Communication device

Abstract

A communication device is provided. The first signal path is electrically coupled to the signal common processing circuit. The change-over switch enables the second signal path and the signal common processing circuit to be electrically coupled when the communication state is combined. The first signal amplification circuit is electrically coupled between the signal common processing circuit and the first antenna. The first signal transceiving circuit is configured to perform communication in a first frequency band through the first signal path, the signal common processing circuit, the first signal amplifying circuit and the first antenna. The second signal transmit-receive circuit is configured to perform communication in a second frequency band through the second signal path, the change-over switch, the signal common processing circuit, the first signal amplification circuit and the first antenna in a combined communication state.

Description

Technical Field

[0001] The present invention relates to communication technology, and in particular to a communication device. Background Art

[0002] With the rapid development of wireless communication, users' requirements for data transmission bandwidth of wireless products are increasing day by day. In response to this trend, various wireless communication protocols will increase the transmission bandwidth and the number of uplink and downlink data streams. For example, the carrier aggregation technology (CA) in Long Term Evolution (LTE) and the multi-input multi-output (MIMO) system of WiFi are representatives.

[0003] However, the additional uplink and downlink data streams are inevitably accompanied by additional transceiver circuit power consumption. For handheld devices, network bandwidth and battery power have become an inevitable trade-off. Summary of the invention

[0004] In view of the problems of the prior art, an object of the present invention is to provide a communication device to improve the prior art.

[0005] The present invention includes a communication device, including: a first antenna, a signal common processing circuit, a first signal amplifying circuit, a first signal path, a second signal path, a switching switch, a first signal transceiver circuit and a second signal transceiver circuit. The first signal path is electrically coupled to the signal common processing circuit. The switching switch electrically couples the second signal path and the signal common processing circuit when the communication state is combined. The first signal amplifying circuit is electrically coupled between the signal common processing circuit and the first antenna. The first signal transceiver circuit is configured to communicate in a first frequency band through the first signal path, the signal common processing circuit, the first signal amplifying circuit and the first antenna. The second signal transceiver circuit is configured to communicate in a second frequency band through the second signal path, the switching switch, the signal common processing circuit, the first signal amplifying circuit and the first antenna when the communication state is combined.

[0006] The features, practical operations and effects of the present application are described in detail below with reference to the drawings as preferred embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 A block diagram showing a communication device according to an embodiment of the present invention;

[0008] Figure 2 A block diagram showing a communication device according to an embodiment of the present invention;

[0009] Figure 3 A block diagram showing a communication device according to an embodiment of the present invention;

[0010] Figure 4 A block diagram showing a communication device according to an embodiment of the present invention;

[0011] Figure 5 A block diagram showing a communication device according to an embodiment of the present invention; and

[0012] Figure 6 A block diagram of a communication device according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0013] An object of the present invention is to provide a communication device, by arranging a signal amplification circuit before an antenna, so that when transmitting a signal, amplification is performed after a small signal is switched and combined, thereby reducing power loss, and when receiving a signal, amplification is performed before switching and combining, thereby not affecting the minimum sensitivity of signal reception.

[0014] Please refer to Figure 1 . Figure 1 The block diagram of a communication device 100 according to an embodiment of the present invention is shown. The communication device 100 includes: a first antenna 105A, a signal common processing circuit 110, a first signal amplifying circuit 120A, a first signal path 130A, a second signal path 130B, a switch 140, a first signal transceiver circuit 150A, a second signal transceiver circuit 150B, a conversion circuit 160, and a baseband circuit 170.

[0015] The following will first describe the connection relationship of the various components of the communication device 100 .

[0016] The first signal amplifying circuit 120A is electrically coupled between the first antenna 105A and the signal common processing circuit 110. In this embodiment, the first signal amplifying circuit 120A is a power amplifier (PA), and the signal common processing circuit 110 is a power combiner.

[0017] In this embodiment, the first signal path 130A is a first signal transmission path and is electrically coupled to the signal common processing circuit 110. In one embodiment, the first signal path 130A may not include any circuit elements, or may include circuit elements that do not affect the function of the communication device 100. The present invention is not limited thereto.

[0018] In this embodiment, the second signal path 130B is a second signal transmission path. In one embodiment, the second signal path 130B may not include any circuit elements, or may include circuit elements that do not affect the function of the communication device 100. The present invention is not limited thereto.

