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Microwave and millimeter wave power amplifiers: Technology, applications, benchmarks, and future trends 微波和毫米波功率放大器:技术、应用、基准和未来趋势
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2015-11-01 DOI: 10.1109/COMCAS.2015.7360390
J. Komiak
{"title":"Microwave and millimeter wave power amplifiers: Technology, applications, benchmarks, and future trends","authors":"J. Komiak","doi":"10.1109/COMCAS.2015.7360390","DOIUrl":"https://doi.org/10.1109/COMCAS.2015.7360390","url":null,"abstract":"Solid State Transistor Device Technology is ubiquitous in communications, radar, electronic warfare, and instrumentation applications. This abridged presentation will cover Si LDMOS, PHEMT, InP HEMT/MHEMT and GaN HEMT. Content includes principles of operation, structures, characteristics, classes of operation, and device state of the art benchmarks. The art of power amplifier design is approached from a historical perspective. Power amplifiers utilizing these device technologies covering UHF through sub-millimeter wave are described including amplifier state of the art benchmarks. Future trends are highlighted and summarized.","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"194 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116346917","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
Continuous-time 2-D IIR+time-delay linear aperture arrays 连续二维IIR+延时线性孔径阵列
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2015-06-22 DOI: 10.1109/RWS.2015.7129736
A. Madanayake, C. Wijenayake, L. Belostotski
{"title":"Continuous-time 2-D IIR+time-delay linear aperture arrays","authors":"A. Madanayake, C. Wijenayake, L. Belostotski","doi":"10.1109/RWS.2015.7129736","DOIUrl":"https://doi.org/10.1109/RWS.2015.7129736","url":null,"abstract":"Application of continuous-time domain two-dimensional (2-D) infinite impulse response (IIR) filters to improve the spatial selectivity of conventional time-delay beamforming for linear arrays is discussed. The proposed technique mathematically modify the zero-manifold-only time-delay beamformer transfer function by introducing complex pole-manifolds at guaranteed stability. A continuous-time domain 2-D IIR filter is employed as a pre-filtering stage to an existing time-delay beamformer to achieve reduced side-lobe level for the same array size. Improved side lobe performance is verified in terms of frequency response, array pattern, and signal to interference ratio (SIR) simulations. For a 64 element array an SIR improvement of better than 2 dB is verified for varying main beam direction from 0° to 80°.","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126688569","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
High-resolution indoor positioning system using SDR modules 采用SDR模块的高分辨率室内定位系统
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2015-06-22 DOI: 10.1109/RWS.2015.7129765
Abdo Gaber, Samir Prcanovic, A. Omar
{"title":"High-resolution indoor positioning system using SDR modules","authors":"Abdo Gaber, Samir Prcanovic, A. Omar","doi":"10.1109/RWS.2015.7129765","DOIUrl":"https://doi.org/10.1109/RWS.2015.7129765","url":null,"abstract":"In this work, the problem of estimating the time difference of arrival (TDOA) associated with wideband orthogonal multi-carrier signals in multipath communication channels has been investigated using a single transmitter and a number of receiving base stations (BSs). Each BS has its own RF front-end including the local oscillator, filters, mixers, amplifiers, etc. Consequently, a precise estimation of time delays is not possible. Therefore, a technique to fully synchronize the BSs should be implemented. Using external reference to provide the clock frequency and sample time is not enough for a perfectly synchronized network. The phase uncertainties should be aligned by calibrating the estimated TDOAs. The software defined radio (SDR) modules are used to build a real system to measure the performance of the proposed wireless indoor positioning system using IEEE 802.11ac system parameters. Results show that an accuracy in the range of 3 cm can be achieved for 2 D wireless indoor positioning by using 20 MHz bandwidth.","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126880267","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
Stability of non-Foster circuits for broadband impedance matching of electrically small antennas 小型电天线宽带阻抗匹配非培养电路的稳定性
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2015-06-22 DOI: 10.1109/RWS.2015.7129764
A. Elfrgani, R. Rojas
