Inductive device

Abstract

An inductance device includes a first trace, a second trace, and a main switch. The first trace includes a first sub-trace, a sub-switch, and a second sub-trace. The first sub-trace includes a first line and a second line. The sub-switch is used to switch the first sub-trace to the first line or to switch the first sub-trace to the second line. An end of the second sub-trace coupled to the first sub-trace is coupled to a first node. The second trace includes a third sub-trace and a fourth sub-trace. An end of the fourth sub-trace coupled to the third sub-trace is coupled to a second node. The main switch is coupled between the first node and the second node.

Description

Technical Field

[0001] This disclosure relates to an electronic device, and more particularly to an inductor device. Background Technology

[0002] Radio frequency (RF) devices generate harmonics, third harmonics, and so on, during operation. These harmonics can adversely affect other circuits. For example, the second harmonic of a 2.4GHz circuit can generate a signal of approximately 5GHz, thus adversely affecting the 5GHz circuit.

[0003] The common way to address the impact of these harmonics on circuits is to install external filters to remove them or improve circuit and inductor characteristics. However, external filters can affect the circuit's performance and incur additional costs. Summary of the Invention

[0004] One embodiment of this disclosure relates to an inductor device comprising a first trace, a second trace, and a second switch. The first trace includes a first sub-trace, a first switch, and a second sub-trace. The first sub-trace includes a first line and a second line. The first switch is used to switch the first sub-trace to the first line or to the second line. One end of the second sub-trace is coupled to a first node. The second trace includes a third sub-trace and a fourth sub-trace. One end of the fourth sub-trace is coupled to a second node. The second switch is coupled between the first node and the second node.

[0005] Therefore, according to the technical content of this disclosure, the switch in the inductor device shown in the embodiments of this disclosure can form a low-frequency filtering function, so that low-frequency signals induced by the inductor device cannot pass through while high-frequency signals can pass directly. For example, a low-frequency signal such as the 2.4GHz main operating frequency can be canceled by the folded inductor structure of the inductor device, so the folded inductor structure does not affect the characteristics of the inductor operating frequency. However, if there is a high-frequency signal in the central inductor structure, such as the second harmonic 5GHz, the high-frequency signal can be transmitted through the switch, causing the high-frequency signal to form a looping inductor through the folded inductor structure, thereby inducing a 5GHz harmonic signal more than ten times that of 2.4GHz in the inductor structure claimed in this disclosure. The user can then apply this 5GHz signal in the circuit, for example, by amplifying the signal and then canceling the 5GHz harmonic of the operating frequency. The application of the amplification circuit can be optimized by a skilled circuit designer. In this way, the adverse effects on the 5GHz circuit can be reduced. Furthermore, since this disclosure uses the switching of a switch for filtering, it is equivalent to placing the filter inside the inductor. Therefore, there is no need to place a filter outside the inductor, thereby avoiding the external filter from affecting the performance of the circuit itself or increasing additional costs. Attached Figure Description

[0006] To make the above and other objects, features, advantages and embodiments of this disclosure more apparent and understandable, the accompanying drawings are described below:

[0007] Figure 1 This is a schematic diagram illustrating an inductor device according to an embodiment of the present disclosure.

[0008] Figure 2 An embodiment of this disclosure illustrates a method such as Figure 1 The diagram shows a partial structural schematic of the inductor device.

[0009] Figure 3 This is a schematic diagram illustrating an inductor device according to an embodiment of the present disclosure.

[0010] Figure 4 An embodiment of this disclosure illustrates a method such as Figure 3 The diagram shows a partial structural schematic of the inductor device.

[0011] In accordance with customary practice, the various features and components in the figures are not drawn to scale, but are drawn in a manner that best represents the specific features and components relevant to this disclosure. Furthermore, similar components / parts are referred to by the same or similar element symbols across different figures.