[0019] The switch 140 is configured to operate in a combined communication state and a non-combined communication state. In this embodiment, the switch 140 electrically couples the second signal path 130B and the signal common processing circuit 110 in the combined communication state, and floats the second signal path 130B in the non-combined communication state.

[0020] The first signal transceiver circuit 150A is configured to communicate with another communication device (not shown) in a first frequency band through the first signal path 130A, the signal common processing circuit 110, the first signal amplification circuit 120A and the first antenna 105A. In this embodiment, the first signal transceiver circuit 150A transmits signals through the above components via an internal signal transmission circuit (transmitter; TX, not shown).

[0021] The second signal transceiver circuit 150B is configured to communicate with another communication device in the second frequency band through the second signal path 130B, the switch 140, the signal common processing circuit 110, the first signal amplification circuit 120A and the first antenna 105A when in the combined communication state. In this embodiment, the second signal transceiver circuit 150B transmits signals through the above components via an internal signal transmission circuit (not shown).

[0022] The baseband circuit 170 is electrically coupled to the first signal transceiver circuit 150A and the second signal transceiver circuit 150B through the conversion circuit 160 .

[0023] Next, the operation of each element of the communication device 100 will be described.

[0024] In operation, the baseband circuit 170 provides the first digital signal DT1 to the conversion circuit 160 for digital-to-analog conversion to generate the first analog signal AT1, which is then transmitted to the first signal transceiver circuit 150A. The first signal transceiver circuit 150A is configured to perform up-conversion or other signal processing on the first analog signal AT1, and then transmit the first analog signal AU1 corresponding to the first frequency band to the signal common processing circuit 110 through the first signal path 130A which is the first signal transmission path.

[0025] On the other hand, the baseband circuit 170 provides the second digital signal DT2 to the conversion circuit 160 for digital-to-analog conversion to generate the second analog signal AT2, which is then transmitted to the second signal transceiver circuit 150B. The second signal transceiver circuit 150B is configured to perform up-conversion or other signal processing on the second analog signal AT2, and then transmit the second analog signal AU2 corresponding to the second frequency band to the signal common processing circuit 110 through the second signal path 130B which is the second signal transmission path.

[0026] In one embodiment, the conversion circuit 160 may perform digital-to-analog conversion via an internal digital-to-analog conversion circuit (not shown).

[0027] In one embodiment, the first signal transceiver circuit 150A and the second signal transceiver circuit 150B do not perform any power amplification processing on the first analog signal AT1 and the second analog signal AT2 .

[0028] The signal common processing circuit 110 implemented as a power combiner combines the first analog signal AU1 and the second analog signal AU2 into a transmission signal TS. Since the first analog signal AU1 and the second analog signal AU2 belong to the first frequency band and the second frequency band respectively, they will not interfere with each other in the combined transmission signal TS.

[0029] The first signal amplifier circuit 120A further amplifies the transmission signal TS, and the amplified transmission signal TA is transmitted by the first antenna 105A.

[0030] Figure 1 , the corresponding frequency spectra are shown next to the markings of the first analog signal AU1, the second analog signal AU2 and the transmission signal TA, respectively, wherein the horizontal axis is the frequency and the vertical axis is the intensity. The first analog signal AU1 is centered at the frequency F1, and the second analog signal AU2 is centered at the frequency F2. In one embodiment, the first frequency band and the second frequency band each have a bandwidth of 80 MHz to form an equivalent bandwidth of 160 MHz. Therefore, the frequency F2 will differ from the frequency F1 by 80 MHz.

[0031] In one embodiment, since the switch 140 makes the second signal path 130B float when in the non-combined communication state, the second signal transceiver circuit 150B may not communicate when the switch 140 operates in the non-combined communication state.

[0032] In some technologies, different signal transceiver circuits are each equipped with a power amplifier circuit to amplify the signal before combining it for transmission. First, the power amplifier circuit itself consumes a lot of power when converting a small signal into a large signal. Furthermore, in order to meet the requirements of spectrum regulations, an additional filter is required after the power amplifier circuit to suppress out-of-band radiation, so that the power amplifier circuit must output a higher power to compensate for the insertion loss caused by the external filter. Furthermore, considering the transmitter's requirements for linearity and material characteristics, the maximum conversion efficiency of the power amplifier circuit is about 35%, which means that it takes nearly three times the DC power to provide the required RF transmission power. These factors make the entire transmission link one of the main power-consuming parts in the communication system.

