed at centre. A prototype of the diversity antenna operated at 2.4 GHz has been built. Simulations show that the overlapping frequency bandwidth with reflection coefficient less than -10 dB and axial ratio (AR) less than 3 dB for both broadside and conical patterns is about 1 % (2.411 ~ 2.433 GHz). High isolation (below -30 dB) is also achieved in the overlapping band.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115355344","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
Dual-band filter design with new frequency-transformation method having both band-pass and high-pass responses 采用新的频率变换方法设计双带滤波器，同时具有带通和高通响应
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864221
J. Bae, C. Nguyen
{"title":"Dual-band filter design with new frequency-transformation method having both band-pass and high-pass responses","authors":"J. Bae, C. Nguyen","doi":"10.1109/IEEE-IWS.2014.6864221","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864221","url":null,"abstract":"A new frequency-transformation concept is proposed to design a dual-band filter having both band-pass and high-pass responses. The new frequency-transformation incorporates an extra frequency parameter to achieve the additional high-pass response. To realize the concept, the conventional band-pass filter's resonators are modified based on their frequency responses and formulae for the new resonators are derived. A new dual-band filter is also designed with the modified resonators and design equations, fabricated and measured, demonstrating the desired dual-band band-pass and high-pass characteristics.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126660353","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
Array failure diagnosis using sparse excitation source reconstruction: Reliability against position of near field observations 基于稀疏激励源重构的阵列故障诊断:近场观测位置的可靠性
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864185
Y. Zhang, H. Zhao, E. Li
{"title":"Array failure diagnosis using sparse excitation source reconstruction: Reliability against position of near field observations","authors":"Y. Zhang, H. Zhao, E. Li","doi":"10.1109/IEEE-IWS.2014.6864185","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864185","url":null,"abstract":"Sparse excitation source reconstruction is a recently developed method for array failure diagnosis. The method reconstructs the excitation source of all elements utilizing the sparsity of the excitation vector, which improves the accuracy of the source reconstruction. Meanwhile, the sparse excitation source reconstruction provides straightforward information on the failing elements. However, same as other diagnosis methods, the diagnosis reliability of sparse excitation source reconstruction depends on the position of near field observations. In order to facilitate the positioning of near field observations, this work presents numerical study on the diagnosis reliability against the position of near field observations. Based on numerical experiments, guidelines on positioning near field observations are presented.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124867889","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
Antenna measurement system verification by correlation with facility-comparison campaign in the framework of the European association of antennas and propagation 在欧洲天线和传播协会的框架下，通过与设施比较活动的相关性来验证天线测量系统
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864278
M. Saporetti, L. Foged, L. Scialacqua, F. Saccardi, M. Mercier, J. Lui, F. Xue, L. T. Chen, B. Bu
{"title":"Antenna measurement system verification by correlation with facility-comparison campaign in the framework of the European association of antennas and propagation","authors":"M. Saporetti, L. Foged, L. Scialacqua, F. Saccardi, M. Mercier, J. Lui, F. Xue, L. T. Chen, B. Bu","doi":"10.1109/IEEE-IWS.2014.6864278","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864278","url":null,"abstract":"Facility-comparison campaigns are an important on-going activity in the frame of the EurAPP working group on antennas measurements [1]. This work comes from the experience acquired during the VI EU Framework network “Antenna Centre of Excellence (ACE)” [2] as reported in [3-9]. During that project, the different facility comparison activities spanned the range from L-Ka band using different highly stable antennas. The vast amount of data from different measurements institutions within Europe and US were used to establish a reference pattern for each of the high accuracy reference antennas. The reference patterns and the data from the facility comparison activities are considered important instruments to verify the measurements accuracies for antenna measurement ranges as well as to investigate and evaluate possible improvements in measurement set-ups and procedures. In this paper, we report on a system verification and validation activity performed with the SATIMO BTS1940-04 antenna and compare the results to the the highly accurate EurAPP reference pattern of the similar antenna SATIMO BTS1940-01. Future activities include the measurement of the antenna used in the EurAAP activity for more accurate comparison.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131405059","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
Design of a compact 4-port MIMO antenna system 一个紧凑的4端口MIMO天线系统的设计
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864273
Yantao Yu, Lijun Yi
{"title":"Design of a compact 4-port MIMO antenna system","authors":"Yantao Yu, Lijun Yi","doi":"10.1109/IEEE-IWS.2014.6864273","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864273","url":null,"abstract":"Multiple-input-multiple-output (MIMO) technology will be used by future generation mobile networks to achieve very high data rates in both the uplink and downlink channels. MIMO is based on the use of multiple antenna systems within the mobile terminal as well as the base station. Such antenna systems are required to fit within the hand-held terminal which occupies a small size. Antenna integration is one of the major challenges because strong mutual coupling occurs between closely spaced array elements in compact arrays. In this paper, a novel design of 4-port compact MIMO antenna system with reduced mutual coupling is presented. The proposed decoupling network consists of reactive elements, the values of which can be calculated by eigenmode analysis. Design procedures and equations are proposed.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125668894","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
Analysis and modeling of CMOS millimeter-wave M:N six-port transformers CMOS毫米波M:N六端口变压器的分析与建模
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864231
Zongzhi Gao, J. Song, K. Kang
{"title":"Analysis and modeling of CMOS millimeter-wave M:N six-port transformers","authors":"Zongzhi Gao, J. Song, K. Kang","doi":"10.1109/IEEE-IWS.2014.6864231","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864231","url":null,"abstract":"This paper presents an modeling of on-chip M:N transformer with six-port and develops a series branch parameters extraction methodology for the proposed transformer model. These model and parameters extraction methodology are verified by measurements and full-wave electromagnetic simulation. Compared with the measurement, the proposed transformer model can accurately predict the performance of transformer from DC to the self-resonance frequency.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129759022","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
Compact quadruplet bandpass filter synthesis using λ/4 resonators 利用λ/4谐振器合成紧凑四重态带通滤波器
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864175
Songbai Zhang, Lei Zhu
{"title":"Compact quadruplet bandpass filter synthesis using λ/4 resonators","authors":"Songbai Zhang, Lei Zhu","doi":"10.1109/IEEE-IWS.2014.6864175","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864175","url":null,"abstract":"This paper presents a unified coupling-matrix synthesis method for microstrip quadruplet bandpass filter on λ/4 resonators. The mainline is implemented with cascading four λ/4 resonators via alternative J and K inverters, while the weak cross coupling path is created with a J inverter between the 1st and 4th λ/4 resonators. The resultant bandpass filter features a generalized Chebyshev in-band frequency response with a pair of determined finite transmission zeros. All the values of pertained J and K inverters are synthesized from the coupling matrix and judiciously extracted based on the fullwave simulation. Finally, a microstrip quadruplet bandpass filter centering at 2.4 GHz with a fractional bandwidth of 10.0% is designed via the proposed synthesis approach. The predicted filtering frequency responses are verified by both fullwave simulated and measured results.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129929919","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
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