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Concurrent transmission and reception of RF signals in different frequency bands is required for transceivers in IMT-Advanced systems to support the spectrum aggregation technique. In this paper, we introduce a prototype of concurrent dual-band receiver that uses IF undersampling, and present some evaluation results. The prototype has two types of receiver architecture, one a single mixer-type receiver...
We demonstrate 172-Gbps cascaded OTDM MUX and DEMUX for future LAN applications. Challenge is that the key devices are integratable, i.e. ISBT optical gates, EAM-DFB VSR MSA transceivers, quantum-dot SOAs, and mode-locked laser diodes.
A digital hopping UWB transceiver that expands the baseband by three times over that of previous technologies to obtain a data rate of 2.88 Gb/s is described. A frequency-hopping polyphase filter (FH-PPF) that switches the passband of an RX chain within a switching time of 5 ns allows compatibility with present 480 Mb/s or lower data rates, while requiring the use of only one LO frequency, as opposed...
A 3.1-to-9.5GHz UWB transceiver is implemented in 90nm CMOS technology. It includes a 12-band synthesizer and wideband TX/RX chains operating from a 1.1V supply. The transceiver provides a TX0IP3 of 7.2 to 8.6dBm, an RX gain of 58 to 64dB, and a NF of 6.3 to 7.8dB across 12 bands
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