[0033] When the communication device 100 of the present invention transmits a signal, the switch 140 and the signal common processing circuit 110 switch and combine the small signals (i.e., the first analog signal AU1 and the second analog signal AU2) generated by the first signal transceiver circuit 150A and the second signal transceiver circuit 150B, and then the first signal amplifying circuit 120A amplifies the combined transmission signal TS. The difficulty of implementing the circuit for switching and combining different signals is thus reduced.

[0034] Even if the signals face the same loss when switching and combining, the DC power consumption wasted for large and small signals with the same proportion of loss is of completely different orders of magnitude. For example, for a 1 milliwatt (mW) and 100 milliwatt signal, the difference in wasted DC power consumption can be seen when the transmission power is lost by 30%. Therefore, from the perspective of energy saving, it will be better to switch and combine the signals before the power amplifier and then amplify and transmit them, which will result in better power saving.

[0035] And, the signal is divided into several parts (for example Figure 1 The embodiment of the present invention is two parts) and the small signal is combined before inputting into the power amplifier, which does not significantly increase the power consumption of the overall transceiver circuit. The conversion circuit 160 as an analog front end and the baseband circuit 170 as a digital circuit can operate at a lower frequency, so that the complexity of the digital circuit can be further reduced. Since the complexity of the communication circuit and the required chip area and the operating bandwidth are not necessarily linearly related but may be exponentially related, the power consumption saved by the communication device 100 of the present invention can provide chip designers with more design flexibility in chip energy consumption ratio.

[0036] Please refer to Figure 2 . Figure 2The block diagram of a communication device 200 according to an embodiment of the present invention is shown. The communication device 200 includes: a first antenna 105A, a signal common processing circuit 210, a first signal amplifying circuit 220A, a first signal path 230A, a second signal path 230B, a switch 240, a first signal transceiver circuit 150A, a second signal transceiver circuit 150B, a conversion circuit 160, and a baseband circuit 170.

[0037] The following will first describe the connection relationship of the various components of the communication device 200 .

[0038] The first signal amplifying circuit 220A is electrically coupled between the first antenna 105A and the signal common processing circuit 210. In this embodiment, the first signal amplifying circuit 220A is a low noise amplifier (LNA), and the signal common processing circuit 210 is a power splitter.

[0039] In this embodiment, the first signal path 230A is a first signal receiving path and is electrically coupled to the signal common processing circuit 210. In one embodiment, the first signal path 230A may not include any circuit elements, or may include circuit elements that do not affect the function of the communication device 200. The present invention is not limited thereto.

[0040] In this embodiment, the second signal path 230B is a second signal receiving path. In one embodiment, the second signal path 230B may not include any circuit elements, or may include circuit elements that do not affect the function of the communication device 200. The present invention is not limited thereto.

[0041] The switch 240 is configured to operate in a combined communication state and a non-combined communication state. In this embodiment, the switch 240 electrically couples the second signal path 230B and the signal common processing circuit 210 in the combined communication state, and floats the second signal path 230B in the non-combined communication state.

[0042] The first signal transceiver circuit 150A is configured to communicate with another communication device (not shown) in a first frequency band through the first signal path 230A, the signal common processing circuit 210, the first signal amplification circuit 220A and the first antenna 105A. In this embodiment, the first signal transceiver circuit 150A receives signals through the above components via an internal signal receiving circuit (receiver; RX, not shown).

[0043] The second signal transceiver circuit 150B is configured to communicate with another communication device in the second frequency band through the second signal path 130B, the switch 240, the signal common processing circuit 210, the first signal amplification circuit 220A and the first antenna 105A when in the combined communication state. In this embodiment, the second signal transceiver circuit 150B receives signals through the above components via an internal signal receiving circuit (not shown).

[0044] The baseband circuit 170 is electrically coupled to the first signal transceiver circuit 150A and the second signal transceiver circuit 150B through the conversion circuit 160 .

[0045] Next, the operation of each element of the communication device 200 will be described.

