Wireless communication device for simultaneously receiving multiple types of signals and related method

Abstract

A wireless communication device for simultaneously receiving multiple types of signals and a related method are provided. The wireless communication device comprises at least one low noise amplifier, a first conversion circuit, a second conversion circuit, a first filter and a second filter. The at least one low noise amplifier amplifies an initial signal received by an antenna to generate at least one input signal, wherein the first conversion circuit and the second conversion circuit perform conversion operation according to the at least one input signal to generate a first converted signal and a second converted signal respectively. In particular, the first filter performs a filtering operation corresponding to a first type of signals on the first converted signal, and the second filter performs a filtering operation corresponding to a second type of signals on the second converted signal.

Description

Technical Field

[0001] The present invention relates to reception control of a wireless communication device, and more particularly to a wireless communication device for simultaneously receiving multiple types of signals and a related method. Background Art

[0002] In a radio frequency receiver, a Bluetooth signal receiving channel and a wireless local area network (WLAN) signal receiving channel may share certain components such as antennas, low noise amplifiers, etc. However, when certain signal processing (such as filtering) is performed at the nodes of these shared components, it is difficult to optimize both the Bluetooth signal and the WLAN signal. For example, when the radio frequency receiver receives a Bluetooth signal and a WLAN signal at the same time, if the filtering optimization is performed for one of the Bluetooth signal and the WLAN signal at the nodes of the shared components, the filtering operation will cause the power of the other of the Bluetooth signal and the WLAN signal to be attenuated.

[0003] Therefore, a novel receiver architecture and related method are needed to ensure the reception performance of Bluetooth signals and WLAN signals under a shared antenna architecture. Summary of the invention

[0004] The object of the present invention is to provide a wireless communication device and a related method for simultaneously receiving multiple types of signals, so as to solve the problem that the reception performance of Bluetooth signals and wireless local area network signals cannot be taken into account at the same time.

[0005] At least one embodiment of the present invention provides a wireless communication device for simultaneously receiving multiple types of signals. The wireless communication device includes at least one front-stage low noise amplifier (LNA), a first conversion circuit, a second conversion circuit, a first filter, and a second filter, wherein the at least one front-stage low noise amplifier is coupled to an antenna, and the first filter and the second filter are respectively coupled to the first conversion circuit and the second conversion circuit. The at least one front-stage low noise amplifier is used to amplify the initial signal received by the antenna to generate at least one input signal, wherein the initial signal includes the multiple types of signals, and the multiple types of signals include a first type of signal and a second type of signal. The first conversion circuit is used to perform a conversion operation based on the at least one input signal to generate a first converted signal, and the second conversion circuit is used to perform the conversion operation based on the at least one input signal to generate a second converted signal. The first filter is used to filter the first converted signal to reduce the power of signals other than the first type of signals in the first converted signal, so that the first receiving channel coupled to the first filter can process the first type of signals in the first converted signal, and the second filter is used to filter the second converted signal to reduce the power of signals other than the second type of signals in the second converted signal, so that the second receiving channel coupled to the second filter can process the second type of signals in the second converted signal.

[0006] At least one embodiment of the present invention provides a method for simultaneously receiving multiple types of signals in a wireless communication device. The method includes: using at least one pre-stage low noise amplifier of the wireless communication device to amplify the initial signal received by the antenna to generate at least one input signal, wherein the initial signal includes the multiple types of signals, and the multiple types of signals include a first type of signal and a second type of signal; using a first conversion circuit of the wireless communication device to perform a conversion operation based on the at least one input signal to generate a first converted signal; using a second conversion circuit of the wireless communication device to perform the conversion operation based on the at least one input signal to generate a second converted signal; using a first filter of the wireless communication device to filter the first converted signal to reduce the power of signals other than the first type of signal in the first converted signal, so that a first receiving channel coupled to the first filter can process the first type of signal in the first converted signal; and using a second filter of the wireless communication device to filter the second converted signal to reduce the power of signals other than the second type of signal in the second converted signal, so that a second receiving channel coupled to the second filter can process the second type of signal in the second converted signal.

