{"title":"A bow-tie antenna on the extended hemispherical lens for THz frequency","authors":"Jialin Liu, Qiulin Huang, Xiao-wei Shi","doi":"10.1109/ICMMT.2016.7762413","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7762413","url":null,"abstract":"Nowadays, the band resources are increasingly scarce, showing a tendency toward situation, terahertz band gradually attracts people's discussion. However, it work in the high frequency, relatively wavelength is small and electromagnetic wave loss is very large, design and performance of the antenna structure must has some special requirements. In this article, we propose an antenna working in the terahertz band, which is bow-tie antenna coupled through an extended hemispherical lens to obtain high gain. This antenna is designed at 300GHz, and changed the structure to get the wider operating bandwidth which can reach 38%. By studying the size of expanded hemispheric lens, the antenna has a good directivity, which can meet the design requirements in terahertz band.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127538341","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}
{"title":"FPGA implementation of sideband distortion suppression for millimeter wave transmitter at Q-band","authors":"Cong-Le Lu, Chao Yu, Xiaowei Zhu","doi":"10.1109/ICMMT.2016.7761677","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7761677","url":null,"abstract":"In this paper, the channelized sideband distortion suppression model was implemented successfully on Virtex 6 FPGA. The hardware implementation was achieved through envelope solution, FIR filter, phase shift and memory effect module. The satisfactory results show that the FPGA implementation method is a promising candidate for future 5G application because of the method's low-cost and low-complexity.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129968099","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}
{"title":"A 2–10GHz ultra-wideband high gain negative feedback low-noise amplifier","authors":"Peigen Zhou, Daxu Zhang, Jixin Chen","doi":"10.1109/ICMMT.2016.7761676","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7761676","url":null,"abstract":"This paper presents the design and implementation of a miniaturized ultra-wideband low noise amplifier (LNA) suitable for RF system. The LNA is based on negative feedback topology and reduces the size of the circuit greatly. By using a 4.7 Ω resistance in series with the drain of each transistor, the design yields excellent stability at a wide frequency band. The LNA is fabricated on a Rogers RO4003C board with size of 91.5mm*25mm. Over the wide operating frequency band of 2-10GHz, the measured results demonstrate an excellent performance with the gain of higher than 34dB, in-band flatness of less than 3.37dB, S11 of less than -10.95dB, S22 of less than -11.04dB, a low noise figure of less than 3.49dB and a low power consumption.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129030458","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}
{"title":"Direct synthesis method of multi-passband filters","authors":"Qi Nan, Zhang Rui-qi, Li Sheng-xian","doi":"10.1109/ICMMT.2016.7761751","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7761751","url":null,"abstract":"A direct synthesis method of microwave multi-passband filters is discussed in this paper. Different from the classical synthesis technology, this method does not require the frequency transformation or polynomial optimization, directly and separately synthesizes generalized Chebyshev characteristic function of each passband in band-pass domain, the final multiband filtering function obtained, which apply to wideband condition and bandwidth of each passband can be easily controlled. The admittance matrix derived from the filtering function is physically meaningful and examples show a good agreement.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130512251","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}
{"title":"Wideband wide flared corrugated horns designed for the Square Kilometre Array","authors":"Yang Wu, Lei Xie, Jianzhai Zhou, B. Du","doi":"10.1109/ICMMT.2016.7761747","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7761747","url":null,"abstract":"This paper presents the development of a wideband feed for the Square Kilometre Array, covering 2.8-5.18 GHz. At the start, a wide flared horn is developed based on an existed design and the results are not satisfactory. Hence this design is optimized for compact size and better performance at higher frequency. The simulation results show the redesigned horn with hybrid slots achieves excellent impedance and radiation performance. The simulated aperture efficiency is above 86% with shaped SKA dish optics, and the required sensitivity is satisfied over the operating frequency band.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125570237","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}
Weidong Ma, Guangming Wang, B. Zong, Y. Zhuang, Xiao-Fei Zhang