[0046] In operation, the first antenna 105A receives the signal RS and then amplifies it through the first signal amplification circuit 220A. The amplified received signal RA is split into a first analog signal AR1 corresponding to the first frequency band and a second analog signal AR2 corresponding to the second frequency band by the signal common processing circuit 210 implemented by a power splitter. Since the first analog signal AR1 and the second analog signal AR2 belong to the first frequency band and the second frequency band respectively, they will not interfere with each other in the combined received signal RA. In one embodiment, the first frequency band and the second frequency band each have a bandwidth of 80 MHz to form an equivalent bandwidth of 160 MHz.

[0047] The first signal transceiver circuit 150A receives the first analog signal AR1 through the first signal path 230A, and is configured to down-convert or perform other signal processing on the first analog signal AR1 to transmit the processed first analog signal AD1 to the conversion circuit 160 .

[0048] The second signal transceiver circuit 150B receives the second analog signal AR2 through the second signal path 230B, and is configured to down-convert or perform other signal processing on the second analog signal AR2 to transmit the processed second analog signal AD2 to the conversion circuit 160 .

[0049] In one embodiment, the first signal transceiver circuit 150A and the second signal transceiver circuit 150B do not perform any power amplification processing on the first analog signal AR1 and the second analog signal AR2 .

[0050] The baseband circuit 170 receives the first digital signal DR1 from the conversion circuit 160 after the conversion circuit 160 receives the first analog signal AD1 and performs analog-to-digital conversion to generate the first digital signal DR1, and receives the second digital signal DR2 from the conversion circuit 160 after the conversion circuit 160 receives the second analog signal AD2 and performs analog-to-digital conversion to generate the second digital signal DR2.

[0051] In one embodiment, the conversion circuit 160 may perform analog-to-digital conversion via an internal analog-to-digital conversion circuit (not shown).

[0052] In one embodiment, since the switch 240 floats the second signal path 230B in the non-combined communication state, the second signal transceiver circuit 150B may not communicate when the switch 240 operates in the non-combined communication state.

[0053] In some technologies, different signal transceiver circuits are each equipped with a low noise amplifier circuit to amplify the received signal after splitting it. The power combiner and the RF switch will cause additional component power loss and reduce the minimum sensitivity of the receiver.

[0054] When the communication device 200 of the present invention receives a signal, the signal is directly received from the first antenna 105A and then enters the first signal amplification circuit 220A which is a low noise amplifier, thereby avoiding the influence of the external switch and power combiner on the noise figure (NF) of the receiving path. In the case of using only one low noise amplifier, in theory, the receiver will not cause loss of the individual minimum sensitivity of the two different frequency signals. The receiving system does not need to make a trade-off between the shared antenna and the minimum sensitivity, and can save the power consumption of the low noise amplifier.

[0055] Please refer to Figure 3 . Figure 3 A block diagram of a communication device 300 according to an embodiment of the present invention is shown.

[0056] The components of the communication device 300 are Figure 1 The components of the communication device 100 and Figure 2 The union of elements of the communication device 200 includes: a first antenna 105A, a signal common processing circuit 110, a signal common processing circuit 210, a first signal amplifying circuit 120A, a first signal amplifying circuit 220A, a first signal path 130A, a first signal path 230A, a second signal path 130B, a second signal path 230B, a switching switch 140, a switching switch 240, a first signal transceiver circuit 150A, a second signal transceiver circuit 150B, a conversion circuit 160 and a baseband circuit 170.

[0057] The connection relationship between the above components is Figure 1 The communication device 100 and Figure 2 The communication device 300 can be connected in accordance with the same connection relationship as that shown in the communication device 200. Figure 1 The communication device 100 and Figure 2The communication device 200 operates in the manner described above to transmit and receive signals.

[0058] In this embodiment, the communication device 300 further includes a transceiver switch 310 disposed between the first signal amplifying circuit 120A, the first antenna 105A and the first signal amplifying circuit 220A.

[0059] When the transceiver switch 310 is in the transmitting state, the first signal amplifying circuit 120A is electrically coupled to the first antenna 105A. When the transceiver switch 310 is in the receiving state, the first signal amplifying circuit 220A is electrically coupled to the first antenna 105A. Therefore, the communication device 300 can perform signal transmission and signal reception through the same first antenna 105A through the operation of the transceiver switch 310.

