Electronic circuit, electronic circuit system including same, and receiving circuit system

Abstract

An electronic circuit, an electronic circuit system including the same, and a receiving circuit system are provided. The electronic circuit includes: a first inductor connected to an input terminal; a second inductor and a third inductor connected in series with each other and connected in parallel with the first inductor; a first switch connected between the second inductor and the third inductor; and a processor electrically connected to the first switch. The processor may be configured to, in response to a first request, close the first switch such that a first signal in a first frequency band is output through an output side of the electronic circuit; and in response to a second request different from the first request, the first switch is turned off such that a second signal in a second frequency band lower than the first frequency band is output through the output side.

Description

[0001] This application claims the priority of Korean Patent Application No. 10-2023-0115738 filed on August 31, 2023, and Korean Patent Application No. 10-2023-0134618 filed on October 10, 2023, in the Korean Intellectual Property Office, the disclosures of which are incorporated herein by reference in their entirety. Technical Field

[0002] Example embodiments relate to electronic circuits for transmitting and / or receiving signals in different frequency bands. Background Art

[0003] Recently developed electronic devices support various wireless communication technologies to provide users with various services. Since wireless communication technologies use different frequency bands according to types, electronic devices include radio frequency integrated circuits (RFICs) to support the various wireless communication technologies.

[0004] With the recent evolution of wireless communications from third generation (3G) and long term evolution (LTE) to 5G, frequency bands required for RFICs have increased.

[0005] In addition, Wi-Fi communication technology is evolving to allow electronic devices to connect to a wireless local area network (WLAN). For example, with the development of standards related to Wi-Fi communication technology, electronic devices support Wi-Fi 6E and Wi-Fi 7. As a result, in addition to the 2.4 GHz band and the 5 GHz band, the RFIC included in the electronic device also supports Wi-Fi communication in the 6 GHz band.

[0006] Thus, an RFIC may include multiple transceivers (sometimes referred to as RF chains) corresponding to each frequency band to support communications using signals in different frequency bands.

[0007] This may lead to an increase in the size of the RFIC chip. In addition, due to the devices included in each transceiver of the RFIC, circuit loss may occur, which may reduce the operating efficiency of the RFIC. Summary of the invention

[0008] Example embodiments provide an electronic circuit that controls a switch connected to an inductor to transmit or receive signals in different frequency bands.

[0009] According to an example embodiment, an electronic circuit includes: a first inductor connected to an input terminal; a second inductor and a third inductor connected in series and connected in parallel with the first inductor; a first switch connected between the second inductor and the third inductor; and a processor electrically connected to the first switch. The processor may be configured to: in response to a first request, close the first switch so that a first signal in a first frequency band is output through an output side of the electronic circuit; and in response to a second request different from the first request, open the first switch so that a second signal in a second frequency band lower than the first frequency band is output through the output side.

[0010] According to an example embodiment, a transmission circuit system including an electronic circuit includes: a transmission mixer configured to up-convert a baseband signal; a first transmission circuit configured to receive a signal up-converted from the baseband signal by the transmission mixer; an amplifier configured to amplify a signal output from the first transmission circuit and output the amplified signal; a second transmission circuit having an output side and receiving the amplified signal from the amplifier; and a processor electrically connected to the first transmission circuit and the second transmission circuit. The first transmission circuit may include: a first inductor; a second inductor and a third inductor connected in parallel with the first inductor and connected in series; and a first switch connected between the second inductor and the third inductor. The processor may control the first switch so that signals in different frequency bands are output through an output terminal.

[0011] According to an example embodiment, a receiving circuit system includes: a first receiving circuit configured to receive a radio frequency (RF) signal at a receiving terminal; a low noise amplifier configured to amplify a signal output from the first receiving circuit; a second receiving circuit configured to receive a signal amplified by the low noise amplifier; a receiving mixer configured to down-convert the signal output from the second receiving circuit to a baseband signal; and a processor connected to the first receiving circuit and the second receiving circuit. The first receiving circuit includes: a first receiving inductor; a second receiving inductor and a third receiving inductor connected in parallel with the first receiving inductor; and a first receiving switch connected between the second receiving inductor and the third receiving inductor, wherein when the receiving switch is closed, the second receiving inductor and the third receiving inductor are connected in series. The processor controls the first receiving switch to change the inductance of the first receiving circuit so that signals in different frequency bands received through the receiving terminal are output through the first receiving circuit.

[0012] According to an example embodiment, an electronic circuit includes: a first inductor connected to an input side of the electronic circuit; a second inductor; a switch connected in series with the second inductor, wherein the switch and the second inductor are connected in parallel with the first inductor together; and a processor electrically connected to the switch and configured to: close the switch when a first signal in a first frequency band is input to the electronic circuit so that the first signal can be sent through an output side of the electronic circuit; and open the switch when a second signal in a second frequency band lower than the first frequency band is input at the input side so that the second signal can be sent through the output side. The first inductor and the second inductor have an inductance sufficient to improve impedance matching in the first frequency band and / or the second frequency band between an external circuit device connected to the input side and an external circuit device connected to the output side. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The above and other aspects, features and advantages of the present disclosure will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings.

[0014] Figure 1 is a block diagram of an electronic circuit system according to an example embodiment.

[0015] Figure 2A It is shown that the Figure 1 A circuit diagram of an example of an electronic circuit in a transmitting circuit system.

[0016] Figure 2B It shows that Figure 2A The electronic circuit further includes a circuit diagram of a configuration of a variable capacitor connected in parallel with the first inductor.

[0017] Figure 2C It shows that Figure 2B The electronic circuit further includes a circuit diagram of a configuration of an inductor connected in parallel with the first inductor.

[0018] Figure 3 It is shown that the Figure 1 A circuit diagram of another example of an electronic circuit in an electronic circuit system.

[0019] Figure 4 is a circuit diagram of an electronic circuit system including a first transmit circuit and a second transmit circuit according to an example embodiment.

[0020] Figure 5 is a block diagram of receive circuitry according to an example embodiment.

[0021] Figure 6 It is shown Figure 5 A circuit diagram of an example of a first receiving circuit in a receiving circuit system.

[0022] Figure 7 It is shown Figure 5 A circuit diagram of an example of a second receiving circuit in a receiving circuit system.

[0023] Figure 8 is a block diagram of a transceiver system according to an example embodiment.

[0024] Fig. 9 is a block diagram of an IoT device including an electronic circuit system according to an example embodiment.

[0025] Fig.10 is a block diagram of a mobile terminal to which an electronic circuit system according to example embodiments is applied. DETAILED DESCRIPTION

[0026] Hereinafter, example embodiments will be described with reference to the accompanying drawings.

[0027] Figure 1 is a block diagram of an electronic circuit system 100 according to an example embodiment. The electronic circuit system 100 may include an electronic circuit 120 configured to transmit signals in different frequency bands, a transmit mixer 140, an amplifier 150, and a processor 110.

[0028] The electronic circuit system 100 may include a transmission mixer 140 that up-converts a baseband signal. For example, the transmission mixer 140 may up-convert the baseband signal into a radio frequency (RF) signal having a specific frequency based on a signal received from a local oscillator.

[0029] Furthermore, the electronic circuit system 100 may include an electronic circuit 120 connected to a transmit mixer 140 .

[0030] The electronic circuit 120 may receive a signal output from the transmission mixer 140. For example, the electronic circuit 120 may receive a signal up-converted by the transmission mixer 140 from a baseband signal.

[0031] The electronic circuit 120 may function as an impedance matching circuit for impedance matching between a circuit device (e.g., the transmission mixer 140) connected to the input side of the electronic circuit 120 and a circuit device (e.g., the amplifier 150) connected to the output side of the electronic circuit 120. Compared to a system in which the electronic circuit 120 does not exist between the transmission mixer 140 and the amplifier 150, impedance matching may be improved in at least one of frequency bands in which the output signal SOUT is transmitted.