[0007] At least one embodiment of the present invention provides a method for simultaneously receiving multiple types of signals in a wireless communication device. The method includes: using a pre-stage low noise amplifier of the wireless communication device to amplify an initial signal received by an antenna to generate an input signal, wherein the initial signal includes the multiple types of signals, and the multiple types of signals include a first type of signal and a second type of signal; using a conversion circuit of the wireless communication device to convert the input signal to generate a converted signal; and controlling the configuration of a filter coupled to the conversion circuit according to the enable state of a function of receiving the first type of signal or the second type of signal, wherein the filter is used to filter the converted signal to reduce the power of signals other than the first type of signal and the second type of signal in the converted signal.

[0008] The wireless communication device and method provided by the embodiments of the present invention can configure multiple signal channels at the rear end of the antenna, and the filters configured on each channel are optimized for different types of signals (such as Bluetooth signals and wireless LAN signals). Therefore, these different types of signals can be properly transmitted to the receiving channel at the rear end without being interfered by the filters on other channels. In addition, the present invention can respond to the enable status of the function of receiving a specific type of signal to determine whether to turn on the filter on the shared channel to avoid the filter from interfering with the specific type of signal. Therefore, the present invention can ensure the reception efficiency of different types of signals (such as Bluetooth signals and wireless LAN signals) under the architecture of a shared antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 FIG. 4 is a schematic diagram of a wireless communication device according to an embodiment of the present invention.

[0010] Figure 2 FIG. 4 is a schematic diagram of a control scheme for receiving multiple types of signals by an electronic device according to an embodiment of the present invention.

[0011] Figure 3 The diagram is a flowchart of a method for simultaneously receiving multiple types of signals in a wireless communication device according to an embodiment of the present invention.

[0012] Figure 4 FIG. 4 is a schematic diagram of a wireless communication device according to another embodiment of the present invention.

[0013] Figure 5 FIG. 4 is a schematic diagram of a wireless communication device according to another embodiment of the present invention.

[0014] Figure 6FIG. 4 is a schematic diagram of a working process of a method for simultaneously receiving multiple types of signals in a wireless communication device according to another embodiment of the present invention. DETAILED DESCRIPTION

[0015] Figure 1 Schematic diagram of a wireless communication device 10 according to an embodiment of the present invention, wherein the wireless communication device 10 may be a receiver capable of simultaneously receiving multiple types of signals such as Bluetooth signals and wireless local area network (WLAN) signals. In some embodiments, the wireless communication device 10 may be a part of a transceiver (e.g., a receiver in the transceiver) capable of simultaneously receiving multiple types of signals (e.g., Bluetooth signals and wireless local area network signals), but the present invention is not limited thereto. Figure 1 As shown, the wireless communication device 10 may include an antenna 50, a front-stage low noise amplifier (LNA) 110 (labeled as “LNA1” in the figure for simplicity), a conversion circuit such as a balanced to unbalanced (Balun) converter 120, a rear-stage low noise amplifier 130A and 130B, a filter such as an N-path filter 100, AC coupling capacitors CA1, CA2, CB1 and CB2, downconverters 140A and 140B, an amplifier 150A for amplifying a wireless LAN signal (labeled as “WLAMP” in the figure for simplicity), an amplifier 150B for amplifying a Bluetooth signal (labeled as “BT AMP” in the figure for simplicity), low-pass filters 160A and 160B, an analog-to-digital converter (ADC) 170A for performing analog-to-digital conversion on the wireless LAN signal (labeled as “WLAMP” in the figure) ADC” for simplicity), an analog-to-digital converter 170B for analog-to-digital conversion of Bluetooth signals (labeled “BT ADC” in the figure for simplicity), a digital circuit 180A for digital signal processing of wireless LAN signals (labeled “WL digital” in the figure for simplicity), and a digital circuit 180B for digital signal processing of Bluetooth signals (labeled “BT digital” in the figure for simplicity).

