IEEE Microwave and Wireless Components Letters最新文献

{"title":"A Wideband Circulator Leakage Canceler for Retro-Directive RF System","authors":"T.‐B. Ngo, Quang-Huy Do, Sangwoog Yoon","doi":"10.1109/LMWC.2022.3170590","DOIUrl":"https://doi.org/10.1109/LMWC.2022.3170590","url":null,"abstract":"This letter presents a wideband circulator leakage canceler (CLC) IC using a negative capacitance (NCAP). It enhances a conventional circulator with a wider bandwidth and high isolation for a full-duplex retro-directive short-range wireless power transfer (WPT) application. The proposed CLC consists of a directional coupler (DC), a hybrid coupler, and a low-pass filter network (LPFN) integrated with NCAP, which shows a considerable capability of suppressing the leakage power signal from transmitter (TX) output to receiver (RX) input. The CLC was fully implemented in the Samsung LR6LP 65-nm RF CMOS process and occupied the size of 2.1 mm $times0.89$ mm. The measurement of IC with a commercial circulator shows an average cancelation of 19 dB over the range of 225 MHz from 2.31 to 2.535 GHz. The input P1dB in band was measured at 16 dBm while the noise figure (NF) of antenna-receiver (ANT-RX) path increased by 5.2 dB at 2.5 GHz.","PeriodicalId":13130,"journal":{"name":"IEEE Microwave and Wireless Components Letters","volume":"32 1","pages":"1211-1214"},"PeriodicalIF":3.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44707803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"RF Characterization of 3-D-Printed Tunable Resonators on a Composite Substrate Infused With Magnetic Nanoparticles","authors":"Y. Malallah, K. Alhassoon, Gurveer Bhuta, A. Daryoush","doi":"10.1109/LMWC.2022.3175022","DOIUrl":"https://doi.org/10.1109/LMWC.2022.3175022","url":null,"abstract":"Three-dimensional additive manufacturing methods are being continuously improved with great interest in low cost and small size radio frequency (RF) circuits. Recent developments in magnetically tunable microwave/RF components are attractive for externally controlled circuits without influencing RF characteristics. This letter focuses on additive manufacturing of ferroic nanomaterials along with their implementation in frequency-tuned RF circuits using an applied magnetic field. Extraction of the additively manufactured magneto-dielectric composite was performed at <inline-formula> <tex-math notation=\"LaTeX\">$S$ </tex-math></inline-formula>-band frequencies using least squares curve fitting of measured and simulated <inline-formula> <tex-math notation=\"LaTeX\">$S$ </tex-math></inline-formula>-parameters for annular ring resonator modes. Polylactide (PLA) material used for additive manufacturing was extracted to have <inline-formula> <tex-math notation=\"LaTeX\">$varepsilon = 1.80 - j0.031$ </tex-math></inline-formula>. Meanwhile, magnetic CoFe2O4 with 45-nm average nanoparticles size was extracted to have <inline-formula> <tex-math notation=\"LaTeX\">$varepsilon $ </tex-math></inline-formula> = <inline-formula> <tex-math notation=\"LaTeX\">$3.10 - j0.084$ </tex-math></inline-formula> and <inline-formula> <tex-math notation=\"LaTeX\">$mu $ </tex-math></inline-formula> = <inline-formula> <tex-math notation=\"LaTeX\">$1.70 - j0.145$ </tex-math></inline-formula>; while Protopasta’s magnetic filament had <inline-formula> <tex-math notation=\"LaTeX\">$varepsilon $ </tex-math></inline-formula> = <inline-formula> <tex-math notation=\"LaTeX\">$1.80 - j0.031$ </tex-math></inline-formula> and <inline-formula> <tex-math notation=\"LaTeX\">$mu $ </tex-math></inline-formula> = <inline-formula> <tex-math notation=\"LaTeX\">$2.19 - j0.569$ </tex-math></inline-formula>. The 3-D printed magnetic composite is used to design tunable annular ring resonators at 2.4 GHz with up to 38-MHz frequency tuning for an applied 1-kG magnetic field.","PeriodicalId":13130,"journal":{"name":"IEEE Microwave and Wireless Components Letters","volume":"32 1","pages":"1175-1178"},"PeriodicalIF":3.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47493744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Wideband Microstrip to 3-D-Printed Air-Filled Waveguide Transition Using a Radiation Probe","authors":"I. Piekarz, J. Sorocki, N. Delmonte, L. Silvestri, S. Marconi, G. Alaimo, F. Auricchio, M. Bozzi","doi":"10.1109/LMWC.2022.3173407","DOIUrl":"https://doi.org/10.1109/LMWC.2022.3173407","url":null,"abstract":"In this letter, a novel wideband microstrip to additively fabricated waveguide transition is presented. The proposed design takes advantage of the flexibility of 3-D printing to realize a highly integrated transition from the microstrip line on a printed circuit board (PCB) to an air-filled waveguide using an additively manufactured radiating probe. The idea is experimentally verified by the realization of an exemplary transition working within the X-band at <inline-formula> <tex-math notation=\"LaTeX\">$f_{0} =10.5$ </tex-math></inline-formula> GHz. The measured performance of the back-to-back transition proves its usefulness and possibility of utilization in highly integrated PCB-waveguide circuits. A PolyJet printing technology with copper electroplating was used in combination with PCB on microwave grade laminate. A bandwidth of <inline-formula> <tex-math notation=\"LaTeX\">$f_{H}/f_{L} =1.8$ </tex-math></inline-formula> was obtained with the impedance match better than 9.5 dB and in-band insertion loss per transition below 1.1 dB.","PeriodicalId":13130,"journal":{"name":"IEEE Microwave and Wireless Components Letters","volume":"32 1","pages":"1179-1182"},"PeriodicalIF":3.