{"title":"Stability of non-Foster circuits for broadband impedance matching of electrically small antennas","authors":"A. Elfrgani, R. Rojas","doi":"10.1109/RWS.2015.7129764","DOIUrl":"https://doi.org/10.1109/RWS.2015.7129764","url":null,"abstract":"Non-Foster circuits are promising for numerous microwave and antenna applications because they are not limited by the gain-bandwidth product. However, the stability of these circuits is a key issue for their design. In this paper we introduce a three-step scheme to systematically stabilize a non-Foster circuit (NFC) topology that can be used in numerous applications. To demonstrate the stabilization procedure, a NFC to match electrically small antenna is examined. The circuit is stabilized using conventional controllers. Measurements have been performed and results are showing improvement in the antenna gain up to 14 dB.","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126518209","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
Power synthesis at low frequencies in the sub-THz gap 次太赫兹间隙低频功率合成
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2015-06-22 DOI: 10.1109/RWS.2015.7129747
Jiaqi Zhao, Zhongbo Zhu, Bin Zhang, Dexin Ye, Changzhi Li, L. Ran
{"title":"Power synthesis at low frequencies in the sub-THz gap","authors":"Jiaqi Zhao, Zhongbo Zhu, Bin Zhang, Dexin Ye, Changzhi Li, L. Ran","doi":"10.1109/RWS.2015.7129747","DOIUrl":"https://doi.org/10.1109/RWS.2015.7129747","url":null,"abstract":"Terahertz (THz) technology is one of the research fronts in the microwave society. In this paper, we investigate the possibility of power synthesis at low-THz frequencies based on discrete THz sources. We show that by applying precision digital phase control, such a power synthesis can be achieved, overcoming the difficulty of phase alignment at these frequencies. For demonstration, we implement a 0.11-THz prototype system based on state of the art F-PLLs and IMPATT diodes. Experimental results validate the proposed approach. With increased wide digital bit width, our method can be effectively used at all sub- and low-THz frequencies in the THz gap, providing an alternative thought to achieve high-power THz waves.","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133308524","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
Miniaturized via-less ultra-wideband bandpass filter based on CRLH-TL unit cell 基于CRLH-TL单元的小型化无通过超宽带带通滤波器
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2015-06-22 DOI: 10.1109/RWS.2015.7129778
Abdullah Alburaikan, Mohammed Aqeeli, Xianjun Huang, Zhirun Hu
{"title":"Miniaturized via-less ultra-wideband bandpass filter based on CRLH-TL unit cell","authors":"Abdullah Alburaikan, Mohammed Aqeeli, Xianjun Huang, Zhirun Hu","doi":"10.1109/RWS.2015.7129778","DOIUrl":"https://doi.org/10.1109/RWS.2015.7129778","url":null,"abstract":"In this paper, a new via-less ultra-wideband (UWB) bandpass filter design based on a composite right/left-handed transmission line (CRLH-TL) unit cell is presented. Microstrip capacitive patch is used to provide virtual ground and replace the via in the conventional CRLH TL. Via fabrication complexity can be avoided for large-scale and cost-effective production by using microstrip patch. By cascading the interdigital coupled line with a low-pass filter (LPF) based on symmetrical split ring resonator (SSRR) defected ground structure (DGS), an UWB frequency response is achieved. SSRR DGS was used to obtain wider upper-stopband and sharp roll-off rate. The filter has compact size (15.6 × 13 mm2) and exhibits a rejection level greater than 20 dB at both upper and lower stopband. The filter has an insertion loss of 0.9 dB, a return loss better than 14 dB, and a fractional bandwidth of more than 100% at center frequency of 6.8 GHz.","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114605011","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
High frequency-selectivity impedance transformer 高频选择性阻抗变压器
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2015-06-22 DOI: 10.1109/RWS.2015.7129748
P. Kim, G. Chaudhary, Junsik Park, Y. Jeong, Jongsik Lim