[0016] In this embodiment, the pre-stage low noise amplifier 110 is coupled to the antenna 50 and can be used to receive the initial signal V AIR Amplifies the input signal V LNA1 , where the initial signal V AIRIt may include multiple types of signals such as a first type of signal (such as a wireless LAN signal) and a second type of signal (such as a Bluetooth signal). Therefore, the input signal V LNA1 The first type of signal and the second type of signal may be amplified (which may be referred to as the input signal V LNA1 The balun converter 120 is coupled to the front-stage low noise amplifier 110 and can be used to convert the input signal V LNA1 Perform a conversion operation (such as single-ended to differential signal conversion) to generate a converted signal Vd LNA1 The N-channel filter 100 is coupled to the Balun converter 120 and is used to convert the converted signal Vd LNA1 In this embodiment, the N-channel filter 100 may include at least one mixer (eg, mixers M3 and M4) and a capacitor C Npath , where capacitor C Npath is coupled to the at least one mixer (eg, coupled between the mixers M3 and M4). In this embodiment, the mixers M3 and M4 may be coupled to the at least one mixer (eg, coupled between the mixers M3 and M4) according to the frequency LO. Npath Drive capacitor C Npath For example, mixers M3 and M4 can be considered as being connected to capacitor C Npath The equivalent resistor connected to produce a filtering effect, wherein since the mixers M3 and M4 have the function of frequency up / down, the mixers M3 and M4 and the capacitor C Npath The network formed can convert the converted signal Vd LNA1 Generates a frequency LO Npath In this embodiment, the wireless LAN signal is carried at the frequency LO WL The Bluetooth signal is carried on the frequency LO BT Therefore, when the frequency LO Npath Set to LO WL When the N-channel filter 100 can reduce the converted signal Vd LNA1 The power of the signal other than the wireless LAN signal in the Npath Set to LO BT When the N-channel filter 100 can reduce the converted signal Vd LNA1 The power of signals other than Bluetooth signals.

[0017] In this embodiment, the post-stage low noise amplifier 130A, the AC coupling capacitors CA1 and CA2, the downconverter 140A, the amplifier 150A, the low pass filter 160A, the analog-to-digital converter 170B and the digital circuit 180A can form a wireless local area network receiving channel coupled to the Balun converter 120 and the N-channel filter 100 for processing the converted signal Vd LNA1 In addition, the post-stage low noise amplifier 130B, the AC coupling capacitors CB1 and CB2, the downconverter 140B, the amplifier 150B, the low pass filter 160B, the analog-to-digital converter 170B and the digital circuit 180B can form a Bluetooth receiving channel coupled to the Balun converter 120 and the N-channel filter 100 for processing the converted signal Vd LNA1 Bluetooth signal in.

[0018] In this embodiment, the downconverter 140A (eg, the mixers MA1 and MA2 therein) may be configured to generate a frequency LO according to the frequency LO. WL After conversion, the signal Vd LNA1 The wireless LAN signal in the downconverter 140B (eg, the mixers MB1 and MB2 therein) can be downconverted according to the frequency LO BT After conversion, the signal Vd LNA1 For example, the post-stage low noise amplifier 130A can amplify the converted signal Vd LNA1 The wireless LAN signal in the frequency LO is transmitted to the downconverter 140A through the AC coupling capacitors CA1 and CA2 to convert the wireless LAN signal carried on the frequency LO WL The wireless LAN signal is downconverted to the baseband frequency, and the subsequent low noise amplifier 130B can amplify the converted signal Vd LNA1 The amplified Bluetooth signal is transmitted to the downconverter 140B through the AC coupling capacitors CB1 and CB2 to convert the Bluetooth signal carried on the frequency LO BT The Bluetooth signal is down-converted to the baseband frequency. Figure 1 The illustrated architecture understands other operations in the wireless LAN receiving channel and the Bluetooth receiving channel (e.g., the operations of amplifiers 150A and 150B, low-pass filters 160A and 160B, analog-to-digital converters 170A and 170B, and digital circuits 180A and 180B), and for the sake of simplicity, the relevant details are not repeated here.

[0019] Figure 2 An electronic device (eg, comprising Figure 11 is a schematic diagram of a control scheme for receiving multiple types of signals (e.g., wireless LAN signals and Bluetooth signals) of an electronic device of the wireless communication device 10 shown in FIG. 1 . In this embodiment, the electronic device can use a driver running thereon, such as a packet transmission arbitration driver 200, to determine whether the function of the electronic device to receive wireless LAN signals or Bluetooth signals is enabled, and accordingly, the wireless LAN media access control (MAC) layer 210A (in Figure 2 The WLAN media access control (hereinafter referred to as “WLAN media access control”) and a Bluetooth modem (modulator-demodulator, modem) such as a Bluetooth modem 210B respectively control the configuration of the wireless LAN control circuit 220A and the Bluetooth control circuit 220B. In particular, the packet transmission arbitration driver 200 can control the wireless LAN control circuit 220A and the Bluetooth control circuit 220B according to the enabling state of the receiving function of either the wireless LAN signal or the Bluetooth signal to selectively enable the receiving function of the wireless LAN signal or the Bluetooth signal. Figure 1 An N-channel filter 100 is shown.

