Filter circuit structure and wireless device

Abstract

The utility model relates to the technical field of filtering, and discloses a filter circuit structure and wireless equipment. The filter circuit structure comprises a first element, a second element, a third element, a fourth element, a fifth element, a sixth element, a first capacitor and a second capacitor, the first element, the second element, the first capacitor and the second capacitor are sequentially connected, the first element is connected with a signal input end, and the second capacitor is connected with a signal output end; one end of the third element is connected to the connecting end of the first element and the second element, and the other end is grounded; one end of the fourth element is connected to the connecting end of the second element and the first capacitor, and the other end is grounded; one end of the fifth element is connected to the connecting end of the first capacitor and the second capacitor, the other end of the fifth element is connected to one end of the sixth element, and the other end of the sixth element is grounded. Therefore, multiplexing of the filter circuit structure can be achieved, discrete inductance and capacitance elements are used as needed, flexible replacement and debugging can be achieved, and cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of filtering electronics technology, and in particular to a filtering circuit structure and a wireless device. Background Technology

[0002] Currently, the RF circuits of existing Wi-Fi products generally include both 2.4GHz and 5GHz bands, resulting in coexistence and harmonic issues between the two bands. A common solution to address these issues is to use integrated low-pass or band-pass filters, typically placing one filter at the common terminal of the TX and RX signals. This design requires a filter on each antenna.

[0003] Existing WiFi products typically include multiple channels in the 2.4G and 5G bands, each requiring a filter (for example, if there are 4 channels, at least 4 filters are needed), which increases the cost of WiFi products. In addition, different manufacturers use different types of filters with different packages, making it inconvenient for later product debugging and replacement. Furthermore, different filters require different matching filter circuit structures, making the designed filter circuit structures unusable. Utility Model Content

[0004] The present invention aims to provide a filter circuit structure and a wireless device, thereby solving the problem that the existing filter circuit structures cannot be reused due to the different filter circuit structures required to match different filters.

[0005] To solve the above-mentioned technical problems, a first aspect of this utility model provides a filter circuit structure, including: a first element, a second element, a third element, a fourth element, a fifth element, a sixth element, a first capacitor, and a second capacitor, wherein:

[0006] The first element, the second element, the first capacitor, and the second capacitor are connected in sequence. The first element is connected to the signal input terminal, and the second capacitor is connected to the signal output terminal.

[0007] One end of the third element is connected to the connection point between the first element and the second element, and the other end of the third element is grounded.

[0008] One end of the fourth element is connected to the connection terminal between the second element and the first capacitor, and the other end of the fourth element is grounded.

[0009] One end of the fifth element is connected to the connection terminal of the first capacitor and the second capacitor, and the other end of the fifth element is connected to one end of the sixth element, and the other end of the sixth element is grounded.

[0010] Accordingly, a second aspect of this utility model also provides a filter circuit structure, including: a control unit, an eleventh element, a twelfth element, a thirteenth element, a fourteenth element, a fifteenth element, a sixteenth element, a first switching element, a second switching element, a third switching element, a fourth switching element, a fifth switching element, an eleventh capacitor, and a twelfth capacitor, wherein:

[0011] The eleventh element, the twelfth element, the eleventh capacitor, and the twelfth capacitor are connected in sequence. The eleventh element is connected to the signal input terminal, and the twelfth capacitor is connected to the signal output terminal.

[0012] The first switching element is connected in parallel with the eleventh element, and the second switching element is connected in parallel with the twelfth element;

[0013] One end of the third switching element is connected to the connection end of the eleventh and twelfth elements, and the other end of the third switching element is connected to one end of the thirteenth element, and the other end of the thirteenth element is grounded;

[0014] One end of the fourth switching element is connected to the connection terminal of the twelfth element and the eleventh capacitor, and the other end of the fourth switching element is connected to one end of the fourteenth element, and the other end of the fourteenth element is grounded.

[0015] One end of the fifth switching element is connected to the connection terminal of the eleventh capacitor and the twelfth capacitor, the other end of the fifth switching element is connected to one end of the fifteenth element, the other end of the fifteenth element is connected to one end of the sixteenth element, and the other end of the sixteenth element is grounded.

[0016] The control unit is connected to the first switch element, the second switch element, the third switch element, the fourth switch element, and the fifth switch element respectively, and is used to output the first control signal, the second control signal, the third control signal, the fourth control signal, and the fifth control signal respectively to control the opening or closing of the first switch element, the second switch element, the third switch element, the fourth switch element, and the fifth switch element.

[0017] Accordingly, a third aspect of the present invention provides a wireless device, including the filtering circuit structure described in the first aspect of the present invention or the filtering circuit structure described in the first aspect of the present invention.

[0018] Compared with existing technologies, this utility model provides a filter circuit structure and a wireless device. The filter circuit structure includes a first element, a second element, a third element, a fourth element, a fifth element, a sixth element, a first capacitor, and a second capacitor. The first element, second element, first capacitor, and second capacitor are connected sequentially. The first element is connected to the signal input terminal, and the second capacitor is connected to the signal output terminal. One end of the third element is connected to the connection terminal between the first and second elements, and the other end is grounded. One end of the fourth element is connected to the connection terminal between the second element and the first capacitor, and the other end is grounded. One end of the fifth element is connected to the connection terminal between the first and second capacitors, and the other end is connected to one end of the sixth element, which is also grounded. Therefore, this utility model can realize multiple (e.g., six) filter circuit structures by utilizing different combinations of the first, second, third, fourth, fifth, and sixth elements. This allows for the reuse of filter circuit structures, enabling different filters to reuse the same structure, avoiding design oversights, and allowing for flexible replacement and debugging. It also eliminates the need to consider different types of filter packages from different manufacturers, saving on the cost of integrated filters. This solves the problem that different existing filters require different filter circuit structures, making it impossible to reuse the designed filter circuit structure, as well as the problem of coexistence of 2.4G and 5G frequency bands and harmonics. Attached Figure Description

[0019] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0020] Figure 1 This is a schematic diagram of the first filter circuit structure provided by this utility model;

[0021] Figure 2 This is a schematic diagram of the first type of filter circuit structure provided by this utility model, constructed as a low-pass filter circuit structure;

[0022] Figure 3 This is a simulation result diagram of the first filter circuit structure provided by this utility model as a low-pass filter circuit structure in the 5G band;

[0023] Figure 4 This is a simulation result diagram of the first filter circuit structure provided by this utility model as a low-pass filter circuit structure in the 2.4G frequency band;

[0024] Figure 5 This is a schematic diagram of the first filter circuit structure provided by this utility model, which is constructed as an LC band-stop filter circuit structure;

[0025] Figure 6 This is a first simulation result diagram of the first filter circuit structure provided by this utility model, which is constructed as an LC band-stop filter circuit structure;

[0026] Figure 7 This is a second simulation result diagram of the first filter circuit structure provided by this utility model, which is constructed as an LC band-stop filter circuit structure;

