Pub Date : 2017-05-24DOI: 10.1109/GSMM.2017.7970296
W. Lai, S. Jang, Rei-Ru Liu, Ho‐Chang Lee, Yen-Jung Su
This paper present a low power voltage control oscillator (VCO) and implemented in tsmc 0.18 μm BiCMOS process, which using current-reuse technique to support low power consumption from supply voltage 1.3V. The proposed circuit measured as tuning range of 9.02∼10.46 GHz at power consumption is 2.6 mW. The measured phase noise is −111.2 dBc/Hz at offsets 1 MHz of center frequency 10.27 GHz. The chip size is 0.467 × 0.789 mm2 for millimeter-wave active devices application.
{"title":"Low power voltage control oscillator for wireless communications application","authors":"W. Lai, S. Jang, Rei-Ru Liu, Ho‐Chang Lee, Yen-Jung Su","doi":"10.1109/GSMM.2017.7970296","DOIUrl":"https://doi.org/10.1109/GSMM.2017.7970296","url":null,"abstract":"This paper present a low power voltage control oscillator (VCO) and implemented in tsmc 0.18 μm BiCMOS process, which using current-reuse technique to support low power consumption from supply voltage 1.3V. The proposed circuit measured as tuning range of 9.02∼10.46 GHz at power consumption is 2.6 mW. The measured phase noise is −111.2 dBc/Hz at offsets 1 MHz of center frequency 10.27 GHz. The chip size is 0.467 × 0.789 mm2 for millimeter-wave active devices application.","PeriodicalId":414423,"journal":{"name":"2017 10th Global Symposium on Millimeter-Waves","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122453850","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}
Pub Date : 2017-05-24DOI: 10.1109/GSMM.2017.7970330
Jixin Chen, Weiquan Lin, P. Yan, Junfeng Xu, Debin Hou, W. Hong
Millimeter wave compact RF transmitter and receiver for 5G communication system are designed in this paper, which could be typically applied in massive MIMO system of 16 channels. The transmitter and receiver are designed using multilayered structure and highly-integrated chips to decrease the module size. The antenna feeding transition structure are designed using electromagnetic field simulation software, and integrated in RF module. The size of fabricated RF modules is 2cm–2cm. IF and power supply circuits are also designed separately for both of them to support the RF array with 16 channels configuration. Performance of single channel transmitter and receiver are measured which could be applied in Q-band millimeter wave massive MIMO system.
{"title":"Design of mm-Wave transmitter and receiver for 5G","authors":"Jixin Chen, Weiquan Lin, P. Yan, Junfeng Xu, Debin Hou, W. Hong","doi":"10.1109/GSMM.2017.7970330","DOIUrl":"https://doi.org/10.1109/GSMM.2017.7970330","url":null,"abstract":"Millimeter wave compact RF transmitter and receiver for 5G communication system are designed in this paper, which could be typically applied in massive MIMO system of 16 channels. The transmitter and receiver are designed using multilayered structure and highly-integrated chips to decrease the module size. The antenna feeding transition structure are designed using electromagnetic field simulation software, and integrated in RF module. The size of fabricated RF modules is 2cm–2cm. IF and power supply circuits are also designed separately for both of them to support the RF array with 16 channels configuration. Performance of single channel transmitter and receiver are measured which could be applied in Q-band millimeter wave massive MIMO system.","PeriodicalId":414423,"journal":{"name":"2017 10th Global Symposium on Millimeter-Waves","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126601242","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}
Pub Date : 2017-05-24DOI: 10.1109/GSMM.2017.7970299
S. Ta, I. Park
This paper presents a high-gain low-sidelobe two-dimensional cavity-backed angled-dipole array antenna with 64 antennas in an 8 × 8 square grid for 28-GHz applications. This antenna yields broadband characteristics and similar 3-dB beamwidths in the E- and H-planes, and it is chosen for stable operation in a two-dimensional array environment. A nonuniform power distribution is used to excite the array to achieve a low sidelobe level (SLL) in the azimuth planes. The proposed array showed similar scanning performance in the E-and H-planes. It achieved gain exceeding 20.0 dBi and SLL below −18.5 dB for scanning angles up to 40°.