[0032] For example, the signal output from the transmission mixer 140 may be converted into a signal in a predetermined frequency band by the electronic circuit 120. In addition, the signal output from the transmission mixer 140 may be converted by the transmission mixer 140. In addition, the electronic circuit 120 may transmit the signal in the predetermined frequency band to the amplifier 150. In addition, the amplifier 150 may amplify the signal in the predetermined frequency band output through the output side of the electronic circuit 120.

[0033] The electronic circuit system 100 may include a processor 110 electrically connected to an electronic circuit 120 .

[0034] The processor 110 may execute software (or a program) to control at least one other component (eg, the electronic circuit 120 ) of the electronic circuit system 100 , and may handle various data processing or calculations.

[0035] The processor 110 may include a central processing unit, a microprocessor, etc., and may control the overall operation of the electronic circuit system 100. Therefore, the following operations performed by the electronic circuit system 100 may be understood to be performed under the control of the processor 110.

[0036] According to example embodiments, the processor 110 may execute an algorithm for controlling the electronic circuit 120. For example, the algorithm may be a software code programmed inside the processor 110. For example, the algorithm may be a hard code hard-coded inside the processor 110, but example embodiments are not limited thereto.

[0037] The processor 110 may control a switch included in the electronic circuit 120 based on an algorithm. For example, the processor 110 may close or open a switch included in the electronic circuit 120.

[0038] The processor 110 may control switches included in the electronic circuit 120 so that the electronic circuit system 100 transmits output signals SOUT in different frequency bands at the output terminal OT (eg, non-simultaneously).

[0039] For example, the processor 110 may close a switch included in the electronic circuit 120 so that the electronic circuit system 100 transmits the signal SOUT in the first frequency band at the output terminal OT.

[0040] Furthermore, the processor 110 may turn off a switch included in the electronic circuit 120 so that the electronic circuit system 100 transmits the signal SOUT in the second frequency band at the output terminal OT.

[0041] Thus, the electronic circuit system 100 can transmit signals in different frequency bands through a single transmit structure including the transmit mixer 140, the electronic circuit 120, and the amplifier 150. As described below, similar circuit arrangements can be provided according to the present inventive concept for receive operations within a transceiver.

[0042] As a result, the electronic circuit system 100 according to example embodiments may have a significantly reduced area.

[0043] Reference Figure 2A , the electronic circuit 120A according to example embodiments may include a plurality of inductors L1 , L2 , and L3 . Figure 2A The electronic circuit 120A shown in Figure 1 An example of an electronic circuit 120 .

[0044] The electronic circuit 120A may include a first inductor L1 connected to input terminals IT1 and IT2 (input side of the electronic circuit 120A). The output side of the electronic circuit 120A includes output terminals OT1 and OT2. The first inductor L1 may be connected to the transmission mixer 140 through the first input terminal IT1 and the second input terminal IT2.

[0045] The electronic circuit 120A may include a second inductor L2 and a third inductor L3 connected in parallel with the first inductor L1. The second inductor L2 and the third inductor L3 may be connected in series with each other (making a series electrical connection therebetween when a first switch S1 described below is closed).

[0046] Furthermore, the electronic circuit 120A may include a first switch S1 connected between the second inductor L2 and the third inductor L3 .

[0047] According to example embodiments, the processor 110 may control the first switch S1 included in the electronic circuit 120A so that a signal in a specific frequency band is output through an output side of the electronic circuit 120A and transmitted at the output terminal OT of the electronic circuit system 100 .

[0048] For example, the processor 110 may close the first switch S1 in response to a first request to transmit a first signal in a first frequency band (e.g., approximately 6 GHz). (Herein, a "request" for action to be taken by the processor 110 is not necessarily a request from an external circuit or an external source. For example, a "request" for transmitting a first signal to be responded to by the processor 110 may be any determination made by the processor 110 that a first signal in the first frequency band is output by the transmit mixer 140.) The electronic circuit 120A may output the first signal in the first frequency band through its output side when the first switch S1 is closed.

[0049] In addition, the processor 110 may open the first switch S1 in response to a second request for transmitting a second signal in a second frequency band (eg, about 5 GHz) lower than the first frequency band. The electronic circuit 120A may output the second signal in the second frequency band through its output side when the first switch S1 is opened.

[0050] Referring to the above-described components, the processor 110 according to example embodiments may control the first switch S1 included in the electronic circuit 120A to transmit signals having different frequency bands at the output terminal OT.

[0051] Therefore, the electronic circuit system 100 can transmit signals in different frequency bands through a single transmit structure (or TX chain) including the transmit mixer 140 , the electronic circuit 120A, and the amplifier 150 .

[0052] As a result, the electronic circuit system 100 may have a significantly reduced area.

[0053] Figure 2B It shows that Figure 2A The electronic circuit further comprises a circuit diagram of a configuration of a variable capacitor connected in parallel with the first inductor, and Figure 2C It shows that Figure 2B The electronic circuit further includes a circuit diagram of a configuration of other inductors connected in parallel with the first inductor, the second inductor, and the third inductor.

[0054] Reference Figure 2B , the electronic circuit 120B may also include a variable capacitor C1 connected to the plurality of inductors L1, L2, and L3. It is noted here that the inductors L1 to L3 and other inductors described herein may be discrete component inductors (sometimes referred to as lumped components), which may be smaller in size than a distributed inductor formed by an open-circuited stub or a short-circuited stub.

[0055] For example, the electronic circuit 120B may include a variable capacitor C1 connected in parallel with the first inductor L1 , the second inductor L2 , and / or the third inductor L3 .

[0056] For example, the electronic circuit 120B may include a variable capacitor C1 connected in parallel with the first inductor L1 and controlled to have a first capacitance when the first switch S1 is turned off.

[0057] Furthermore, the electronic circuit 120B may include a variable capacitor C1 connected in parallel with the first inductor L1 and connected in parallel with the second inductor L2 and the third inductor L3 , which is controlled to have a second capacitance when the first switch S1 is closed.

[0058] According to example embodiments, the processor 110 may control the capacitance of the variable capacitor C1 included in the electronic circuit 120B so that a signal in a specific frequency band is transmitted at the output terminal OT.

[0059] For example, the processor 110 may control the capacitance of the variable capacitor C1 so that the variable capacitor C1 resonates with at least one of the inductors connected to the variable capacitor C1.

[0060] For example, the processor 110 may control the capacitance of the variable capacitor C1 to be set to a first capacitance so that the variable capacitor C1 resonates with the first inductor L1 , the second inductor L2 , and the third inductor L3 when the first switch is closed.

[0061] In addition, the processor 110 may control the capacitance of the variable capacitor C1 to be set to a second capacitance lower than the first capacitance, so that the variable capacitor C1 resonates with the first inductor L1 when the first switch S1 is turned off.

[0062] Referring to the above components, the processor 110 according to example embodiments may control the capacitance of the variable capacitor C1 based on the inductance value of the electronic circuit 120B controlled by the first switch S1.

[0063] Therefore, the processor 110 can significantly reduce the number and / or size of capacitors required in the electronic circuit 120B to transmit signals in different frequency bands. In addition, the processor 110 can significantly reduce losses caused by capacitors included in the electronic circuit 120B.

[0064] As a result, the electronic circuit system 100 according to example embodiments may improve power efficiency of operations for transmitting signals in different frequency bands. In addition, the electronic circuit system 100 according to example embodiments may improve gain of the electronic circuit 120B.

[0065] Reference Figure 2C , the electronic circuit 120C according to example embodiments may include a plurality of inductors L2, L3, L4, and L5 connected in parallel with the first inductor L1, and a plurality of switches S1 and S2 connected between the inductors.

[0066] Figure 2C The electronic circuit 120C shown in FIG. 1 can be understood as Figure 1 An example of an electronic circuit 120 .

[0067] also, Figure 2C The electronic circuit 120C shown in FIG. 1 can be understood as Figure 2B The configuration of the electronic circuit 120B further includes a plurality of inductors L4 and L5 connected in parallel with the first inductor L1, the second inductor L2, and the third inductor L3, and a second switch S2 connected between the corresponding inductors L4 and L5.