[0027] Figure 8 This is a schematic diagram of the first type of filter circuit structure provided by this utility model, constructed as a high-pass filter circuit structure;

[0028] Figure 9 This is a simulation result diagram of the first filter circuit structure provided by this utility model constructed as a high-pass filter circuit structure;

[0029] Figure 10 This is a schematic diagram of the first type of filter circuit structure provided by this utility model, which is constructed as an L-shaped low-pass filter circuit structure;

[0030] Figure 11 This is another schematic diagram of the first filter circuit structure provided by this utility model, which is constructed as an L-shaped low-pass filter circuit structure;

[0031] Figure 12 This is a simulation result diagram of the first filter circuit structure provided by this utility model, which is constructed as an L-shaped low-pass filter circuit structure;

[0032] Figure 13 This is a schematic diagram of the second filter circuit structure provided by this utility model;

[0033] Figure 14 This is a schematic diagram of the second filter circuit structure provided by this utility model, constructed as a low-pass filter circuit structure;

[0034] Figure 15 This is a schematic diagram of the second type of filter circuit structure provided by this utility model, which is constructed as an LC band-stop filter circuit structure;

[0035] Figure 16 This is a schematic diagram of the second type of filter circuit structure provided by this utility model, constructed as a high-pass filter circuit structure;

[0036] Figure 17 This is a schematic diagram of the second type of filter circuit structure provided by this utility model, which is constructed as an L-shaped low-pass filter circuit structure;

[0037] Figure 18 This is another schematic diagram of the second type of filter circuit structure provided by this utility model, which is constructed as an L-shaped low-pass filter circuit structure. Detailed Implementation

[0038] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "bottom," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0040] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0041] In one embodiment, such as Figure 1 As shown, this utility model provides a filter circuit structure 10, including: a first element Y1, a second element Y2, a third element Y3, a fourth element Y4, a fifth element Y5, a sixth element Y6, a first capacitor C1, and a second capacitor C2, wherein:

[0042] The first element Y1, the second element Y2, the first capacitor C1 and the second capacitor C2 are connected in sequence. The first element Y1 is connected to the signal input terminal RF_IN and the second capacitor C2 is connected to the signal output terminal RF_OUT.

[0043] One end of the third element Y3 is connected to the connection terminal J1 between the first element Y1 and the second element Y2, and the other end of the third element Y3 is grounded.

[0044] One end of the fourth element Y4 is connected to the connection terminal J2 between the second element Y2 and the first capacitor C1, and the other end of the fourth element Y4 is grounded;

[0045] One end of the fifth element Y5 is connected to the connection terminal J3 between the first capacitor C1 and the second capacitor C2, and the other end of the fifth element Y5 is connected to one end of the sixth element Y6, and the other end of the sixth element Y6 is grounded.

[0046] In this embodiment, a filter circuit structure is provided, including a first element, a second element, a third element, a fourth element, a fifth element, a sixth element, a first capacitor, and a second capacitor. The first element, second element, first capacitor, and second capacitor are connected sequentially. The first element is connected to the signal input terminal, and the second capacitor is connected to the signal output terminal. One end of the third element is connected to the connection terminal between the first and second elements, and the other end is grounded. One end of the fourth element is connected to the connection terminal between the second element and the first capacitor, and the other end is grounded. One end of the fifth element is connected to the connection terminal between the first and second capacitors, and the other end is connected to one end of the sixth element, which is also grounded. Therefore, this invention can realize multiple (e.g., six) filter circuit structures by utilizing different combinations of the first, second, third, fourth, fifth, and sixth elements. This allows for the reuse of filter circuit structures, enabling different filters to reuse the same structure, avoiding design oversights, and allowing for flexible replacement and debugging. It also eliminates the need to consider different types of filter packages from different manufacturers, saving on the cost of integrated filters. This solves the problem that different existing filters require different filter circuit structures, making it impossible to reuse the designed filter circuit structure, as well as the problem of coexistence of 2.4G and 5G frequency bands and harmonics.

[0047] In one embodiment, such as Figure 2 As shown, the first element Y1 includes a wire, the second element Y2 includes a first inductor L1, the third element Y3 includes a third capacitor C3, the fourth element Y4 includes a fourth capacitor C4, and the fifth element Y5 and the sixth element Y6 are disconnected and not connected to the filter circuit structure.

[0048] Specifically, the first element Y1, the first inductor L1, the first capacitor C1 and the second capacitor C2 are connected in sequence. The first element Y1 is connected to the signal input terminal RF_IN and the second capacitor C2 is connected to the signal output terminal RF_OUT.

[0049] One end of the third capacitor C3 is connected to the connection terminal J1 between the first element Y1 and the first inductor L1, and the other end of the third capacitor C3 is grounded.

[0050] One end of the fourth capacitor C4 is connected to the connection terminal J2 between the first inductor L1 and the first capacitor C1, and the other end of the fourth capacitor C4 is grounded.

[0051] The fifth element Y5 and the sixth element Y6 are disconnected from the filter circuit structure, thereby constructing the filter circuit structure 10 as a Π-type low-pass filter circuit structure.

[0052] The third capacitor C3, the fourth capacitor C4, and the first inductor L1 work together to attenuate high-frequency signals while allowing low-frequency signals to pass through smoothly, thus forming a low-pass filter circuit structure.

[0053] For example, the capacitance values ​​of the third capacitor C3 and the fourth capacitor C4 are 0.2-0.5pF, and the inductance value of the first inductor L1 is 0.8-2.2nH. The above-mentioned filter circuit structure 10 constitutes a Π-type 5G low-pass filter circuit structure.

[0054] For example, when the capacitance values ​​of the third capacitor C3 and the fourth capacitor C4 are 0.2pF, and the inductance value of the first inductor L1 is 1.5nH, the above-mentioned Π-type 5G low-pass filter circuit structure is simulated using ADS software. The simulation results are as follows: Figure 3 As shown, the expected results can be obtained under ideal conditions, namely, the insertion loss in 5G band is less than 0.5dB and the suppression of the second and third harmonics is greater than 10dB.

[0055] For example, the capacitance values ​​of the third capacitor C3 and the fourth capacitor C4 are 1.0-1.8pF, and the inductance value of the first inductor L1 is 2.0-3.9nH. The above-mentioned filter circuit structure 10 constitutes a Π-type 2.4G low-pass filter circuit structure.

[0056] For example, when the capacitance values ​​of the third capacitor C3 and the fourth capacitor C4 are 1.5pF, and the inductance value of the first inductor L1 is 3.3nH, the above-mentioned Π-type 2.4G low-pass filter circuit structure is simulated using ADS software. The simulation results are as follows: Figure 4 As shown, the expected results can be obtained under ideal conditions, namely, the in-band insertion loss of 2.4G is less than 0.5dB, the suppression of the second and third harmonics is greater than 15dB, and the suppression of 5G is greater than 15dB. It is suitable for situations where 5G has general interference with 2.4G RX.

