Test method of frequency response based on diamond surface acoustic wave devices

Abstract

In order to reduce the noises affixed to the signals when testing high frequency devices, a single-port test mode (S₁₁) is used to test frequency response of high frequency (GHz) and dual-port surface acoustic wave devices (SAWDs) in this paper. The feasibility of the test is proved by simulating the Fabry-Perot model. The frequency response of the high-frequency dual-port resonant-type diamond SAWD is measured by S11 and the dual-port test mode (S₂₁), respectively. The results show that the quality factor of the device is 51.29 and the 3 dB bandwidth is 27.8 MHz by S11-mode measurement, which is better than the S₂₁ mode, and is consistent with the frequency response curve by simulation.

Keywords

Frequency Response / Output Port / Frequency Response Curve / Mobile Communication System / Bulk Acoustic Wave

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