Acoustic surface wave resonator having high Q value and one port applied to wireless temperature sensor

A wireless temperature and surface acoustic wave technology, applied to electrical components, impedance networks, etc., to achieve low loss, low parasitic, and strong practicability

Active Publication Date: 2016-01-13
SALISENSE TECH
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve some problems existing in the performance of single-ended surface acoustic wave resonators used in wireless temperature sensors, in order to achieve small volume, high Q value, low loss and low parasitic performance, the purpose of the present invention is to provide a A single-end

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Acoustic surface wave resonator having high Q value and one port applied to wireless temperature sensor
  • Acoustic surface wave resonator having high Q value and one port applied to wireless temperature sensor
  • Acoustic surface wave resonator having high Q value and one port applied to wireless temperature sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The present invention will be further described below in conjunction with the embodiments, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art according to the methods and technical parameters involved in this embodiment without making creative efforts belong to the scope of protection of the present invention.

[0020] A specific embodiment of the present invention provides a high-Q value single-ended surface acoustic wave resonator applied to a wireless temperature sensor, such as figure 1 As shown, it includes an interdigital transducer 4 fabricated on a piezoelectric substrate 1 and two reflectors 2 and 3 distributed on both sides of the interdigital transducer 4 .

[0021] ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Frequency temperature coefficientaaaaaaaaaa
Login to view more

Abstract

The invention discloses an acoustic surface wave resonator having high Q value and one port applied to a wireless temperature sensor. The acoustic surface wave resonator comprises an interdigital transducer, two reflectors and a piezoelectric substrate, wherein the two reflectors are respectively distributed at two sides of the interdigital transducer; the interdigital transducer is arranged on the piezoelectric substrate in a manner of withdrawing and weighting a cosine function; and the two reflectors are arranged on the piezoelectric substrate in the form of a groove. The piezoelectric substrate is a quartz crystal, which is rotatably cut in 0-30-degree around a Y axis and transmitted along the X direction; the interdigital transducer is an aluminium electrode, the duty ratio of which is 1.3-1.5; the performances of small volume, high Q value, low loss, low parasitism and the like can be realized; the Q value is increased; loss of devices is reduced; and the acoustic surface wave resonator has high practicability.

Description

technical field [0001] The invention relates to a surface acoustic wave resonator, in particular to a high-Q surface acoustic wave single-ended pair resonator applied to a wireless temperature sensor, and belongs to the technical field of semiconductor plane production. Background technique [0002] Surface-acoustic-wave resonator (surface-acoustic-wave), the main working principle of SAW surface acoustic wave components is to use the piezoelectric properties of piezoelectric materials, and use the input and output transducers (Transducer) to convert the input signal of the electric wave into mechanical energy. After processing, the mechanical energy is converted into electrical signals to achieve the goal of filtering unnecessary signals and noise and improving the quality of receiving signals; it is widely used in various wireless communication systems, televisions, video recorders and global satellites on the positioning system receiver. [0003] Its main function is t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H03H9/25
Inventor 倪斌
Owner SALISENSE TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap