Bandwidth Potential of Cascode HBT-Based TWAs as a Function of Transistor ${ f} _{\max} /{ f} _{ T}$ Ratio

  title={Bandwidth Potential of Cascode HBT-Based TWAs as a Function of Transistor \$\{ f\} _\{\max\} /\{ f\} _\{ T\}\$ Ratio},
  author={Chafik Meliani and Matthias Rudolph and Ralf D{\"o}rner and Wolfgang Heinrich},
  journal={IEEE Transactions on Microwave Theory and Techniques},
The bandwidth potential of cascode HBT-based broadband amplifiers following the traveling-wave amplifier (TWA) concept is studied. An approximate expression for the gain of the circuit is derived, which is based on the transistor small-signal model and the artificial transmission-line parameters. In this way, a relation between the HBT cutoff frequencies f<sub>T</sub> and f<sub>max</sub> and the 3-dB cutoff frequency f<sub>c</sub> of the amplifier is obtained. This is very useful for assessing… CONTINUE READING


Publications citing this paper.
Showing 1-5 of 5 extracted citations

A 1.5–45-GHz High-Power 2-D Distributed Voltage-Controlled Attenuator

IEEE Transactions on Microwave Theory and Techniques • 2017
View 1 Excerpt

Cascaded Constructive Wave Amplification

IEEE Transactions on Microwave Theory and Techniques • 2010

Design of distributed amplifier with L-type networks

2010 IEEE International Conference on Ultra-Wideband • 2010
View 1 Excerpt


Publications referenced by this paper.
Showing 1-10 of 13 references

An over 110-GHz InP HEMT flip-chip distributed baseband amplifier with inverted microstrip line structure for optical transmission systems

24th Annual Technical Digest Gallium Arsenide Integrated Circuit (GaAs IC) Symposiu • 2002
View 6 Excerpts
Highly Influenced

Introduction to Modeling HBTs

M. Rudolph
View 3 Excerpts
Highly Influenced

75 GHz InP HBT distributed amplifier with record figures of merit and low power dissipation for OEIC applications

International Conference on Indium Phosphide and Related Materials, 2005 • 2005
View 1 Excerpt

50-GHz SiGe HBT distributed amplifiers employing constant-k and m-derived filter sections

IEEE Transactions on Microwave Theory and Techniques • 2004
View 1 Excerpt

A 40 Gbps broadband amplifler for modulator- driver applications using a GaAs HBT technology

Bipolar/BiCMOS Circuits and Technology, 2004. Proceedings of the 2004 Meeting • 2004
View 2 Excerpts

Low phase noise MMIC VCOs for Ka-band applications with improved GaInP/GaAs-HBT technology

25th Annual Technical Digest 2003. IEEE Gallium Arsenide Integrated Circuit (GaAs IC) Symposium, 2003. • 2003
View 1 Excerpt

A 0.5–8.5-GHz fully differential CMOS distributed amplifier

H.-T. Ahn, D. J. Allstot
IEEE J. Solid-State Circuits, vol. 37, no. 8, pp. 985–993, Aug. 2002. • 2002
View 1 Excerpt

Similar Papers

Loading similar papers…