[0060] In different embodiments, the first signal amplifying circuit 120A and the first signal amplifying circuit 220A are not necessarily connected to the antenna through the transceiver switch 310, but may be different depending on actual needs. The following will describe possible connection methods using two embodiments.

[0061] Please refer to Figure 4 . Figure 4 A block diagram of a communication device 400 in an embodiment of the present invention is shown. The components included in the communication device 400 are similar to those in the communication device 300, so the structure and operation of the same components are not described in detail. The difference from the communication device 300 is that the communication device 400 does not include the transceiver switch 310. In addition, the communication device 400 also includes a first antenna 410.

[0062] The first signal amplifier circuit 120A is directly electrically coupled to the first antenna 105A, and the first antenna 105A only provides the first signal amplifier circuit 120A with signal transmission. The first signal amplifier circuit 220A is directly electrically coupled to the first antenna 410, and the first antenna 410 only provides the first signal amplifier circuit 220A with signal reception.

[0063] With such a configuration, the first signal amplifying circuit 120A and the first signal amplifying circuit 220A can respectively transmit and receive signals simultaneously through the first antenna 105A and the first antenna 410 without any frequency limitation.

[0064] Please refer to Figure 5 . Figure 5A block diagram of a communication device 500 in an embodiment of the present invention is shown. The components included in the communication device 500 are similar to those of the communication device 300, so the structure and operation of the same components are not described in detail. The difference from the communication device 300 is that the communication device 500 does not include a transceiver switch 310, but includes a duplexer 510 that allows bidirectional transmission. The duplexer 510 is a type that operates in the frequency domain rather than a transceiver switch, and can be applied in the field of mobile phone Long Term Evolution (LTE) technology.

[0065] The duplexer 510 replaces the transceiver switch 310 and is disposed between the first signal amplifying circuit 120A, the first antenna 105A and the first signal amplifying circuit 220A, so that the first signal amplifying circuit 120A and the first signal amplifying circuit 220A can simultaneously transmit and receive signals of different frequencies through the first antenna 105A.

[0066] Please refer to Figure 6 . Figure 6 A block diagram of a communication device 600 in an embodiment of the present invention is shown. The communication device 600 actually includes the same components as the communication device 300, and the structure and operation of these components will not be repeated. The difference from the communication device 300 is that the communication device 600 further includes a second antenna 105B, a second signal amplifying circuit 120B, a second signal amplifying circuit 220B, and a transceiver switch 610.

[0067] The second signal amplifying circuit 120B and the second signal amplifying circuit 220B can be electrically coupled between the second signal transceiver circuit 150B and the second antenna 105B through the operation of the transceiver switch 610 .

[0068] In more detail, the transceiver switch 610 is disposed between the second signal amplifying circuit 120B, the second antenna 105B and the second signal amplifying circuit 220B. When the transceiver switch 610 is in the transmitting state, the second signal amplifying circuit 120B is electrically coupled to the second antenna 105B. When the switching switch 140 is in the non-merged communication state, the second signal path 130B and the second signal amplifying circuit 120B are electrically coupled.

[0069] Through the above operation, the second signal transceiver circuit 150B is configured to communicate in the second frequency band through the second signal path 130B, the second signal amplification circuit 120B and the second antenna 105B in the non-combined communication state.

[0070] In more detail, after the baseband circuit 170 provides the digital signal DAS to the conversion circuit 160 for conversion into the analog signal AA1, the second signal transceiver circuit 150B can transmit the analog signal AA2 after up-conversion and other processing through the second signal path 130B, amplified by the second signal amplifier circuit 120B, and the amplified analog signal AA3 is transmitted by the second antenna 105B.

[0071] On the other hand, when the transceiver switch 610 is in the receiving state, the second signal amplifying circuit 220B is electrically coupled to the second antenna 105B. When the switch 240 is in the non-combined communication state, the second signal path 230B and the second signal amplifying circuit 220B are electrically coupled.

[0072] Through the above operation, the second signal transceiver circuit 150B is configured to communicate in the second frequency band via the second signal path 230B, the second signal amplification circuit 220B and the second antenna 105B in the non-combined communication state.

