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A 40 GHz 130nm CMOS power amplifier unit-cell is designed and simulated for use in a downlink transmitter of a millimeter-wave radio-over-fiber system. The system will be used as a complementary solution to Fiber-to-the-Home where geographical limitations and cost considerations are critical. The power amplifier unit-cell has a single-stage cascode structure for stability and input-output isolation...
This paper presents a testbed design by using Software Defined Radio (SDR) and Radio-over-fiber (RoF) platforms for the next generation wireless access network. The proposed testbed supports concurrent multiservice transmissions, in which a heterogeneous network is emulated. The SDR is based on NI USRP RIOs, which generated both IEEE 802.11 and long term evolution (LTE) signals, and integrated with...
In this paper, two sets of low-noise amplifiers (LNAs) implemented in 0.13-$\mu \text{m}$ CMOS technology using different transistor layouts are presented. For a fair comparison, the LNAs were designed using the same circuit topology and components, whereby the differences lie only on the type of transistor used, namely, the common multifinger radio frequency (RF) transistor and multifinger double-gate...
This paper presents the design methodology and implementation of a cascode low-noise amplifier (LNA) for 40GHz radio-over-fiber (RoF) system. The proposed LNA is implemented in 0.13µm CMOS technology. The single-stage LNA achieves a maximum measured small-signal gain of 8.87dB at 41.25GHz while consuming 18.3mW from a 2.0V supply. Measurement results also display a good input and output return losses,...
A 40 GHz power amplifier (PA) driver for the remote antenna unit (RAU) transceiver of a mm-wave radio-over-fiber (RoF) system is presented in this paper. Mm-wave RoF is proposed as a complementary technology to fiber-to-the-home to minimize costs and to increase bandwidth. In order for RoF to be feasible, the cost of the RAU must be minimized through low-cost technology such as CMOS. The PA driver...
A miniature 40 GHz transceiver and radio front-end designed and simulated using a 0.13-μm RF CMOS process for Radio-over-Fiber applications is presented in this paper. The transceiver employs a direct-conversion architecture. The radio is designed for a frequency division duplex (FDD) communications system. PHY layer data rates as high as 1.5 Gbps on a wireless link are feasible using this radio design...
40GHz radio over fibre (ROF) downlink system is constructed to demonstrate HD video transmission capability using the hybrid optical and wireless system. The dual-sideband optical carrier suppression (DSB-OCS) technique is used in conjunction with the minimum transmission bias (MiTB) to generate optical millimetre wave signal by utilizing a dual electrode Mach-Zehnder modulator (DE-MZM). A baseband...
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