2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)最新文献

{"title":"An improved polarization and DOA estimation algorithm","authors":"Shuai Liu, Fenggang Yan, M. Jin, X. Qiao","doi":"10.1109/ICMMT.2016.7762516","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7762516","url":null,"abstract":"In order to reduce the computation complexity during the multi-dimension iterative search of the MUSIC algorithm used to estimate the polarization and DOA of incident signal, an improved algorithm for estimating the polarization and DOA is proposed based on a polarization sensitive uniform array. Firstly, the polarization and DOA of the incident signal are coarsely estimated by a beam forming method based on FFT operation, then the traditional MUSIC algorithm is adapted to get the multi-dimension iterative search. By this method, the searching area for the multi-dimension full space is reduced to a smaller size, and the computation complexity is effectively reduced. The availability of the algorithm has been verified by the simulation.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"436 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134499198","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 a multilayer miniaturization rat-race","authors":"Huang Sen, Yang Yang, Z. Liang","doi":"10.1109/ICMMT.2016.7761699","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7761699","url":null,"abstract":"A compact microstrip rat-race hybrid with a wideband characteristic and a miniaturized area employing microstrip lines and strip lines circuit is reported in this paper. The proposed hybrid has been fabricated with a multilayer print circuit board technology to benefit from a high level of integration. The footprint of the proposed design occupies 50% of the area of the conventional similar design. Across the frequency bandwidth, the maximum amplitude unbalance is 0.5 dB, the isolation is better than 20 dB. Moreover, the circuit is planar, easy to application because of the sum port and difference port located on the same side. It is believed that this circuit has the best size reduction for wide-band rat-race couplers in open literature. The measured results show good agreement with simulation responses.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132230247","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":"Variable gain broadband low noise amplifier using tunable active inductor","authors":"Q. Deng, Wanrong Zhang, D. Jin, Hongyun Xie, Narisi Wang","doi":"10.1109/ICMMT.2016.7761694","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7761694","url":null,"abstract":"The variable gain broadband low noise amplifier (LNA) is presented in this paper using tunable active inductor (TAI). The active inductor is adopted instead of feedback spiral inductor in the intermediate amplification stage to achieve variable gain and extend bandwidth. Furthermore, a high gain push-pull inverter with the feedback resistor is employed to realize a good trade-off between wideband matching and low noise figure (NF) in the input stage. At output stage, a source follower structure is adopted to achieve good output impedance matching. The LNA is verified by Advanced Design System (ADS). The results show that over the range of 0.5 GHz-5.5 GHz, the gain can be tuned from 15.5 dB to 19.6 dB, input and output return loss are better than -10 dB, the NF is less than 5 dB, and the total chip size is reduced dramatically.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129163212","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 gear-type microstrip circular antenna for orbital angular momentum generation","authors":"Jia-jun Liang, Shengli Zhang, Wenhan Zhou","doi":"10.1109/ICMMT.2016.7762455","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7762455","url":null,"abstract":"This paper proposes a compact gear-type microstrip circular antenna (GTMCA) to generate orbital angular momentum (OAM) for wireless applications. The antenna consists of a microstrip circular loop which connected with eight rectangle patches, each rectangle patch rotating arrangement on a substrate in sequential with an equal inclination angle of 45°. The working principle of proposed antenna is analogous to that of a typical OAM-generating circular traveling-wave antenna. The analyzed and simulated results show that the gear-type microstrip circular antenna can generate OAM radio beam with topological charge l = -2, and it is a promising method for future OAM communication systems.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128270002","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":"Wide-angle scanning planar phased array antenna","authors":"S. Xiao, Chunmei Liu, Ren Wang, Bingzhong Wang","doi":"10.1109/ICMMT.2016.7762376","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7762376","url":null,"abstract":"Summary form only given. The phased array antenna has been widely used in many applications due to the high speed and the accuracy of scanning. Low profile and easily integrating are required under many situations. Wide-angle scanning is expected, especially in low elevation target searching. There are two main conditions in the implementation of the wide-angle scanning. On the one hand, the beam-width of microstrip antenna element is wide enough. On the other hand, the coupling between elements which will affect the impedance matching between the elements and ports should be properly controlled while the phased array antenna is scanning to the wide angles. Many improvements have been done to enlarge the scanning angle. There are four main methods to broaden the scanning coverage. First, enlarging the beam-width by using pattern reconfigurable antenna is widely used. There are usually three working modes, left mode, right mode and broadside mode, which are implemented by changing the working status of the PIN diodes or switches. The phased array which is composed of the pattern reconfigurable antenna can scan from -70 ° to 70 ° approximately [1]. Secondly, the antenna array based on the surface wave has wide-angle scanning characteristic. The surface wave is usually regarded as adverse effect which enlarges the coupling between elements. However, in the planar phased array, the surface wave can be used to enlarge the scanning range. The null radiation will be compensated by controlling the propagation of surface wave. The controlling of surface wave is achieved by leading the subwavelength structure like HIS which is similar with the photonic crystal. This