{"title":"Mechanically reconfigurable antenna based on novel metasurface for frequency tuning-range improvement","authors":"Weidong Ma, Guangming Wang, B. Zong, Y. Zhuang, Xiao-Fei Zhang","doi":"10.1109/ICMMT.2016.7762390","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7762390","url":null,"abstract":"A frequency-reconfigurable antenna with mechanical tuning, providing the frequency tuning from 2.51 to 3.70 GHz, is presented. The design comprises a slot antenna and a novel metasurface (MS) with isosceles triangular-loop unit cells. Through pivoting of the novel MS, this antenna achieved good performance in the frequency reconfiguration. Moreover, the reconfigurable antenna have the advantages of compact structure with a diameter of 50mm and a height of 3mm, and good radiation efficiency of up to 90% across the tuning-range. Measured and simulated results testify the wide frequency tunablity of the reconfigurable antenna, and demonstrate it is suitable for advanced multi-standard wireless communication applications.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126425633","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}
{"title":"Zero-bias model and compensation of VNA intermediate frequency system","authors":"Yuan Guoping, Liu Dan, Yang Mingfei","doi":"10.1109/ICMMT.2016.7761740","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7761740","url":null,"abstract":"A new zero-bias model and compensation procedure for the intermediate frequency (IF) signal processing system of the vector network analyzer (VNA) based on neural network is proposed in this paper. This procedure can be used to four IF channels with different conditions. The structure of the zero-bias compensation procedure in one port is given first. Then for four different channels, the same method is applied. The zero-bias is modeled by radial basis function neural network and the IF signal is compensated via the analysis based on the model. Finally, the proposed method is tested via AV3672 series VNA and the experiment shows that the method can well eliminate the zero-bias of the IF signal, and it is effective for zero-bias model and compensation.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116040455","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}
{"title":"A design of C-band wideband conformal omnidirectional antenna","authors":"Qihong He","doi":"10.1109/ICMMT.2016.7762416","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7762416","url":null,"abstract":"The technique of short-circuiting posts, loaded disk and ground plane transformation are adopted in the antenna design. The effects of key parameters on impedance matching are analyzed in detail. The simulated and measured results show that the proposed antenna can work in a wide band. The relative bandwidth with S11 ≤ -10dB reaches 47.1%, covering from 4.7GHz to 7.6GHz. The radiation pattern is similar to a monopole antenna within the bandwidth. The proposed antenna can be flush-mounted on a planar surface and therefore is a candidate of a conformal omnidirectional antenna.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115280837","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}
Jie Wang, Haiyan Lu, Lingling Sun, Jun Liu, Hai-jun Gao, Ming-zhu Zhou
{"title":"Analytical surface potential based model for AlxGa1−xN/AlyGa1−yN/GaN DH HEMTs","authors":"Jie Wang, Haiyan Lu, Lingling Sun, Jun Liu, Hai-jun Gao, Ming-zhu Zhou","doi":"10.1109/ICMMT.2016.7761832","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7761832","url":null,"abstract":"We present an accurate and robust surface potential based compact model for AlxGa1-xN/AlyGa1-yN/GaN double hetero-junction high electron mobility transistors (DH HEMTs). The effects of band on the carrier distribution and polarization charges are studied in our model, which are characterized by the surface potential equation. An accurate analytical surface potential calculation is used to develop the current and charge model. The model reproduces the camel hump phenomenon of the DH HEMT device and is verified against TCAD simulations under a wide range of bias conditions.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116781804","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}
{"title":"Design of an ultra-wideband bow-tie antenna fed by a hybrid ring","authors":"F. Lina, Chen Xu, Yang Weijie","doi":"10.1109/ICMMT.2016.7762410","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7762410","url":null,"abstract":"This paper introduced a miniaturization fan-shaped bow-tie antenna which fed by the cohesive micro-strip hybrid ring. And a backed reflection cavity is used to realize good unidirectional performance. The antenna is fabricated on F4B high-frequency board with the dielectric constant of 2.65. The measured results show that return loss (S11) is lower than -10dB in the operation frequency band of 6GHz to 9GHz, and the directivity radiation pattern in E plane and H plane are in good agreement with the simulation results. The design fully meets the requirements of the ultra-wideband antenna for the close range ultra-wideband radar.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131322826","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}