[0057] In this embodiment, by using discrete inductor and capacitor components for the first, second, third, and fourth elements, the filter circuit structure is constructed as a Π-type low-pass filter circuit structure. This allows for flexible replacement and debugging, eliminating the need to consider different types of filter packages from different manufacturers, thus saving on the cost of integrated filters. This solves the problem of existing filters requiring different matching filter circuit structures, which prevents the reuse of designed filter circuit structures, and also addresses the issues of coexistence and harmonics between the 2.4G and 5G frequency bands.

[0058] In one embodiment, such as Figure 5As shown, the first element Y1 and the second element Y2 both include wires, the fifth element Y5 includes the second inductor L2, the sixth element Y6 includes the fifth capacitor C5, and the third element Y3 and the fourth element Y4 are disconnected and not connected to the filter circuit structure.

[0059] Specifically, the first element Y1, the second element Y2, the first capacitor C1 and the second capacitor C2 are connected in sequence. The first element Y1 is connected to the signal input terminal RF_IN, and the second capacitor C2 is connected to the signal output terminal RF_OUT.

[0060] One end of the second inductor L2 is connected to the connection terminal J3 between the first capacitor C1 and the second capacitor C2, and the other end of the second inductor L2 is connected to one end of the fifth capacitor C5. The other end of the fifth capacitor C5 is grounded.

[0061] The third element Y3 and the fourth element Y4 are disconnected and not connected to the filter circuit structure, thereby constructing the filter circuit structure 10 as an LC band-stop filter circuit structure.

[0062] For example, the inductance value of the second inductor L2 is 1.5-2.4nH, and the capacitance value of the fifth capacitor C5 is 1.5-2.7pF. The above-mentioned filter circuit structure 10 constitutes an LC band-stop filter circuit structure.

[0063] For example, when the inductance of the second inductor L2 is 2.0nH and the capacitance of the fifth capacitor C5 is 2.3pF, the above LC band-stop filter circuit structure is simulated using ADS software. The simulation results are as follows: Figure 6 As shown, the expected effect can be obtained under ideal conditions, that is, the suppression of 2.4G is greater than 25dB, which is suitable for situations where 2.4G seriously interferes with 5G RX.

[0064] For example, the inductance value of the second inductor L2 is 1.5-2.2nH, and the capacitance value of the fifth capacitor C5 is 0.5-0.8pF. The above-mentioned filter circuit structure 10 constitutes an LC band-stop filter circuit structure.

[0065] For example, when the inductance of the second inductor L2 is 1.8nH and the capacitance of the fifth capacitor C5 is 0.6pF, the above LC band-stop filter circuit structure is simulated using ADS software. The simulation results are as follows: Figure 7 As shown, the expected effect can be achieved under ideal conditions, that is, the suppression of 2.4G is greater than 25dB. It is suitable for situations where 2.4G seriously interferes with 5G RX. In this case, the LC band-stop filter circuit structure can also be called a 2.4G double frequency limiting circuit and a circuit to prevent 5G interference with 2.4G RX.

[0066] In this embodiment, by using discrete inductor and capacitor components in the first, second, fifth, and sixth elements, the filter circuit structure is constructed as an LC band-stop filter circuit structure. This allows for flexible replacement and debugging, eliminating the need to consider different types of filter packages from different manufacturers, thus saving on the cost of integrated filters. This solves the problem of existing filters requiring different matching filter circuit structures, which prevents the reuse of designed filter circuit structures, and also addresses the issues of coexistence and harmonics between the 2.4G and 5G frequency bands.

[0067] In one embodiment, such as Figure 8 As shown, the first element Y1 includes a wire, the second element Y2 includes a third inductor L3, the third element Y3 includes a fourth inductor L4, the fourth element Y4 includes a fifth inductor L5, and the fifth element Y5 and the sixth element Y6 are disconnected and not connected to the filter circuit structure.

[0068] Specifically, the first element Y1, the third inductor L3, the first capacitor C1 and the second capacitor C2 are connected in sequence. The first element Y1 is connected to the signal input terminal RF_IN, and the second capacitor C2 is connected to the signal output terminal RF_OUT.

[0069] One end of the fourth inductor L4 is connected to the connection terminal J1 between the first element Y1 and the third inductor L3, and the other end of the fourth inductor L4 is grounded.

[0070] One end of the fifth inductor L5 is connected to the connection terminal J2 between the third inductor L3 and the first capacitor C1, and the other end of the fifth inductor L5 is grounded.

[0071] The fifth element Y5 and the sixth element Y6 are disconnected from the filter circuit structure, thereby enabling the filter circuit structure 10 to be constructed as a high-pass filter circuit structure.

[0072] For example, the inductance value of the third inductor L3 is 0.6-1.2nH, and the inductance values ​​of the fourth inductor L4 and the fifth inductor L5 are 2.4-5.6nH. The above-mentioned filter circuit structure 10 constitutes a 5G high-pass filter circuit structure.

[0073] For example, when the inductance value of the third inductor L3 is 0.6nH, and the inductance values ​​of the fourth inductor L4 and the fifth inductor L5 are 5.1nH, the above 5G high-pass filter circuit structure is simulated using ADS software. The simulation results are as follows: Figure 9 As shown, the expected effect can be obtained under ideal conditions, that is, it can suppress 2.4G to a certain extent and can be used in cases where 2.4G has a slight interference with 5G RX.

[0074] In this embodiment, by using discrete inductor and capacitor components in the first, second, third, and fourth elements, the filter circuit structure is constructed as a high-pass filter circuit structure. This allows for flexible replacement and debugging, eliminating the need to consider different types of filter packages from different manufacturers, thus saving on the cost of integrated filters. This solves the problem of existing filters requiring different matching filter circuit structures, which prevents the reuse of designed filter circuit structures, and also addresses the issues of coexistence and harmonics between the 2.4G and 5G frequency bands.

[0075] In one embodiment, such as Figure 10 As shown, the first element Y1 includes a wire, the second element Y2 includes a sixth inductor L6, the fourth element Y4 includes a sixth capacitor C6, and the third element Y3, the fifth element Y5, and the sixth element Y6 are disconnected and not connected to the filter circuit structure.

[0076] Specifically, the first element Y1, the sixth inductor L6, the first capacitor C1 and the second capacitor C2 are connected in sequence. The first element Y1 is connected to the signal input terminal RF_IN, and the second capacitor C2 is connected to the signal output terminal RF_OUT.

[0077] One end of the sixth capacitor C6 is connected to the connection terminal J2 between the sixth inductor L6 and the first capacitor C1, and the other end of the sixth capacitor C6 is grounded.

[0078] The third element Y3, the fifth element Y5, and the sixth element Y6 are disconnected from the filter circuit structure, thereby constructing the filter circuit structure 10 as an L-shaped low-pass filter circuit structure.

