2013 IEEE International Solid-State Circuits Conference Digest of Technical Papers 2013
DOI: 10.1109/isscc.2013.6487760
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A multiband 40nm CMOS LTE SAW-less modulator with −60dBc C-IM3

Abstract: Due to the increasing demand for communication bandwidth combined with the scarceness of free spectrum, the complexity and versatility of 4 th -generation modulation schemes is greater than ever. In particular, the LTE standard defines multiple RF bands and groups OFDM modulated subcarriers into Resource Blocks (RB) that can be flexibly used within the allocated channel bandwidth. When the transmitted power is concentrated in one or a few RBs, counter-intermodulation products (C-IM) may fall directly or throug… Show more

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Cited by 18 publications
(16 citation statements)
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“…This enables the transmitter to achieve a C-IM3 of 67.2 dBc at 3.3 dBm output power, as shown in Fig. 21, which is comparable with other works [4], [5], [7]. …”
Section: Measured Resultssupporting
confidence: 81%
See 2 more Smart Citations
“…This enables the transmitter to achieve a C-IM3 of 67.2 dBc at 3.3 dBm output power, as shown in Fig. 21, which is comparable with other works [4], [5], [7]. …”
Section: Measured Resultssupporting
confidence: 81%
“…[5] integrates I/Q DACs and PLL. [4], [7] and [6] are LTE transmitters without PLL. In LTE modes with 20 MHz signal bandwidth.…”
Section: Measured Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…The main problem with these structures is that they do not significantly benefit from CMOS scaling, thus leading to large area consumption even in the most advanced process nodes. This becomes evident by analyzing the chip micrographs of the circuits published in [1], [3]- [6], from where it can be noticed that the analog baseband section takes up to 50% of the total TX area.…”
Section: Introductionmentioning
confidence: 99%
“…Unfortunately, the intrinsic analog properties of CMOS transistors do not follow the improvements of their digital counterparts, but even tend to worsen with scaling. Analog performance has to be supported by calibration and tuning in so-called digitally assisted RF, which when cleverly used results in improved performance and versatility [1].…”
Section: Introductionmentioning
confidence: 99%