60 GHz Resonant Photoreceiver With an Integrated SiGe HBT Amplifier for Low Cost Analog Radio-Over-Fiber Links
An analog radio-over-fiber photoreceiver based on a resonant narrowband transimpedance low noise amplifier (TILNA) is proposed and demonstrated for use in low-cost and low-power remote radio heads for distributed antenna systems in the unlicensed 60 GHz band. The amplifier is designed to present a c...
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Published in | Journal of lightwave technology Vol. 39; no. 16; pp. 5307 - 5313 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
New York
IEEE
15.08.2021
The Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subjects | |
Online Access | Get full text |
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Summary: | An analog radio-over-fiber photoreceiver based on a resonant narrowband transimpedance low noise amplifier (TILNA) is proposed and demonstrated for use in low-cost and low-power remote radio heads for distributed antenna systems in the unlicensed 60 GHz band. The amplifier is designed to present a conjugate matched impedance to a wirebonded photodiode where the input impedance has a real part of 10<inline-formula><tex-math notation="LaTeX">\mathrm{\Omega }</tex-math></inline-formula> while the output impedance is matched towards 50 <inline-formula><tex-math notation="LaTeX">\Omega</tex-math></inline-formula>. Fabricated in a 55 nm SiGe BiCMOS technology, the TILNA features a three stage common emitter low noise amplifier with 17 dB of gain, a 3.4 dB noise figure, an output 1-dB compression point of 8 dBm and low power consumption of 33.6 mW while occupying only 0.25 mm 2 of chip space including pads. The photoreceiver, formed by the TILNA and a wirebonded InP UTC photodiode, offers 29 dB higher gain than a 50 <inline-formula><tex-math notation="LaTeX">\Omega</tex-math></inline-formula> terminated reference photodiode where 11 dB improvement is provided by resonant matching. Experimental results show that the proposed photoreceiver has achieved up to 20Gbps C-band transmission of complex modulated waveforms over 5km of standard single-mode fiber using 4 Gbaud QAM32 with an RMS EVM of 11.5%. |
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ISSN: | 0733-8724 1558-2213 |
DOI: | 10.1109/JLT.2021.3095522 |