Разработан компактный передатчик для E-диапазона с фазовращателем на основе вложенных согласующих цепей

A Compact E-Band Four-Channel Phased-Array Transmitter With Nested-Coupler-Based Phase Shifter Abstract DOI: 10.1109/TMTT.2026.3701701 IEEEXplore: https://ieeexplore.ieee.org/document/11575247 Phrase Summary: An E-band four-channel phased-array transmitter with nested-coupler-based phase shifter. Sentence Summary: This article presents a 71–76-GHz (E-band) four-channel phased-array transmitter in 65-nm CMOS with a nested-coupler-based phase shifter for compactness and accuracy. Paragraph Summary: This article presents a 71–76-GHz (E-band) four-channel phased-array transmitter in 65-nm CMOS. A nested-differential quadrature coupler-based phase shifter achieves compactness and accurate quadrature signal generation. A digitally controlled differential cross-coupled Gm-cell (CSCG) array-based variable-gain amplifier (VGA) assures stable input impedance during gain transitions. The phase shifter achieves 360° phase coverage with 5.625° resolution and 12-dB attenuation (ATT) range in 1-dB steps. The transmitter saturated output power (Psat) measures 13.82 dBm. A compact area of 1.55 × 1.61 mm2 makes this innovative design suitable for substrate-based phased-array implementations for diverse millimeter-wave wireless communication and sensing systems.