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Tri-band Minkowski Island patch antenna with complementary split ring resonator at the ground plane 三波段闵可夫斯基岛贴片天线，在地平面上有互补的分环谐振器
2013 Conference on Microwave Techniques (COMITE) Pub Date : 2013-04-17 DOI: 10.1109/COMITE.2013.6545042
B. Ahmad, H. Nornikman, M. Abd Aziz, M. Othman, A. R. Othman
{"title":"Tri-band Minkowski Island patch antenna with complementary split ring resonator at the ground plane","authors":"B. Ahmad, H. Nornikman, M. Abd Aziz, M. Othman, A. R. Othman","doi":"10.1109/COMITE.2013.6545042","DOIUrl":"https://doi.org/10.1109/COMITE.2013.6545042","url":null,"abstract":"The Minkoski Island patch antenna with complementary split ring resonator at the ground plane are proposed in this work. At the first stage, the normal square patch antennas mainly designed. Then, the Minkowski patch antenna was designed using 1st iteration technique and 2nd iteration technique. The Minkowski fractal shape slot was embedded in the center of the patch to form a Minkowski Island patch antenna. The next step is to apply the partial ground technique and embed the split ring resonator at the ground plane. This antenna was operating in tri-band frequency that is at 2.400 GHz, 3.500 GHz and 5.200 GHz with a return loss of - 11.868 dB, - 13.554 dB and - 18.112 dB respectively. The gain measured of this antenna is 1.286 dB, 1.410 dB and 3.945 dB.","PeriodicalId":372048,"journal":{"name":"2013 Conference on Microwave Techniques (COMITE)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114197154","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: 12
Design of microstrip meander-folded hairpin resonator filters 微带弯曲折叠发夹谐振器滤波器的设计
2013 Conference on Microwave Techniques (COMITE) Pub Date : 2013-04-17 DOI: 10.1109/COMITE.2013.6545045
M. Nedelchev
{"title":"Design of microstrip meander-folded hairpin resonator filters","authors":"M. Nedelchev","doi":"10.1109/COMITE.2013.6545045","DOIUrl":"https://doi.org/10.1109/COMITE.2013.6545045","url":null,"abstract":"The paper presents design, simulation and measurement of microstrip filters based on meander folded hairpin resonators. For the design purposes, the coupling coefficient of the coupled resonators of different topologies is investigated. Each topology is simulated in full-wave electromagnetic simulator and the coupling coefficient is extracted. Design graphs for the coupling coefficients are presented. Based on the simulation results, two design examples are carried out. The first design example is 4 pole cross coupled Chebyshev filter presenting two symmetrical attenuation poles. The second example is 4 pole classic Chebyshev filter. There is very good agreement between the simulation and measurement results.","PeriodicalId":372048,"journal":{"name":"2013 Conference on Microwave Techniques (COMITE)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114322325","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
Novel components for antenna array feed 天线阵馈电的新型元件
2013 Conference on Microwave Techniques (COMITE) Pub Date : 2013-04-17 DOI: 10.1109/COMITE.2013.6545040
M. Chyba, P. Bezousek
{"title":"Novel components for antenna array feed","authors":"M. Chyba, P. Bezousek","doi":"10.1109/COMITE.2013.6545040","DOIUrl":"https://doi.org/10.1109/COMITE.2013.6545040","url":null,"abstract":"In this article two microwave components for planar waveguide antenna array in S band designed accordingly to special requirements are described. They are a compact end-launched waveguide to coaxial adapter and a hybrid stripline - waveguide directional test signal probe. Numerical simulations, technical design and obtained parameters of those devices are included.","PeriodicalId":372048,"journal":{"name":"2013 Conference on Microwave Techniques (COMITE)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130431696","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
Design and modeling of an output microwave filter for S band primary radar transmitter S波段一次雷达发射机输出微波滤波器的设计与建模
2013 Conference on Microwave Techniques (COMITE) Pub Date : 2013-04-17 DOI: 10.1109/COMITE.2013.6545054
T. Zálabský