[0012] Symbol Explanation

[0013] 1000, 1000A: Inductor

[0014] 1100, 1100A: First wiring route

[0015] 1110, 1110A, 1120, 1120A: Sub-wiring

[0016] 1111: Line 1

[0017] 1113: Second Line

[0018] 1121: Third Line

[0019] 1123: Line 4

[0020] 1200, 1200A: Second wiring route

[0021] 1210, 1210A, 1220, 1220A: Sub-wiring

[0022] 1300, 1300A, 1400, 1500: Connectors

[0023] 1900: Partial Structure

[0024] C: Capacitor

[0025] SW1, SW2, SW3: Switches

[0026] N1~N5: Nodes Detailed Implementation

[0027] Figure 1 This is a schematic diagram of an inductor device 1000 according to an embodiment of the present disclosure. As shown, the inductor device 1000 includes a first trace 1100, a second trace 1200, and a switch SW1. Furthermore, the first trace 1100 includes a first sub-trace 1110 and a second sub-trace 1120. One end of the first sub-trace 1110 and one end of the second sub-trace 1120 are coupled to a first node N1. The second trace 1200 includes a third sub-trace 1210 and a fourth sub-trace 1220. One end of the third sub-trace 1210 and one end of the fourth sub-trace 1220 are coupled to a second node N2. The switch SW1 is coupled between the first node N1 and the second node N2. Operationally, when a low-frequency signal is generated, the switch SW1 is closed, preventing the low-frequency signal from passing through. On the other hand, when a high-frequency signal is generated, switch SW1 is turned on, causing the high-frequency signal to be induced by the inductor 1000 through switch SW1, forming a one-turn inductor. It should be noted that this disclosure does not... Figure 1 The structure shown is limited and is only used to illustrate one implementation of this disclosure.

[0028] Figure 2 An embodiment of this disclosure illustrates a method such as Figure 1 The diagram shows a partial structure 1900 of the inductor device 1000. As shown, the first sub-trace 1110 includes a first line 1111, a second line 1113, and a switch SW2. The switch SW2 is used to switch the first sub-trace 1110 to the first line 1111 or to the second line 1113. In one embodiment, the length of the first line 1111 is greater than the length of the second line 1113. Therefore, when the first sub-trace 1110 is switched to the first line 1111, the inductance value of the first sub-trace 1110 is larger. Conversely, when the first sub-trace 1110 is switched to the second line 1113, the inductance value of the first sub-trace 1110 is smaller.

[0029] In one embodiment, the first line 1111 includes a plurality of first coils 1111, and the second line 1113 includes a second coil 1113. In detail, the first line 1111 is wound into a plurality of first coils 1111, and the second line 1113 is the second coil 1113 shown in the figure.

[0030] As shown in the figure, switch SW2 is used to switch the first sub-trace 1110 to a plurality of first coils 1111, or switch the first sub-trace 1110 to a second coil 1113. Therefore, when switch SW2 is closed, the signal is transmitted through the plurality of first coils 1111 of the first sub-trace 1110. Conversely, when switch SW2 is open, the signal is transmitted through the second coil 1113 of the first sub-trace 1110. In another embodiment, the plurality of first coils 1111 are located on a first layer and the second coil 1113 is located on a second layer. In one embodiment, the first layer and the second layer are different layers.

[0031] In one embodiment, the second sub-trace 1120 includes a third line 1121, a fourth line 1123, and a switch SW3. The switch SW3 is used to switch the second sub-trace 1120 to the third line 1121 or to the fourth line 1123. In one embodiment, the length of the third line 1121 is greater than the length of the fourth line 1123. Therefore, when the second sub-trace 1120 is switched to the third line 1121, the inductance value of the second sub-trace 1120 is larger. Conversely, when the second sub-trace 1120 is switched to the fourth line 1123, the inductance value of the second sub-trace 1120 is smaller.

[0032] In one embodiment, the third line 1121 includes a plurality of third coils 1121, and the fourth line 1123 includes a fourth coil 1123. In detail, the third line 1121 is wound into a plurality of third coils 1121, and the fourth line 1123 is the fourth coil 1123 shown in the figure.

