Pub Date : 2019-06-02DOI: 10.1109/MWSYM.2019.8700742
A. Boaventura, Dylan F. Williams, P. Hale, G. Avolio
We propose an approach for characterizing the complex frequency response of sampling oscilloscopes using a calibrated large-signal network analyzer (LSNA) and a broadband pulse source. First, we perform a full wave-parameter calibration of the LSNA using its internal continuous wave (CW) sources. Then, we replace the internal CW sources with an external broadband pulse source and measure it with the calibrated LSNA and oscilloscope connected to the LSNA test port. The complex frequency response of the oscilloscope’s sampler is derived in the frequency domain as the ratio of the oscilloscope signal spectrum to the calibrated LSNA signal spectrum. We achieve less than 0.7 dB amplitude and 5 degrees phase difference up to 45 GHz between the proposed LSNA calibration and previous NIST electro-optic sampling (EOS) characterization of the same sampler.
{"title":"An Approach for Characterizing the Frequency Response of Sampling-Oscilloscopes Using a Large-Signal Network Analyzer","authors":"A. Boaventura, Dylan F. Williams, P. Hale, G. Avolio","doi":"10.1109/MWSYM.2019.8700742","DOIUrl":"https://doi.org/10.1109/MWSYM.2019.8700742","url":null,"abstract":"We propose an approach for characterizing the complex frequency response of sampling oscilloscopes using a calibrated large-signal network analyzer (LSNA) and a broadband pulse source. First, we perform a full wave-parameter calibration of the LSNA using its internal continuous wave (CW) sources. Then, we replace the internal CW sources with an external broadband pulse source and measure it with the calibrated LSNA and oscilloscope connected to the LSNA test port. The complex frequency response of the oscilloscope’s sampler is derived in the frequency domain as the ratio of the oscilloscope signal spectrum to the calibrated LSNA signal spectrum. We achieve less than 0.7 dB amplitude and 5 degrees phase difference up to 45 GHz between the proposed LSNA calibration and previous NIST electro-optic sampling (EOS) characterization of the same sampler.","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"879 1","pages":"1387-1390"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76992329","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 : 2019-06-02DOI: 10.1109/mwsym.2019.8701123
Dongze Zheng, Yue-Long Lyu, K. Wu
A quasi-uniform transversely slotted substrate integrated waveguide (SIW) leaky-wave structure with enhanced beam-scanning rate has been proposed and studied in this paper for millimeter-wave applications. By adopting a long inductive transverse slot in each unit cell while keeping a small period length, the sensitivity of effective phase constant (i.e. the slope of effective phase constant versus frequency) of the unit cell can be increased significantly, thereby resulting in a quasi-uniform leaky-wave antenna with a fast beam-scanning property. The working principle is elaborated with an equivalent circuit model of the unit cell, and both of circuit-based and full-wave simulations are conducted to verify the design concept. To do the demonstration, a limited frequency band from 34 to 36 GHz (5.7%) has been designated specifically to implement the proposed leaky-wave antenna. Furthermore, a taper design with -25 dB Taylor distribution is carried out for the antenna to achieve a low sidelobe radiation. A prototype is then fabricated and tested. Experimental results show that the beam can be scanned from 17o to 58o with low sidelobe levels over such a narrow bandwidth. The simulated and measured results are in a good agreement.
{"title":"A Quasi-Uniform Transversely Slotted SIW Leaky-Wave Structure with Enhanced Beam-Scanning Rate for Millimeter-Wave Applications","authors":"Dongze Zheng, Yue-Long Lyu, K. Wu","doi":"10.1109/mwsym.2019.8701123","DOIUrl":"https://doi.org/10.1109/mwsym.2019.8701123","url":null,"abstract":"A quasi-uniform transversely slotted substrate integrated waveguide (SIW) leaky-wave structure with enhanced beam-scanning rate has been proposed and studied in this paper for millimeter-wave applications. By adopting a long inductive transverse slot in each unit cell while keeping a small period length, the sensitivity of effective phase constant (i.e. the slope of effective phase constant versus frequency) of the unit cell can be increased significantly, thereby resulting in a quasi-uniform leaky-wave antenna with a fast beam-scanning property. The working principle is elaborated with an equivalent circuit model of the unit cell, and both of circuit-based and full-wave simulations are conducted to verify the design concept. To do the demonstration, a limited frequency band from 34 to 36 GHz (5.7%) has been designated specifically to implement the proposed leaky-wave antenna. Furthermore, a taper design with -25 dB Taylor distribution is carried out for the antenna to achieve a low sidelobe radiation. A prototype is then fabricated and tested. Experimental results show that the beam can be scanned from 17o to 58o with low sidelobe levels over such a narrow bandwidth. The simulated and measured results are in a good agreement.","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"39 1","pages":"885-888"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77518901","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 : 2019-06-02DOI: 10.1109/mwsym.2019.8700848
Dakotah J. Simpson, R. Gómez‐García, D. Psychogiou
This paper reports on the RF design of multi-band bandpass filters (BPFs) along with a simple tuning method to obtain multiple levels of transfer-function reconfigurability. The proposed multi-band BPF concept is based on multi-resonant cells that are incorporated within the two transversal paths of a doublet. It is shown that by solely reconfiguring the resonant frequencies of its constituent resonators, multiple quasi-elliptic-type passbands can be created and controlled in terms of: i) center frequency, ii) bandwidth, and iii) number through their intrinsic RF switching and/or merging. In addition, the proposed filter concept allows for the realization of i) an all-reject state and ii) a single-band BPF state with >5.1:1 BW tuning. The theoretical design principles of the multi-band BPF approach are presented by means of coupling routing diagrams and synthesized examples. For proof-of-concept demonstration purposes, a tri-band BPF microstrip prototype was designed, manufactured, and measured.
{"title":"Multi-Band Bandpass Filters with Multiple Levels of Transfer-Function Reconfigurability","authors":"Dakotah J. Simpson, R. Gómez‐García, D. Psychogiou","doi":"10.1109/mwsym.2019.8700848","DOIUrl":"https://doi.org/10.1109/mwsym.2019.8700848","url":null,"abstract":"This paper reports on the RF design of multi-band bandpass filters (BPFs) along with a simple tuning method to obtain multiple levels of transfer-function reconfigurability. The proposed multi-band BPF concept is based on multi-resonant cells that are incorporated within the two transversal paths of a doublet. It is shown that by solely reconfiguring the resonant frequencies of its constituent resonators, multiple quasi-elliptic-type passbands can be created and controlled in terms of: i) center frequency, ii) bandwidth, and iii) number through their intrinsic RF switching and/or merging. In addition, the proposed filter concept allows for the realization of i) an all-reject state and ii) a single-band BPF state with >5.1:1 BW tuning. The theoretical design principles of the multi-band BPF approach are presented by means of coupling routing diagrams and synthesized examples. For proof-of-concept demonstration purposes, a tri-band BPF microstrip prototype was designed, manufactured, and measured.","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"87 1","pages":"91-94"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77572222","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 : 2019-06-02DOI: 10.1109/mwsym.2019.8701100
Mohsen Hosseini, Wei-Ting Wong, J. Bardin
The design and characterization of a low noise amplifier optimized for the readout of microwave kinetic inductance detectors is described. The work is first motivated through a description of microwave kinetic inductance detectors and a discussion of the requirements for the low-noise amplifiers employed for readout of these devices. Next, the design of a two-stage silicon germanium cryogenic integrated circuit low noise amplifier is presented. The small-signal and large-signal characteristics of the fabricated amplifier are then measured. It is shown that, at a physical temperature of 16 K, the amplifier achieves a gain of greater than 30 dB and an average noise temperature of 3.3 K over the 0.4–1.2 GHz frequency band while dissipating less than 7 mW. Moreover, the wideband compression characteristics are measured it is found that the linearity of the amplifier is sufficient to support frequency domain multiplexed readout of more than 500 detectors.