[0020] In some embodiments, the N-channel filter 100 is used to provide a frequency LO WL The bandpass filter effect of the center frequency (such as LO Npath =LO WL When the data packet transmission arbitration driver 200 determines that the function of receiving wireless LAN signals of the electronic device is enabled and the function of receiving Bluetooth signals is disabled, the N-channel filter 100 may be enabled to optimize Figure 1 When the packet transmission arbitration driver 200 determines that the functions of receiving wireless LAN signals and Bluetooth signals of the electronic device are both enabled, the N-channel filter 100 may be disabled to avoid Figure 1 The power of the Bluetooth signal received by the Bluetooth receiving channel of the embodiment is attenuated due to the N-channel filter 100 .

[0021] In some embodiments, the N-channel filter 100 is used to provide a frequency LO BT The bandpass filter effect of the center frequency (such as LO Npath =LO BT When the data packet transmission arbitration driver 200 determines that the function of receiving Bluetooth signals of the electronic device is enabled and the function of receiving wireless LAN signals is disabled, the N-channel filter 100 may be enabled to optimize Figure 1When the data packet transmission arbitration driver 200 determines that the functions of receiving Bluetooth signals and wireless LAN signals of the electronic device are both enabled, the N-channel filter 100 may be disabled to avoid Figure 1 The power of the wireless LAN signal received by the wireless LAN receiving channel of the embodiment is attenuated due to the N-channel filter 100 .

[0022] In some embodiments, the center frequency of the bandpass filtering effect provided by the N-channel filter 100 can be controlled by a switching circuit. For example, the switching circuit can be controlled from the frequency LO to the frequency LO according to the enabling state of the function of receiving Bluetooth signals and / or the function of receiving wireless LAN signals of the electronic device. WL and LO BT One of them is selected and provided to the mixers M3 and M4 to set the center frequency, but the present invention is not limited thereto.

[0023] Figure 3 According to one embodiment of the present invention, a method for transmitting data in a wireless communication device (eg Figure 1 Schematic diagram of the working process of a method for simultaneously receiving multiple types of signals (such as the above-mentioned wireless LAN signal and Bluetooth signal) in a wireless communication device 10 shown in FIG. Figure 3 The workflow shown is for illustrative purposes only and is not intended to limit the present invention. For example, one or more steps may be Figure 3 The workflow shown may be added, deleted, or modified. In addition, the steps do not necessarily need to be followed exactly to achieve the same result. Figure 3 Execute in the order shown.

[0024] In step S310, the wireless communication device may utilize the pre-stage low noise amplifier therein to amplify the initial signal received by the antenna to generate an input signal, wherein the initial signal includes the multiple types of signals, and the multiple types of signals include a first type of signal (such as the above-mentioned wireless LAN signal) and a second type of signal (such as the above-mentioned Bluetooth signal).

[0025] In step S320 , the wireless communication device may utilize the conversion circuit therein to perform a conversion operation on the input signal to generate a converted signal.

[0026] In step S330, the electronic device including the wireless communication device may utilize a driver program (eg, Figure 2The packet transmission arbitration driver 200 shown controls the configuration of the filter coupled to the conversion circuit according to the enable status of the function of receiving the first type of signal or the second type of signal (for example, the packet transmission arbitration driver 200 can control the wireless LAN control circuit 220A and / or the Bluetooth control circuit 220B to send at least one enable control signal to enable or disable the filter), wherein the filter is used to filter the converted signal to reduce the power of the signal other than the first type of signal and any of the second type of signal in the converted signal.