{"title":"Design and modeling of an output microwave filter for S band primary radar transmitter","authors":"T. Zálabský","doi":"10.1109/COMITE.2013.6545054","DOIUrl":"https://doi.org/10.1109/COMITE.2013.6545054","url":null,"abstract":"In this paper a design of an output microwave filter for S band primary radar transmitter is described. Filter is realized by microstrip technology. The article presents two types of microwave filters. The first type is a band-pass filter; the second one is a low-pass filter. It is very difficult to achieve a low filter insertion loss in the passband, while maintaining a sufficient spurious signal suppression in the restraint band. Finally the low pass filter was chosen for implementation. The implemented filter insertion loss is below 0.3 dB and the restraint band attenuation is above the 35 dB. Since the resonant elements are small, filter dimensions are compact. Simulations results of the both filters are presented. In the case of the low-pass filter the simulated and experimentally verified parameters are compared.","PeriodicalId":372048,"journal":{"name":"2013 Conference on Microwave Techniques (COMITE)","volume":"39 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131652799","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
High temperature AlGaN/GaN HFET microwave characterization and modeling 高温AlGaN/GaN HFET微波表征与建模
2013 Conference on Microwave Techniques (COMITE) Pub Date : 2013-04-17 DOI: 10.1109/COMITE.2013.6545055
M. Tomáška
{"title":"High temperature AlGaN/GaN HFET microwave characterization and modeling","authors":"M. Tomáška","doi":"10.1109/COMITE.2013.6545055","DOIUrl":"https://doi.org/10.1109/COMITE.2013.6545055","url":null,"abstract":"The paper reports high temperature on-wafer microwave characterization setup for AlGaN/GaN HEMT devices. S-parameters were on-wafer measured in frequency range up to 40 GHz in wide bias point settings as well as microwave parameters fT and fmax were measured and visualized in the temperature range from room temperature up to 425°C. Significant influence of temperature on microwave properties was observed.","PeriodicalId":372048,"journal":{"name":"2013 Conference on Microwave Techniques (COMITE)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126347205","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
Investigation of dual and triple meander slot to microstrip patch antenna 双槽和三槽微带贴片天线的研究
2013 Conference on Microwave Techniques (COMITE) Pub Date : 2013-04-17 DOI: 10.1109/COMITE.2013.6545039
M. Abd Aziz, Z. Zakaria, M. N. Husain, N. Zainuddin, M. Othman, B. Ahmad
{"title":"Investigation of dual and triple meander slot to microstrip patch antenna","authors":"M. Abd Aziz, Z. Zakaria, M. N. Husain, N. Zainuddin, M. Othman, B. Ahmad","doi":"10.1109/COMITE.2013.6545039","DOIUrl":"https://doi.org/10.1109/COMITE.2013.6545039","url":null,"abstract":"A dual and triple microstrip meander slot antenna is presented for Wireless Local Area Network (WLAN) application. The antenna also has the potential to be used as the receiving antenna in an energy harvesting system. The proposed antenna comprises a rectangular microstrip patch element embedded with meander slots. The parametric study is performed to investigate the characteristic of microstrip patch antenna with double meandered slots compared to the same microstrip patch antenna with triple meandered slots. Microstrip patch antenna with dual meander slot can achieve return loss until -24.54dB. However the gain of the antenna, 1.46 dBi is lower than microstrip patch antenna with triple meander slot which is 4.28 dBi. Other antenna parameters are also investigated such as bandwidth, radiation patterns and directivity have been observed and simulated. Measurement results are also recorded in this paper.","PeriodicalId":372048,"journal":{"name":"2013 Conference on Microwave Techniques (COMITE)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124238936","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: 28
Automatically low clouds or fog detection, based on two visibility meters and FSO 自动低云或雾检测，基于两个能见度计和FSO
2013 Conference on Microwave Techniques (COMITE) Pub Date : 2013-04-17 DOI: 10.1109/COMITE.2013.6545048
J. Pesek, O. Fiser