[0079] For example, the inductance value of the sixth inductor L6 is 1.8-3.9nH, and the capacitance value of the sixth capacitor C6 is 0.5-0.8pF. The above-mentioned filter circuit structure 10 constitutes an L-shaped low-pass filter circuit structure.

[0080] For example, when the inductance of the sixth inductor L6 is 1.8nH and the capacitance of the sixth capacitor C6 is 0.6pF, the above L-shaped low-pass filter circuit structure is simulated using ADS software. The simulation results are as follows: Figure 12 As shown, the expected results can be obtained under ideal conditions, namely, the in-band insertion loss of 2.4G is less than 1dB, the suppression of the second and third harmonics is greater than 5dB, and the suppression of 5G is greater than 5dB. It is suitable for situations where 5G has general interference with 2.4G RX.

[0081] like Figure 11 As shown, the first element Y1 includes the seventh inductor L7, the second element Y2 includes a wire, the third element Y3 includes the seventh capacitor C7, and the fourth element Y4, the fifth element Y5, and the sixth element Y6 are disconnected and not connected to the filter circuit structure.

[0082] Specifically, the seventh inductor L7, the second element Y2, the first capacitor C1 and the second capacitor C2 are connected in sequence. The seventh inductor L7 is connected to the signal input terminal RF_IN, and the second capacitor C2 is connected to the signal output terminal RF_OUT.

[0083] One end of the seventh capacitor C7 is connected to the connection terminal J1 between the seventh inductor L7 and the second element Y2, and the other end of the seventh capacitor C7 is grounded.

[0084] The fourth element Y4, the fifth element Y5, and the sixth element Y6 are disconnected from the filter circuit structure, thereby constructing the filter circuit structure 10 as an L-shaped low-pass filter circuit structure.

[0085] For example, the inductance value of the seventh inductor L7 is 1.8-3.9nH, and the capacitance value of the seventh capacitor C7 is 0.5-0.8pF. The above-mentioned filter circuit structure 10 constitutes an L-shaped low-pass filter circuit structure.

[0086] For example, when the inductance of the seventh inductor L7 is 1.8nH and the capacitance of the seventh capacitor C7 is 0.6pF, the above L-shaped low-pass filter circuit structure is simulated using ADS software. The simulation results are as follows: Figure 12 As shown, the expected results can be obtained under ideal conditions, namely, the insertion loss of 2.4G in the band is less than 1dB, the suppression of the second and third harmonics is greater than 5dB, and the suppression of 5G is greater than 5dB. It is suitable for situations where 5G has general interference with 2.4G RX.

[0087] In this embodiment, by using discrete inductor and capacitor components for the first, second, third, and fourth elements, the filter circuit structure is constructed as an L-shaped low-pass filter circuit. This allows for flexible replacement and adjustment, eliminating the need to consider different filter packages from different manufacturers, thus saving on the cost of integrated filters. This solves the problem of existing filters requiring different matching filter circuit structures, which prevents the reuse of designed filter circuit structures, and also addresses the issues of coexistence and harmonics between the 2.4G and 5G frequency bands.

[0088] Based on the same concept, such as Figure 13 As shown, this utility model also provides a filter circuit structure 20, including: a control unit 21, an eleventh element Y11, a twelfth element Y12, a thirteenth element Y13, a fourteenth element Y14, a fifteenth element Y15, a sixteenth element Y16, a first switching element K1, a second switching element K2, a third switching element K3, a fourth switching element K4, a fifth switching element K5, an eleventh capacitor C11, and a twelfth capacitor C12, wherein:

[0089] Eleventh component Y11, twelfth component Y12, eleventh capacitor C11 and twelfth capacitor C12 are connected in sequence. Eleventh component Y11 is connected to the signal input terminal RF_IN and twelfth capacitor C12 is connected to the signal output terminal RF_OUT.

[0090] The first switching element K1 is connected in parallel with the eleventh element Y11, and the second switching element K2 is connected in parallel with the twelfth element Y12;

[0091] One end of the third switching element K3 is connected to the connection terminal J4 between the eleventh element Y11 and the twelfth element Y12, and the other end of the third switching element K3 is connected to one end of the thirteenth element Y13, and the other end of the thirteenth element Y13 is grounded.

[0092] One end of the fourth switching element K4 is connected to the connection terminal J4 of the twelfth element Y12 and the eleventh capacitor C11, and the other end of the fourth switching element K4 is connected to one end of the fourteenth element Y14, and the other end of the fourteenth element Y14 is grounded.

[0093] One end of the fifth switching element K5 is connected to the connection terminal J6 of the eleventh capacitor C11 and the twelfth capacitor C12. The other end of the fifth switching element K5 is connected to one end of the fifteenth element Y15. The other end of the fifteenth element Y15 is connected to one end of the sixteenth element Y16. The other end of the sixteenth element Y16 is grounded.

[0094] The control unit 21 is connected to the first switch element K1, the second switch element K2, the third switch element K3, the fourth switch element K4, and the fifth switch element K5 respectively, and is used to output the first control signal CTRL1, the second control signal CTRL2, the third control signal CTRL3, the fourth control signal CTRL4, and the fifth control signal CTRL5 respectively to control the opening or closing of the first switch element K1, the second switch element K2, the third switch element K3, the fourth switch element K4, and the fifth switch element K5.

[0095] In this embodiment, a filter circuit structure is provided, including a control unit, an eleventh element, a twelfth element, a thirteenth element, a fourteenth element, a fifteenth element, a sixteenth element, a first switching element, a second switching element, a third switching element, a fourth switching element, a fifth switching element, an eleventh capacitor, and a twelfth capacitor. The eleventh element, twelfth element, eleventh capacitor, and twelfth capacitor are connected sequentially. The eleventh element is connected to the signal input terminal, and the twelfth capacitor is connected to the signal output terminal. The first switching element is connected in parallel with the eleventh element, and the second switching element is connected in parallel with the twelfth element. One end of the third switching element is connected to the connection terminal of the eleventh and twelfth elements, and the other end of the third switching element is connected to one end of the thirteenth element, with the other end of the thirteenth element grounded. One end of the fourth switching element is connected to the connection terminal of the twelfth element and the eleventh capacitor; the other end of the fourth switching element is connected to one end of the fourteenth element, and the other end of the fourteenth element is grounded. One end of the fifth switching element is connected to the connection terminal of the eleventh capacitor and the twelfth capacitor; the other end of the fifth switching element is connected to one end of the fifteenth element; the other end of the fifteenth element is connected to one end of the sixteenth element, and the other end of the sixteenth element is grounded. The control unit is connected to the first, second, third, fourth, and fifth switching elements respectively, and is used to output the first, second, third, fourth, and fifth control signals to control the opening or closing of the first, second, third, fourth, and fifth switching elements. Therefore, by utilizing different combinations of the eleventh, twelfth, thirteenth, fourteenth, fifteenth, and sixteenth elements, this invention can realize multiple (e.g., six) filter circuit structures, achieving filter circuit structure reuse. Different filters can reuse the filter circuit structure, avoiding design oversights, enabling flexible replacement and debugging, eliminating the need to consider different types of filter packages from different manufacturers, and saving the cost of integrated filters. This solves the problem that different existing filters require different filter circuit structures to match, which makes it impossible to reuse the designed filter circuit structure.