{"title":"Two-dimensional cavity-backed angled-dipole array antenna for 28-GHz band","authors":"S. Ta, I. Park","doi":"10.1109/GSMM.2017.7970299","DOIUrl":"https://doi.org/10.1109/GSMM.2017.7970299","url":null,"abstract":"This paper presents a high-gain low-sidelobe two-dimensional cavity-backed angled-dipole array antenna with 64 antennas in an 8 × 8 square grid for 28-GHz applications. This antenna yields broadband characteristics and similar 3-dB beamwidths in the E- and H-planes, and it is chosen for stable operation in a two-dimensional array environment. A nonuniform power distribution is used to excite the array to achieve a low sidelobe level (SLL) in the azimuth planes. The proposed array showed similar scanning performance in the E-and H-planes. It achieved gain exceeding 20.0 dBi and SLL below −18.5 dB for scanning angles up to 40°.","PeriodicalId":414423,"journal":{"name":"2017 10th Global Symposium on Millimeter-Waves","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124328971","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}
Pub Date : 2017-05-24DOI: 10.1109/GSMM.2017.7970286
Zhi-Xia Du, Xiu Yin Zhang
Wireless power transmission (WPT) is a promising technology that can be employed as an alternative power source for electronic circuits. Actually, the receiving power generally cannot remain constant due to different transmission environment and distance. The variation of the input power levels leads to the diode impedance change, and then causes impedance mismatch and rectifier performance degradation. In this work, two kinds of network have been placed between the input port and the rectifiers, extending the operating power range. Firstly, a branch-line coupler is used as a power recycling network to improve the matching performance and conversion efficiency when the input power varies. In this case, two types of rectifiers can be designed by using the branch-line coupler. Both the two rectifiers include two identical sub-rectifying circuits and a branch-line coupler. The isolation port of the coupler in the proposed Type I rectifier is directly connected to the ground, in order to re-inject the reflected power back to the sub-rectifiers for recycling. As for that in the proposed Type II rectifier, it is connected to the third rectifier, which can rectify the reflected power. Thereby, the power reflected from the two sub-rectifiers due to impedance mismatch can be reused by the two types of proposed rectifier. The RF-dc conversion efficiency can be improved and the operating power range for high efficiency can be widened. Moreover, a complex impedance compression network (ICN) is also proposed and applied to the design of rectifying circuits for extending operating power ranges. The proposed ICN is connected to the microwave input of two parallel sub-rectifiers. It reduces the variation range of the rectifier input impedance which changes with input power. Thus the loss due to impedance mismatch is therefore reduced and subsequently high efficiency can be obtained over a wider input power range. Compared with the resistance compression network (RCN), the proposed ICN is able to compress the variation range of the complex impedance rather than that of the resistive load, featuring design flexibility. For demonstration, the ICN is applied to the design of single-band and dual-band microwave rectifiers. Theoretical analysis and performance comparison are carried out. The results indicate that the proposed topologies are able to realize high efficiency with wide input power dynamic range.