[0068] Therefore, the same reference numerals are used to denote the same or substantially the same components, and redundant descriptions will be omitted.

[0069] The electronic circuit 120C according to example embodiments may include a fourth inductor L4 and a fifth inductor L5 connected in parallel with the first inductor L1. The fourth inductor L4 and the fifth inductor L5 may be connected in series.

[0070] The electronic circuit 120C may further include a second switch S2 connected between the fourth inductor L4 and the fifth inductor L5 .

[0071] According to example embodiments, the processor 110 may control at least one of the switch S1 and the switch S2 included in the electronic circuit 120C so that an output signal in a specific frequency band is transmitted through the output terminal OT.

[0072] For example, the processor 110 may close or open at least one of the first switch S1 and the second switch S2 so that a signal in a specific frequency band is transmitted at the output terminal OT.

[0073] For example, the processor 110 may close a first switch S1 included in the electronic circuit 120C and open a second switch S2 included in the electronic circuit 120C in response to a first request for transmitting a first signal having a first frequency band.

[0074] When the first switch S1 is closed and the second switch S2 is open, the processor 110 may transmit a first signal having a first frequency band at the output terminal OT.

[0075] In addition, the processor 110 may close the first switch S1 and the second switch S2 in response to a third request for transmitting a third signal having a third frequency band higher than the first frequency band.

[0076] When the first switch S1 and the second switch S2 are closed, the processor 110 may transmit a third signal having a third frequency band at the output terminal OT.

[0077] In addition, the processor 110 may open the first switch S1 and close the second switch S2 in response to a fourth request for transmitting a fourth signal having a fourth frequency band higher than the first frequency band and lower than the third frequency band. When the first switch S1 is opened and the second switch S2 is closed, the processor 110 may transmit the fourth signal having the fourth frequency band at the output terminal OT.

[0078] For example, the sum of the inductance of the second inductor L2 and the inductance of the third inductor L3 may be said to be smaller than the sum of the inductance of the fourth inductor L4 and the inductance of the fifth inductor L5 .

[0079] In addition, the processor 110 may open the first switch S1 and the second switch S2 in response to a second request for transmitting a second signal in a second frequency band lower than the first frequency band. When the first switch S1 and the second switch S2 are opened, the processor 110 may transmit a second signal in the second frequency band at the output terminal OT.

[0080] However, the number and configuration of the inductors connected in parallel with the first inductor L1 are not limited to the above example.

[0081] Referring to the above components, the processor 110 according to example embodiments may control a plurality of switches (eg, the first switch S1 and the second switch S2 ) included in the electronic circuit 120C to transmit a plurality of signals having different frequency bands at the output terminal OT.

[0082] Therefore, the electronic circuit system 100 can transmit signals in different frequency bands through a single transmit structure (or TX chain) including the transmit mixer 140 , the electronic circuit 120C, and the amplifier 150 .

[0083] As a result, the electronic circuit system 100 may have a significantly reduced area.

[0084] Figure 3 It is shown that the Figure 1 A circuit diagram of another example of an electronic circuit in an electronic circuit system.

[0085] Reference Figure 3 , the electronic circuit 120D according to example embodiments may include inductors L1 and L21 connected to each other, and a plurality of inductors L2 , L3 , L22 , and L23 connected in parallel to each of the inductors L1 and L21 .

[0086] Figure 3 The electronic circuit 120D shown in FIG. 1 can be understood as Figure 1 An example of an electronic circuit 120 .

[0087] also, Figure 3 The electronic circuit 120D shown in FIG. 1 can be understood as Figure 2A The configuration of the electronic circuit 120B further includes a first output side inductor L21, a second output side inductor L22, a third output side inductor L23 and an output side switch S21.

[0088] Therefore, the same reference numerals are used to denote the same or substantially the same components, and redundant descriptions will be omitted.

[0089] According to example embodiments, the electronic circuit 120D may include a first output-side inductor L21 electromagnetically coupled to the first inductor L1.

[0090] In addition, the electronic circuit 120D may include a second output side inductor L22 and a third output side inductor L23 connected in parallel with the first output side inductor L21. The second output side inductor L22 and the third output side inductor L23 may be connected in series to each other.

[0091] Furthermore, the electronic circuit 120D may include an output-side switch S21 connected between the second output-side inductor L22 and the third output-side inductor L23 .

[0092] The electronic circuit 120D may function as an impedance matching circuit for impedance matching of a signal transmitted through the output terminal OT. For example, a signal output through the transmission mixer 140 may be converted into a signal having a specific transmission power through the electronic circuit 120D.

[0093] According to example embodiments, the processor 110 may control the first switch S1 and / or the output-side switch S21 included in the electronic circuit 120D so that the output signal SOUT is transmitted at a specific transmission power.

[0094] For example, the processor 110 may close the first switch S1 in response to a request to increase the transmission power of the output signal SOUT.

[0095] In addition, the processor 110 may turn off the first switch S1 in response to a request to reduce the transmission power of the output signal SOUT.

[0096] For example, the processor 110 may close the first switch S1 in response to a request to transmit a signal at the first transmit power.

[0097] In addition, the processor 110 may turn off the first switch S1 in response to a request to transmit a signal at a second transmission power lower than the first transmission power.

[0098] For example, the processor 110 may close the first switch S1 to increase the transmission power of the output signal SOUT. In addition, the processor 110 may open the first switch S1 to reduce the transmission power of the output signal SOUT.

[0099] For example, the processor 110 may turn off the output-side switch S21 in response to a request to increase the transmission power of the output signal SOUT.

[0100] In addition, the processor 110 may close the output-side switch S21 in response to a request to reduce the transmission power of the output signal SOUT.

[0101] For example, the processor 110 may open the output side switch S21 to increase the transmission power of the signal transmitted at the output terminal OT. In addition, the processor 110 may close the output side switch S21 to reduce the transmission power of the output signal SOUT.

[0102] For example, the processor 110 may close the first switch S1 and open the output-side switch S21 in response to a request to increase the transmission power of a signal transmitted through the output terminal OT.

[0103] In addition, the processor 110 may open the first switch S1 and close the output-side switch S21 in response to a request to reduce the transmission power of the output signal SOUT.

[0104] Referring to the above components, the processor 110 according to an embodiment may control the first switch S1 and / or the output-side switch S21 included in the electronic circuit 120D to control the transmission power of the output signal SOUT.

[0105] Therefore, the electronic circuit system 100 can transmit signals with different transmit powers through a single transmit structure (or TX chain) including the transmit mixer 140 , the electronic circuit 120D, and the amplifier 150 .

[0106] As a result, the electronic circuit system 100 according to example embodiments may have a significantly reduced area.

[0107] In addition, the electronic circuit 120D may further include an output-side variable capacitor C2 connected to the first output-side inductor L21 , the second output-side inductor L22 , and the third output-side inductor L23 .

[0108] In this case, the processor 110 may control the capacitance of the output side variable capacitor C2 so that the output side variable capacitor C2 resonates with at least one of the output side inductors L21, L22, and L23 connected to the output side variable capacitor C2.

[0109] For example, when the output-side switch S21 is turned off, the processor 110 may control the capacitance of the output-side variable capacitor C2 so that the output-side variable capacitor C2 resonates with the first output-side inductor L21.

[0110] In addition, when the output side switch S21 is closed, the processor 110 can control the capacitance of the output side variable capacitor C2 so that the output side variable capacitor C2 resonates with the first output side inductor L21, the second output side inductor L22 and the third output side inductor L23.

[0111] Referring to the above configuration, the processor 110 according to example embodiments may control the capacitance of the output-side variable capacitor C2 based on the inductance determined by controlling at least one switch to transmit a signal having a specific frequency.

[0112] Therefore, the processor 110 can significantly reduce the number and / or size of capacitors required in the electronic circuit 120D to transmit signals in different frequency bands. In addition, the processor 110 can significantly reduce losses caused by capacitors included in the electronic circuit 120D.

