The growing number of cellular devices and the introduction of high-speed data affect the network performance of mobile communication systems. Evaluation of passive intermodulation (PIM) phenomenon in the field of microwaves and mobile communications improve system performance. Typically, the PIM of the device-under-test (DUT) is measured using a set-up that involves two power amplifiers (PA), making it an expensive measurement set-up. This research aims to make PIM measurements cost-effective by using a single PA. Reflected (RFL) PIM distortion measured for two different DUTs, i.e., circulator and a microstrip (MS) line containing radio frequency interference (RFI) shielding gasket, using the presented and standard techniques. The presented PIM analyzer has a residue PIM of $-104.5\mathrm{d}\mathrm{B}\mathrm{m}$. Comparison and error analysis suggested that the presented single PA method is feasible for DUTs having PIM between $-60$ and $-94.5dBm$ at $43dBm$ input power. The residual PIM of the presented analyzer is high compared to the standard PIM analyzers; it is investigated that IM generated by the PA is the leading cause of this higher residual PIM product (RPIM). The proposed method will reduce overall system cost and size; it will also improve the battery efficiency of portable and desktop PIM analyzers.

蜂窝设备的数量不断增加以及高速数据的引入影响着移动通信系统的网络性能。对微波和移动通信领域的无源互调（PIM）现象的评估可改善系统性能。通常，使用涉及两个功率放大器（PA）的设置来测量被测设备（DUT）的PIM，这使其成为昂贵的测量设置。这项研究旨在通过使用单个PA使PIM测量具有成本效益。使用现有技术和标准技术，针对两个不同的DUT（即循环器和包含射频干扰（RFI）屏蔽垫片的微带（MS）线）测量了反射（RFL）PIM失真。所提供的PIM分析仪的残留PIM为$--104.5\mathrm{d}\mathrm{乙}\mathrm{米}$。比较和误差分析表明，所提出的单PA方法对于具有PIM之间的DUT是可行的。$--60$ 和 $--94.5d乙米$ 在 $43d乙米$输入功率。与标准PIM分析仪相比，本分析仪的残留PIM高。据调查，PA生成的IM是导致这种较高残留PIM产品（RPIM）的主要原因。所提出的方法将减少整个系统的成本和尺寸；它还将提高便携式和台式PIM分析仪的电池效率。