{"title":"High-efficiency microwave rectifier with wide operating power range","authors":"Zhi-Xia Du, Xiu Yin Zhang","doi":"10.1109/GSMM.2017.7970286","DOIUrl":"https://doi.org/10.1109/GSMM.2017.7970286","url":null,"abstract":"Wireless power transmission (WPT) is a promising technology that can be employed as an alternative power source for electronic circuits. Actually, the receiving power generally cannot remain constant due to different transmission environment and distance. The variation of the input power levels leads to the diode impedance change, and then causes impedance mismatch and rectifier performance degradation. In this work, two kinds of network have been placed between the input port and the rectifiers, extending the operating power range. Firstly, a branch-line coupler is used as a power recycling network to improve the matching performance and conversion efficiency when the input power varies. In this case, two types of rectifiers can be designed by using the branch-line coupler. Both the two rectifiers include two identical sub-rectifying circuits and a branch-line coupler. The isolation port of the coupler in the proposed Type I rectifier is directly connected to the ground, in order to re-inject the reflected power back to the sub-rectifiers for recycling. As for that in the proposed Type II rectifier, it is connected to the third rectifier, which can rectify the reflected power. Thereby, the power reflected from the two sub-rectifiers due to impedance mismatch can be reused by the two types of proposed rectifier. The RF-dc conversion efficiency can be improved and the operating power range for high efficiency can be widened. Moreover, a complex impedance compression network (ICN) is also proposed and applied to the design of rectifying circuits for extending operating power ranges. The proposed ICN is connected to the microwave input of two parallel sub-rectifiers. It reduces the variation range of the rectifier input impedance which changes with input power. Thus the loss due to impedance mismatch is therefore reduced and subsequently high efficiency can be obtained over a wider input power range. Compared with the resistance compression network (RCN), the proposed ICN is able to compress the variation range of the complex impedance rather than that of the resistive load, featuring design flexibility. For demonstration, the ICN is applied to the design of single-band and dual-band microwave rectifiers. Theoretical analysis and performance comparison are carried out. The results indicate that the proposed topologies are able to realize high efficiency with wide input power dynamic range.","PeriodicalId":414423,"journal":{"name":"2017 10th Global Symposium on Millimeter-Waves","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121764186","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}
Pub Date : 2017-05-24DOI: 10.1109/GSMM.2017.7970293
Xiyao Wang, W. Che, Wanchen Yang, W. Feng
A self-interference cancellation (SIC) antenna pair for full duplex communication is proposed. It consists of two aperture-coupled patch antennas with orthogonal linear polarizations and an auxiliary port loaded with a proper reflective termination. The auxiliary port introduces an indirect coupling path and the coupling signal is reflected to RX port and superposed with the direct coupling to make a cancellation. As a result, the isolation between two antennas is improved from 25dB to more than 40dB over the entire working band of 2.35–2.55GHz, while, it has little influence on return losses and radiation patterns of the two antennas. The performances indicate the proposed antenna pair a good candidate for full duplex communication applications.
{"title":"Antenna pair with self-interference cancellation for full duplex communication","authors":"Xiyao Wang, W. Che, Wanchen Yang, W. Feng","doi":"10.1109/GSMM.2017.7970293","DOIUrl":"https://doi.org/10.1109/GSMM.2017.7970293","url":null,"abstract":"A self-interference cancellation (SIC) antenna pair for full duplex communication is proposed. It consists of two aperture-coupled patch antennas with orthogonal linear polarizations and an auxiliary port loaded with a proper reflective termination. The auxiliary port introduces an indirect coupling path and the coupling signal is reflected to RX port and superposed with the direct coupling to make a cancellation. As a result, the isolation between two antennas is improved from 25dB to more than 40dB over the entire working band of 2.35–2.55GHz, while, it has little influence on return losses and radiation patterns of the two antennas. The performances indicate the proposed antenna pair a good candidate for full duplex communication applications.","PeriodicalId":414423,"journal":{"name":"2017 10th Global Symposium on Millimeter-Waves","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131446719","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}
Pub Date : 2017-05-24DOI: 10.1109/GSMM.2017.7970275
Tianwu Li, Da Li, E. Li
A novel frequency selective surface structure (FSSs) with high selectivity and excellent angular stability is proposed in this paper. To improve the performance of the FSS especially in angular stability, the coupling of capacitive surface and inductive surface is employed to realize the miniaturization of the structural unit around 0.23λ. Furthermore, to enhance the passband of the FSS, a multi-layer FSS structure is adopted to form a 2nd-order filter. In addition, as a bandstop with a high suppression is demanded in the 5G communication, we introduce a “Jerusalem cross“ structure in the inductive surface layer ingeniously to add the LC series resonance which can realize a rapid decline in the passband edge. One significant feature of this FSS design is that the passband and stopband can be controlled by different parts of the structure respectively, which greatly improves the FSS stability. Finally, a novel FSS working at the center frequency of 28.5 GHz with a low-profile broadband and a high rejection stopband is designed. It still has a stable transmission performance, when the incident wave angle changes up to 60°. These results demonstrate that the proposed FSS is a good candidate for 5G communication radome.