{"title":"High frequency-selectivity impedance transformer","authors":"P. Kim, G. Chaudhary, Junsik Park, Y. Jeong, Jongsik Lim","doi":"10.1109/RWS.2015.7129748","DOIUrl":"https://doi.org/10.1109/RWS.2015.7129748","url":null,"abstract":"This paper presents the design of an impedance transformer (IT) with high selectivity and wide out-of-band suppression characteristics. The proposed IT provides two transmission poles in the passband and a sharp frequency selective characteristic. For validation, a 50-to-20 Ω IT has been implemented at a center frequency (f0) of 2.6 GHz. The measurement results show a return loss higher than 20 dB over the passband of 2.2-3 GHz and the insertion loss less than 0.4 dB over the same passband. The out-of-band suppression higher than 17 dB from DC to 1.85 GHz and higher that 11 dB from 3.5 GHz to 7.2 GHz are obtained.","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125750460","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
Two λ/2 dipole array coplanar feed wideband PCB antenna 双λ/2偶极子阵列共面馈电宽带PCB天线
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2015-06-22 DOI: 10.1109/RWS.2015.7129718
Q. Pan
{"title":"Two λ/2 dipole array coplanar feed wideband PCB antenna","authors":"Q. Pan","doi":"10.1109/RWS.2015.7129718","DOIUrl":"https://doi.org/10.1109/RWS.2015.7129718","url":null,"abstract":"A wideband omnidirectional antenna, designed for mounting on vehicles and other mobile devices, covers the 1700-2700 MHz band, i.e. 45% impedance bandwidth of 1000 MHz. It has an array of two in-phase planar λ/2 dipoles that are arranged side by side and fed by a coplanar waveguide. The dipole microstrip patches are printed on a 66 mm by 28 mm, 1.6 mm thick FR-4 PCB. The in-band antenna gain is about 2.6 dBi with nearly doughnut shape radiation patterns.","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127632818","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
On the double threshold energy detection-based spectrum sensing over κ-μ fading channel 基于双阈值能量检测的κ-μ衰落信道频谱感知研究
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2015-06-22 DOI: 10.1109/RWS.2015.7129775
Annita de Oliveira Petrocchi Ribas, U. Dias
{"title":"On the double threshold energy detection-based spectrum sensing over κ-μ fading channel","authors":"Annita de Oliveira Petrocchi Ribas, U. Dias","doi":"10.1109/RWS.2015.7129775","DOIUrl":"https://doi.org/10.1109/RWS.2015.7129775","url":null,"abstract":"This paper presents the performance analysis of spectrum sensing systems based on double threshold energy detection over κ-μ fading channels, which represents the small-scale variations of the fading signal under both light-of-sight and multipath scenarios. Receiver Operation Characteristics (ROC) are obtained regarding the double threshold scheme and comparisons are performed against the traditional single threshold method. Detection probabilities are derived and investigated for both low and high SNR cases considering different threshold values. Moreover, numerical results show interesting improvements in spectrum sensing systems with the proposed double threshold scheme. Finally, field trial measurements are used in order to investigate the usefulness of the double threshold scheme in energy detectionbased spectrum sensing networks under κ-μ fading scenarios.","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125403648","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 CPW-fed meandered-shaped monopole antenna with asymmetrical ground planes 具有不对称地平面的cpw馈电弯曲单极天线
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2015-06-22 DOI: 10.1109/RWS.2015.7129776
Dai-Heng Hsieh, Jhong-Wei Wu, Yu-Wei Cheng, Chien‐Jen Wang
{"title":"A CPW-fed meandered-shaped monopole antenna with asymmetrical ground planes","authors":"Dai-Heng Hsieh, Jhong-Wei Wu, Yu-Wei Cheng, Chien‐Jen Wang","doi":"10.1109/RWS.2015.7129776","DOIUrl":"https://doi.org/10.1109/RWS.2015.7129776","url":null,"abstract":"In this work, a new coplanar-waveguide (CPW)-fed monopole antenna with dual-band operation is proposed. The antenna is composed of a meandered monopole, an extended conductor line, and asymmetrical ground planes. Tuning geometrical structure of the ground plane of the CPW feeding structure excites additional resonant frequency bands, and thus enhances the impedance bandwidth. The measured impedance bandwidths, which is defined by -6 dB reflection coefficient, are 186 MHz (863 - 1049 MHz, 19.4%) at the lower resonant mode and 1320 MHz (1490 - 2810 MHz, 61.3%) at the upper mode. It can be observed that the impedance bandwidth of the proposed antenna covers the operated bandwidths of the commercial wireless communication systems, such as GSM 900, DCS, IMT-2000, UMTS, WLAN, LTE 2300, and LTE 2500.","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"132 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128198712","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
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