[0033] As shown in the figure, switch SW3 is used to switch the second sub-trace 1120 to a plurality of third coils 1121, or switch the second sub-trace 1120 to a fourth coil 1123. Therefore, when switch SW3 is closed, the signal is transmitted through the plurality of third coils 1121 of the second sub-trace 1120. Conversely, when switch SW3 is open, the signal is transmitted through the fourth coil 1123 of the second sub-trace 1120. In another embodiment, the plurality of third coils 1121 are located on a first layer and the fourth coil 1123 is located on a second layer. In one embodiment, the first layer and the second layer are different layers.

[0034] In one embodiment, the fourth coil 1123 partially overlaps with a plurality of first coils 1111. In another embodiment, the fourth coil 1123 partially overlaps with a plurality of third coils 1121. In yet another embodiment, the second coil 1113 does not overlap with the plurality of first coils 1111 and the plurality of third coils 1121. In one embodiment, the plurality of first coils 1111 and the plurality of third coils 1121 are arranged alternately. For example, the arrangement order of the plurality of first coils 1111 and the plurality of third coils 1121 may be "first coil 1111, third coil 1121, first coil 1111, third coil 1121, first coil 1111".

[0035] Please see Figure 1 In one embodiment, both the first sub-routes 1110 and the second sub-routes 1120 include a first end and a second end. As shown in the figure, the first end (as above) of the first sub-routes 1110 and the first end (as above) of the second sub-routes 1120 are coupled to a first node N1. Furthermore, both the third sub-routes 1210 and the fourth sub-routes 1220 include a first end and a second end. As shown in the figure, the first end (as above) of the third sub-routes 1210 and the first end (as above) of the fourth sub-routes 1220 are coupled to a second node N2.

[0036] In one embodiment, the first sub-trace 1110 and the second sub-trace 1120 are disposed on a first side of the inductor 1000 (left side in the figure), and the third sub-trace 1210 and the fourth sub-trace 1220 are disposed on a second side of the inductor 1000 (right side in the figure). In another embodiment, the first side and the second side are located on opposite sides of the inductor 1000.

[0037] Please see Figure 2In one embodiment, the inductor 1000 further includes a first connector 1400. This first connector 1400 includes a first end and a second end. As shown, the first end of the first connector 1400 (upper end in the figure) is coupled to a first line 1111 and a second line 1113 at nodes N4 and N5, respectively. The second end of the first connector 1400 (lower end in the figure) is coupled to the first line 1111 of a first sub-trace 1110. In another embodiment, the first connector 1400 is located on a second layer, and the first sub-trace 1110 is located on a first layer.

[0038] In one embodiment, the inductor 1000 further includes a second connector 1500. This second connector 1500 includes a first end and a second end. As shown, the first end of the second connector 1500 (upper end in the figure) is coupled to the third line 1121 and the fourth line 1123 at the same point (N3 in the figure). The second end of the second connector 1500 (lower end in the figure) is coupled to the third line 1121 of the second sub-trace 1120. In another embodiment, the second connector 1500 is located on the second layer, and the second sub-trace 1120 is located on the first layer. It should be noted that this disclosure... Figure 2 Only a portion of the structure 1900 in the upper left corner of the inductor 1000 is shown as an example; however, the same structure 1900 can also be used in the lower left, upper right, and lower right corners of the inductor 1000, thereby generating different circuits by switching the structure 1900. Furthermore, this disclosure does not... Figure 2 The structure shown is limited and is only used to illustrate one implementation of this disclosure.

[0039] Figure 3 This is a schematic diagram illustrating an inductor device 1000A according to an embodiment of this disclosure. Compared to Figure 1 The inductor device 1000 shown is... Figure 3 The inductor 1000A also includes a capacitor C. This capacitor C is coupled between the first node N1 and the second node N2. In one embodiment, the capacitor C is connected in parallel with the switch SW1. It should be noted that... Figure 3 In the embodiments, the component labels are similar to Figure 1 The components labeled in the document have similar structural features, and for the sake of brevity, they will not be described in detail here. Furthermore, this disclosure does not imply... Figure 3 The structure shown is limited and is only used to illustrate one implementation of this disclosure.

