40-GHz high-linearity single-voltage-supply pHEMT gilbert sub-harmonic upconverter using leveled-LO topology

Meng, Chinchun; Su, Jen-Yi; Wei, Hung-Ju; Wu, Po-Yi; Huang, Guo–Wei

doi:10.1109/imws3.2011.6061877

Cited by 2 publications

(2 citation statements)

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“…The reported K and Ka-band up-down converters often use lower sideband injection or harmonic mixing schemes to reduce the system demand for high-frequency and high-performance local oscillator (LO). [7][8][9][10][11][12] Besides, the conversion loss of subharmonic mixers is usually higher than fundamental ones. The intermediate frequency (IF) often adopts the direct frequency conversion to interconnect with the baseband signal generator.…”

Section: Introductionmentioning

confidence: 99%

“…The up‐down converter is a critical circuit in transceiver design, and its output harmonics especially intermodulation in the RF band, have a greater impact on the linearity of the system. The reported K and Ka‐band (18–40 GHz) up‐down converters often use lower sideband injection or harmonic mixing schemes to reduce the system demand for high‐frequency and high‐performance local oscillator (LO) 7–12 . Besides, the conversion loss of subharmonic mixers is usually higher than fundamental ones.…”

Section: Introductionmentioning

confidence: 99%

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A 24.25–30 GHz radio frequency up‐down converter with harmonic distortions rejection for 5G millimeter wave radio channel emulator applications

Zheng

Hou

Wang

et al. 2023

Micro & Optical Tech Letters

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In this paper, a 24.25–30 GHz fully integrated radio frequency (RF) up‐down converter with harmonic distortions rejection for 5G millimeter wave radio channel emulator applications is proposed and implemented in a 0.1‐μm GaAs pseudomorphic high‐electron‐mobility transistor technology. The RF up‐down converter integrates a frequency doubling amplifier chain local oscillator, a harmonic suppression mixer, and three frequency selective filters for unwanted harmonics suppression. To prevent the unwanted harmonics from leaking into the RF band, a higher sideband and high‐intermediate frequency mixer core with harmonic suppression filters is proposed. With this method, the unwanted harmonics are well suppressed. To effectively reduce the chip area, a miniaturized Marchand Balun based on a folded structure is proposed. The measured results demonstrate good in‐band spectral purity with more than 70 dB suppression of unwanted harmonics. Benefit from the high‐side injection mixing scheme and harmonics suppression method, the presented up‐down converter achieves a dynamic power range of −100 to −5 dBm with a conversion loss of 10 dB. The implemented RF up‐down converter occupies only 0.9 × 2.7 mm2 in size, with a power consumption of 400 mW under 4‐V supply.

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