[0027] Figure 4 FIG. 4 is a schematic diagram of a wireless communication device 40 according to another embodiment of the present invention, wherein the wireless communication device 40 may be a receiver capable of simultaneously receiving multiple types of signals such as Bluetooth signals and wireless LAN signals. In some embodiments, the wireless communication device 40 may be a part of a transceiver (e.g., a receiver in the transceiver) capable of simultaneously receiving multiple types of signals (e.g., Bluetooth signals and wireless LAN signals), but the present invention is not limited thereto. Figure 4 As shown, the wireless communication device 40 may include an antenna 50, front-stage low noise amplifiers 110A and 110B (labeled as “LNA1” in the figure for simplicity), conversion circuits such as Balun converters 120A and 12B, rear-stage low noise amplifiers 130A and 130B, filters such as N-channel filters 100A and 100B, AC coupling capacitors CA1, CA2, CB1 and CB2, downconverters 140A and 140B, an amplifier 150A for amplifying wireless LAN signals (labeled as “WL AMP” in the figure for simplicity), an amplifier 150B for amplifying Bluetooth signals (labeled as “BT AMP” in the figure for simplicity), low-pass filters 160A and 160B, an analog-to-digital converter (ADC) 170A for performing analog-to-digital conversion on the wireless LAN signal (labeled as “WL AMP” in the figure) ADC” for simplicity), an analog-to-digital converter 170B for analog-to-digital conversion of Bluetooth signals (labeled “BT ADC” in the figure for simplicity), a digital circuit 180A for digital signal processing of wireless LAN signals (labeled “WL digital” in the figure for simplicity), and a digital circuit 180B for digital signal processing of Bluetooth signals (labeled “BT digital” in the figure for simplicity).

[0028] In this embodiment, the front-end low noise amplifier 110A is coupled to the antenna 50 and can be used to receive the initial signal V AIR Amplifies the input signal VA LNA1In addition, the front-stage low noise amplifier 110B is coupled to the antenna 50 and can be used to receive the initial signal V AIR Amplify to generate input signal VB LNA1 Since the initial signal V AIR The input signal VA may include multiple types of signals such as a first type of signal (eg, a wireless LAN signal) and a second type of signal (eg, a Bluetooth signal). LNA1 The first type of signal and the second type of signal may include the result of being amplified by the front-stage low noise amplifier 110A (which may be referred to as the input signal VA LNA1 Wireless LAN signal and Bluetooth signal in the , and input signal VB LNA1 The first type of signal and the second type of signal may include the result of being amplified by the front-stage low noise amplifier 110B (which may be referred to as the input signal VB LNA1 The balun converter 120A is coupled to the front-stage low noise amplifier 110A and can be used to convert the input signal VA LNA1 Perform a conversion operation (such as single-ended to differential signal conversion) to generate a converted signal VAd LNA1 The balun converter 120B is coupled to the front-stage low noise amplifier 110B and can be used to convert the input signal VB LNA1 The conversion operation (eg, single-ended to differential signal conversion) is performed to generate a converted signal VBd. LNA1 The N-channel filter 100A is coupled to the Balun converter 120A and is used to convert the converted signal VAd LNA1 The N-channel filter 100B is coupled to the Balun converter 120B and is used to filter the converted signal VBd. LNA1 Perform filtering (eg, bandpass filtering).

[0029] In this embodiment, any one of the N-channel filters 100A and 100B can be used as Figure 1 Specifically, the mixers MA3 and MA4 and the capacitor C in the N-channel filter 100A are WL,Npath The mixers M3 and M4 and the capacitor C in the N-channel filter 100 may be Npath For example, the frequency LO WL,Npath Can be frequency LO Npath In addition, the mixers MB3 and MB4 and the capacitor C in the N-channel filter 100B BT,Npath The mixers M3 and M4 and the capacitor C in the N-channel filter 100 may be Npath For example, the frequency LO BT,NpathCan be frequency LO Npath Therefore, the N-channel filter 100A can convert the converted signal VAd LNA1 Generates a frequency LO WL,Npath The N-channel filter 100B can filter the converted signal VBd by a bandpass filter having a center frequency. LNA1 Generates a frequency LO B,Npath In this embodiment, the wireless LAN signal is carried at the frequency LO WL The Bluetooth signal is carried on the frequency LO BT Therefore, when the frequency LO WL,Npath Set to LO WL The frequency LO BT,Npath is set to frequency LO BT When the N-channel filter 100A can reduce the converted signal VAd LNA1 The power of the signal other than the wireless LAN signal in the N-channel filter 100B can reduce the converted signal VBd LNA1 The power of signals other than Bluetooth signals.

[0030] In this embodiment, the post-stage low noise amplifier 130A, the AC coupling capacitors CA1 and CA2, the downconverter 140A, the amplifier 150A, the low pass filter 160A, the analog-to-digital converter 170B and the digital circuit 180A can form a wireless local area network receiving channel coupled to the Balun converter 120A and the N-channel filter 100A for processing the converted signal VAd. LNA1 In addition, the post-stage low noise amplifier 130B, the AC coupling capacitors CB1 and CB2, the downconverter 140B, the amplifier 150B, the low pass filter 160B, the analog-to-digital converter 170B and the digital circuit 180B can form a Bluetooth receiving channel coupled to the Balun converter 120B and the N-channel filter 100B for processing the converted signal VBd LNA1 Since the operation of the wireless LAN receiving channel and the Bluetooth receiving channel in the wireless communication device 40 is similar to Figure 1 The wireless LAN receiving channel and the Bluetooth receiving channel in the wireless communication device 10 are the same, and are not repeated here for the sake of simplicity.

[0031] Based on the above description, it can be known that in the architecture of the wireless communication device 40, the N-channel filter 100A can reduce the converted signal VAd received by the wireless local area network receiving channel (eg, the post-stage low noise amplifier 130A). LNA1 The power of the signal other than the wireless LAN signal in the Bluetooth receiving channel (such as the post-stage low noise amplifier 130B) is not affected.LNA1 Similarly, the N-channel filter 100B can reduce the converted signal VBd received by the Bluetooth receiving channel (eg, the post-stage low noise amplifier 130B). LNA1 The power of the signal other than the Bluetooth signal in the wireless local area network receiving channel (such as the post-stage low noise amplifier 130A) is not affected. LNA1 wireless LAN signal in.

[0032] Figure 5 FIG. 4 is a schematic diagram of a wireless communication device 40' according to another embodiment of the present invention, wherein the wireless communication device 40' may be a receiver capable of simultaneously receiving multiple types of signals such as Bluetooth signals and wireless LAN signals. In some embodiments, the wireless communication device 40' may be a part of a transceiver (e.g., a receiver in the transceiver) capable of simultaneously receiving multiple types of signals (e.g., Bluetooth signals and wireless LAN signals), but the present invention is not limited thereto. Figure 5 As shown, the wireless communication device 40' may include an antenna 50, a front-stage low noise amplifier 110, a rear-stage low noise amplifier 130A and 130B, a conversion circuit such as a Balun converter 120A and 12B, and a filter such as an N-channel filter 100A and 100B, wherein Figure 5 The connections and operations of other components in the wireless communication device 40' are similar to those shown in FIG. Figure 4 The wireless communication devices 40 shown are the same and will not be described again for the sake of brevity.

[0033] Compared to Figure 4 In the wireless communication device 40 shown in the figure, the wireless LAN receiving channel and the Bluetooth receiving channel of the wireless communication device 40' in this embodiment share a front-end low noise amplifier 110, and the operation of the rear-end low noise amplifiers 130A and 130B is before the single-ended to differential signal conversion. Specifically, the rear-end low noise amplifier 130A is coupled between the front-end low noise amplifier 110 and the Balun converter 120A, and the rear-end low noise amplifier 130B is coupled between the front-end low noise amplifier 110 and the Balun converter 120B. Figure 5 As shown, the front-stage low noise amplifier 110 can receive the initial signal V AIR Amplifies the input signal V LNA1 The post-stage low noise amplifier 130A can LNA1 Amplify (for example, amplify according to the requirement of receiving the wireless local area network signal) to further generate an input signal VA LNA2 , and the Balun converter 120A can be used to convert the input signal VA LNA2Perform a conversion operation (such as single-ended to differential signal conversion) to generate a converted signal VAd LNA2 The post-stage low noise amplifier 130B can LNA1 Amplify (for example, amplify according to the requirement of receiving the Bluetooth signal) to further generate the input signal VB LNA2 , and the Balun converter 120B can convert the input signal VB LNA2 Perform a conversion operation (such as single-ended to differential signal conversion) to generate a converted signal VBd LNA2 In this architecture, the converted signal VAd output by the Balun converter 120A is LNA2 can be transmitted to the AC coupling capacitors CA1 and CA2 for subsequent processing, and the converted signal VBd output by the Balun converter 120B LNA2 can be sent to the AC coupling capacitors CB1 and CB2 for subsequent processing. Apart from the above differences, the rest of the operation details are the same as Figure 4 The embodiments are similar and will not be repeated here for the sake of brevity.