{"title":"Automatically low clouds or fog detection, based on two visibility meters and FSO","authors":"J. Pesek, O. Fiser","doi":"10.1109/COMITE.2013.6545048","DOIUrl":"https://doi.org/10.1109/COMITE.2013.6545048","url":null,"abstract":"This paper is focused on the FSO link attenuation under specific elevation angle. In these conditions fog or low clouds could cause different results in attenuation. Difference in these two kinds of attenuation is essential for attenuation modeling on FSO links. The decision which kind of attenuation on FSO link occurs is based on two visibility data and attenuation info on link. Modeling method is proposed in this paper. This method is using all previously described data. Model output is computed on theoretical level of edge between two visibilities. This level we take into consideration in attenuation data filtering.","PeriodicalId":372048,"journal":{"name":"2013 Conference on Microwave Techniques (COMITE)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134328799","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
Device for measurement of optical visibility 测量光学可见度的装置
2013 Conference on Microwave Techniques (COMITE) Pub Date : 2013-04-17 DOI: 10.1109/COMITE.2013.6545049
L. Rejfek, V. Brazda, O. Fiser
{"title":"Device for measurement of optical visibility","authors":"L. Rejfek, V. Brazda, O. Fiser","doi":"10.1109/COMITE.2013.6545049","DOIUrl":"https://doi.org/10.1109/COMITE.2013.6545049","url":null,"abstract":"This paper is about a proposed device for the optical visibility measurement. This device is usable for monitoring of the fog mightiness. The principle of device is based on comparison of attenuation on two optical links. The fog mightiness is determined by the using of the Beer-Lambert Law. The philosophy of electrical arrangement is also explained..","PeriodicalId":372048,"journal":{"name":"2013 Conference on Microwave Techniques (COMITE)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125470632","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
Diamond-shaped hole array as a fishnet metamaterial for negative refraction 菱形孔阵列作为负折射鱼网超材料
2013 Conference on Microwave Techniques (COMITE) Pub Date : 2013-04-17 DOI: 10.1109/COMITE.2013.6545062
C. Sabah, A. Yilmaz
{"title":"Diamond-shaped hole array as a fishnet metamaterial for negative refraction","authors":"C. Sabah, A. Yilmaz","doi":"10.1109/COMITE.2013.6545062","DOIUrl":"https://doi.org/10.1109/COMITE.2013.6545062","url":null,"abstract":"In this paper, a new design of hole array in a double-layer periodic arrangement is introduced and investigated both numerically and experimentally for the negative refractive index. The structure shows similar behavior to that of the corresponding fishnet metamaterials. The effective constitutive parameters are revealed by using retrieval procedure to verify the negative refraction nature of the proposed structure. A relatively high figure of merit (FOM = -Re (n)/Im (n) =70.05) is achieved at the K-band (18-26.5) frequency region. Finally, a rescaled design is presented to demonstrate the capability of structure for high frequency regime.","PeriodicalId":372048,"journal":{"name":"2013 Conference on Microwave Techniques (COMITE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130437263","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
Radar sidelobe canceller performance evaluation 雷达旁瓣消除器性能评价
2013 Conference on Microwave Techniques (COMITE) Pub Date : 2013-04-17 DOI: 10.1109/COMITE.2013.6545067
P. Sedivy
{"title":"Radar sidelobe canceller performance evaluation","authors":"P. Sedivy","doi":"10.1109/COMITE.2013.6545067","DOIUrl":"https://doi.org/10.1109/COMITE.2013.6545067","url":null,"abstract":"This paper presents evaluation of radar coherent sidelobe canceller (SLC) performance. It includes theoretical analysis of parameters limiting SLC sidelobe jamming signal cancellation, namely antenna mainlobe signal samples (ground clutter), adaptation ageing and reception of more signals than auxiliary channels. Results are documented on received signal records of two different radars. These two radars operate in VHF and X bands and utilize different antennas configuration, fixed multiple antennas covering whole horizon and a single auxiliary antenna moving along with the main radar antenna. The signals utilized for evaluation cover different types of jamming and background.","PeriodicalId":372048,"journal":{"name":"2013 Conference on Microwave Techniques (COMITE)","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130361024","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
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