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A closed-form formula for RSSI-based DoA estimation with Switched Beam Antennas 一种基于rssi的开关波束天线DoA估计的封闭公式
2015 European Microwave Conference (EuMC) Pub Date : 2015-12-07 DOI: 10.1109/EURAD.2015.7346307
S. Maddio, M. Passafiume, A. Cidronali, G. Manes
{"title":"A closed-form formula for RSSI-based DoA estimation with Switched Beam Antennas","authors":"S. Maddio, M. Passafiume, A. Cidronali, G. Manes","doi":"10.1109/EURAD.2015.7346307","DOIUrl":"https://doi.org/10.1109/EURAD.2015.7346307","url":null,"abstract":"In this paper we present a novel Direction of Arrival (DoA) estimator for Switched Beam Antennas (SBA). The proposed approach is based on the best analytic approximation of the power pattern ratio between adjacent beams. Under quite general assumptions, the proposed approach resolves to the solution of a quadratic equation. Compared to conventional estimators, the precision of the proposed approach is competitive, permitting a cost-effective solution for low complexity implementation. Computer simulations and experimental verifications in a anechoic setup confirm the proposed approach when operating with a circular polarized SBA and the received signal strength data collected with a low-cost commercial transceiver. A mean error of 1.1° with a standard deviation of 1.6° is experimentally observed when the SBA communicates with a co-polarized target at the range of 2 meters. Only 5% of the observation angle is affected by an error exceeding 5°.","PeriodicalId":350086,"journal":{"name":"2015 European Microwave Conference (EuMC)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131581352","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: 8
Analysis and design of a slotted waveguide antenna array using hollow substrate integrated waveguide 采用空心基板集成波导的开槽波导天线阵列的分析与设计
2015 European Microwave Conference (EuMC) Pub Date : 2015-12-07 DOI: 10.1109/EURAD.2015.7346322
Lukui Jin, R. Lee, I. Robertson
{"title":"Analysis and design of a slotted waveguide antenna array using hollow substrate integrated waveguide","authors":"Lukui Jin, R. Lee, I. Robertson","doi":"10.1109/EURAD.2015.7346322","DOIUrl":"https://doi.org/10.1109/EURAD.2015.7346322","url":null,"abstract":"In this paper, a 6 × 6 planar slot array based on a hollow substrate integrated waveguide (HSIW) is presented. To eliminate the tilting of the main beam, the slot array is fed from the centre at the back of the HSIW, which results in a blockage area. To reduce the impact on sidelobe levels, a slot extrusion technique is introduced. A simplified multiway power divider is demonstrated to feed the array elements and the optimisation procedure is described. To verify the antenna design, a 6 × 6 planar array is fabricated and measured in a low temperature co-fired ceramic (LTCC) technology. The HSIW has lower loss, comparable to standard WR28, and a high gain of 17.1 dBi at 35.5 GHz has been achieved in the HSIW slot array.","PeriodicalId":350086,"journal":{"name":"2015 European Microwave Conference (EuMC)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126851758","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: 6
High-gain substrate integrated cavity antenna array with laminated waveguide feeding network for W-band application 带层状波导馈电网络的w波段高增益基板集成腔天线阵列
2015 European Microwave Conference (EuMC) Pub Date : 2015-12-03 DOI: 10.1109/EUMC.2015.7345947
Baolin Cao, Hao Wang, Jianfang Zheng, Yong Huang
{"title":"High-gain substrate integrated cavity antenna array with laminated waveguide feeding network for W-band application","authors":"Baolin Cao, Hao Wang, Jianfang Zheng, Yong Huang","doi":"10.1109/EUMC.2015.7345947","DOIUrl":"https://doi.org/10.1109/EUMC.2015.7345947","url":null,"abstract":"In this paper, a W-band high-gain L-probe excited substrate integrated cavity (SIC) antenna and its arrays on low-temperature co-fired ceramic (LTCC) substrate are presented. To achieve high gain, the SIC antenna is excited by using the L-probe feed techniques. As for this antenna, the SIC is the main radiator, and the L-probe is also involved in radiation. Moreover, a compact two-layer low-loss laminated waveguide (LWG) feeding network is designed for a 4 × 4 antenna array. By combining the high-gain antenna element and low-loss feeding network, a high-gain antenna array is achieved. The proposed antenna array shows a wide measured impedance of 15.9% from 87 GHz to 102 GHz for |S11|<; -10 dB, and a gain up to 18.3 dBi by reconfiguring radiating elements, feeding network, and the transition. Furthermore, the measured aperture efficiency of the proposed array is 40 %.","PeriodicalId":350086,"journal":{"name":"2015 European Microwave Conference (EuMC)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115346690","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
A new area formation approach for millimeter wave communication systems employing a dielectric waveguide 采用介电波导的毫米波通信系统的新区域形成方法
2015 European Microwave Conference (EuMC) Pub Date : 2015-12-03 DOI: 10.1109/EUMC.2015.7345957
K. Kawai, Takuma Takada, A. Fukuda, H. Okazaki, S. Narahashi
