US-12627030-B2 - Sensing module and electronic device

Abstract

A sensing module includes a first antenna unit, a second antenna unit, a first inductor and a proximity sensor. The first antenna unit has at least one first communication frequency band, and the second antenna unit has at least one second communication frequency band. The first antenna unit and the second antenna unit are connected in parallel to one end of the first inductor, and the other end of the first inductor is electrically connected to the proximity sensor.

Inventors

• Jia-Le ZHU
• Ching-Wen Chen
• Cheng-Wei Chiang
• Li-Kai KUO

Assignees

• WISTRON NEWEB CORPORATION

Dates

Publication Date

20260512

Application Date

20241216

Priority Date

20231228

Claims (20)

1. 1 . A sensing module comprising: a first antenna unit having at least one first communication frequency band; a second antenna unit having at least one second communication frequency band; a first inductor; and a proximity sensor; wherein the first antenna unit and the second antenna unit are connected in parallel to one end of the first inductor, and the other end of the first inductor is electrically connected to the proximity sensor.
2. 2 . The sensing module according to claim 1 , wherein the first antenna unit comprises a first electrode branch and a first sensing branch, one end of the first electrode branch is an open end, and the first electrode branch, the first sensing branch and the first inductor are connected in series sequentially.
3. 3 . The sensing module according to claim 2 , wherein the second antenna unit comprises a second electrode branch and a second sensing branch, one end of the second electrode branch is an open end, and the second electrode branch, the second sensing branch and the first inductor are connected in series sequentially.
4. 4 . The sensing module according to claim 3 , wherein the first electrode branch and the second electrode branch are perpendicular to each other.
5. 5 . The sensing module according to claim 3 , wherein the second antenna unit further comprises a second inductor, and the second electrode branch, the second inductor and the second sensing branch are connected in series sequentially.
6. 6 . The sensing module according to claim 3 , further comprising: a grounding unit; wherein the second antenna unit further comprises a capacitor electrically connected between the second electrode branch and the grounding unit.
7. 7 . The sensing module according to claim 3 , wherein the second antenna unit further comprises a second feed branch group comprising a long branch and a short branch, a length of the long branch is greater than a length of the short branch, one end of the long branch and one end of the short branch are electrically connected and configured for disposing a second feed point thereon, and the long branch and the second electrode branch are apart from and coupled with each other.
8. 8 . The sensing module according to claim 7 , wherein the second antenna unit further comprises a second grounding branch, and at least one of the long branch and the short branch is apart from and coupled with the second grounding branch.
9. 9 . The sensing module according to claim 2 , wherein the first antenna unit further comprises a first feed branch for disposing a first feed point thereon, and the first feed branch and the first electrode branch are apart from and coupled with each other.
10. 10 . The sensing module according to claim 9 , wherein the first feed branch comprises a first segment and a second segment, and the first segment and the second segment extend in different directions from the first feed point; wherein the first antenna unit further comprises a first grounding branch, and the first segment and the first grounding branch are apart from and coupled with each other.
11. 11 . The sensing module according to claim 2 , further comprising: a switching circuit comprising a switching component, wherein a number of the at least one first communication frequency band is plural, and the switching circuit is configured to switch the plurality of first communication frequency bands; wherein the first antenna unit further comprises a switching branch, and the switching branch is electrically connected between the first electrode branch and the switching circuit.
12. 12 . The sensing module according to claim 11 , wherein the proximity sensor and the switching circuit are integrated into an integrated unit.
13. 13 . The sensing module according to claim 11 , wherein a lower limit of the plurality of first communication frequency bands is lower than a lower limit of the at least one of the second communication frequency band.
14. 14 . The sensing module according to claim 1 , further comprising: a common branch; wherein the first antenna unit comprises a first electrode branch, one end of the first electrode branch is an open end, the second antenna unit comprises a second electrode branch, and one end of the second electrode branch is an open end; wherein the first electrode branch and the second electrode branch are connected in parallel to the common branch, and the common branch is electrically connected to the one end of the first inductor.
15. 15 . The sensing module according to claim 14 , wherein the common branch is a rectangular pad.
16. 16 . The sensing module according to claim 14 , further comprising: a grounding unit; wherein the first antenna unit further comprises a capacitor electrically connected between the first electrode branch and the grounding unit.
17. 17 . The sensing module according to claim 1 , further comprising: a dielectric carrier, wherein the dielectric carrier is a plastic carrier or a circuit board, and the first antenna unit, the second antenna unit, the first inductor and the proximity sensor are disposed on the dielectric carrier.
18. 18 . An electronic device comprising: a sensing module according to claim 14 .
19. 19 . The electronic device according to claim 18 , further comprising: a housing comprising two outer surfaces adjacent to each other, wherein the first electrode branch and the second electrode branch are adjacent to the two outer surfaces, respectively.
20. 20 . The electronic device according to claim 18 , wherein the first antenna unit and the second antenna unit are respectively applied to two different wireless communication systems.