{"title":"A 0.4–1.2 GHz SiGe Cryogenic LNA for Readout of MKID Arrays","authors":"Mohsen Hosseini, Wei-Ting Wong, J. Bardin","doi":"10.1109/mwsym.2019.8701100","DOIUrl":"https://doi.org/10.1109/mwsym.2019.8701100","url":null,"abstract":"The design and characterization of a low noise amplifier optimized for the readout of microwave kinetic inductance detectors is described. The work is first motivated through a description of microwave kinetic inductance detectors and a discussion of the requirements for the low-noise amplifiers employed for readout of these devices. Next, the design of a two-stage silicon germanium cryogenic integrated circuit low noise amplifier is presented. The small-signal and large-signal characteristics of the fabricated amplifier are then measured. It is shown that, at a physical temperature of 16 K, the amplifier achieves a gain of greater than 30 dB and an average noise temperature of 3.3 K over the 0.4–1.2 GHz frequency band while dissipating less than 7 mW. Moreover, the wideband compression characteristics are measured it is found that the linearity of the amplifier is sufficient to support frequency domain multiplexed readout of more than 500 detectors.","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"42 1","pages":"164-167"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76368364","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 : 2019-06-02DOI: 10.1109/mwsym.2019.8700860
Yutong Jiang, T. Leng, Yixian Fang, Lulu Xu, Kewen Pan, Zhirun Hu
A novel e-textile integrated wideband monopole antenna designed for body-worn energy harvesting systems is presented. The proposed antenna is constructed with silver coated conductive threads woven into cotton substrate, and the operation bandwidth of which covers GSM bands (range 870.4-915 MHz and 1.7-1.9 GHz), LTE bands (range 0.79–0.96 GHz; 1.71–2.17 GHz; and 2.5–2.69 GHz) and Wi-Fi frequencies (2.4 and 3.6 GHz).
{"title":"A Novel e-textile Integrated Wideband Monopole Antenna for Body-worn Energy Harvesting Systems","authors":"Yutong Jiang, T. Leng, Yixian Fang, Lulu Xu, Kewen Pan, Zhirun Hu","doi":"10.1109/mwsym.2019.8700860","DOIUrl":"https://doi.org/10.1109/mwsym.2019.8700860","url":null,"abstract":"A novel e-textile integrated wideband monopole antenna designed for body-worn energy harvesting systems is presented. The proposed antenna is constructed with silver coated conductive threads woven into cotton substrate, and the operation bandwidth of which covers GSM bands (range 870.4-915 MHz and 1.7-1.9 GHz), LTE bands (range 0.79–0.96 GHz; 1.71–2.17 GHz; and 2.5–2.69 GHz) and Wi-Fi frequencies (2.4 and 3.6 GHz).","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"51 1","pages":"1057-1059"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76728508","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 : 2019-06-02DOI: 10.1109/mwsym.2019.8701101
C. Cooke, K. Leong, Alfonso Escorcia, X. Mei, T. Barton, M. Vega, Dong L. Wu, W. Deal
In this work, a compact 220 GHz polarimetric LNA front-end is reported. The front-end is intended to be integrated into a polarimetric direct detection receiver for sensing of temperature and humidity profiles in the Earth’s atmosphere. We show measured channel gain of approximately 35 dB per channel, with a corresponding noise figure of 3.9 dB. This work represents the first 220 GHz polarimetric direct detection front-end, and is enabled by an advanced 25 nm InP HEMT MMIC technology.