[0113] As a result, the electronic circuit system 100 according to example embodiments may improve power efficiency in an operation for transmitting signals in different frequency bands.

[0114] Figure 4 is a circuit diagram illustrating an electronic circuit system including a first transmitting circuit and a second transmitting circuit according to an example embodiment.

[0115] Reference Figure 4 , the electronic circuit system 100A according to example embodiments may include a transmission mixer 140 , a first transmission circuit 121 , an amplifier 150 , and a second transmission circuit 122 .

[0116] Figure 4 The electronic circuit system 100A shown in FIG. 1 can be understood as Figure 1 Therefore, the same reference numerals are used to denote the same or substantially the same components as described above, and redundant descriptions will be omitted.

[0117] The electronic circuit system 100A may include a first transmit circuit 121 connected to a transmit mixer 140 .

[0118] The first transmitting circuit 121 can be Figure 2A The electronic circuit 120A shown in Figure 2B The electronic circuit 120B shown in Figure 2C The electronic circuit 120C shown in FIG. 1 has substantially the same configuration.

[0119] For example, the first transmission circuit 121 may include a first inductor L1 connected to the transmission mixer 140, and second and third inductors L2 and L3 connected in parallel to the first inductor L1. In addition, the first transmission circuit 121 may include a first switch S1 connected between the second and third inductors L2 and L3.

[0120] According to example embodiments, the first transmission circuit 121 may be referred to as an impedance matching circuit for impedance matching of a signal transmitted from the transmission mixer 140. For example, the first transmission circuit 121 may be referred to as an inter-stage matching circuit, but example embodiments are not limited thereto.

[0121] According to example embodiments, a signal output from the transmission mixer 140 may be converted into a signal in a predetermined frequency band by the first transmission circuit 121 .

[0122] According to example embodiments, the processor 110 may control a switch (eg, the first switch S1 ) included in the first transmitting circuit 121 to transmit a plurality of output signals SOUT in different respective frequency bands.

[0123] Therefore, the electronic circuit system 100A can transmit signals in different frequency bands through a single transmit structure (or transmit (TX) chain) including the transmit mixer 140, the first transmit circuit 121, the amplifier 150, and the second transmit circuit 122. As a result, the electronic circuit system 100 can have a significantly reduced area.

[0124] Furthermore, the electronic circuit system 100A may include a second transmission circuit 122 connected to the first transmission circuit 121 through an amplifier 150 .

[0125] The second transmitting circuit 122 can be Figure 3 The electronic circuit 120D shown in FIG. 1 has substantially the same configuration. Therefore, redundant description will be omitted.

[0126] For example, refer to Figure 3 and Figure 4 , the second transmitting circuit 122 may include a first inductor L1 and a first output-side inductor L21 coupled to each other.

[0127] Furthermore, the second transmission circuit 122 may include a second inductor L2 and a third inductor L3 connected in parallel with the first inductor L1. Furthermore, the second transmission circuit 122 may include a second output side inductor L22 and a third output side inductor L23 connected in parallel with the first output side inductor L21.

[0128] In addition, the second transmitting circuit 122 may include a first switch S1 connected between the second inductor L2 and the third inductor L3 , and an output-side switch S21 connected between the second inductor L2 and the third output-side inductor L23 .

[0129] According to example embodiments, the second transmitting circuit 122 may transmit the output signal SOUT in a specific frequency band.

[0130] The second transmission circuit 122 may be used as an impedance matching circuit for impedance matching between a circuit device (e.g., the amplifier 150) connected to the input side of the second transmission circuit 122 and a circuit device (e.g., a transmission line including an output terminal OT as a signal conductor and a ground conductor) connected to the output side of the second transmission circuit 122. For example, the second transmission circuit 122 may be referred to as an output matching circuit connected to the output terminal OT, but example embodiments are not limited thereto.

[0131] According to example embodiments, a signal output through the amplifier 150 may be converted into a signal having a specific transmission power through the second transmission circuit 122 .

[0132] The processor 110 may control one or more of a plurality of switches (eg, the first switch S1 and the output-side switch S21 ) included in the second transmitting circuit 122 to control the transmission power of the output signal SOUT.

[0133] Therefore, the electronic circuit system 100A may transmit signals having different frequency bands and different transmit powers through a single transmit structure (or transmit (TX) chain) including the transmit mixer 140 , the first transmit circuit 121 , the amplifier 150 , and the second transmit circuit 122 .

[0134] As a result, the electronic circuit system 100A may have a significantly reduced area.

[0135] According to example embodiments, the first transmission circuit 121 may have or include substantially the same configuration as the second transmission circuit 122 .

[0136] For example, the first transmitting circuit 121 may have or include Figure 3 The electronic circuit 120D shown in FIG. 1 is basically the same configuration.

[0137] For example, the first transmission circuit 121 may include two inductors coupled to each other. In addition, the first transmission circuit 121 may include a plurality of inductors connected in parallel to each of the two inductors coupled to each other, and a switch connected between the plurality of inductors.

[0138] Furthermore, according to example embodiments, the second transmission circuit 122 may have substantially the same configuration as the first transmission circuit 121 .

[0139] For example, the second transmitting circuit 122 may be connected to Figure 2A The electronic circuit 120A shown in FIG. 1 has substantially the same configuration.

[0140] For example, the second transmission circuit 122 may include an inductor connected to the amplifier 150. Furthermore, the second transmission circuit 122 may include a plurality of inductors connected in parallel with the inductor connected to the amplifier 150. Furthermore, the second transmission circuit 122 may include a switch connected between the plurality of inductors.

[0141] Referring to the above-described components, the processor 110 according to an embodiment may control at least a portion of the first transmission circuit 121 and the second transmission circuit 122 to transmit the output signal SOUT in different frequency bands.

[0142] In addition, the processor 110 may control at least a portion of the first transmitting circuit 121 and the second transmitting circuit 122 to transmit a plurality of output signals SOUT having different transmission powers.

[0143] Therefore, the electronic circuit system 100A may transmit signals having different frequency bands or different transmit powers through a single transmit structure (or transmit (TX) chain) including the transmit mixer 140 , the first transmit circuit 121 , the amplifier 150 , and the second transmit circuit 122 .

[0144] As a result, the electronic circuit system 100A according to example embodiments may have a significantly reduced area.

[0145] Figure 5 is a block diagram of receive circuitry according to an example embodiment. Figure 6 It is shown Figure 5 A circuit diagram of an example of a first receiving circuit in a receiving circuit system, and Figure 7 It is shown Figure 5 A circuit diagram of an example of a second receiving circuit in a receiving circuit system.

[0146] Refer to Figures 5 to 7 According to the embodiment, the receiving circuit system 500 may include a first receiving circuit 521 and a second receiving circuit 522 to receive signals in different frequency bands. The second receiving circuit 522 may receive an input signal at an input terminal 701 and output an output signal at an output side including output terminals 702 and 703.

[0147] Reference Figure 5 , the reception circuit system 500 according to example embodiments may include a first reception circuit 521 , a low noise amplifier (LNA) 551 , a second reception circuit 522 , and a processor 110 .

[0148] The reception circuit system 500 may include a first reception circuit 521 that receives an RF signal at a reception terminal RT. For example, the first reception circuit 521 may receive the RF signal through an antenna or a radio frequency front end (RFFE) connected to the reception terminal RT, but example embodiments are not limited thereto.

[0149] The first receiving circuit 521 can be used for impedance matching of the signal received at the receiving terminal RT (here, as previously described in conjunction with Figure 1 As noted in the discussion of impedance matching, “impedance matching of a signal” refers to impedance matching between circuit devices at relevant locations). For example, the first receiving circuit 521 may be referred to as an input matching circuit, but example embodiments are not limited thereto.

[0150] The signal received at the receiving terminal RT may be a signal in a predetermined frequency band, and is output at the output terminal 602. In addition, the first receiving circuit 521 may transmit the signal in the predetermined frequency band to the low noise amplifier 551. In addition, the low noise amplifier 551 may amplify the signal in the predetermined frequency band output from the first receiving circuit 521, and the second receiving circuit 522 may receive the signal in the predetermined frequency band amplified by the low noise amplifier 551.

[0151] Refer to Figure 5 and Figure 6 , the first receiving circuit 521 according to the embodiment may include a plurality of receiving inductors RL1 , RL2 , and RL3 . Figure 6 The first receiving circuit 521 can be understood as Figure 5 An example of the first receiving circuit 521.

[0152] For example, the first receiving circuit 521 may include a first receiving inductor RL1 connected to the receiving terminal RT. For example, the first receiving inductor RL1 may be connected to the receiving terminal RT implemented as a single terminal (which may be a signal conductor of a transmission line).

[0153] The first receiving circuit 521 may include a second receiving inductor RL2 and a third receiving inductor RL3 connected in parallel with the first receiving inductor RL1. The second receiving inductor RL2 and the third receiving inductor RL3 may be connected in series.

[0154] In addition, the first receiving circuit 521 may include a first receiving switch RS1 connected between the second receiving inductor RL2 and the third receiving inductor RL3 .

[0155] According to example embodiments, the processor 110 may control the first reception switch RS1 so that a signal in a specific frequency band is output through the first reception circuit 521 .

[0156] For example, the processor 110 may close the first reception switch RS1 included in the first reception circuit 521 in response to receiving a first signal in a first frequency band (eg, approximately 6 GHz) through the reception terminal RT.

[0157] The processor 110 may receive a first signal having a first frequency band and output a signal in a specific frequency band when the first receiving switch RS1 is closed.

[0158] Furthermore, the processor 110 may turn off the first reception switch RS1 in response to receiving a second signal in a second frequency band (eg, about 5 GHz) lower than the first frequency band through the reception terminal RT.

[0159] The processor 110 may receive a second signal having a second frequency band and output a signal in a specific frequency band when the first receiving switch RS1 is turned off.

[0160] According to example embodiments, the first reception circuit 521 may further include a plurality of inductors connected in parallel to the first, second, and third reception inductors RL1, RL2, and RL3.

[0161] For example, the first receiving circuit 521 may include fourth and fifth receiving inductors connected in parallel to the first, second and third receiving inductors RL1, RL2 and RL3. In addition, the first receiving circuit 521 may include a second receiving switch connected between the fourth and fifth receiving inductors.

[0162] In this case, the processor 110 may control at least a portion of the first receiving switch RS1 and the second receiving switch to receive signals in different frequency bands. For example, the processor 110 may close the first receiving switch RS1 and the second receiving switch in response to receiving a third signal in a third frequency band higher than the first frequency band through the receiving terminal RT.

[0163] However, the number and configuration of the inductors connected in parallel to the first reception inductor RL1 are not limited to the above example.

[0164] Referring to the above configuration, the processor 110 according to example embodiments may receive signals having different frequency bands. In addition, the processor 110 may control the first reception switch RS1 included in the first reception circuit 521 to receive signals having different frequency bands.

[0165] Therefore, the reception circuit system 500 can receive signals in different frequency bands through a single reception structure (or reception (RX) chain) including the first reception circuit 521 , the second reception circuit 522 , the low noise amplifier 551 , and the reception mixer 540 .

[0166] As a result, receive circuitry 500 may have a significantly reduced area.

[0167] In addition, according to example embodiments, the first reception circuit 521 may further include a first reception capacitor RC1 connected between the first reception inductor RL1 and the ground.

[0168] For example, the first reception circuit 521 may include a first reception capacitor RC1 connected to at least a portion of the first reception inductor RL1 , the second reception inductor RL2 , and the third reception inductor RL3 .

[0169] For example, the first receiving circuit 521 may include a first receiving capacitor RC1 connected in series between the first receiving inductor RL1 and the ground when the first receiving switch RS1 is turned off.

[0170] In addition, the first receiving circuit 521 may include a first receiving capacitor RC1 connected to the first receiving inductor RL1 , the second receiving inductor RL2 , and the third receiving inductor RL3 when the first receiving switch RS1 is closed.

[0171] According to example embodiments, the processor 110 may control the capacitance of the first reception capacitor RC1 included in the first reception circuit 521 so that a signal in a specific frequency band is output through the first reception circuit 521 .

[0172] For example, the processor 110 may control the capacitance of the first reception capacitor RC1 so that the first reception capacitor RC1 resonates with at least one of the inductors connected to the first reception capacitor RC1.

[0173] For example, the processor 110 may control the capacitance of the first reception capacitor RC1 to be a first capacitance so that the first reception capacitor RC1 resonates with the first reception inductor RL1 , the second reception inductor RL2 , and the third reception inductor RL3 when the first reception switch RS1 is closed.

[0174] In addition, the processor 110 may control the capacitance of the first reception capacitor RC1 to be a second capacitance lower than the first capacitance, so that the first reception capacitor RC1 resonates with the first reception inductor RL1 when the first reception switch RS1 is turned off.

[0175] Referring to the above-described components, the processor 110 according to example embodiments may control the capacitance of the first reception capacitor RC1 based on the inductance value of the first reception circuit 521 controlled by the first reception switch RS1 .

[0176] As a result, the processor 110 may increase the impedance value of the first receiving circuit 521. Also, the receiving circuit system 500 according to example embodiments may improve the frequency gain of the first receiving circuit 521.

[0177] Furthermore, the processor 110 can significantly reduce the number and / or size of capacitors required for receiving signals in different frequency bands in the first receiving circuit 521. Furthermore, the processor 110 can significantly reduce losses caused by capacitors included in the first receiving circuit 521.

[0178] As a result, the reception circuit system 500 according to example embodiments may improve power efficiency of an operation for receiving signals in different frequency bands.

[0179] Refer to Figure 5 and Figure 7 , the second receiving circuit 522 according to example embodiments may include inductors coupled to each other and a plurality of inductors respectively connected in parallel to the inductors.

[0180] Figure 7 The second receiving circuit 522 shown in FIG. 5 can be understood as Figure 5 An example of the second receiving circuit 522.

[0181] In an example embodiment, the second receiving circuit 522 may include a receiving inductor L22 and a receiving inductor L23 connected in parallel with the receiving inductor L21. The receiving inductor L22 and the receiving inductor L23 may be connected in series.

[0182] In addition, the second receiving circuit 522 may include a receiving switch RS21 connected between the receiving inductor L22 and the receiving inductor L23. In addition, the second receiving circuit 522 may further include a variable capacitor RC2 connected in parallel with the receiving inductors L21, L22 and L23.

[0183] The second receiving circuit 522 may further include a receiving inductor L31 coupled to the receiving inductor L21 .

[0184] In addition, the second receiving circuit 522 may include a receiving inductor L32 and a receiving inductor L33 connected in parallel with the receiving inductor L31. The receiving inductor L32 and the receiving inductor L33 may be connected in series.

[0185] In addition, the second receiving circuit 522 may include a receiving switch RS31 connected between the receiving inductor L32 and the receiving inductor L33. In addition, the second receiving circuit 522 may further include a variable capacitor RC3 connected in parallel with the receiving inductors L31, L32 and L33.

[0186] The second receiving circuit 522 may be referred to as an impedance matching circuit for impedance matching of a signal received through the low noise amplifier 551. For example, the second receiving circuit 522 may be referred to as an inter-stage matching circuit, but example embodiments are not limited thereto.

[0187] In an example embodiment, the processor 110 may control at least a portion of the reception switch RS21 and the reception switch RS31 included in the second reception circuit 522 so that a signal having a specific reception power received through the reception terminal RT (or the low noise amplifier 551 ) is output through the second reception circuit 522 .

[0188] For example, the processor 110 may turn off the reception switch RS21 included in the second reception circuit 522 in response to receiving a signal having the first reception power through the reception terminal RT.

[0189] Furthermore, the processor 110 may close the reception switch RS21 included in the second reception circuit 522 in response to receiving a signal having a second reception power lower than the first reception power through the reception terminal RT.

[0190] For example, the processor 110 may close the first receiving switch RS1 to increase the power of the signal output by the second receiving circuit 522. In addition, the processor 110 may open the receiving switch RS21 to reduce the power of the signal output by the second receiving circuit 522.

[0191] For example, the processor 110 may turn off the reception switch RS31 included in the second reception circuit 522 in response to a request to increase the power of a signal output through the second reception circuit 522 .

[0192] The processor 110 may close the reception switch RS31 included in the second reception circuit 522 in response to a request to reduce the power of a signal output through the second reception circuit 522 .

[0193] For example, the processor 110 may open the receiving switch RS31 to increase the power of the signal output by the second receiving circuit 522. In addition, the processor 110 may close the receiving switch RS31 to reduce the power of the signal output by the second receiving circuit 522.

[0194] For example, the processor 110 may close the reception switch RS21 and open the reception switch RS31 in response to a request to increase the power of the signal output through the second reception circuit 522 .

[0195] Furthermore, the processor 110 may open the reception switch RS21 and close the reception switch RS31 in response to a request to reduce the power of the output signal SOUT.

[0196] Referring to the above components, the processor 110 may control at least a portion of the reception switch RS21 and the reception switch RS31 to control the power of the signal output through the second reception circuit 522 .

[0197] As a result, the reception circuit system 500 according to example embodiments may improve power efficiency of an operation for receiving signals having different reception powers.

[0198] The receiving circuit system 500 may include a receiving mixer configured to down-convert a signal received through the second receiving circuit 522 .

[0199] For example, the reception mixer 540 may down-convert a signal received through the second reception circuit 522 into a baseband signal based on a signal received from the local oscillator LO.

[0200] Referring to the above components, the processor 110 may control at least a portion of the first receiving circuit 521 and the second receiving circuit 522 to receive signals having different frequency bands as baseband signals after being converted.

[0201] Therefore, the reception circuit system 500 can receive signals in different frequency bands through a single reception structure (or RX chain) including the first reception circuit 521 , the second reception circuit 522 , the low noise amplifier 551 , and the reception mixer 540 .

[0202] In addition, the processor 110 may control at least a portion of the first receiving circuit 521 and the second receiving circuit 522 to receive different signals (received at different receiving powers) as the converted signals having specific powers.

[0203] Therefore, the reception circuit system 500 can receive signals with different powers through a single reception structure (or RX chain) including the first reception circuit 521 , the second reception circuit 522 , and the reception mixer 540 .

[0204] According to the above-described components, the receiving circuit system 500 can have a significantly reduced area.

[0205] Figure 8 is a block diagram of an electronic circuit system according to an example embodiment.

[0206] Reference Figure 8 , the electronic circuit system 600 according to example embodiments may include a radio frequency integrated circuit (RFIC) 620 , the processor 110 , a radio frequency front end (RFFE) 640 , and an antenna 610 .

[0207] The electronic circuit system 600 may include an RFFE 640 that transmits or receives an RF signal through an antenna 610 .

[0208] In some embodiments, antenna 610 is an array antenna including multiple antenna elements for transmission and / or reception. In other embodiments, antenna 610 has a single antenna element for transmission and reception, or has a first antenna element for transmission and a second antenna element for reception.

[0209] The antenna 610 may be implemented as a single antenna that transmits and receives RF signals of a specific frequency band. For example, the antenna 610 may include an antenna for transmitting RF signals and an antenna for receiving RF signals as separate components from each other.

[0210] In an example embodiment, the RFFE 640 may transmit and / or receive multiple RF signals in different frequency bands via the antenna 610 .

[0211] In addition, the RFFE 640 may perform pre-processing on a signal received through the antenna 610. For example, the RFFE 640 may pre-process an RF signal received through the antenna 610.

[0212] To this end, the RFFE 640 may include phase shifters, bandpass filters, and / or switching circuits connected to the antenna 610.

[0213] The RFFE 640 may transmit the RF signal received from the antenna 610 to the RFIC 620. The RFFE 640 may also transmit the RF signal transmitted from the RFIC 620 to the antenna 610.

[0214] The electronic circuit system 600 may include an RFIC 620 connected between the RFFE 640 and the processor 110 .

[0215] The electronic circuit system 600 may include an RFIC 620 that converts a baseband signal into an RF signal or converts an RF signal into a baseband signal.

[0216] When an RF signal is received, the RFIC 620 may convert the RF signal pre-processed by the RFFE 640 into a baseband signal to be processed by the processor 110 .

[0217] For example, the RFIC 620 may convert a baseband signal generated by the processor 110 into an RF signal of about 700 MHz to about 3 GHz used in a first network (eg, a legacy network) when transmitting the baseband signal.

[0218] For example, the RFIC 620 may convert a baseband signal generated by the processor 110 into an RF signal of a Sub6 frequency band (less than approximately 6 GHz) used in a second network (eg, a 5G network) when transmitting the baseband signal.

[0219] For example, the RFIC 620 may convert a baseband signal generated by the processor 110 into an RF signal of a 5G Above 5 frequency band (approximately 6 GHz to approximately 60 GHz) used in a third network (eg, a 5G network) when transmitting the baseband signal.

[0220] According to example embodiments, the RFIC 620 may include a transceiver including a transmission circuit 621 and a receiver 622 .

[0221] Figure 8 The transmitting circuit 621 with the processor 110 shown in FIG. Figure 4 The electronic circuit system 100A has the same configuration. Optionally, the transmitting circuit 621 may be connected to Figure 1 The electronic circuit system 100 has the same configuration.

[0222] also, Figure 8 The receiver 622 shown in FIG. Figure 5 The receiving circuit system 500 has the same configuration.

[0223] Therefore, the same reference numerals are used to denote the same or substantially the same components, and redundant descriptions are omitted.

[0224] In an example embodiment, the processor 110 may control at least a portion of the first transmission circuit 121 and the second transmission circuit 122 of the transmission circuit 621 to transmit signals in different frequency bands through the antenna 610 .

[0225] For example, the processor 110 may control at least a portion of switches included in the first transmission circuit 121 and the second transmission circuit 122 of the transmission circuit 621 to transmit signals in different frequency bands through the antenna 610 .

[0226] In addition, the processor 110 may control at least a portion of the first transmission circuit 121 and the second transmission circuit 122 of the transmission circuit 621 to transmit signals in different frequency bands at different transmission powers through the antenna 610 .

[0227] As a result, the electronic circuit system 600 according to example embodiments may transmit signals in different frequency bands at different transmission powers using a single transmission circuit 621 .

[0228] Furthermore, the processor 110 according to example embodiments may control at least a portion of the first receiving circuit 521 and the second receiving circuit 522 of the receiver 622 to receive signals in different frequency bands through the antenna 610 .

[0229] For example, the processor 110 may control at least one of switches included in the first receiving circuit 521 and the second receiving circuit 522 of the receiver 622 to receive signals in different frequency bands through the antenna 610 .

[0230] Therefore, the electronic circuit system 600 may receive signals in different frequency bands through a single receiver 622 including the first receiving circuit 521 , the second receiving circuit 522 , and the receiving mixer 540 .

[0231] In addition, the processor 110 may control at least a portion of the first receiving circuit 521 and the second receiving circuit 522 to receive signals having different receiving powers.

[0232] Therefore, the electronic circuit system 600 may receive signals having different powers through a single receiver 622 including the first receiving circuit 521 , the second receiving circuit 522 , and the receiving mixer 540 .

[0233] According to the above-described components, the electronic circuit system 600 according to example embodiments may have a significantly reduced area.

[0234] Fig. 9 is a block diagram of an IoT device including an electronic circuit system according to an example embodiment.