[0073] In more detail, after the second antenna 105B receives the analog signal AB1 and amplifies it into the second analog signal AB2 via the second signal amplification circuit 220B, the second signal transceiver circuit 150B receives the second analog signal AB2 via the second signal path 230B and performs frequency reduction and other processing to generate the second analog signal AB3, which is converted into the digital signal DBS via the conversion circuit 160 and received by the baseband circuit 170.

[0074] Therefore, the communication device 600 can operate the transceiver switch 610 to allow the second signal amplifying circuit 120B and the second signal amplifying circuit 220B to transmit and receive signals in a non-combined communication state through the same second antenna 105B.

[0075] In one embodiment, the transceiver switch 310 and the transceiver switch 610 of the communication device 600 may be Figure 4 More specifically, the transceiver switch 310 may be replaced by directly connecting the first signal amplifying circuit 120A and the first signal amplifying circuit 220A to different antennas, and the transceiver switch 610 may be replaced by directly connecting the first signal amplifying circuit 120B and the first signal amplifying circuit 220B to different antennas.

[0076] In another embodiment, the transceiver switch 310 and the transceiver switch 610 of the communication device 600 may be Figure 5 In more detail, the transceiver switch 310 may be replaced by a duplexer, and the transceiver switch 610 may be replaced by another duplexer.

[0077] It should be noted that the above implementation is only an example. In other embodiments, those skilled in the art may make changes without violating the spirit of the present invention.

[0078] by Figure 1 For example, the first signal transceiver circuit 150A and the first signal path 130A form a first channel, and the second signal transceiver circuit 150B, the switch 140 and the second signal path 130B form a second channel. The number of the second channels can be N and all are electrically coupled to the signal common processing circuit 110, where N is a positive integer greater than or equal to 1.

[0079] by Figure 2 For example, the first signal transceiver circuit 150A and the first signal path 230A form a first channel, and the second signal transceiver circuit 150B, the switch 240 and the second signal path 230B form a second channel. The number of the second channels can be N and all are electrically coupled to the signal common processing circuit 210, where N is a positive integer greater than or equal to 1.

[0080] And for Figure 3 In particular, the first signal transceiver circuit 150A, the first signal path 130A and the first signal path 230A form a first channel, and the second signal transceiver circuit 150B, the switch 140, the second signal path 130B, the switch 240 and the second signal path 230B form a second channel. The number of the second channels can be N and they are electrically coupled to the signal common processing circuit 110 and the signal common processing circuit 210, respectively, where N is a positive integer greater than or equal to 1.

[0081] Through the above configuration, the signals of the second channels can be processed together with the signals of the first channel to perform signal transmission and signal reception.

[0082] In summary, the communication device of the present invention arranges the signal amplification circuit before the antenna so that when transmitting a signal, amplification is performed after the small signal is switched and combined, thereby reducing power loss. When receiving a signal, amplification is performed before switching and combining, thereby not affecting the minimum sensitivity of signal reception.

[0083] Although the embodiments of the present application are described above, these embodiments are not intended to limit the present application. Those with ordinary knowledge in the technical field may make changes to the technical features of the present application based on the explicit or implicit contents of the present application. All these changes may fall within the scope of patent protection sought by the present application. In other words, the scope of patent protection of the present application shall be subject to the scope of the patent application defined in this specification.

[0084]

Explanation of symbols

[0085] 100:Communication device

[0086] 105A: First antenna

[0087] 105B: Second Antenna

[0088] 110: signal common processing circuit

[0089] 120A: First signal amplification circuit

[0090] 120B: Second signal amplification circuit

[0091] 130A: First signal path

[0092] 130B: Second signal path

[0093] 140: Toggle switch

[0094] 150A: first signal transceiver circuit

[0095] 150B: Second signal transceiver circuit

[0096] 160:Conversion circuit

[0097] 170: Baseband circuit

[0098] 200:Communication device

[0099] 210: signal common processing circuit

[0100] 220A: first signal amplification circuit

[0101] 220B: Second signal amplification circuit

[0102] 230A: First signal path

[0103] 230B: Second signal path

[0104] 240: Toggle switch

[0105] 300: Communication device

[0106] 310: Transceiver switch

[0107] 400: Communication device

[0108] 410: First antenna

[0109] 500: Communication device

[0110] 510: Duplexer

[0111] 600: Communication device

[0112] 610: Transceiver switch

[0113] AA1~AA3、AB1~AB3: Analog signal

[0114] AD1, AR1, AT1, AU1: first analog signal

[0115] AD2, AR2, AT2, AU2: Second analog signal

[0116] DAS, DBS: Digital Signal

[0117] DR1, DT1: first digital signal

[0118] DR2, DT2: Second digital signal

[0119] RA, RS: receiving signal

[0120] TA, TS: transmit signal.

Claims

1. A communication device, comprising: a first antenna; a signal common processing circuit; a first signal amplifying circuit electrically coupled between the signal common processing circuit and the first antenna; a first signal path electrically coupled to the signal common processing circuit; a second signal path; a switching switch for electrically coupling the second signal path and the signal common processing circuit in a combined communication state; a first signal transceiver circuit configured to communicate in a first frequency band through the first signal path, the signal common processing circuit, the first signal amplification circuit, and the first antenna; as well as A second signal transceiver circuit is configured to communicate in a second frequency band through the second signal path, the switch, the signal common processing circuit, the first signal amplification circuit and the first antenna in the combined communication state.

2. The communication device according to claim 1, wherein: The first signal path is a first signal transmission path, the second signal path is a second signal transmission path, the first signal amplification circuit is a power amplifier, and the signal common processing circuit is a power combiner; The first signal transceiver circuit transmits a first analog signal corresponding to the first frequency band through the first signal path, and the second signal transceiver circuit transmits a second analog signal corresponding to the second frequency band through the second signal path. The first analog signal and the second analog signal are then combined into a transmission signal by the power combiner, amplified by the first signal amplification circuit, and transmitted by the first antenna.

3. The communication device according to claim 2, further comprising: a conversion circuit; and A baseband circuit is electrically coupled to the first signal transceiver circuit and the second signal transceiver circuit through the conversion circuit to provide a first digital signal to the conversion circuit for performing a digital-to-analog conversion to generate the first analog signal which is then transmitted to the first signal transceiver circuit, and to provide a second digital signal to the conversion circuit for performing a digital-to-analog conversion to generate the second analog signal which is then transmitted to the second signal transceiver circuit.

4. The communication device according to claim 2, further comprising: A transceiver switch is disposed between the first signal amplifying circuit and the first antenna, and is configured to electrically couple the first signal amplifying circuit to the first antenna when in a transmitting state, and to electrically isolate the first signal amplifying circuit from the first antenna when in a receiving state.

5. The communication device according to claim 2, wherein: The first signal amplifying circuit is directly electrically coupled to the first antenna, and the first antenna only provides the first signal amplifying circuit with signal transmission.

6. The communication device according to claim 2, further comprising: A duplexer is electrically coupled between the first signal amplifying circuit and the first antenna, so that the first antenna can simultaneously transmit and receive signals of different frequencies.

7. The communication device according to claim 1, wherein: The first signal path is a first signal receiving path, the second signal path is a second signal receiving path, the first signal amplifying circuit is a low noise amplifier, and the signal common processing circuit is a power splitter; After the first antenna receives a received signal, it is amplified by the first signal amplifying circuit and then split by the power splitter into a first analog signal corresponding to the first frequency band and a second analog signal corresponding to the second frequency band, so that the first signal transceiver circuit receives the first analog signal through the first signal path, and the second signal transceiver circuit receives the second analog signal through the second signal path.

8. The communication device according to claim 1, further comprising: a second antenna; and a second signal amplifying circuit electrically coupled between the second signal transceiver circuit and the second antenna; in, The switch electrically couples the second signal path and the second signal amplifying circuit in a non-combined communication state, and the second signal transceiver circuit is configured to communicate in the second frequency band through the second signal path, the second signal amplifying circuit and the second antenna in the non-combined communication state.

9. The communication device according to claim 1, wherein: The switch makes the second signal path float in a non-merging communication state so that the second signal transceiver circuit does not communicate.

10. The communication device according to claim 1, wherein: The first signal path and the first signal transceiver circuit form a first channel, the second signal path, the switch and the second signal transceiver circuit form a second channel, and the number of the second channels is N, where N is a positive integer greater than or equal to 1.

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