[0096] In one embodiment, the filter circuit structure 20 includes: a first switching element K1, a second switching element K2, a third switching element K3, a fourth switching element K4, and a fifth switching element K5, wherein:

[0097] The first switching element K1 and the eleventh element Y11 are connected in parallel and are used to control whether the eleventh element Y11 is connected to the filter circuit structure 20 according to the first control signal CTRL1 output by the control unit 21. When the first control signal CTRL1 output by the control unit 21 is to open the first switching element K1, the first switching element K1 is open and the eleventh element Y11 is connected to the filter circuit structure 20. When the first control signal CTRL1 output by the control unit 21 is to close the first switching element K1, the first switching element K1 is closed and the eleventh element Y11 is not connected to the filter circuit structure 20.

[0098] The second switching element K2 is connected in parallel with the twelfth element Y12, and is used to control whether the twelfth element Y12 is connected to the filter circuit structure 20 according to the second control signal CTRL2 output by the control unit 21. When the second control signal CTRL2 output by the control unit 21 is to open the second switching element K2, the second switching element K2 is open and the twelfth element Y12 is connected to the filter circuit structure 20. When the second control signal CTRL2 output by the control unit 21 is to close the second switching element K2, the second switching element K2 is closed and the twelfth element Y12 is not connected to the filter circuit structure 20.

[0099] The third switching element K3 is used to control whether the thirteenth element Y13 is connected to the filter circuit structure 20 according to the third control signal CTRL3 output by the control unit 21; when the third control signal CTRL3 output by the control unit 21 is to open the third switching element K3, the third switching element K3 is open and the thirteenth element Y13 is not connected to the filter circuit structure 20; when the third control signal CTRL3 output by the control unit 21 is to close the third switching element K3, the third switching element K3 is closed and the thirteenth element Y13 is connected to the filter circuit structure 20.

[0100] The fourth switching element K4 is used to control whether the fourteenth element Y14 is connected to the filter circuit structure 20 according to the fourth control signal CTRL4 output by the control unit 21; when the fourth control signal CTRL4 output by the control unit 21 is to open the fourth switching element K4, the fourth switching element K4 is open and the fourteenth element Y14 is not connected to the filter circuit structure 20; when the fourth control signal CTRL4 output by the control unit 21 is to close the fourth switching element K4, the fourth switching element K4 is closed and the fourteenth element Y14 is connected to the filter circuit structure 20.

[0101] The fifth switching element K5 is used to control whether the fifteenth element Y15 and the sixteenth element Y16 are connected to the filter circuit structure 20 according to the fifth control signal CTRL5 output by the control unit 21. When the fifth control signal CTRL5 output by the control unit 21 is to open the fifth switching element K5, the fifth switching element K5 is open, and the fifteenth element Y15 and the sixteenth element Y16 are not connected to the filter circuit structure 20. When the second control signal CTRL2 output by the control unit 21 is to close the second switching element K2, the second switching element K2 is closed, and the fifteenth element Y15 and the sixteenth element Y16 are connected to the filter circuit structure 20.

[0102] In one embodiment, such as Figure 14 As shown, the twelfth element Y12 includes the eleventh inductor L11, the thirteenth element Y13 includes the thirteenth capacitor C13, and the fourteenth element Y14 includes the fourteenth capacitor C14.

[0103] Specifically, the eleventh element Y11, the eleventh inductor L11, the eleventh capacitor C11 and the twelfth capacitor C12 are connected in sequence. The eleventh element Y11 is connected to the signal input terminal RF_IN, and the twelfth capacitor C12 is connected to the signal output terminal RF_OUT.

[0104] The first switching element K1 is connected in parallel with the eleventh element Y11, and the second switching element K2 is connected in parallel with the eleventh inductor L11;

[0105] The control unit 21 is connected to the first switching element K1 and outputs a first control signal CTRL1 to turn off the first switching element K1, so that the first switching element K1 is turned off and the eleventh element Y11 is not connected to the filter circuit structure 20.

[0106] The control unit 21 is connected to the second switching element K2 and outputs a second control signal CTRL2 to open the second switching element K2, so that the second switching element K2 is opened and the eleventh inductor L11 is connected to the filter circuit structure 20.

[0107] The control unit 21 is connected to the third switching element K3 and outputs the third control signal CTRL3 to turn off the third switching element K3, so that the third switching element K3 is turned off, and the thirteenth capacitor C13 is connected to the filter circuit structure 20.

[0108] The control unit 21 is connected to the fourth switching element K4 and outputs the fourth control signal CTRL4 to turn off the fourth switching element K4, so that the fourth switching element K4 is turned off, and the fourteenth capacitor C14 is connected to the filter circuit structure 20.

[0109] The control unit 21 is connected to the fifth switching element K5 and outputs the fifth control signal CTRL5 to open the fifth switching element K5, so that the fifth switching element K5 is opened and the fifteenth element Y15 and the sixteenth element Y16 are not connected to the filter circuit structure 20, thereby constructing the filter circuit structure 20 as a Π-type low-pass filter circuit structure.

[0110] For example, the capacitance values ​​of the thirteenth capacitor C13 and the fourteenth capacitor C14 are 0.2-0.5pF, and the inductance value of the eleventh inductor L11 is 0.8-2.2nH. The above-mentioned filter circuit structure 20 constitutes a Π-type 5G low-pass filter circuit structure.

[0111] For example, when the capacitance values ​​of the thirteenth capacitor C13 and the fourteenth capacitor C14 are 0.2pF, and the inductance value of the eleventh inductor L11 is 1.5nH, the above-mentioned Π-type 5G low-pass filter circuit structure is simulated using ADS software. The simulation results are as follows: Figure 3 As shown, the expected results can be obtained under ideal conditions, namely, the insertion loss in 5G band is less than 0.5dB and the suppression of the second and third harmonics is greater than 10dB.

[0112] For example, the capacitance values ​​of the thirteenth capacitor C13 and the fourteenth capacitor C14 are 1.0-1.8pF, and the inductance value of the eleventh inductor L11 is 2.0-3.9nH. The above-mentioned filter circuit structure 20 constitutes a Π-type 2.4G low-pass filter circuit structure.

[0113] For example, when the capacitance values ​​of the thirteenth capacitor C13 and the fourteenth capacitor C14 are 1.5pF, and the inductance value of the eleventh inductor L11 is 3.3nH, the above-mentioned Π-type 2.4G low-pass filter circuit structure is simulated using ADS software. The simulation results are as follows: Figure 4 As shown, the expected results can be obtained under ideal conditions, namely, the in-band insertion loss of 2.4G is less than 0.5dB, the suppression of the second and third harmonics is greater than 15dB, and the suppression of 5G is greater than 15dB. It is suitable for situations where 5G has general interference with 2.4G RX.

