A Formation Flight Phased-Array Transceiver for Spatial Power Combining and Distributing Architectures in Direct-to-Device-Communication Satellite Constellations

📋 论文概要

本文提出一种基于皮卫星编队的虚拟相控阵收发器，通过无线接收网关的LO信号省去PLL，降低功耗和成本。采用路径差校准与SRFA技术实现精确波束赋形，旨在实现低成本、高可靠性的卫星通信。

💡 主要创新点

• 提出皮卫星编队作为虚拟相控阵，替代传统大型卫星，降低成本和提升可靠性。
• 采用低功耗FDD收发器架构，从网关无线接收LO信号，省去功耗大的PLL模块。
• 通过路径差校准与SRFA技术实现高精度波束赋形，适用于空间功率合成与分配架构。

🏷 关键词

📄 原文摘要

Japan, 4Iwate University, Iwate, Japan 1 Abstract Conventional satellites are costly and unreliable. We propose a pico-satellite formation as a virtual phased array to reduce costs and improve reliability. A low-power FDD transceiver wirelessly receives an LO signal from a gateway, eliminating power-hungry PLLs. Precise beamforming is achieved by calibrating path differences and using SRFA technology. This work enables future low-cost, highly reliable satellite communications. Conventional satellite communication has relied on large, monolithic satellites orbiting in Low Earth Orbit (LEO) at altitudes of 500 km (Fig. 5.1.1). Notably, systems like BlueWalker, developed by AST, require large deployable 8m×8m antennas to achieve sufficient gain.

👥 作者与机构

Keito Yuasa1, Yuya Takahashi1, Shunya Watanabe1, Sena Kato1, So Ema2, Genma Hattori2, Atsushiro Naka3, Sumio Morioka3, Takahiro Inagawa3,

Kentaro Murata4, Naoki Honma4, Jill Mayeda1, Atsushi Shirane1 Institute of Science Tokyo, Tokyo, Japan, 2Microwave Factory, Kanagawa, Japan, 3Interstellar Technologies, Hokkaido,