{"title":"A new area formation approach for millimeter wave communication systems employing a dielectric waveguide","authors":"K. Kawai, Takuma Takada, A. Fukuda, H. Okazaki, S. Narahashi","doi":"10.1109/EUMC.2015.7345957","DOIUrl":"https://doi.org/10.1109/EUMC.2015.7345957","url":null,"abstract":"This paper proposes a new approach to form a communication area for a millimeter wave communication system. This approach utilizes no access point equipment that encloses an antenna, amplifier, etc. but a dielectric waveguide that can easily deform its shape. The communication area is formed only by inflecting the dielectric waveguide. This is because millimeter wave signals can be radiated from the inflected part of the dielectric waveguide. Based on this approach, it is easy to move and add the communication area by moving a location and increasing the number of the inflected parts, respectively. This paper shows fundamental characteristics of the dielectric waveguide when the waveguide is bended at 180-degree angle by simulation and measurement. Approximately 50% of input signal at 38 GHz is emitted from the waveguide when the bend radius is 5 cm.","PeriodicalId":350086,"journal":{"name":"2015 European Microwave Conference (EuMC)","volume":"54 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120892799","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 200–325-GHz wideband, low-loss modified Marchand balun in SiGe BiCMOS technology 基于SiGe BiCMOS技术的200 - 325 ghz宽带、低损耗改进型马尔尚均衡器
2015 European Microwave Conference (EuMC) Pub Date : 2015-12-03 DOI: 10.1109/EUMC.2015.7345694
Faisal Ahmed, M. Furqan, A. Stelzer
{"title":"A 200–325-GHz wideband, low-loss modified Marchand balun in SiGe BiCMOS technology","authors":"Faisal Ahmed, M. Furqan, A. Stelzer","doi":"10.1109/EUMC.2015.7345694","DOIUrl":"https://doi.org/10.1109/EUMC.2015.7345694","url":null,"abstract":"A modified version of the Marchand balun based on three folded symmetric coupled lines is presented in this paper. The S-parameters of a quasi-TEM coupler are derived in the case when even- and odd- mode phase velocities are unequal. The effects on the performance of the Marchand balun are then investigated by analyzing its calculated S-paramaters under different phase-velocity-ratios of both the modes. Measurements show a minimum insertion loss of 2.3 dB, and a 1-dB insertion loss bandwidth from 200-325 GHz. The amplitude imbalance is less than 1.5 dB upto 325 GHz, while the phase imbalance is below 10 deg upto 273 GHz. Through out the operating range the input return loss remains higher than 15 dB. The balun is fabricated in a 130nm SiGe BiCMOS process and occupies only 0.015mm2, excluding the pads.","PeriodicalId":350086,"journal":{"name":"2015 European Microwave Conference (EuMC)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127474653","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: 14
Power amplifier performances and miniaturization improvement based on Wire Bondable vertical Silicon Capacitors 基于线键合垂直硅电容器的功率放大器性能及小型化改进
2015 European Microwave Conference (EuMC) Pub Date : 2015-12-03 DOI: 10.1109/EUMC.2015.7345944
Olivier Gaborieau, L. Lenoir
{"title":"Power amplifier performances and miniaturization improvement based on Wire Bondable vertical Silicon Capacitors","authors":"Olivier Gaborieau, L. Lenoir","doi":"10.1109/EUMC.2015.7345944","DOIUrl":"https://doi.org/10.1109/EUMC.2015.7345944","url":null,"abstract":"This paper presents Wire Bondable vertical Silicon Capacitors (WBSC) performances in high-frequency high-power applications up to 10 GHz and results on capacitance value versus die size. These capacitors combine ultra-deep trench MOS capacitors of few nF and single layer MOS capacitors of few pF in a 0101 single package. The performances of these capacitors have been compared with conventional commercialized vertical capacitors. The benefits of using these capacitors have been quantified thanks to their integration in a power amplifier.","PeriodicalId":350086,"journal":{"name":"2015 European Microwave Conference (EuMC)","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124931650","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
GaN based wideband T/R module for multi-function applications 基于GaN的多功能宽带收发模块
2015 European Microwave Conference (EuMC) Pub Date : 2015-12-03 DOI: 10.1109/EUMC.2015.7345813
R. Rieger, A. Klaassen, P. Schuh, M. Oppermann
{"title":"GaN based wideband T/R module for multi-function applications","authors":"R. Rieger, A. Klaassen, P. Schuh, M. Oppermann","doi":"10.1109/EUMC.2015.7345813","DOIUrl":"https://doi.org/10.1109/EUMC.2015.7345813","url":null,"abstract":"The next generation of AESA antennas will be challenged with the need for enabling a combination of different operating modes within the same antenna front end, including radar, communication (data links), and jamming (electronic warfare, EW). This leads to enhanced demands especially with regard to the usable RF bandwidth. One main step to overcome this is the use of disruptive semiconductor materials for RF MMICs. As the RF section of today's T/R modules for AESA applications is typically based on GaAs technology, GaN and SiGe BiCMOS will challenge or even replace it, here. This paper will describe the design of a GaN-based T/R module using all-European MMICs and covering the X-band from 8 to 12 GHz and its realisation at Airbus Defence and Space in Ulm. It will show some measurement results and give an impression on achieved performance. Further this paper shall describe potential next steps and give an outlook towards future developments.","PeriodicalId":350086,"journal":{"name":"2015 European Microwave Conference (EuMC)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126620992","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: 23
