Zobrazeno 1 - 10
of 38
pro vyhledávání: '"C.M. Grens"'
Publikováno v:
IEEE Transactions on Device and Materials Reliability. 9:440-448
This paper presents the underlying physics and modeling of aggressively biased cascode SiGe heterojunction bipolar transistor power amplifier (PA) cores under large-signal operating conditions. The damage characteristics observed during RF operation,
Publikováno v:
IEEE Transactions on Device and Materials Reliability. 9:431-439
This paper examines the performance and reliability implications associated with aggressively biased cascode SiGe HBT power-amplifier cores under large-signal RF operating conditions. The role of high-power RF stress on device degradation and failure
Publikováno v:
IEEE Transactions on Electron Devices. 55:1276-1285
This paper presents a detailed investigation of the key device-level factors that contribute to the bias-dependent features observed in common-base (CB) dc instability characteristics of advanced SiGe HBTs. Parameters that are relevant to CB avalanch
Publikováno v:
IEEE Transactions on Electron Devices. 54:1605-1616
This paper presents a comprehensive picture of operating-voltage constraints in SiGe heterojunction bipolar transistors, addressing breakdown-related issues as they relate to technology generation, bias configuration, and operating-current density. N
Autor:
Tianbing Chen, Cheryl J. Marshall, Akil K. Sutton, Alvin J. Joseph, C.M. Grens, B.M. Haugerud, Paul W. Marshall, John D. Cressler
Publikováno v:
IEEE Transactions on Nuclear Science. 52:2403-2407
The effect of proton irradiation on operating voltage constraints in SiGe HBTs is investigated for the first time in 120 GHz and 200 GHz SiGe HBTs. A variety of operating bias conditions was examined during irradiation, including terminals grounded,
Autor:
Sachin Seth, Alan Buchholz, Jeff A. Babcock, Tushar Thrivikraman, Marco Bellini, John D. Cressler, Tianbing Chen, Peng Cheng, C.M. Grens, Jonggook Kim
Publikováno v:
2009 IEEE Bipolar/BiCMOS Circuits and Technology Meeting.
The RF safe-operating-area of a variety of both bulk and thick-film SOI SiGe HBTs SiGe has been investigated using DC and pulsed-mode output characteristics, as well as RF gain and linearity measurements. SOI SiGe HBTs are found to suffer more from s
Autor:
Alan Buchholz, C.M. Grens, Yun Liu, Sachin Seth, Peng Cheng, John D. Cressler, Jonggook Kim, Jeff A. Babcock
Publikováno v:
2009 IEEE Bipolar/BiCMOS Circuits and Technology Meeting.
The RF linearity characteristics of complementary (npn + pnp) SiGe HBTs are investigated with respect to bias and frequency dependence, for the first time. The differences in distortion performance between npn and pnp SiGe HBTs are examined. Overall,
Publikováno v:
IEEE Transactions on Electron Devices.
Most bipolar-transistor compact models incorporate some level of self-heating capability in order to determine the impact of thermal effects on circuit performance. Techniques for predicting mutual-thermal-coupling effects, however, are not readily a
Publikováno v:
2009 IEEE Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems.
We present a high-dynamic range (HDR) X-band LNA implemented in silicon-germanium (SiGe) technology tar- geting high-performance radar and wireless communications applications. To our knowledge, this is the first Si-based LNA to achieve over 30 dB ga
Publikováno v:
2009 IEEE Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems.
This paper presents analysis of RF safe-operating- area of aggressively-biased cascode SiGe HBT power amplifier cores under large-signal operating conditions. It is demonstrated that as VC and |ZL| increase, the RF power threshold to cause catastroph