Single-Unit Multibit Phase Shifters Using Binary Multibit Susceptance Blocks

0 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE microwave and wireless technology letters Pub Date : 2024-06-13 DOI:10.1109/LMWT.2024.3400834

Faisal Amin;Yun Liu;Yongjiu Zhao;Lingyun Liu

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引用次数: 0

Abstract

A novel approach for the implementation of single-unit multibit phase shifters (SUMBPSs) using binary multibit susceptance blocks (MBSBs) is presented. A single 50-

$\Omega $

main transmission line (MTL) is symmetrically loaded with three binary MBSBs, each comprising M parallel open-circuited stubs and p-i-n diodes. The linear relationship between loaded susceptance and phase shift is established by leveraging the linearity of susceptances curves w.r.t. length of the MTL. The use of single MTL allows the realization of SUMBPSs in a compact, single-unit structure with lower insertion loss (IL), whereas the linear susceptance curves enable the application of the principle of superposition, achieving the required

$2^{M}$

phase states with only

$3\times M$

stubs and switches, representing a significant reduction compared with other contemporary solutions. For validation, a 3-bit SUMBPS is developed, and measurement results are given.

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使用二进制多比特电感块的单比特多比特移相器

本文介绍了一种利用二进制多位移相块（MBSB）实现单机多位移相器（SUMBPS）的新方法。单根 50- $\Omega $ 主传输线 (MTL) 对称加载三个二进制 MBSB，每个 MBSB 由 M 个并联开路存根和 pi-n 二极管组成。加载感抗和相移之间的线性关系是利用感抗曲线与 MTL 长度的线性关系建立起来的。使用单个 MTL 可以在具有较低插入损耗（IL）的紧凑型单单元结构中实现 SUMBPS，而线性感生曲线则使叠加原理得以应用，只需使用 M$ 的 3 次方个存根和开关即可实现所需的 2^{M}$ 相位状态，与其他当代解决方案相比显著降低了成本。为了进行验证，我们开发了一个 3 位 SUMBPS，并给出了测量结果。

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