A 1.5–45-GHz High-Power 2-D Distributed Voltage-Controlled Attenuator. Nguyen, D., P., Pham, B., L., & Pham, A. IEEE Transactions on Microwave Theory and Techniques, 65(11):4208-4217, 11, 2017. abstract bibtex We present the development of an ultra-wideband and 1-W voltage-controlled attenuator (VCA) using a 0.15-μm enhancement mode gallium arsenide pseudomorphic highelectron mobility transistor technology. For the first time, a 2-D stacked field-effect transistor configuration is employed in a distributed VCA to simultaneously achieve wide bandwidth, high power, high dynamic range, and low insertion loss. The systematic design methodology is proposed, and a VCA prototype is fabricated and measured for verification. The monolithic microwave integrated circuit (MMIC) VCA exhibits a measured insertion loss of 1.9-5.5 dB from 1.5-45 GHz. The measured highest input 1-dB power compression point (P1dB) is 30 dBm with a dynamic range of 26 dB. To the best of the authors' knowledge, this paper reports the highest bandwidth and P1dB of a single MMIC VCA while still maintaining excellent performance regarding dynamic range, insertion loss, and chip size.
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abstract = {We present the development of an ultra-wideband and 1-W voltage-controlled attenuator (VCA) using a 0.15-μm enhancement mode gallium arsenide pseudomorphic highelectron mobility transistor technology. For the first time, a 2-D stacked field-effect transistor configuration is employed in a distributed VCA to simultaneously achieve wide bandwidth, high power, high dynamic range, and low insertion loss. The systematic design methodology is proposed, and a VCA prototype is fabricated and measured for verification. The monolithic microwave integrated circuit (MMIC) VCA exhibits a measured insertion loss of 1.9-5.5 dB from 1.5-45 GHz. The measured highest input 1-dB power compression point (P1dB) is 30 dBm with a dynamic range of 26 dB. To the best of the authors' knowledge, this paper reports the highest bandwidth and P1dB of a single MMIC VCA while still maintaining excellent performance regarding dynamic range, insertion loss, and chip size.},
bibtype = {article},
author = {Nguyen, D P and Pham, B L and Pham, A},
journal = {IEEE Transactions on Microwave Theory and Techniques},
number = {11}
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