{"title":"A novel FSS structure with high selectivity and excellent angular stability for 5G communication radome","authors":"Tianwu Li, Da Li, E. Li","doi":"10.1109/GSMM.2017.7970275","DOIUrl":"https://doi.org/10.1109/GSMM.2017.7970275","url":null,"abstract":"A novel frequency selective surface structure (FSSs) with high selectivity and excellent angular stability is proposed in this paper. To improve the performance of the FSS especially in angular stability, the coupling of capacitive surface and inductive surface is employed to realize the miniaturization of the structural unit around 0.23λ. Furthermore, to enhance the passband of the FSS, a multi-layer FSS structure is adopted to form a 2nd-order filter. In addition, as a bandstop with a high suppression is demanded in the 5G communication, we introduce a “Jerusalem cross“ structure in the inductive surface layer ingeniously to add the LC series resonance which can realize a rapid decline in the passband edge. One significant feature of this FSS design is that the passband and stopband can be controlled by different parts of the structure respectively, which greatly improves the FSS stability. Finally, a novel FSS working at the center frequency of 28.5 GHz with a low-profile broadband and a high rejection stopband is designed. It still has a stable transmission performance, when the incident wave angle changes up to 60°. These results demonstrate that the proposed FSS is a good candidate for 5G communication radome.","PeriodicalId":414423,"journal":{"name":"2017 10th Global Symposium on Millimeter-Waves","volume":"363 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134300358","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}
Pub Date : 2017-05-24DOI: 10.1109/GSMM.2017.7970336
Xiu Yin Zhang, Wan-Li Zhan, Xiao-Feng Liu
In this paper, a compact in-phase power divider integrated with bandpass responses in low temperature co-fired ceramic (LTCC) technology is presented. The proposed device is composed of three coupled half-wavelength resonators and an isolation resistor. Among them, one resonator acts as the common resonator and is symmetrically coupled to the other two using multiple broadside coupling. In this way, both filtering and power dividing responses are realized. For validation, an in-phase filtering power divider centered at 5.45 GHz is designed. The size of the circuit is only 3.3 × 3.2 × 1.6 mm3.
{"title":"Compact LTCC in-phase filtering power divider","authors":"Xiu Yin Zhang, Wan-Li Zhan, Xiao-Feng Liu","doi":"10.1109/GSMM.2017.7970336","DOIUrl":"https://doi.org/10.1109/GSMM.2017.7970336","url":null,"abstract":"In this paper, a compact in-phase power divider integrated with bandpass responses in low temperature co-fired ceramic (LTCC) technology is presented. The proposed device is composed of three coupled half-wavelength resonators and an isolation resistor. Among them, one resonator acts as the common resonator and is symmetrically coupled to the other two using multiple broadside coupling. In this way, both filtering and power dividing responses are realized. For validation, an in-phase filtering power divider centered at 5.45 GHz is designed. The size of the circuit is only 3.3 × 3.2 × 1.6 mm3.","PeriodicalId":414423,"journal":{"name":"2017 10th Global Symposium on Millimeter-Waves","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128376735","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}
Pub Date : 2017-05-24DOI: 10.1109/GSMM.2017.7970327
A. Pham, Duy P. Nguyen, M. Darwish
We present several design techniques to achieve high efficiency and linear power amplifiers in the millimeterwave frequencies. We will first review the performance of power amplifiers in different semiconductor process technologies at millimeter-wave frequencies. We will discuss the design, implementation and performance of stacked-FET power amplifiers, Doherty power amplifiers and linearization techniques to achieve high efficiency and linearity in millimeter-wave frequencies. The presented power amplifiers have applications in the 5G wireless communications.