[0034] Figure 6 According to another embodiment of the present invention, a method for transmitting data in a wireless communication device (eg Figure 4 The wireless communication device 40 or Figure 5 The wireless communication device 40' shown in FIG. 4 is a schematic diagram of the working process of a method for simultaneously receiving multiple types of signals (such as the wireless LAN signal and the Bluetooth signal mentioned above). It should be noted that Figure 6 The workflow shown is for illustrative purposes only and is not intended to limit the present invention. For example, one or more steps may be Figure 6 The workflow shown may be added, deleted, or modified. In addition, the steps do not necessarily need to be followed exactly to achieve the same result. Figure 6 Execute in the order shown.

[0035] In step S610, the wireless communication device may utilize at least one pre-stage low noise amplifier therein to amplify the initial signal received by the antenna to generate at least one input signal, wherein the initial signal includes the multiple types of signals, and the multiple types of signals include a first type of signal (e.g., a wireless LAN signal) and a second type of signal (e.g., a Bluetooth signal).

[0036] In step S620 , the wireless communication device may utilize a first conversion circuit therein to perform a conversion operation according to the at least one input signal to generate a first converted signal.

[0037] In step S630 , the wireless communication device may utilize the second conversion circuit therein to perform the conversion operation according to the at least one input signal to generate a second converted signal.

[0038] In step S640, the wireless communication device may utilize the first filter therein to filter the first converted signal to reduce the power of signals other than the first type of signals in the first converted signal, so that the first receiving channel coupled to the first filter can process the first type of signals in the first converted signal.

[0039] In step S650, the wireless communication device may utilize the second filter therein to filter the second converted signal to reduce the power of signals other than the second type of signals in the second converted signal, so that the second receiving channel coupled to the second filter can process the second type of signals in the second converted signal.

[0040] In summary, the wireless communication device and the related method provided by the embodiments of the present invention can determine the configuration of the N-channel filter (e.g., turn on or off the N-channel filter) in response to the respective enabled states of the functions of receiving various types of signals, so as to prevent the received wireless LAN signal or Bluetooth signal from being filtered out. In addition, the present invention can process the wireless LAN signal and the Bluetooth signal respectively with separate channels after the signal is converted from single-ended to differential, so that the wireless LAN signal and the Bluetooth signal can be respectively improved in signal quality by means of the N-channel filter with corresponding configuration (e.g., bandpass filter configuration with corresponding center frequency) without interfering with each other.

[0041] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made according to the patent claims of the present invention should fall within the protection scope of the present invention.

[0042] Description of Reference Numerals

[0043] 10,40,40': Wireless communication device

[0044] 50: Antenna

[0045] 100,100A,100B:N-channel filter

[0046] 110,110A,110B: Pre-stage low noise amplifier

[0047] 120,120A,120B: Balun

[0048] 130A, 130B: Post-stage low noise amplifier

[0049] 140A,140B: frequency converter

[0050] 150A,150B:Amplifier

[0051] 160A,160B: Low pass filter

[0052] 170A, 170B: Analog-to-digital converter

[0053] 180A, 180B: Digital Circuits

[0054] CA1, CA2, CB1, CB2: AC coupling capacitors

[0055] MA1,MA2,MB1,MB2,M3,M4,MA3,MA4,MB3,MB4:Mixer

[0056] C Npath ,C WL,Npath ,C BT,Npath :Capacitor

[0057] LO WL ,LO BT ,LO Npath ,LO WL,Npath ,LO BT,Npath :frequency

[0058] V AIR : Initial signal

[0059] V LNA1 ,VA LNA1 ,VB LNA1 ,VA LNA2 ,VB LNA2 :Input signal

[0060] Vd LNA1 ,VAd LNA1 ,VBd LNA1 ,VAd LNA2 ,VBd LNA2 :Converted signal

[0061] 200: Packet transmission arbitration driver

[0062] 210A: Wireless LAN Media Access Control Layer

[0063] 210B:Bluetooth Modem

[0064] 220A: Wireless LAN control circuit

[0065] 220B: Bluetooth control circuit

[0066] S310-S330, S510-S560: Steps

Claims

1. A wireless communication device for simultaneously receiving multiple types of signals, comprising: at least one front-stage low noise amplifier, coupled to the antenna, for amplifying an initial signal received by the antenna to generate at least one input signal, wherein the initial signal includes the plurality of types of signals, and the plurality of types of signals include a first type of signal and a second type of signal; A first conversion circuit, configured to perform a conversion operation according to the at least one input signal to generate a first converted signal; A second conversion circuit, configured to perform the conversion operation according to the at least one input signal to generate a second converted signal; a first filter, coupled to the first conversion circuit, for filtering the first converted signal to reduce power of signals other than the first type of signals in the first converted signal, so that a first receiving channel coupled to the first filter can process the first type of signals in the first converted signal; as well as A second filter is coupled to the second conversion circuit, and is used for filtering the second converted signal to reduce the power of signals other than the second type of signals in the second converted signal, so that a second receiving channel coupled to the second filter can process the second type of signals in the second converted signal.