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42550013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Improved Through-Only De-Embedding Method for 110-GHz On-Wafer RF Device Characterization","authors":"Ruitao Wang, Chenguang Li, Yan Wang","doi":"10.1109/LMWC.2022.3173970","DOIUrl":"https://doi.org/10.1109/LMWC.2022.3173970","url":null,"abstract":"In this letter, an improved through-only de-embedding method up to 110 GHz without additional dummy structure is developed and implemented. The highlight of this method is that the distributed effect of the metal interconnections between the pad and the intrinsic device is elaborately considered instead of simply modeled as a lumped constant circuit, and the optimal length of the transmission line is carefully derived. Based on this, the parasitics are removed by calculating the ABCD matrices. On-wafer RF passive devices, including T-coil and capacitor, are fabricated on 28-nm CMOS technology to verify the accuracy of the proposed method from 10 to 110 GHz. The measurement results after de-embedding by the proposed method are in good agreement with the electromagnetic simulation results of the intrinsic devices, which demonstrates that the proposed method has a better performance than conventional methods.","PeriodicalId":13130,"journal":{"name":"IEEE Microwave and Wireless Components Letters","volume":"32 1","pages":"1219-1222"},"PeriodicalIF":3.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46146168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hybrid Digital Pre-Distortion for Active Phased Arrays Subject to Varied Power and Steering Angle","authors":"Yunfeng Li, Yonghui Huang, Qingyue Chen, Feridoon Jalili, Kasper B. Olesen, J. G. Brask, Lauge F. Dyring, G. F. Pedersen, M. Shen","doi":"10.1109/LMWC.2022.3172215","DOIUrl":"https://doi.org/10.1109/LMWC.2022.3172215","url":null,"abstract":"This letter proposes a memory polynomial (MPM)-aided deep neural network (DNN) digital pre-distortion (MaD-DPD) method for active phased arrays (APAs) subject to varied input power and steering angle. This has been challenging for traditional array linearization methods using either MPM or DNN, which rely on the in-phase and quadrature-phase (I/Q) signal as input and output to derive model parameters. In comparison, the proposed method actively incorporates MPM and DNNs to achieve linearization. The model uses only two varied APA state parameters (input power and steering angle) as input and the MPM coefficients as regression target, eliminating the need for model parameter updating. The MaD-DPD method is validated using a four-by-four antenna array at 28 GHz with 21 input power levels and a broad range of steering angles from −78° to 78°, improving up to 13.16% in error vector magnitude (EVM) and 18.21 dBc in adjacent channel leakage ratio (ACLR).","PeriodicalId":13130,"journal":{"name":"IEEE Microwave and Wireless Components Letters","volume":"32 1","pages":"1243-1246"},"PeriodicalIF":3.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45604721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and Optimization of Wireless Charging Drawer Coil for Smart Garments","authors":"Chin-Wei Chang, P. Riehl, Jenshan Lin","doi":"10.1109/LMWC.2022.3172407","DOIUrl":"https://doi.org/10.1109/LMWC.2022.3172407","url":null,"abstract":"In this letter, wireless charging chests suitable for smart garments are analyzed and optimized. The coil structure is optimized to generate a uniform magnetic field in a variety of drawer sizes. With the hybrid Helmholtz–solenoid coil structure, the variation of coupling factor is reduced from 78.2% to 26.4% as compared with solenoidal coil. Two design approaches for multidrawer chest are examined. In the first approach, the coils are optimized for individual drawers. In the second approach, the coils are optimized by considering the entire drawer chest. The measurement results show that the second approach further reduces the variation of charging current of receiver coils placed at different locations.","PeriodicalId":13130,"journal":{"name":"IEEE Microwave and Wireless Components Letters","volume":"32 1","pages":"1227-1230"},"PeriodicalIF":3.