24–40 GHz Dual-Band Highly Linear CMOS Up-Conversion Mixer for mmWave 5G NR FR2 Cellular Applications

28-GHz CMOS Up-Conversion Mixer With Improved LO Second-Harmonic Leakage Signal Suppression for 5G Applications

“…Table I summarizes the measured results of the proposed up-conversion mixer with IF amplifier and LO buffer and compares its performance with those of other published mmWave up-conversion mixers [18]- [25]. To the best of our knowledge, previously published related papers reported neither the problem nor the performance of the 2LO leakage signal of the mmWave up-conversion mixer for a 28-GHzband 5G dual-conversion single-quadrature transmitter.…”

A 28 GHz Highly Linear Up-Conversion Mixer for 5G Cellular Communications

“…Linearity enhancement techniques with a dual-gate mixer, an adaptive biasing circuit, inductive degeneration, and LO boosting linearization have been reported for a higher 1-dB compression point (P1dB) [12][13][14][15]; however, these techniques are limited by an output P1dB (OP1dB) of less than 0 dBm and hence limited by the third-order intercept point (IP3). To enhance IP3 performance of the up-conversion mixer, second-order intermodulation (IM2) injection and single stack transistor are used [16,17]. However, the IM2 injection degrades the conversion gain (CG) and the single-stack transistor consumes a huge amount of DC power from a large LO signal.…”

Transmission of 10 Gbps C-band-signal-based Radio Over Fiber for Next Generation Communication Systems

“…5G will require current spectrum and mmWave frequency bands to achieve high capacity. Large antenna arrays will be needed as well to help ease the difficult propagation conditions at frequencies ranging from 24 GHz to 30 GHz, 37 GHz to 40 GHz, and in the 52 GHz band [4]. Two types of RoF may be distinguished: ARoF (analog) and DRoF (digital).…”