{"title":"A 220 GHz Dual Channel LNA Front-End for a Direct Detection Polarimetric Receiver","authors":"C. Cooke, K. Leong, Alfonso Escorcia, X. Mei, T. Barton, M. Vega, Dong L. Wu, W. Deal","doi":"10.1109/mwsym.2019.8701101","DOIUrl":"https://doi.org/10.1109/mwsym.2019.8701101","url":null,"abstract":"In this work, a compact 220 GHz polarimetric LNA front-end is reported. The front-end is intended to be integrated into a polarimetric direct detection receiver for sensing of temperature and humidity profiles in the Earth’s atmosphere. We show measured channel gain of approximately 35 dB per channel, with a corresponding noise figure of 3.9 dB. This work represents the first 220 GHz polarimetric direct detection front-end, and is enabled by an advanced 25 nm InP HEMT MMIC technology.","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"25 1","pages":"508-511"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78262735","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 : 2019-06-02DOI: 10.1109/mwsym.2019.8700800
Abhishek Kumar, S. Aniruddhan
A reciprocal network to mitigate cross-talk induced interference (CI) in a 2×2 Multiple Input Multiple Output (MIMO) wireless node operating in same-channel full-duplex (SCFD) mode is proposed. Reciprocal nature of channel between the two antennas of the MIMO node is exploited to simplify the design of cancellation network. A canceller board is designed and fabricated on an FR4 PCB to test the proposed technique. Measurements on the board connected to a dual-port antenna mounted in lab environment show CI cancellation of more than 55dB in 20MHz bandwidth around 2.35 GHz. Self interference (SI) is also cancelled to more than 35dB in the 20 MHz bandwidth. Measured results with modulated 20MHz +30 dBm signal applied at transmit ports are also shown.
{"title":"A 2.35 GHz Cross-Talk Canceller for 2×2 MIMO Full-Duplex Wireless System","authors":"Abhishek Kumar, S. Aniruddhan","doi":"10.1109/mwsym.2019.8700800","DOIUrl":"https://doi.org/10.1109/mwsym.2019.8700800","url":null,"abstract":"A reciprocal network to mitigate cross-talk induced interference (CI) in a 2×2 Multiple Input Multiple Output (MIMO) wireless node operating in same-channel full-duplex (SCFD) mode is proposed. Reciprocal nature of channel between the two antennas of the MIMO node is exploited to simplify the design of cancellation network. A canceller board is designed and fabricated on an FR4 PCB to test the proposed technique. Measurements on the board connected to a dual-port antenna mounted in lab environment show CI cancellation of more than 55dB in 20MHz bandwidth around 2.35 GHz. Self interference (SI) is also cancelled to more than 35dB in the 20 MHz bandwidth. Measured results with modulated 20MHz +30 dBm signal applied at transmit ports are also shown.","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"67 1","pages":"877-880"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87838011","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 : 2019-06-02DOI: 10.1109/mwsym.2019.8700732
Xiaohu Wu, M. Nafe, Alejandro Álvarez Melcón, J. Sebastián Gómez-Díaz, X. Liu
A magnetless non-reciprocal filter based on spatio-temporal modulation is demonstrated in this paper. By modulating the resonant frequencies of the resonators with a progressive phase shift, a large difference between the forward and backward transmissions can be achieved, realizing a filter with non-reciprocal amplitude responses. As a proof-of-concept, a 2-pole microstrip filter centered at 1.0 GHz is designed and characterized. The non-reciprocal transmission is 11 dB in simulation and 6 dB in measurement, which experimentally validates the proposed concept.