Enhancing the spurious free range in inductive rectangular waveguide filters 提高电感矩形波导滤波器的杂散自由范围
2015 European Microwave Conference (EuMC) Pub Date : 2015-12-03 DOI: 10.1109/EUMC.2015.7345854
J. M. Perez Escudero, D. Martinez Martinez, A. Pons Abenza, J. A. Lorente Acosta, Alejandro Álvarez Melcón, M. Guglielmi
{"title":"Enhancing the spurious free range in inductive rectangular waveguide filters","authors":"J. M. Perez Escudero, D. Martinez Martinez, A. Pons Abenza, J. A. Lorente Acosta, Alejandro Álvarez Melcón, M. Guglielmi","doi":"10.1109/EUMC.2015.7345854","DOIUrl":"https://doi.org/10.1109/EUMC.2015.7345854","url":null,"abstract":"This work proposes a new strategy for the improvement of the out of band response of rectangular waveguide inductive bandpass filters. The strategy consists of selecting non-uniform coupling window thicknesses along the filter structure. The basic idea is that irises of different thicknesses can produce the same coupling values in the passband but have different loading effects in the harmonic resonances. To further increase the level of spurious rejection, the above technique is combined with the use of resonators of different widths. To demonstrate the effectiveness of the proposed idea, the design of a fifth order, non-uniform Tchebyshev bandpass filter is fully described showing how the technique presented in this paper indeed results in an important improvement of the out of band performance with respect to conventional inductive filters.","PeriodicalId":350086,"journal":{"name":"2015 European Microwave Conference (EuMC)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115082520","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
Millimetre wave transmitter based on a few-layer graphene frequency multiplier 基于几层石墨烯倍频器的毫米波发射机
2015 European Microwave Conference (EuMC) Pub Date : 2015-12-03 DOI: 10.1109/EUMC.2015.7345812
C. Vázquez, A. Hadarig, S. Ver Hoeye, R. Camblor, Miguel Fernández, G. Hotopan, L. Alonso, F. Las-Heras
{"title":"Millimetre wave transmitter based on a few-layer graphene frequency multiplier","authors":"C. Vázquez, A. Hadarig, S. Ver Hoeye, R. Camblor, Miguel Fernández, G. Hotopan, L. Alonso, F. Las-Heras","doi":"10.1109/EUMC.2015.7345812","DOIUrl":"https://doi.org/10.1109/EUMC.2015.7345812","url":null,"abstract":"In this work, a millimetre/submillimetre wave transmitter prototype integrating a graphene based frequency multiplier and a diagonal horn antenna is presented. With a driving signal in the WR-28 frequency band (26.5-40 GHz), an output signal in the WR-3 frequency band (220-330 GHz) is generated and radiated. A prototype has been manufactured using high precision 3D printing techniques. The performance with multiplication orders 5, 7 and 9 has been compared, obtaining maximum power levels of about -45 dBm, measured at a distance of 250 mm. Measured radiation patterns are also presented.","PeriodicalId":350086,"journal":{"name":"2015 European Microwave Conference (EuMC)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116409905","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 wide dynamic range microwave frequency discriminator for cognitive radio 一种用于认知无线电的宽动态范围微波鉴频器
2015 European Microwave Conference (EuMC) Pub Date : 2015-12-03 DOI: 10.1109/EUMC.2015.7345907
Debalina Chatterjee, K. Blau, M. Hein
{"title":"A wide dynamic range microwave frequency discriminator for cognitive radio","authors":"Debalina Chatterjee, K. Blau, M. Hein","doi":"10.1109/EUMC.2015.7345907","DOIUrl":"https://doi.org/10.1109/EUMC.2015.7345907","url":null,"abstract":"Microwave frequency discriminators based on six-port receiver architecture are becoming increasingly popular for a multitude of applications in sensing and identification of spectrum holes, e.g., for cognitive radio applications. One of the key limiting factors of a six-port receiver is its narrow dynamic range which is mainly limited by the use of square-law diode detectors in the primary detector circuit. In order to improve its dynamic range, this paper proposes to use logarithmic detectors for the detector stage of the six-port receiver. Such an approach helps in detecting signals over a wide dynamic range of 80 dB, thus making it almost comparable to that of the available heterodyne receivers. Additionally, the measured frequency error did not exceed ±51 MHz (3.5%) over the frequency range of 1 to 2 GHz using the equations for the power proportional voltages to estimate the phase angle and accordingly, the frequency, which can then be minimized using further digital post-processing. Also, since the basic operating principle of such a receiver was essentially based on square-law detector circuits so far, this paper also describes the new working principle that needs to be employed if using logarithmic detectors.","PeriodicalId":350086,"journal":{"name":"2015 European Microwave Conference (EuMC)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117088859","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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