2. The wireless communication device of claim 1, wherein the conversion operation is a single-ended to differential signal conversion. 3 . The wireless communication device according to claim 1 , wherein the first filter and the second filter are a first N-channel filter and a second N-channel filter, respectively.

4. The wireless communication device according to claim 3, wherein the first N-channel filter is used to perform bandpass filtering on the first converted signal with a first frequency as a center frequency, and the second N-channel filter is used to perform bandpass filtering on the second converted signal with a second frequency as a center frequency.

5. The wireless communication device of claim 4, wherein each of the first N-channel filter and the second N-channel filter comprises: at least one mixer; and a capacitor coupled to the at least one mixer; The at least one mixer in the first N-channel filter drives the capacitor in the first N-channel filter according to the first frequency, and the at least one mixer in the second N-channel filter drives the capacitor in the second N-channel filter according to the second frequency. 6 . The wireless communication device of claim 5 , wherein the at least one mixer comprises a first mixer and a second mixer, and the capacitor is coupled between the first mixer and the second mixer.

7. The wireless communication device according to claim 1, wherein the at least one front-stage low noise amplifier comprises: a first front-stage low noise amplifier, coupled between the antenna and the first conversion circuit, for amplifying the initial signal to generate a first input signal among the at least one input signal, so that the first conversion circuit can perform the conversion operation on the first input signal to generate the first converted signal; The second front-stage low noise amplifier is coupled between the antenna and the second conversion circuit, and is used to amplify the initial signal to generate a second input signal in the at least one input signal, so that the second conversion circuit can perform the conversion operation on the second input signal to generate the second converted signal.

8. The wireless communication device according to claim 1, further comprising: a first post-stage low noise amplifier, coupled between the at least one pre-stage low noise amplifier and the first conversion circuit, for amplifying the at least one input signal to generate a first input signal, so that the first conversion circuit performs the conversion operation on the first input signal to generate the first converted signal; The second front-stage low-noise amplifier is coupled between the at least one front-stage low-noise amplifier and the second conversion circuit, and is used to amplify the at least one input signal to generate a second input signal, so that the second conversion circuit can perform the conversion operation on the second input signal to generate the second converted signal.

9. A method for simultaneously receiving multiple types of signals in a wireless communication device, comprising: Amplifying an initial signal received by an antenna using at least one front-stage low noise amplifier of the wireless communication device to generate at least one input signal, wherein the initial signal includes the multiple types of signals, and the multiple types of signals include a first type of signal and a second type of signal; Utilizing the first conversion circuit of the wireless communication device to perform a conversion operation according to the at least one input signal to generate a first converted signal; Utilizing a second conversion circuit of the wireless communication device to perform the conversion operation according to the at least one input signal to generate a second converted signal; Filtering the first converted signal by using a first filter of the wireless communication device to reduce power of signals other than the first type of signals in the first converted signal, so that a first receiving channel coupled to the first filter can process the first type of signals in the first converted signal; as well as The second converted signal is filtered by a second filter of the wireless communication device to reduce the power of signals other than the second type of signals in the second converted signal, so that a second receiving channel coupled to the second filter can process the second type of signals in the second converted signal.

10. A method for simultaneously receiving multiple types of signals in a wireless communication device, comprising: Amplifying an initial signal received by an antenna using a front-stage low-noise amplifier of the wireless communication device to generate an input signal, wherein the initial signal includes the multiple types of signals, and the multiple types of signals include a first type of signal and a second type of signal; Using the conversion circuit of the wireless communication device to convert the input signal to generate a converted signal; and The configuration of the filter coupled to the conversion circuit is controlled according to the enable state of the function of receiving the first type of signal or the second type of signal, wherein the filter is used to filter the converted signal to reduce the power of the signal other than the first type of signal and any one of the second type of signal in the converted signal.

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