[0235] Reference Fig. 9, the Internet of Things (IoT) may refer to a network between things using wired or wireless communications. An IoT device may include a device having an accessible wired interface or a wireless interface and communicating with one or more other devices through the wired interface or the wireless interface to send or receive data. In an IoT device, the accessible interface may include a wired local area network (LAN) interface, a wireless local area network (WLAN) interface (such as a Wi-Fi interface), a wireless personal area network (WPAN) interface (such as a Bluetooth interface), a wireless universal serial bus (wireless USB) interface, a Zigbee interface, a near field communication (NFC) interface, a radio frequency identification (RFID) interface, a power line communication (PLC) interface, or a modem communication interface capable of connecting to a mobile cellular network (such as 3G, LTE, 4G, or 5G). The Bluetooth interface may support Bluetooth Low Energy (BLE).

[0236] For example, the IoT device 900 may include a communication interface 920 for communicating with an external entity. The communication interface 920 may be, for example, a wired local area network (LAN) interface, a Bluetooth interface, a Wi-Fi interface, a Zigbee interface, a PLC interface, or a modem communication interface capable of connecting to a mobile cellular network such as 3G, LTE, 4G, or 5G.

[0237] Communication interface 920 may include a transmitter and / or a receiver. Fig. 9 The communication interface 920 shown in FIG. 1 can be understood as Figure 8 The RFIC 620 has substantially the same configuration. For example, Fig. 9 The communication interface 920 may include Figure 8 The transmitting circuit 621 and the receiver 622 are provided.

[0238] The IoT device 900 may send information to and / or receive information from an access point or gateway via a transmitter and / or a receiver. In addition, the IoT device 900 may communicate with a user device or another IoT device to send and / or receive control information or data of the IoT device 900.

[0239] The IoT device 900 may include a processor 910 that performs operations. Fig. 9 The processor 910 shown in FIG. 9 may be referred to as Figures 1 to 8 The processor 110 shown in FIG. 1 has substantially the same configuration.

[0240] According to example embodiments, the processor 910 may control at least one switch included in the communication interface 920 so that the IoT device 900 transmits and / or receives signals in different frequency bands.

[0241] The IoT device 900 may be powered internally by a battery or externally by a power source. In addition, the IoT device 900 may include a display 940 configured to display an internal state or data. A user may control the IoT device 900 through a user interface (UI) of the display 940 of the IoT device 900. The IoT device 900 may transmit an internal state and / or data to an external entity through a transmitter, and may receive a control command and / or data from an external entity through a receiver.

[0242] The memory 930 may store a command code, control data, or user data for controlling the IoT device 900. The memory 930 may include at least one selected from a volatile memory and a non-volatile memory. The non-volatile memory may include at least one of various memories such as a read-only memory (ROM), a programmable ROM (PROM), an electrically programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a flash memory, a phase change RAM (PRAM), a magnetic RAM (MRAM), a resistive RAM (ReRAM), or a ferroelectric RAM (FRAM). The volatile memory may include at least one of various memories such as a dynamic RAM (DRAM), a static RAM (SRAM), or a synchronous DRAM (SDRAM).

[0243] The IoT device 900 may further include a storage device. The storage device may include at least one of a non-volatile medium such as a hard disk (HDD), a solid state drive (SDD), an embedded multimedia card (eMMC), and a universal flash memory (USF). The storage device may store user information provided through an input / output unit (I / O) 950 and a plurality of sensing information collected through a sensor 960.

[0244] Fig.10 1 is a block diagram of a mobile terminal 1000 to which an electronic circuit system according to an example embodiment is applied. The mobile terminal 1000 may include a processor 1100, a memory 1200, a display 1300, and a radio frequency (RF) module 1410. In addition, the mobile terminal 1000 may further include various components such as a lens, a sensor, or an audio module.

[0245] The processor 1100 may be implemented as a system on chip (SoC), and may include a central processing unit (CPU) 1110, a RAM 1120, a power management unit (PMU) 1130, a memory interface (memory I / F) 1140, a display controller (DCON) 1150, a modem 1160, and a bus 1170. The processor 1100 may also include various intellectual property rights (IPs). When the function of a modem chip is integrated therein, the processor 1100 may be referred to as a "ModAP", but example embodiments are not limited thereto.

[0246] Fig.10 The processor 1100 shown in FIG. Figures 1 to 8 The processors 110 have substantially the same configuration and functions.

[0247] The CPU 1110 may control the overall operation of the mobile terminal 1000. The CPU 1110 may control the operation of each component of the processor 1100. The CPU 1110 may be implemented as a multi-core processor. A multi-core processor is a computing component having two or more independent cores.

[0248] The RAM 1120 may temporarily store programs, data, or instructions. For example, the programs and / or data stored in the memory 1200 may be temporarily stored in the RAM 1120 according to the control of the CPU 1110 or the boot code. The RAM 1120 may be implemented as a DRAM or an SRAM.

[0249] The PMU 1130 may manage power of each component of the processor 1100. The PMU 1130 may also determine an operating state of each component of the processor 1100, and may control operations of the components.

[0250] The memory interface 1140 may control the overall operation of the memory 1200 and may control data exchange between each component of the processor 1100 and the memory 1200. The memory interface 1140 may write or read data in or from the memory 1200 based on a request of the CPU 1110.

[0251] The display controller 1150 may transmit image data to be displayed on the display 1300 to the display 1300. The display 1300 may be implemented as a flat panel display or a flexible display such as a liquid crystal display (LCD) and an organic light emitting diode (OLED).

[0252] The modem 1160 may modulate data to be transmitted in a wireless environment suitable for wireless communication, and may restore received data. The modem 1160 may perform digital communication with the RF module 1410.

[0253] The RF module 1400 may convert a high frequency signal received via an antenna into a low frequency signal and provide the low frequency signal to the modem 1160. The RF module 1410 may convert a low frequency signal received from the modem 1160 into a high frequency signal and transmit the high frequency signal via an antenna to a free space outside the mobile terminal 1000. The RF module 1410 may amplify or filter a signal.

[0254] Fig.10 The RF module 1410 shown in FIG. Figure 8The electronic circuit system 600 shown in FIG. 14 has substantially the same configuration. Therefore, the RF module 1410 may include a switch connected to a plurality of inductors.

[0255] The processor 1100 may control electronic circuits (eg, Figure 2A The electronic circuit 120A) enables the mobile terminal 1000 to send and / or receive signals in different frequency bands.

[0256] For example, the processor 1100 may control at least one switch included in the electronic circuit of the RF module 1410 to transmit or receive signals in different frequency bands to or from a free space outside the mobile terminal 1000 .

[0257] As a result, the mobile terminal 1000 can support broadband communication while reducing power consumption for the broadband communication.

[0258] As described above, the processor 110 according to example embodiments may control switches connected to a plurality of inductors in at least one electronic circuit to transmit signals in different frequency bands.

[0259] Therefore, the electronic circuit system 100 according to example embodiments may transmit signals in different frequency bands through a single transmission structure.

[0260] Furthermore, the processor 110 according to example embodiments may control switches connected to a plurality of inductors in at least one electronic circuit to receive signals in different frequency bands.

[0261] Therefore, the reception circuit system 500 according to example embodiments may receive signals in different frequency bands through a single reception structure.

[0262] As a result, the electronic circuit system 100 , the receiving circuit system 500 , and the electronic circuit system 600 according to various example embodiments may each have a significantly reduced area.

[0263] Furthermore, the processor 110 according to example embodiments may control the capacitance of the variable capacitor based on the inductance of the electronic circuit controlled by the switch.

[0264] Thus, processor 110 can significantly reduce the number and / or size of capacitors used in electronic circuit 120 for transmitting signals in different frequency bands (e.g., relative to capacitors in circuits of the prior art). In addition, processor 110 can significantly reduce losses caused by capacitors included in electronic circuits.

[0265] As a result, the electronic circuit system 100 according to example embodiments may improve power efficiency for an operation of transmitting signals in different frequency bands or at different transmission powers.

[0266] As set forth above, the electronic circuit according to example embodiments may control a switch connected to an inductor to transmit and / or receive signals in different frequency bands.