{"title":"A Non-Reciprocal Microstrip Bandpass Filter Based on Spatio-Temporal Modulation","authors":"Xiaohu Wu, M. Nafe, Alejandro Álvarez Melcón, J. Sebastián Gómez-Díaz, X. Liu","doi":"10.1109/mwsym.2019.8700732","DOIUrl":"https://doi.org/10.1109/mwsym.2019.8700732","url":null,"abstract":"A magnetless non-reciprocal filter based on spatio-temporal modulation is demonstrated in this paper. By modulating the resonant frequencies of the resonators with a progressive phase shift, a large difference between the forward and backward transmissions can be achieved, realizing a filter with non-reciprocal amplitude responses. As a proof-of-concept, a 2-pole microstrip filter centered at 1.0 GHz is designed and characterized. The non-reciprocal transmission is 11 dB in simulation and 6 dB in measurement, which experimentally validates the proposed concept.","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"7 1","pages":"9-12"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87176025","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 : 2019-06-02DOI: 10.1109/mwsym.2019.8700875
M. Haider, J. Russer, Jesus Abundis Patino, C. Jirauschek, P. Russer
Josephson traveling wave parametric amplifiers have enabled ultra-sensitive detection of microwave photons in radio astronomy and real-time readout of superconducting quantum bits. To achieve a large gain, the interaction time with the non-linearity of the amplifier needs to be maximized. Traveling wave parametric amplifiers exhibit long interaction times by providing long propagation paths, enabling a greater gain and higher bandwidths than other microwave parametric amplifiers. In the case of the degenerate Josephson parametric amplifier (DJPA) below threshold of parametric oscillation, a squeezed vacuum state can be generated, and above threshold a second bifurcation point exists, where the device generates amplitude squeezed radiation.
{"title":"A Josephson Traveling Wave Parametric Amplifier for Quantum Coherent Signal Processing","authors":"M. Haider, J. Russer, Jesus Abundis Patino, C. Jirauschek, P. Russer","doi":"10.1109/mwsym.2019.8700875","DOIUrl":"https://doi.org/10.1109/mwsym.2019.8700875","url":null,"abstract":"Josephson traveling wave parametric amplifiers have enabled ultra-sensitive detection of microwave photons in radio astronomy and real-time readout of superconducting quantum bits. To achieve a large gain, the interaction time with the non-linearity of the amplifier needs to be maximized. Traveling wave parametric amplifiers exhibit long interaction times by providing long propagation paths, enabling a greater gain and higher bandwidths than other microwave parametric amplifiers. In the case of the degenerate Josephson parametric amplifier (DJPA) below threshold of parametric oscillation, a squeezed vacuum state can be generated, and above threshold a second bifurcation point exists, where the device generates amplitude squeezed radiation.","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"12 1","pages":"956-958"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87506585","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 : 2019-06-02DOI: 10.1109/mwsym.2019.8700865
Hang-Ji Liu, Xi Zhu, Muting Lu, K. Yeo
A voltage-controlled programmable-gain amplifier (VC-PGA) is designed in this work. The power consumption of the VC-PGA is binary-weighted. In contrast to conventional PGAs, the gain step of the designed PGA can be continuously tuned by a control voltage. To prove the concept, an analog baseband chain is implemented in 65 nm CMOS technology, which consists of a switchable-order filter with the VC-PGA. The measurements show that the frequency responses can be configured as either 5th or 7th order with 16 gain steps. The bandwidth is approximately 50 MHz for all cases and the gain step can be continuously tuned between 0 and 3 dB. The core area is only 0.18 μm2.
{"title":"Design of a Voltage-Controlled Programmable-Gain Amplifier in 65-nm CMOS Technology","authors":"Hang-Ji Liu, Xi Zhu, Muting Lu, K. Yeo","doi":"10.1109/mwsym.2019.8700865","DOIUrl":"https://doi.org/10.1109/mwsym.2019.8700865","url":null,"abstract":"A voltage-controlled programmable-gain amplifier (VC-PGA) is designed in this work. The power consumption of the VC-PGA is binary-weighted. In contrast to conventional PGAs, the gain step of the designed PGA can be continuously tuned by a control voltage. To prove the concept, an analog baseband chain is implemented in 65 nm CMOS technology, which consists of a switchable-order filter with the VC-PGA. The measurements show that the frequency responses can be configured as either 5th or 7th order with 16 gain steps. The bandwidth is approximately 50 MHz for all cases and the gain step can be continuously tuned between 0 and 3 dB. The core area is only 0.18 μm2.","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"98 1","pages":"87-90"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87579147","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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