A 90-GHz InP-HEMT lossy match amplifier with a 20-dB gain using a broadband matching technique

We demonstrated a 90-GHz InP-HEMT lossy match amplifier (LMA) with a 20-dB gain for the first time. The power consumption was 220 mW, which is the smallest ever reported for a broadband amplifier with a bandwidth of over 80 GHz. The amplifier acts as a C-R coupled amplifier in the low to medium freq...

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Bibliographic Details
Published in:IEEE journal of solid-state circuits 2005-10, Vol.40 (10), p.2098-2103
Main Authors: Inoue, Y., Sato, M., Ohki, T., Makiyama, K., Takahashi, T., Shigematsu, H., Hirose, T.
Format: Article
Language:English
Subjects:
Amplification
Amplifiers
Applied sciences
Bandwidth
Broadband
Broadband amplifiers
Circuit properties
Circuits
Electric, optical and optoelectronic circuits
Electronic circuits
Electronics
Energy consumption
Exact sciences and technology
Frequency
Gain
Guidelines
High gain
lossy match amplifier
Matching
Optical amplifiers
Optical fiber communication
Optical losses
Q factor
Resistors
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Topology
Transistors
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Summary:We demonstrated a 90-GHz InP-HEMT lossy match amplifier (LMA) with a 20-dB gain for the first time. The power consumption was 220 mW, which is the smallest ever reported for a broadband amplifier with a bandwidth of over 80 GHz. The amplifier acts as a C-R coupled amplifier in the low to medium frequency range and as an L-C match amplifier at high frequencies. This configuration provides both high gain and wide bandwidth. The key to achieving a bandwidth of over 80 GHz is broadband matching in the L-C match amplifier. In this paper, we propose a broadband matching technique with a low-Q network and describe the design guideline we used to get excellent performance.
ISSN:0018-9200
1558-173X
DOI:10.1109/JSSC.2005.854616