[0040] Figure 4 An embodiment of this disclosure illustrates a method such as Figure 3The diagram shows a partial structural schematic of the inductor device 1000A. As shown, capacitor C is connected in parallel with switch SW1 at the first terminal N1 and the second terminal N2. Operationally, when switch SW1 is closed, capacitor C acts as a filter to remove low-frequency signals and allow high-frequency signals to pass. It should be noted that this disclosure does not... Figure 4 The structure shown is limited and is only used to illustrate one implementation of this disclosure.

[0041] As can be seen from the above embodiments of this disclosure, applying this disclosure has the following advantages. The inductor device shown in the embodiments of this disclosure can sense high-frequency signals of the central inductor, such as second harmonics, which, after being amplified by additional circuitry, cancel out the adverse effects of the second harmonics in the original circuit. For example, the switching of the inductor device is mainly used to allow high frequencies to pass through and block low frequencies, thus allowing the same inductor device to have two different signal sensing modes for high and low frequencies. Furthermore, since this disclosure places the filter (e.g., capacitor C) within the integrated circuit (IC), there is no need to place a filter outside the inductor device, thereby avoiding the impact of external filters on the performance of the circuit itself and their additional costs.

Claims

1. An inductor device, comprising: The first routing includes: A first sub-routing includes a first line and a second line, wherein the lengths of the first line and the second line are not equal; A first switch, used to switch the first sub-line to the first line or to switch the first sub-line to the second line; and A second sub-routes, one end of which is coupled to a first node; The second routing includes: The third child's line; and A fourth sub-routes, one end of which is coupled to a second node; and A second switch is coupled between the first node and the second node.

2. The inductor device of claim 1, wherein the first line includes a plurality of first coils, the second line includes a second coil, wherein the first switch is used to switch the first sub-line to the plurality of first coils or to switch the first sub-line to the second coil, wherein the plurality of first coils are located on a first layer and the second coil is located on a second layer.

3. The inductor device of claim 2, wherein the second sub-trace includes a third line and a fourth line, wherein the lengths of the third line and the fourth line are not equal, and wherein the second trace includes: A third switch is used to switch the second sub-line to the third line or to switch the second sub-line to the fourth line; The third line includes a plurality of third coils, and the fourth line includes a fourth coil. The third switch is used to switch the second sub-line to the plurality of third coils or to the fourth coil. The plurality of third coils are located on the first layer and the fourth coil is located on the second layer.

4. The inductor device of claim 3, wherein the fourth coil partially overlaps with the plurality of third coils, and wherein the fourth coil partially overlaps with the plurality of first coils.

5. The inductor device of claim 4, wherein the second coil does not overlap with the plurality of first coils and the plurality of third coils, wherein the plurality of first coils and the plurality of third coils are arranged alternately.

6. The inductor device of claim 3, wherein the first sub-trace comprises: One first end; and One second end; The second sub-routing includes: One first end; and A second end, which is coupled to the first node, is connected to the second end of the first sub-trace. The third sub-routing includes: One first end; and One second end; The fourth sub-routes include: One first end; and A second end, which is coupled to the second end of the third sub-routes, is connected to the second node.

7. The inductor device as claimed in claim 6, wherein the first sub-line and the second sub-line are disposed on a first side of the inductor device, and the third sub-line and the fourth sub-line are disposed on a second side of the inductor device, wherein the first side and the second side are located on opposite sides of the inductor device.

8. The inductor device of claim 7, further comprising: A first connector, comprising: A first terminal, coupled to the first line and the second line; and A second end is coupled to the first sub-trace, wherein the first connector is located on the second layer.

9. The inductor device of claim 8, further comprising: A second connector, comprising: A first end, coupled to the third and fourth lines at the same point; and A second end is coupled to the second sub-trace, wherein the second connector is located on the second layer.

10. The inductor device of claim 9, further comprising: A capacitor is coupled between the first node and the second node, wherein the capacitor is connected in parallel with the second switch.

Images