Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Kimia T. Ansari"'
Autor:
Hari Krishna Pothula, David Wessel, Wenyao Zhai, Dong Liang, Kimia T. Ansari, Li Xu, Sam Tiller, Hua Cai, Morris Repeta, Guanjgian Wang, Wen Tong, Tyler Neil Ross
Publikováno v:
2020 IEEE/MTT-S International Microwave Symposium (IMS).
This paper presents an E-band communication link using a 256-element phased-array. The design is based on 8-element sub-arrays, using transmit/receive beamformer chips employing a 6-bit phase shifter fabricated in a SiGe BiCMOS process. Antennas were
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9064137bbad61fd7ec7435218c715f56
https://doi.org/10.1109/ims30576.2020.9223784
https://doi.org/10.1109/ims30576.2020.9223784
Publikováno v:
2018 48th European Microwave Conference (EuMC).
In this paper we present a programmable variable-gain amplifier (VGA) for a 5G demonstration system at E-band. The proposed VGA consists of a common-base amplifier and a variable loss attenuator controlled by a novel programmable feedback circuit. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e21220edba44208e3e8d5bf4455790b6
https://doi.org/10.23919/eumc.2018.8541726
https://doi.org/10.23919/eumc.2018.8541726
Publikováno v:
2018 48th European Microwave Conference (EuMC).
A 6-bit phase shifter operating at E-band (71 GHz to 76 GHz) is presented. The differential phase shifter is based on a vector modulator topology, using an accurate variable attenuator to achieve variable gain in the I and Q branches. The accuracy is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46d6f93f0b71bad461ec6f57f5278fe2
https://doi.org/10.23919/eumc.2018.8541641
https://doi.org/10.23919/eumc.2018.8541641
Publikováno v:
2018 IEEE Radio Frequency Integrated Circuits Symposium (RFIC).
A variable attenuator operating over 71 GHz to 76 GHz is presented. The circuit design, based on a differential ∏ attenuator, allows for precise control over the attenuation due to a feedback control circuit. When manufactured using the CMOS portio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::472b2db8fd12d2aeee163e69e2c13644
https://doi.org/10.1109/rfic.2018.8429003
https://doi.org/10.1109/rfic.2018.8429003
Publikováno v:
IEEE Microwave and Wireless Components Letters. 26:610-612
This letter describes the implementation and performance of a phase detector and algorithm combination used to tune the relative phases of an 18-GHz RTWO. Symmetrical XOR phase detectors are designed (20 GHz simulated operation), fabricated in a SiGe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3509e5a46f38e1734b6b4a64290ead56
https://doi.org/10.1109/lmwc.2016.2585574
https://doi.org/10.1109/lmwc.2016.2585574
Publikováno v:
IEEE Microwave and Wireless Components Letters. 25:820-822
In this letter, the design of a multiphase 18.5 GHz Rotary Travelling-Wave Oscillator (RTWO) is presented. Lack of symmetry in such a structure can result in oscillation in a standing wave rather than the travelling wave mode. In order to determine t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::900c4b5321866f322eac0733207e8c67
https://doi.org/10.1109/lmwc.2015.2495150
https://doi.org/10.1109/lmwc.2015.2495150
Publikováno v:
2015 IEEE Bipolar/BiCMOS Circuits and Technology Meeting - BCTM.
In this paper, the design methodology and layout considerations of a multiphase Rotary Travelling-Wave Voltage-Controlled Oscillator (RTW-VCO) and a high gain three-stage Power Amplifier (PA) for a phased-array transmitter application are presented.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f128835631c07fd637cdf061d49efbe5
https://doi.org/10.1109/bctm.2015.7340587
https://doi.org/10.1109/bctm.2015.7340587
Autor:
Kimia T. Ansari, Calvin Plett
Publikováno v:
ISCAS
A CMOS 3.1–10.6GHz low power low noise amplifier utilizing a feedback technique is presented. The shunt and series-inductive peaking techniques have been used in the input and output stages to extend the 3-dB bandwidth of the LNA. To achieve wide a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::41d386e660aa23005b97409e690c33b8
https://doi.org/10.1109/iscas.2010.5537968
https://doi.org/10.1109/iscas.2010.5537968
Publikováno v:
ICECS
A CMOS distributed amplifier operating over 0.4–22 GHz is presented. Three stages of cascode gain cell are used in this design to enhance the gain and bandwidth performance. To improve the stability of the circuit, a damping resistor is added to th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db4c4deff9dc510276aab4a4e3ed908e
https://doi.org/10.1109/icecs.2009.5410911
https://doi.org/10.1109/icecs.2009.5410911
Autor:
Calvin Plett, Kimia T. Ansari
Publikováno v:
2009 2nd Microsystems and Nanoelectronics Research Conference.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd26cde3528b5366a29449f38a7efcc6
https://doi.org/10.1109/mnrc15848.2009.5338973
https://doi.org/10.1109/mnrc15848.2009.5338973