CN219436962U - Resonator electrode capable of reducing parasitism - Google Patents

Abstract

The utility model relates to an electrode, in particular to a resonator electrode for reducing parasitics, including a wafer body and an electrode layer arranged on the surface of the wafer body. The electrode layer adopts an elliptical electrode or a polygonal electrode. Preferably, the The wafer body adopts a square wafer, and the electrode layer is in the shape of a regular hexagon, and is arranged at the center of the surface of the wafer body. The resonator electrode of the utility model can reduce the parasitic oscillation peak value of the resonator, so as to meet the production requirement.

Description

A resonator electrode with reduced parasitic

technical field

The utility model relates to an electrode, in particular to a resonator electrode for reducing parasitic.

Background technique

In the application of quartz crystal resonators, it is necessary to solve the parasitic problem caused by the unexpected oscillation mode. In theory, it can be avoided by calculating the coupling size of the unexpected oscillation mode, but in practice, due to the miniaturization of the product size and the theoretical The inaccuracy of the model often leads to the generation of unexpected parasitic oscillation modes, especially when quartz resonators are used to filter signals, the requirements for parasitic oscillations are higher, and it is difficult to avoid parasitic oscillations in resonator oscillators designed with existing theories .

The parasitic oscillation of a quartz resonator mainly depends on the dimensions (length, width, thickness) of the resonator (quartz wafer) of the quartz resonator. If it is similar to or equal to the size of other unintended oscillation modes, it will form a coupling in the product Oscillation, which leads to signal transmission at unexpected frequency points, leading to a signal transmission path called parasitic in the industry. This is a fatal flaw in the use of quartz resonators as filters. In product processing, due to the need for signal transmission, a conductive film needs to be evaporated or sputtered in the thickness direction of the quartz wafer as an electrode. When designing a resonator, this conductive film needs to be equivalent to the thickness of the quartz wafer, so that Changing the actual size of the resonator will cause the resonator to produce an unexpected spurious oscillation mode.

Utility model content

In order to solve the above problems, the utility model provides a resonator electrode with reduced parasitics, which can reduce the parasitic oscillation peak value of the resonator to meet production needs.

In order to achieve the above object, the technical scheme that the utility model takes is:

A resonator electrode for reducing parasitics includes a wafer body and an electrode layer arranged on the surface of the wafer body, and the electrode layer adopts an elliptical electrode or a polygonal electrode.

Further, the electrode layer adopts a polygonal electrode, preferably, the electrode layer adopts a regular hexagon.

Further, the wafer body adopts a square wafer, and the electrode layer is arranged at the center of the surface of the wafer body.

The resonator electrode of the utility model can reduce the parasitic oscillation peak value of the resonator through the optimization of the shape structure of the electrode layer, so as to meet the production requirement.

Description of drawings

Other characteristics, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

Fig. 1 is a structural schematic diagram of a specific embodiment of the present invention.

Fig. 2 is a structural schematic diagram of another specific embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Example 1

As shown in Figure 1, a resonator electrode for reducing parasitics includes a wafer body 1 and an electrode layer 2 arranged on the surface of the wafer body 1, the wafer body 1 is square, and the electrode layer 2 is a regular hexagon Shape, located at the center of the wafer body 1.

Example 2

As shown in Figure 2, a resonator electrode that reduces parasitics includes a wafer body 1 and an electrode layer 2 disposed on the surface of the wafer body 1, the wafer body 1 is elliptical, and the electrode layer 2 is positive six. The polygon is located at the center of the wafer body 1.

As shown in the following table, it is the test result data of the parasitic oscillation peak value of the utility model embodiment 1, embodiment 2 and conventional electrodes. It can be seen that the embodiment 1 and embodiment 2 can reduce the resonance by optimizing the shape structure of the electrode layer The peak value of the parasitic oscillation of the device, so that it can meet the production needs.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the industry should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions are only preferred examples of the utility model, and are not used to limit the utility model. Without departing from the utility model Under the premise of the spirit and scope, the utility model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (4)

1. A resonator electrode for reducing parasitics, comprising a wafer body (1) and an electrode layer (2) arranged on the wafer body (1) surface, characterized in that: the electrode layer (2) adopts an oval electrode or polygonal electrodes. 2. A resonator electrode with reduced parasitics according to claim 1, characterized in that: said electrode layer (2) adopts a polygonal electrode. 3. A resonator electrode with reduced parasitics according to claim 2, characterized in that: said electrode layer (2) adopts a regular hexagon. 4. A resonator electrode with reduced parasitics according to claim 3, characterized in that: the wafer body (1) is a square wafer, and the electrode layer (2) is arranged at the center of the surface of the wafer body (1).