{"title":"High efficiency power amplifiers for 5G wireless communications","authors":"A. Pham, Duy P. Nguyen, M. Darwish","doi":"10.1109/GSMM.2017.7970327","DOIUrl":"https://doi.org/10.1109/GSMM.2017.7970327","url":null,"abstract":"We present several design techniques to achieve high efficiency and linear power amplifiers in the millimeterwave frequencies. We will first review the performance of power amplifiers in different semiconductor process technologies at millimeter-wave frequencies. We will discuss the design, implementation and performance of stacked-FET power amplifiers, Doherty power amplifiers and linearization techniques to achieve high efficiency and linearity in millimeter-wave frequencies. The presented power amplifiers have applications in the 5G wireless communications.","PeriodicalId":414423,"journal":{"name":"2017 10th Global Symposium on Millimeter-Waves","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131903867","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}
Pub Date : 2017-05-24DOI: 10.1109/GSMM.2017.7970278
Xiao Zhang, Lei Zhu
The directivity and gain of a circularly-polarized patch antenna are enhanced by introducing two sets of shorting pins in this paper. The resonant frequency of the antenna is at first studied to demonstrate its increment by making use of the shunt-inductive effect of shorting pins. As a result, its electrical size of a square patch radiator is effectively enlarged so as to enhance its radiation directivity. Next, the two degenerate modes of this resonating patch antenna are properly separated for circularly-polarized radiation by varying the spacing of a pair of shorting pins. In final, the simulated and measured results demonstrate that the directivity of the proposed antenna can be enhanced to 10.8 dBic, with about 2.8 dB increment.
{"title":"Pin-loaded circularly-polarized patch antenna with enhanced gain","authors":"Xiao Zhang, Lei Zhu","doi":"10.1109/GSMM.2017.7970278","DOIUrl":"https://doi.org/10.1109/GSMM.2017.7970278","url":null,"abstract":"The directivity and gain of a circularly-polarized patch antenna are enhanced by introducing two sets of shorting pins in this paper. The resonant frequency of the antenna is at first studied to demonstrate its increment by making use of the shunt-inductive effect of shorting pins. As a result, its electrical size of a square patch radiator is effectively enlarged so as to enhance its radiation directivity. Next, the two degenerate modes of this resonating patch antenna are properly separated for circularly-polarized radiation by varying the spacing of a pair of shorting pins. In final, the simulated and measured results demonstrate that the directivity of the proposed antenna can be enhanced to 10.8 dBic, with about 2.8 dB increment.","PeriodicalId":414423,"journal":{"name":"2017 10th Global Symposium on Millimeter-Waves","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121981698","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}
Pub Date : 2017-05-24DOI: 10.1109/GSMM.2017.7970326
Bumman Kim, Kyunghoon Moon, Daechul Jeong, Seokhyun Kim, Junho Shin
A highly linear power amplifier (PA) at Ka-band is implemented in 28-nm bulk CMOS process. Operating at a deep class-AB mode with appropriate 2nd harmonic control circuit, a highly linear and efficient PA is designed at mmwave band. This PA architecture provides a linear PA operation closer to the saturated power, providing high efficiency. Also elaborated harmonic tuning and neutralization techniques are used to further improve the gain and stability. A 2-stack PA is designed for higher gain and output power than a common source PA. Additionally, the memory effect of the PA is suppressed to increase the video bandwidth in the GHz range. This amplifier is quite suitable for 5G application.
{"title":"Linear PA at mm-Wave band for 5G application","authors":"Bumman Kim, Kyunghoon Moon, Daechul Jeong, Seokhyun Kim, Junho Shin","doi":"10.1109/GSMM.2017.7970326","DOIUrl":"https://doi.org/10.1109/GSMM.2017.7970326","url":null,"abstract":"A highly linear power amplifier (PA) at Ka-band is implemented in 28-nm bulk CMOS process. Operating at a deep class-AB mode with appropriate 2nd harmonic control circuit, a highly linear and efficient PA is designed at mmwave band. This PA architecture provides a linear PA operation closer to the saturated power, providing high efficiency. Also elaborated harmonic tuning and neutralization techniques are used to further improve the gain and stability. A 2-stack PA is designed for higher gain and output power than a common source PA. Additionally, the memory effect of the PA is suppressed to increase the video bandwidth in the GHz range. This amplifier is quite suitable for 5G application.","PeriodicalId":414423,"journal":{"name":"2017 10th Global Symposium on Millimeter-Waves","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121293353","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}
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