[0114] In this embodiment, by using discrete inductor and capacitor components in the twelfth, thirteenth, and fourteenth elements, the filter circuit structure is constructed as a Π-type low-pass filter circuit structure. This allows for flexible replacement and adjustment, eliminating the need to consider different types of filter packages from different manufacturers, thus saving on the cost of integrated filters. This solves the problem of existing filters requiring different matching filter circuit structures, which prevents the reuse of designed filter circuit structures, and also addresses the issues of coexistence and harmonics between the 2.4G and 5G frequency bands.

[0115] In one embodiment, such as Figure 15As shown, the fifteenth element Y15 includes the twelfth inductor L12, and the sixteenth element Y16 includes the fifteenth capacitor C15.

[0116] Specifically, the eleventh element Y11, the twelfth element Y12, the eleventh capacitor C11 and the twelfth capacitor C12 are connected in sequence. The eleventh element Y11 is connected to the signal input terminal RF_IN, and the twelfth capacitor C12 is connected to the signal output terminal RF_OUT.

[0117] The first switching element K1 is connected in parallel with the eleventh element Y11, and the second switching element K2 is connected in parallel with the twelfth element Y12;

[0118] The control unit 21 is connected to the first switching element K1 and outputs a first control signal CTRL1 to turn off the first switching element K1, so that the first switching element K1 is turned off and the eleventh element Y11 is not connected to the filter circuit structure 20.

[0119] The control unit 21 is connected to the second switching element K2 and outputs a second control signal CTRL2 to turn off the second switching element K2, so that the second switching element K2 is turned off and the twelfth element Y12 is not connected to the filter circuit structure 20.

[0120] The control unit 21 is connected to the third switching element K3 and outputs the third control signal CTRL3 to open the third switching element K3, so that the third switching element K3 is opened and the thirteenth element Y13 is not connected to the filter circuit structure 20.

[0121] The control unit 21 is connected to the fourth switching element K4 and outputs the fourth control signal CTRL4 to open the fourth switching element K4, so that the fourth switching element K4 is opened and the fourteenth element Y14 is not connected to the filter circuit structure 20.

[0122] The control unit 21 is connected to the fifth switching element K5 and outputs the fifth control signal CTRL5 to turn off the fifth switching element K5. The twelfth inductor L12 and the fifteenth capacitor C15 are connected to the filter circuit structure 20, thereby constructing the filter circuit structure 20 as an LC band-stop filter circuit structure.

[0123] For example, the inductance value of the twelfth inductor L12 is 1.5-2.4nH, and the capacitance value of the fifteenth capacitor C15 is 1.5-2.7pF. The above-mentioned filter circuit structure 20 constitutes an LC band-stop filter circuit structure.

[0124] For example, when the inductance of the twelfth inductor L12 is 2.0nH and the capacitance of the fifteenth capacitor C15 is 2.3pF, the above LC band-stop filter circuit structure is simulated using ADS software. The simulation results are as follows: Figure 6As shown, the expected effect can be obtained under ideal conditions, that is, the suppression of 2.4G is greater than 25dB, which is suitable for situations where 2.4G seriously interferes with 5G RX.

[0125] For example, the inductance value of the twelfth inductor L12 is 1.5-2.2nH, and the capacitance value of the fifteenth capacitor C15 is 0.5-0.8pF. The above-mentioned filter circuit structure 10 constitutes an LC band-stop filter circuit structure.

[0126] For example, when the inductance of the twelfth inductor L12 is 1.8nH and the capacitance of the fifteenth capacitor C15 is 0.6pF, the above LC band-stop filter circuit structure is simulated using ADS software. The simulation results are as follows: Figure 7 As shown, the expected effect can be achieved under ideal conditions, that is, the suppression of 2.4G is greater than 25dB. It is suitable for situations where 2.4G seriously interferes with 5G RX. In this case, the LC band-stop filter circuit structure can also be called a 2.4G double frequency limiting circuit and a circuit to prevent 5G interference with 2.4G RX.

[0127] In this embodiment, by using discrete inductor and capacitor components for the fifteenth and sixteenth elements, the filter circuit structure is constructed as an LC band-stop filter circuit structure. This allows for flexible replacement and debugging, eliminating the need to consider different types of filter packages from different manufacturers, thus saving on the cost of integrated filters. This solves the problem of existing filters requiring different matching filter circuit structures, which prevents the reuse of designed filter circuit structures, and also addresses the issues of coexistence and harmonics between the 2.4G and 5G frequency bands.

[0128] In one embodiment, such as Figure 16 As shown, the twelfth element Y12 includes the thirteenth inductor L13, the thirteenth element Y13 includes the fourteenth inductor L14, and the fourteenth element Y14 includes the fifteenth inductor L15.

[0129] Specifically, the eleventh element Y11, the thirteenth inductor L13, the eleventh capacitor C11 and the twelfth capacitor C12 are connected in sequence. The eleventh element Y11 is connected to the signal input terminal RF_IN, and the twelfth capacitor C12 is connected to the signal output terminal RF_OUT.

[0130] The first switching element K1 is connected in parallel with the eleventh element Y11, and the second switching element K2 is connected in parallel with the thirteenth inductor L13;

[0131] The control unit 21 is connected to the first switching element K1 and outputs a first control signal CTRL1 to turn off the first switching element K1, so that the first switching element K1 is turned off and the eleventh element Y11 is not connected to the filter circuit structure 20.

[0132] The control unit 21 is connected to the second switching element K2 and outputs a second control signal CTRL2 to open the second switching element K2, so that the second switching element K2 is opened, and the thirteenth inductor L13 is connected to the filter circuit structure 20.

[0133] The control unit 21 is connected to the third switching element K3 and outputs the third control signal CTRL3 to turn off the third switching element K3, so that the third switching element K3 is turned off, and the fourteenth inductor L14 is connected to the filter circuit structure 20.

[0134] The control unit 21 is connected to the fourth switching element K4 and outputs the fourth control signal CTRL4 to turn off the fourth switching element K4, so that the fourth switching element K4 is turned off, and the fifteenth inductor L15 is connected to the filter circuit structure 20.

[0135] The control unit 21 is connected to the fifth switching element K5 and outputs the fifth control signal CTRL5 to open the fifth switching element K5, so that the fifth switching element K5 is opened and the fifteenth element Y15 and the sixteenth element Y16 are not connected to the filter circuit structure 20, thereby making the filter circuit structure 20 a high-pass filter circuit structure.

[0136] For example, the inductance value of the thirteenth inductor L13 is 0.6-1.2nH, and the inductance values ​​of the fourteenth inductor L14 and the fifteenth inductor L15 are 2.4-5.6nH. The above-mentioned filter circuit structure 20 constitutes a 5G high-pass filter circuit structure.

