中圖分類號： TN62 文獻(xiàn)標(biāo)識碼： A DOI：10.16157/j.issn.0258-7998.222865 中文引用格式： 張愷，許云鵬，陳秋菊，等. 基于功放、功分技術(shù)的微波信號源擴(kuò)展方法研究[J].電子技術(shù)應(yīng)用，2022，48(7)：100-104. 英文引用格式： Zhang Kai，Xu Yunpeng，Chen Qiuju，et al. Research on microwave signal source expansion method based on power amplifer and power division techenology[J]. Application of Electronic Technique，2022，48(7)：100-104.
Research on microwave signal source expansion method based on power amplifer and power division techenology
University of Science and Technology of China，Hefei 230026，China
Abstract： The test of the superconducting quantum computing chip requires dozens or even hundreds of high-frequency microwave signal inputs. The ordinary microwave signal source generally only has 1~2 channels, which is far from meeting the test requirements. If multiple signal sources are integrated to expand the signal channel, it will be not only bulky and expensive, but the synchronization control of the signal source will be also a difficult problem. Aiming at the above problems, based on the power amplifier and power division technology, in this paper，a method of equal-amplitude expansion of one output of the microwave signal source has been proposed, and a signal source equal-amplitude expansion device integrating attenuator, power amplifier and power division module has been designed. Then an experimental platform has been built with microwave signal source, spectrum analyzer, network analyzer and other measuring instruments to carry out experimental research on the performance of the designed signal source expansion device and verify the microwave signal source expansion method based on power amplifier and power division technology. The experimental results show that the proposed method can ensure that the amplitude and frequency of the extended signal are highly consistent with the source signal, and the signal phase of each extended channel can be kept stable for a long time, which meets the requirements of superconducting quantum computing chip testing.
Key words : quantum computing；chip testing；RF signal source；channel expansion；power amplifier