[0267] As a result, the electronic circuitry may occupy a significantly reduced area.

[0268] While example embodiments have been shown and described above, it will be apparent to those skilled in the art that modifications and variations may be made without departing from the scope of the inventive concept as defined by the appended claims.

Claims

1. An electronic circuit comprising: a first inductor connected to the input terminal; a second inductor and a third inductor connected in series and in parallel with the first inductor; a first switch connected between the second inductor and the third inductor; as well as a processor electrically connected to the first switch, The processor is configured as follows: In response to the first request, closing the first switch so that a first signal in a first frequency band is output through an output side of the electronic circuit; and In response to a second request different from the first request, the first switch is turned off so that a second signal in a second frequency band lower than the first frequency band is output through the output side.

2. The electronic circuit according to claim 1, further comprising: a variable capacitor connected to the first inductor, the second inductor and the third inductor, The processor controls the capacitance of the variable capacitor so that the variable capacitor resonates with at least one of the first to third inductors connected to the variable capacitor.

3. The electronic circuit according to claim 2, wherein: The processor is configured as: controlling the capacitance of the variable capacitor to be a first capacitance so that the variable capacitor resonates with the first to third inductors when the first switch is closed; and The capacitance of the variable capacitor is controlled to be a second capacitance lower than the first capacitance so that the variable capacitor resonates with the first inductor when the first switch is turned off.

4. The electronic circuit according to claim 2, wherein: The first inductor, the second inductor and the third inductor are input-side inductors, and the electronic circuit further comprises: a first output-side inductor electromagnetically coupled to the first inductor; a second output-side inductor and a third output-side inductor connected in series and in parallel to the first output-side inductor; and an output-side switch connected between the second output-side inductor and the third output-side inductor, The processor is configured as follows: In response to a request to increase the transmission power of the transmission signal, closing the first switch; and In response to a request to reduce the transmission power of the transmission signal, the first switch is opened.

5. The electronic circuit according to claim 4, wherein: The processor is configured as: In response to a request to increase the transmission power of the transmission signal, turning off the output-side switch; and In response to a request to reduce the transmission power of the transmission signal, the output-side switch is closed.

6. The electronic circuit according to claim 4, further comprising: an output-side variable capacitor connected to the first output-side inductor, the second output-side inductor, and the third output-side inductor, The processor controls the capacitance of the output-side variable capacitor so that the output-side variable capacitor resonates with at least one output-side inductor among the output-side inductors connected to the output-side variable capacitor.

7. The electronic circuit according to claim 1, wherein: The electronic circuit further comprises: a fourth inductor and a fifth inductor connected in parallel with the first inductor and connected in series; and a second switch connected between the fourth inductor and the fifth inductor, in, The processor closes the first switch and the second switch in response to the third request so that a third signal in a third frequency band higher than the first frequency band is output through the output side.

8. The electronic circuit according to claim 7, wherein: The processor opens the first switch and closes the second switch in response to the fourth request, so that a fourth signal in a fourth frequency band that is higher than the first frequency band and lower than the third frequency band is output through the output side.

9. The electronic circuit according to claim 1, further comprising: a transmit mixer connected to the first inductor via the input terminal and configured to up-convert a baseband signal; as well as an amplifier configured to amplify the first signal or the second signal outputted through the output side, The baseband signal up-converted by the transmission mixer is applied to the first inductor through the input terminal.

10. An electronic circuit system comprising an electronic circuit, the electronic circuit system comprising: a transmit mixer configured to up-convert a baseband signal; a first transmitting circuit configured to receive a signal up-converted from a baseband signal by a transmitting mixer; an amplifier configured to amplify the signal output from the first transmitting circuit and output the amplified signal; a second transmitting circuit having an output side and receiving the amplified signal from the amplifier; as well as a processor, electrically connected to the first transmission circuit and the second transmission circuit, Wherein, the first sending circuit includes: a first inductor; a second inductor and a third inductor connected in parallel with the first inductor and connected in series; and A first switch is connected between the second inductor and the third inductor, and The processor controls the first switch so that signals in different frequency bands are output through the output side.

11. The electronic circuit system according to claim 10, wherein: The processor is configured as: In response to the first request, closing the first switch so that a first signal in a first frequency band is output through the output side; and In response to a second request different from the first request, the first switch is opened so that a second signal in a second frequency band lower than the first frequency band is transmitted through the output side.

12. The electronic circuit system according to claim 11, wherein: The first transmitting circuit further includes a variable capacitor connected to the first inductor, the second inductor, and the third inductor, and The processor controls the capacitance of the variable capacitor such that the variable capacitor resonates with at least one inductor connected to the variable capacitor.

13. The electronic circuit system according to claim 12, wherein: The first transmitting circuit also includes: a fourth inductor and a fifth inductor connected in parallel with the first inductor and connected in series; and a second switch connected between the fourth inductor and the fifth inductor, and The processor closes the first switch and the second switch in response to the third request so that a third signal in a third frequency band higher than the first frequency band is transmitted through the output side.

14. The electronic circuit system according to claim 11, wherein: The second transmitting circuit comprises: a first output inductor connected to the amplifier; a second output inductor and a third output inductor connected in parallel to the first output inductor and connected in series; and The first output switch is disposed between the second output inductor and the third output inductor, and The processor controls at least a portion of the first switch and the first output switch so that signals in different frequency bands are output through the output side.

15. The electronic circuit system according to claim 14, wherein: The second transmitting circuit also includes: a fourth output inductor coupled to the first output inductor; a fifth output inductor and a sixth output inductor connected in parallel to the fourth output inductor; and a second output switch connected between the fifth output inductor and the sixth output inductor, and The processor controls at least a part of the first output switch and the second output switch to change the inductance of the second transmission circuit so that the signal output by the amplifier is transmitted through the output side at a specific transmission power.

16. A receiving circuit system, comprising: A first receiving circuit is configured to receive a radio frequency signal at a receiving terminal; a low noise amplifier configured to amplify a signal output from the first receiving circuit; A second receiving circuit is configured to receive the signal amplified by the low noise amplifier; a receiving mixer configured to down-convert a signal output from the second receiving circuit into a baseband signal; as well as a processor connected to the first receiving circuit and the second receiving circuit, Wherein, the first receiving circuit includes: a first receiving inductor; a second reception inductor and a third reception inductor connected in parallel with the first reception inductor; and a first receiving switch connected between the second receiving inductor and the third receiving inductor, wherein when the first receiving switch is closed, the second receiving inductor and the third receiving inductor are connected in series, and The processor controls the first receiving switch to change the inductance of the first receiving circuit so that signals in different frequency bands received at the receiving terminal are output by the first receiving circuit.

17. The receiving circuit system according to claim 16, wherein: The processor is configured as: In response to receiving a first signal in a first frequency band at the receiving terminal, closing a first receiving switch; and In response to receiving a second signal in a second frequency band lower than the first frequency band at the receiving terminal, the receiving switch is opened.

18. The receiving circuit system according to claim 17, wherein: The first receiving circuit also includes: a fourth reception inductor and a fifth reception inductor connected in parallel with the first reception inductor and connected in series with each other; and a second receiving switch connected between the first receiving inductor and the fifth receiving inductor, and The processor closes the first receiving switch and the second receiving switch in response to receiving a third signal in a third frequency band higher than the first frequency band at the receiving terminal.

19. The receiving circuit system according to claim 16, wherein: The second receiving circuit comprises: a first input inductor connected to a low noise amplifier; a second input inductor and a third input inductor connected in parallel with the first input inductor; and A first input switch is disposed between the second input inductor and the third input inductor, and The processor controls at least one of the first receiving switch and the first input switch so that a signal in a different frequency band is output by the second receiving circuit.

20. The receiving circuit system according to claim 17, wherein: The first receiving circuit further includes a first receiving capacitor connected between the first receiving inductor and ground, and The processor controls the capacitance of the first receive capacitor such that the first receive capacitor resonates with at least one receive inductor connected to the first receive capacitor.

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