kind of array antenna is able to scan from -85°to 85°[2]. Thirdly, according to the mirror theory, there are two types of antenna which can be used to realize the wide-angle scanning. One is putting the electric current parallel to the magnetic conductor closely (JpM). The magnetic conductor is realized by metamaterial consisting of the sub-wavelength structures. The another one is putting magnetic current parallel to the electric conductor closely (MpE). Based on the equivalent theory, the magnetic current can be obtained by grounding three sides of the microstrip antenna. The phased array antenna which is composed of the JpM or MpE antenna has excellent performance of scanning through the whole upper half space theoretically [3] [4]. Lastly, the algorithm based on the time reversal (TR) can take the coupling into account to optimize the wide-angle scanning array. The aperture distribution can be obtained adaptively [3]. In conclusion, a wide-angle scanning phased array can be obtained by utilizing the methods mentioned above. However, there are still many challenges in this field. More attention will be paid to the wide-band 2D wide-angle scanning phased array research.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"368 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133056761","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 simple waveguide OMT designed for millimeter wave applications","authors":"Yanfei Li","doi":"10.1109/ICMMT.2016.7762372","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7762372","url":null,"abstract":"In this paper, a simple orthomode transducer (OMT) operating at 45GHz band is presented. The proposed design avoids the use of septum, irises, pins, or small features. The OMT has few steps, low loss and good isolation, which showed both in the simulated and measured results.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"295 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114284166","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 bandgap reference circuit with temperature compensation","authors":"Wang Shaodong, W. Shuai","doi":"10.1109/ICMMT.2016.7761693","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7761693","url":null,"abstract":"These After analyzing the basic principle of bandgap reference(BGR), a differential pair of npn transistors with an emitter area ratio are used to produce a current which is proportional to absolute temperature (PTAT) in this paper. A relatively simple current compensation methods is illustrated to optimize the temperature characteristic of the BGR. This BGR has been verified in 0. 8um BiCMOS process library and achieves a temperature coefficient (TC) of 5. 98ppm/ °C with a temperature range from -50 °C to 150 °C at 5V power supply, the variation in the output of BGR is less than 1. 7mV with a power supply range from 3V to 10V, and a lower power dissipation.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123870933","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":"The design and matching of THz on-chip antenna in CMOS","authors":"Lei‐jun Xu, Fu-cheng Tong, Xue Bai, Han-ping Mao","doi":"10.1109/ICMMT.2016.7762499","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7762499","url":null,"abstract":"This paper presents a design of 484GHz on-chip antenna for THz direct detector in TSMC 0.18μm standard CMOS technology. The on-chip patch antenna fed by microstrip transmission lines is designed and simulated by Ansoft HFSS. To improve the power transfer efficiency, an open-stub matching network is inserted between the antenna and the detector. The peak gain of the antenna is 3 dBi, The bandwidth of the antenna is 85GHz, which corresponds to 28% relative bandwidth. The size of the chip is 1200μm×1000μm and the area of the patch antenna is 397μm×264μm.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125713129","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 a Q-band superheterodyne transceiver","authors":"Liang Ma, Zhe Chen, Jianyi Zhou","doi":"10.1109/ICMMT.2016.7762481","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7762481","url":null,"abstract":"The design of a Q-band superheterodyne transceiver for millimeter wave (mm Wave) communication is presented in this paper. The center frequency is 44.82 GHz with the channel bandwidth of 500 MHz. The overall system is divided into mm Wave frontend, the immediate frequency (IF) module and the local oscillator (LO) for IF. These three parts are implemented and tested respectively to ensure the performance. In order to evaluate the system performance in practical wireless communication, a testing platform constituted of a transmitter and a receiver is established. A 16QAM signal and a QPSK signal with the data rate of 400 Ms/s are transmitted by the transmitter, through 2-meter space attenuation, received and converted to baseband by the receiver. The demodulated baseband signals have the signal-to-noise ratio (SNR) of about 20 dB. The experimental results are satisfactory for such wide bandwidth and such high frequency.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129194147","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 linearity enhanced broadband Class-F power amplifier with high harmonic suppressed matching circuits for S-band applications","authors":"Jun-ming Lin, Zhi-hao Zhang, Y. Kai, Sizhen Li, Q. Cai, Jiajin Li, Gary Zhang","doi":"10.1109/ICMMT.2016.7761745","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7761745","url":null,"abstract":"A broadband power amplifier (PA) with linearity enhanced technology for S-band applications, is presented. For good linearity and high efficiency performance, a Class-F PA core with improved linearizing bias circuits is employed and integrated on a 1.1×1.1×0.82 mm3 die using an InGaP/GaAs HBT process. The linearizing bias circuit is composed of current mirrors, compensated inductor and capacitor, thus that the overall power gain is enhanced as well as the gain flatness. Furthermore, several LC serial harmonic traps are immersed into the broadband output matching circuit for good harmonic suppression performance. To demonstrate the feasibility of the concept, the PA was tested with a continuous wave (CW) signal and generated an output power of 34 dBm and achieved a PAE of 54.5% at 2GHz. In addition, excellent harmonic suppression levels of less than -57 dBc across the second to fifth harmonic are obtained.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126648419","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}