This article presents a novel synthesis procedure to implement variable-phase all-pass networks (VP-APNs). The synthesis procedure is based on linear-phase all-pass transfer functions, enabling implementation at millimeter waves. Using the proposed synthesis, VP-APNs with analog and digital control are implemented for the first time in silicon. Using 0.25- $\mu \text{m}$ BiCMOS, the VP-APNs are manufactured and measured, validating the synthesis procedure. Finally, the validated VP-APNs are combined to realize a phase shifter. By combining the analog and digitally controlled networks, we obtain a continuous-tune phase shifter with multiband capabilities, successfully covering several bands from 14 to 54 GHz. This includes Ku-, K-, Ka-, and V-band, as well as both 5G bands around 28 and 39 GHz.

中文翻译：

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可变相位全通网络综合及其在 14-54 GHz 多频段连续调谐移相器中的硅片应用

本文介绍了一种实现可变相位全通网络 (VP-APN) 的新型综合程序。合成程序基于线性相位全通传递函数，可实现毫米波。使用建议的综合，具有模拟和数字控制的 VP-APN 首次在硅片中实现。使用 0.25- $\mu \text{m}$ BiCMOS，可以制造和测量 VP-APN，从而验证合成过程。最后，结合经过验证的 VP-APN 以实现移相器。通过结合模拟和数字控制网络，我们获得了具有多频段功能的连续调谐移相器，成功覆盖了 14 至 54 GHz 的多个频段。这包括 Ku-、K-、Ka- 和 V-频段，以及 28 GHz 和 39 GHz 左右的 5G 频段。