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- W4308069491 abstract "A 55-GHz direct-conversion RF transmitter with high linearity and quadrature mismatch calibration is presented. The RF transmitter comprises a power amplifier, image-rejection quadrature mixer, baseband amplifier, and quadrature VCO. To achieve a highly linear output power per die area, we employ a distributed active transformer-based two-way power-combining power amplifier, and a pFET-based passive mixer. The I/Q mismatch calibration is implemented for a high image-rejection ratio. The amplitude mismatch is calibrated by tuning the gate biases of the mixer switching FETs, and the phase mismatch is calibrated by 3-bit switched capacitor tuning at the LO buffer LC load. Realized in 40 nm CMOS with a die area of <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>$boldsymbol{1.6}times boldsymbol{0.7} mathbf{mm}^{2}$</tex> , the RF transmitter exhibits <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>$mathbf{OP}_{mathbf{1dB}}$</tex> of <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>$+boldsymbol{12.8}mathbf{dBm}, mathbf{P}_{mathbf{sat}}$</tex> of +13.9 dBm, IRR of -45.2 dBc, LOFT of -36.3 dBc. The <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>$mathbf{OP}_{1mathbf{dB}}$</tex> per die area is 17 W/mm <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sup> ." @default.
- W4308069491 created "2022-11-08" @default.
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- W4308069491 date "2022-09-26" @default.
- W4308069491 modified "2023-09-26" @default.
- W4308069491 title "A 55-GHz Highly Linear Direct-Conversion RF Transmitter in 40 nm CMOS" @default.
- W4308069491 doi "https://doi.org/10.23919/eumic54520.2022.9923522" @default.
- W4308069491 hasPublicationYear "2022" @default.
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