Description

RELATED APPLICATIONS This application claims the benefit of priority to Taiwan Application Number 112151212, filed on Dec. 28, 2023. The entire content of the above identified application is incorporated herein by reference. BACKGROUND Technical Field The present disclosure relates to a sensing module and an electronic device, and more particularly, to a sensing module and an electronic device used for an antenna unit of communication systems. Description of Related Art With the development trend of today's multi-antenna communication systems, electronic devices must not only meet the characteristics of multiple communication systems, multi-antenna and multiple frequency bands, but also comply with SAR (Specific Absorption Rate) regulation relating to the level of electromagnetic waves on human body. Therefore, the circuit design relating to antennas in electronic devices and the utilization of space for antenna installation have become more challenging. In view of the above, there is an urgent need in today's market of electronic devices containing antennas to develop a sensing module and an electronic device that can take into account the radio frequency (RF) characteristics requirements of multiple communication systems, the space utilization of antenna installation, and meet the SAR requirements at the same time. SUMMARY In one aspect, the present disclosure provides a sensing module that includes a first antenna unit, a second antenna unit, a first inductor and a proximity sensor. The first antenna unit has at least one first communication frequency band, and the second antenna unit has at least one second communication frequency band. The first antenna unit and the second antenna unit are connected in parallel to one end of the first inductor, and the other end of the first inductor is electrically connected to the proximity sensor. In another aspect, the present disclosure provides an electronic device that includes the aforementioned sensing module. The sensing module further includes a common branch. The first antenna includes a first electrode branch, and one end of the first electrode branch is an open end. The second antenna unit includes a second electrode branch, and one end of the second electrode branch is an open end. The first electrode branch and the second electrode branch are connected in parallel to the common branch, and the common branch is electrically connected to the one end of the first inductor. BRIEF DESCRIPTION OF THE DRAWINGS The present disclosure can be more fully understood by reading the following detailed description of the embodiment, with reference made to the accompanying drawings as follows: FIG. 1A is a schematic view of a sensing module according to a first embodiment of the present disclosure. FIG. 1B is a schematic view illustrating a signal path used for communication in the sensing module shown in FIG. 1A. FIG. 1C is a schematic view illustrating a signal path used for proximity sensing in the sensing module shown in FIG. 1A. FIG. 2 is a schematic view of a sensing module according to a second embodiment of the present disclosure. FIG. 3 is a schematic view of a sensing module according to a third embodiment of the present disclosure. FIG. 4 is a schematic view of an electronic device according to a fourth embodiment of the present disclosure. DETAILED DESCRIPTION The present disclosure is more particularly described in the following examples that are intended as illustrative only since numerous modifications and variations therein will be apparent to those skilled in the art. Like numbers in the drawings indicate like components throughout the views. As used in the description herein and throughout the claims that follow, unless the context clearly dictates otherwise, the meaning of “a”, “an”, and “the” includes plural reference, and the meaning of “in” includes “in” and “on”. Titles or subtitles can be used herein for the convenience of a reader, which shall have no influence on the scope of the present disclosure. The terms used herein generally have their ordinary meanings in the art. In the case of conflict, the present document, including any definitions given herein, will prevail. The same thing can be expressed in more than one way. Alternative language and synonyms can be used for any term(s) discussed herein, and no special significance is to be placed upon whether a term is elaborated or discussed herein. A recital of one or more synonyms does not exclude the use of other synonyms. The use of examples anywhere in this specification including examples of any terms is illustrative only, and in no way limits the scope and meaning of the present disclosure or of any exemplified term. Likewise, the present disclosure is not limited to various embodiments given herein. Numbering terms such as “first”, “second” or “third” can be used to describe various components, signals or the like, which are for distinguishing one component/signal from another one only,