[0137] For example, when the inductance value of the thirteenth inductor L13 is 0.6nH, and the inductance values ​​of the fourteenth inductor L14 and the fifteenth inductor L15 are 5.1nH, the above 5G high-pass filter circuit structure is simulated using ADS software. The simulation results are as follows: Figure 9 As shown, the expected effect can be achieved under ideal conditions, that is, it can suppress 2.4G to a certain extent and can be used in situations where 2.4G has a slight interference with 5G RX.

[0138] In this embodiment, by using discrete inductor and capacitor components in the twelfth, thirteenth, and fourteenth elements, the filter circuit structure is constructed as a high-pass filter circuit structure. This allows for flexible replacement and debugging, eliminating the need to consider different types of filter packages from different manufacturers, thus saving on the cost of integrated filters. This solves the problem of existing filters requiring different matching filter circuit structures, which prevents the reuse of designed filter circuit structures, and also addresses the issues of coexistence and harmonics between the 2.4G and 5G frequency bands.

[0139] In one embodiment, such as Figure 17 As shown, the twelfth element Y12 includes the sixteenth inductor L16, and the fourteenth element Y14 includes the sixteenth capacitor C16.

[0140] Specifically, the eleventh element Y11, the sixteenth inductor L16, the eleventh capacitor C11 and the twelfth capacitor C12 are connected in sequence. The eleventh element Y11 is connected to the signal input terminal RF_IN, and the twelfth capacitor C12 is connected to the signal output terminal RF_OUT.

[0141] The first switching element K1 is connected in parallel with the eleventh element Y11, and the second switching element K2 is connected in parallel with the sixteenth inductor L16;

[0142] The control unit 21 is connected to the first switching element K1 and outputs a first control signal CTRL1 to turn off the first switching element K1, so that the first switching element K1 is turned off and the eleventh element Y11 is not connected to the filter circuit structure 20.

[0143] The control unit 21 is connected to the second switching element K2 and outputs a second control signal CTRL2 to open the second switching element K2, so that the second switching element K2 is opened, and the sixteenth inductor L16 is connected to the filter circuit structure 20.

[0144] The control unit 21 is connected to the third switching element K3 and outputs the third control signal CTRL3 to open the third switching element K3, so that the third switching element K3 is opened and the thirteenth element Y13 is not connected to the filter circuit structure 20.

[0145] The control unit 21 is connected to the fourth switching element K4 and outputs the fourth control signal CTRL4 to turn off the fourth switching element K4, so that the fourth switching element K4 is turned off, and the sixteenth capacitor C16 is connected to the filter circuit structure 20.

[0146] The control unit 21 is connected to the fifth switching element K5 and outputs the fifth control signal CTRL5 to open the fifth switching element K5, so that the fifth switching element K5 is opened and the fifteenth element Y15 and the sixteenth element Y16 are not connected to the filter circuit structure 20, thereby making the filter circuit structure 20 an L-shaped low-pass filter circuit structure.

[0147] For example, the inductance value of the sixteenth inductor L16 is 1.8-3.9nH, and the capacitance value of the sixteenth capacitor C16 is 0.5-0.8pF. The above-mentioned filter circuit structure 20 constitutes an L-shaped low-pass filter circuit structure.

[0148] For example, when the inductance of the sixteenth inductor L16 is 1.8nH and the capacitance of the sixteenth capacitor C16 is 0.6pF, the above L-shaped low-pass filter circuit structure is simulated using ADS software. The simulation results are as follows: Figure 12 As shown, the expected results can be obtained under ideal conditions, namely, the insertion loss of 2.4G in the band is less than 1dB, the suppression of the second and third harmonics is greater than 5dB, and the suppression of 5G is greater than 5dB. It is suitable for situations where 5G has general interference with 2.4G RX.

[0149] like Figure 18 As shown, the eleventh element Y11 includes the seventeenth inductor L17, and the thirteenth element Y13 includes the seventeenth capacitor C17.

[0150] Specifically, the seventeenth inductor L17, the sixteenth inductor L16, the eleventh capacitor C11, and the twelfth capacitor C12 are connected in sequence. The seventeenth inductor L17 is connected to the signal input terminal RF_IN, and the twelfth capacitor C12 is connected to the signal output terminal RF_OUT.

[0151] The first switching element K1 is connected in parallel with the seventeenth inductor L17, and the second switching element K2 is connected in parallel with the twelfth element Y12;

[0152] The control unit 21 is connected to the first switching element K1 and outputs a first control signal CTRL1 to open the first switching element K1, so that the first switching element K1 is opened, and the seventeenth inductor L17 is connected to the filter circuit structure 20.

[0153] The control unit 21 is connected to the second switching element K2 and outputs a second control signal CTRL2 to turn off the second switching element K2, so that the second switching element K2 is turned off and the twelfth element Y12 is not connected to the filter circuit structure 20.

[0154] The control unit 21 is connected to the third switching element K3 and outputs the third control signal CTRL3 to turn off the third switching element K3, so that the third switching element K3 is turned off, and the seventeenth capacitor C17 is connected to the filter circuit structure 20.

[0155] The control unit 21 is connected to the fourth switching element K4 and outputs the fourth control signal CTRL4 to open the fourth switching element K4, so that the fourth switching element K4 is opened and the fourteenth element Y14 is not connected to the filter circuit structure 20.

[0156] The control unit 21 is connected to the fifth switching element K5 and outputs the fifth control signal CTRL5 to open the fifth switching element K5, so that the fifth switching element K5 is opened and the fifteenth element Y15 and the sixteenth element Y16 are not connected to the filter circuit structure 20, thereby making the filter circuit structure 20 an L-shaped low-pass filter circuit structure.

[0157] For example, the inductance value of the seventeenth inductor L17 is 1.8-3.9nH, and the capacitance value of the seventeenth capacitor C17 is 0.5-0.8pF. The above-mentioned filter circuit structure 10 constitutes an L-shaped low-pass filter circuit structure.

[0158] For example, when the inductance of the seventeenth inductor L17 is 1.8nH and the capacitance of the seventeenth capacitor C17 is 0.6pF, the above L-shaped low-pass filter circuit structure is simulated using ADS software. The simulation results are as follows: Figure 12 As shown, the expected results can be obtained under ideal conditions, namely, the insertion loss of 2.4G in the band is less than 1dB, the suppression of the second and third harmonics is greater than 5dB, and the suppression of 5G is greater than 5dB. It is suitable for situations where 5G has general interference with 2.4G RX.

[0159] Understandably, control unit 21 is a device or component with signal processing capabilities. For example, control unit 21 can be a general-purpose processor, a DSP (Digital Signal Processor), an FPGA (Field Programmable Gate Array), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.; general-purpose processors can be microprocessors, MCUs (Microcontroller Units), or any conventional processor, etc.

[0160] In this embodiment, discrete inductor and capacitor components are used in the eleventh, twelfth, thirteenth, and fourteenth elements to construct an L-shaped low-pass filter circuit structure. This allows for flexible replacement and adjustment without considering different filter packages from different manufacturers, saving on integrated filter costs. This solves the problem of existing filters requiring different matching filter circuit structures, which prevents the reuse of designed filter circuit structures, and also addresses the issues of coexistence and harmonics between the 2.4G and 5G frequency bands.