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48460155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multiport Dual-Functional Circuits With Filtering and Power Dividing Operations Using Single Dielectric Resonator","authors":"Jie Ge, H. Tang, Cheng Shao, Hai-Feng Wang, Ling-Ling Yang","doi":"10.1109/LMWC.2022.3177358","DOIUrl":"https://doi.org/10.1109/LMWC.2022.3177358","url":null,"abstract":"A novel concept for utilizing a single dielectric resonator (DR) to fulfill a dual-mode bandpass filter (BPF) and a power divider (PD) simultaneously is proposed. A stepped rectangular DR is employed and two of its modes are, respectively, applied to the two functions. The fields of the modes are orthogonal and their frequencies can be flexibly controlled so that the BPF and PD are able to operate with high isolation and adjustable frequency bands. In the BPF part, one of the shielding cavity modes is also introduced to form a dual-mode characteristic. According to the symmetry of the electromagnetic fields, the PD part is designed in three forms: 1-to-2 PD with in-phase outputs, 1-to-2 PD with antiphase outputs, and 1-to-4 PD. As a result, three dual-functional combinations are achieved. For demonstration, the proposed dual-function applications sharing the common DR in high circuit integration are implemented and measured.","PeriodicalId":13130,"journal":{"name":"IEEE Microwave and Wireless Components Letters","volume":"32 1","pages":"1167-1170"},"PeriodicalIF":3.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43448759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Efficient Model of the Transmission Lines Excited by the External Nonuniform Transient Electromagnetic Field Using the MPM","authors":"Jun Guo, Yan-zhao Xie","doi":"10.1109/LMWC.2022.3171696","DOIUrl":"https://doi.org/10.1109/LMWC.2022.3171696","url":null,"abstract":"This letter proposes a modeling approach to handle nonuniform transient electromagnetic field coupling to transmission lines (TLs). In this approach, the matrix pencil method is applied to express the complex-valued external electric field at the horizontal direction along the TL by the first order of the exponential function in the frequency domain. The fitting procedure of the MPM only contains several matrix computation steps and does not need the initial value or any searching process, which leads to a significantly higher fitting efficiency. Moreover, the fitted results are formed with the first order of the exponential function, which ensures that the analytical solution of the TL equation can be formulated and thus has a high calculation efficiency. The proposed method was validated experimentally using a large scale of radiated wave simulator.","PeriodicalId":13130,"journal":{"name":"IEEE Microwave and Wireless Components Letters","volume":"32 1","pages":"1147-1150"},"PeriodicalIF":3.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44516372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A D-Band Reflective-Type Phase Shifter Using a SiGe PIN Diode Resonant Load","authors":"Sunil G. Rao, J. Cressler","doi":"10.1109/LMWC.2022.3175450","DOIUrl":"https://doi.org/10.1109/LMWC.2022.3175450","url":null,"abstract":"This work presents a D-band phase shifter which utilizes a one-bit phase inverter (PI), followed by two cascaded reflective-type phase shifters (RTPSs). The PI uses two identical cascode amplifiers and a triaxial balun for compact form factor and to provide identical loading in both states. The RTPSs use SiGe PIN diodes for their resonant loads due to their naturally high-Q and tuning range. The phase shifter is implemented in a 90-nm SiGe BiCMOS technology platform, and achieves insertion loss < 5.5 dB with a 360° phase shift range, for frequencies up to 145 GHz. By using dual voltage control, the insertion loss variation is kept within ±0.9 dB by selecting the appropriate points. This phase shifter achieves competitive performance in terms of insertion loss, power consumption, and amplitude error while operating over a wide bandwidth.","PeriodicalId":13130,"journal":{"name":"IEEE Microwave and Wireless Components Letters","volume":"32 1","pages":"1191-1194"},"PeriodicalIF":3.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49026488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Fully Packaged Bandpass Filter on Stripline Patch Resonator With Wide Upper Stopband","authors":"Feng Huang, Lei Zhu, Xianqin Hu","doi":"10.1109/LMWC.2022.3176976","DOIUrl":"https://doi.org/10.1109/LMWC.2022.3176976","url":null,"abstract":"In this letter, a fully packaged dual-mode bandpass filter (BPF) with wide upper stopband is presented. The stripline patch resonator loaded by the shorting slabs is adopted to achieve the dual-mode bandpass performance under operation of TM00 mode and TM01 mode. To remove other harmonic resonances of the stripline patch resonator, a common-mode double-point inset-feeding technique is proposed at the very beginning to prevent the excitation of high-order modes. To verify the design concept, a prototype packaged dual-mode BPF working at 4.0 GHz with the fractional bandwidth (FBW) of 8.2% is designed and fabricated using the multilayer liquid crystal polymer (LCP) circuit technology. Final results theoretically demonstrate and experimentally confirm that a wide stopband rejection up to $4.3f_{0}$ is obtained, well verifying the feeding method.","PeriodicalId":13130,"journal":{"name":"IEEE Microwave and Wireless Components Letters","volume":"32 1","pages":"1155-1158"},"PeriodicalIF":3.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43816419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}