[0161] Based on the same concept, this utility model provides a wireless device, including the filter circuit structure 10 or the filter circuit structure 20 described in any of the above embodiments.

[0162] In this embodiment, the filter circuit structure 10 or filter circuit structure 20 is consistent with the filter circuit structure 10 or filter circuit structure 20 described in any of the above embodiments. The specific structure and function can be referred to the filter circuit structure 10 or filter circuit structure 20 described in any of the above embodiments, and will not be repeated here.

[0163] For example, wireless devices can be WiFi products.

[0164] In this embodiment, a wireless device is provided, including a filter circuit structure. This filter circuit structure comprises a first element, a second element, a third element, a fourth element, a fifth element, and a sixth element, or an eleventh element, a twelfth element, a thirteenth element, a fourteenth element, a fifteenth element, and a sixteenth element. By utilizing different combinations of these elements, multiple (e.g., six) filter circuit structures can be implemented, enabling the reuse of filter circuit structures. Different filters can reuse the filter circuit structure, avoiding design oversights and allowing for flexible replacement and debugging. It eliminates the need to consider different types of filter packages from different manufacturers, saving on integrated filter costs. This solves the problem that existing filters require different matching filter circuit structures, making it impossible to reuse the designed filter circuit structure.

[0165] It should be noted that the above wireless device embodiments and the above filter circuit structure embodiments belong to the same concept. For details of their implementation process, please refer to the filter circuit structure embodiments. Furthermore, the technical features in the filter circuit structure embodiments are all applicable to the above wireless device embodiments, and will not be repeated here.

[0166] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0167] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above, which are not provided in detail for the sake of brevity; although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A filter circuit structure, characterized in that, include: First element, second element, third element, fourth element, fifth element, sixth element, first capacitor, and second capacitor, wherein: The first element, the second element, the first capacitor, and the second capacitor are connected in sequence. The first element is connected to the signal input terminal, and the second capacitor is connected to the signal output terminal. One end of the third element is connected to the connection point between the first element and the second element, and the other end of the third element is grounded. One end of the fourth element is connected to the connection terminal between the second element and the first capacitor, and the other end of the fourth element is grounded; One end of the fifth element is connected to the connection terminal of the first capacitor and the second capacitor, and the other end of the fifth element is connected to one end of the sixth element, and the other end of the sixth element is grounded.

2. The filter circuit structure according to claim 1, characterized in that, The first element includes a wire, the second element includes a first inductor, the third element includes a third capacitor, the fourth element includes a fourth capacitor, and the fifth and sixth elements are disconnected and not connected to the filter circuit structure, so that the filter circuit structure is constructed as a Π-type low-pass filter circuit structure.

3. The filter circuit structure according to claim 1, characterized in that, The first and second components each include a wire, the fifth component includes a second inductor, the sixth component includes a fifth capacitor, and the third and fourth components are disconnected and not connected to the filter circuit structure, so that the filter circuit structure is constructed as an LC band-stop filter circuit structure.

4. The filter circuit structure according to claim 1, characterized in that, The first element includes a wire, the second element includes a third inductor, the third element includes a fourth inductor, the fourth element includes a fifth inductor, and the fifth and sixth elements are disconnected and not connected to the filter circuit structure, so that the filter circuit structure is constructed as a high-pass filter circuit structure.

5. The filter circuit structure according to claim 1, characterized in that, The first element includes a wire, the second element includes a sixth inductor, and the fourth element includes a sixth capacitor, so that the filter circuit structure is constructed as an L-shaped low-pass filter circuit structure; or, The first element includes a seventh inductor, the second element includes a wire, the third element includes a seventh capacitor, and the fourth, fifth, and sixth elements are disconnected and not connected to the filter circuit structure, so that the filter circuit structure is constructed as an L-shaped low-pass filter circuit structure.

6. A filter circuit structure, characterized in that, include: Control unit, eleventh element, twelfth element, thirteenth element, fourteenth element, fifteenth element, sixteenth element, first switching element, second switching element, third switching element, fourth switching element, fifth switching element, eleventh capacitor and twelfth capacitor, wherein: The eleventh element, the twelfth element, the eleventh capacitor, and the twelfth capacitor are connected in sequence. The eleventh element is connected to the signal input terminal, and the twelfth capacitor is connected to the signal output terminal. The first switching element is connected in parallel with the eleventh element, and the second switching element is connected in parallel with the twelfth element; One end of the third switching element is connected to the connection end of the eleventh and twelfth elements, and the other end of the third switching element is connected to one end of the thirteenth element, and the other end of the thirteenth element is grounded; One end of the fourth switching element is connected to the connection terminal of the twelfth element and the eleventh capacitor, and the other end of the fourth switching element is connected to one end of the fourteenth element, and the other end of the fourteenth element is grounded. One end of the fifth switching element is connected to the connection terminal of the eleventh capacitor and the twelfth capacitor, the other end of the fifth switching element is connected to one end of the fifteenth element, the other end of the fifteenth element is connected to one end of the sixteenth element, and the other end of the sixteenth element is grounded. The control unit is connected to the first switch element, the second switch element, the third switch element, the fourth switch element, and the fifth switch element respectively, and is used to output the first control signal, the second control signal, the third control signal, the fourth control signal, and the fifth control signal respectively to control the opening or closing of the first switch element, the second switch element, the third switch element, the fourth switch element, and the fifth switch element.

7. The filter circuit structure according to claim 6, characterized in that, The twelfth element includes an eleventh inductor, the thirteenth element includes a thirteenth capacitor, and the fourteenth element includes a fourteenth capacitor, so that the filter circuit structure is constructed as a Π-type low-pass filter circuit structure.

8. The filter circuit structure according to claim 6, characterized in that, The fifteenth element includes the twelfth inductor, and the sixteenth element includes the fifteenth capacitor, so that the filter circuit structure is constructed as an LC band-stop filter circuit structure.

9. The filter circuit structure according to claim 6, characterized in that, The twelfth element includes a thirteenth inductor, the thirteenth element includes a fourteenth inductor, and the fourteenth element includes a fifteenth inductor, so that the filter circuit structure is constructed as a high-pass filter circuit structure.

10. The filter circuit structure according to claim 6, characterized in that, The twelfth element includes a sixteenth inductor, and the fourteenth element includes a sixteenth capacitor, so that the filter circuit structure is constructed as an L-shaped low-pass filter circuit structure; or, The eleventh element includes a seventeenth inductor, and the thirteenth element includes a seventeenth capacitor, so that the filter circuit structure is constructed as an L-shaped low-pass filter circuit structure.

11. A wireless device, characterized in that, It includes the filter circuit structure according to any one of claims 1 to 5, or the filter circuit structure according to any one of claims 6 to 10.

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