CN106849878A - The adjusting method of power amplifier system and power cost of power amplifier - Google Patents
The adjusting method of power amplifier system and power cost of power amplifier Download PDFInfo
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- CN106849878A CN106849878A CN201610939693.XA CN201610939693A CN106849878A CN 106849878 A CN106849878 A CN 106849878A CN 201610939693 A CN201610939693 A CN 201610939693A CN 106849878 A CN106849878 A CN 106849878A
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- 238000011897 real-time detection Methods 0.000 abstract 1
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- 238000010295 mobile communication Methods 0.000 description 7
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- 230000005236 sound signal Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 3
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
- H03F1/0216—Continuous control
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/56—Modifications of input or output impedances, not otherwise provided for
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
- H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
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- Power Engineering (AREA)
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Abstract
The invention discloses a kind of power amplifier system and the adjusting method of power cost of power amplifier, the system includes：Adjustment module, total capacitance value and/or total inductance value in the case where the power amplifier of radio-frequency front-end is in running order, adjusting the impedance matching circuit of the radio-frequency front-end；Current detection module, for during regulation, while detecting the power supply current value of the power amplifier；Setup module, for determining minimum power supply current value from the power supply current value for detecting, and it is total capacitance value and total inductance value of the impedance matching circuit in current operating state by the corresponding total capacitance value of the minimum power supply current value and total inductance value respective settings.Present system and method by real-time detection PA electric currents, and Intelligent adjustment impedance matching circuit total capacitance value and/or total inductance value so that PA minimum power consumption states are obtained in the case of different communication, so as to effectively reduce the power consumption of PA, heating is reduced.
Description
Technical Field
The invention relates to the technical field of terminal application, in particular to a power amplifier system and a power amplifier power consumption adjusting method.
Background
Power consumption and heat generation are important performance indicators of a mobile terminal. In addition to the display screen, the Power consumption and heat generation of the mobile terminal is a Power Amplifier (PA) in the Radio Frequency front end, also called Radio Frequency Power Amplifier (RFPA). The radio frequency front end is a part of the mobile terminal close to the radio frequency antenna, and comprises a transmitting path and a receiving path.
At present, no good scheme is available in the prior art for reducing the power consumption of the PA and reducing the heat generation of the PA.
Disclosure of Invention
The invention mainly aims to provide a power amplifier system and a power amplifier power consumption adjusting method, and aims to solve the problem that a power amplifier at a radio frequency front end in the prior art is high in power consumption.
To achieve the above object, the present invention provides a power amplifier system, comprising:
the adjusting module is used for adjusting the total capacitance value and/or the total inductance value of the impedance matching circuit of the radio frequency front end when the power amplifier of the radio frequency front end is in a working state;
the current detection module is used for simultaneously detecting the power supply current value of the power amplifier in the adjustment process;
and the setting module is used for determining a minimum power supply current value from the detected power supply current values, and correspondingly setting a total capacitance value and a total inductance value corresponding to the minimum power supply current value as the total capacitance value and the total inductance value of the impedance matching circuit in the current working state.
Further, the adjusting module is specifically configured to keep a total capacitance value of the impedance matching circuit unchanged and adjust a total inductance value of the impedance matching circuit when a power amplifier at a radio frequency front end is in a working state; or keeping the total inductance value of the impedance matching circuit unchanged, and adjusting the total capacitance value of the impedance matching circuit; alternatively, the total capacitance value and the total inductance value of the impedance matching circuit are adjusted simultaneously.
Further, the system also includes a capacitance regulator and a plurality of control switches; the impedance matching circuit is a pi-type network and comprises at least 2 capacitors and at least 2 inductors;
the adjusting module is specifically configured to adjust the capacitance value of each capacitor through the capacitor adjuster when adjusting the total capacitance value of the impedance matching circuit at the radio frequency front end, so as to adjust the total capacitance value of the impedance matching circuit at the radio frequency front end;
the adjusting module is specifically configured to adjust inductance values of the inductors through the plurality of control switches when adjusting a total inductance value of the impedance matching circuit at the radio frequency front end, so as to adjust the total inductance value of the impedance matching circuit at the radio frequency front end.
Specifically, the capacitance adjuster is configured to adjust a capacitance value of each capacitor for each capacitor input voltage under the control of the adjusting module;
and each control switch of the plurality of control switches is used for being opened or closed under the control of the adjusting module, so that the inductor corresponding to the control switch is in a connected state or a short-circuit state in the pi-type network. One control switch is correspondingly connected with one inductor in parallel.
Further, the current detection module includes:
the voltage acquisition unit is used for detecting the voltage value of a micro resistor preset on a power supply current path of the power amplifier;
and the current determining module is used for determining the power supply current value of the power amplifier based on the voltage value and the resistance value of the preset micro resistor.
In addition, in order to achieve the above object, the present invention further provides a method for adjusting power consumption of a power amplifier, the method comprising the steps of:
when a power amplifier of a radio frequency front end is in a working state, adjusting a total capacitance value and/or a total inductance value of an impedance matching circuit of the radio frequency front end;
in the adjusting process, simultaneously detecting the power supply current value of the power amplifier;
and determining a minimum power supply current value from the detected power supply current values, and correspondingly setting a total capacitance value and a total inductance value corresponding to the minimum power supply current value as the total capacitance value and the total inductance value of the impedance matching circuit in the current working state.
Further, the step of adjusting a capacitance value and/or an inductance value of an impedance matching circuit of the radio frequency front end includes:
keeping the total capacitance value of the impedance matching circuit unchanged, and adjusting the total inductance value of the impedance matching circuit; or,
keeping the total inductance value of the impedance matching circuit unchanged, and adjusting the total capacitance value of the impedance matching circuit; or,
the total capacitance and inductance values of the impedance matching circuit are adjusted simultaneously.
Further, the impedance matching circuit is a pi-type network and comprises at least 2 capacitors and at least 2 inductors; the step of adjusting the total capacitance value of the impedance matching circuit of the radio frequency front end comprises:
the capacitance values of the capacitors are respectively adjusted through a preset capacitor adjuster, so that the total capacitance value of the impedance matching circuit at the radio frequency front end is adjusted;
the step of adjusting a total inductance value of an impedance matching circuit of the radio frequency front end comprises:
and the inductance values of the corresponding inductors are respectively adjusted through a plurality of preset control switches, so that the total inductance value of the impedance matching circuit at the radio frequency front end is adjusted.
Specifically, the step of adjusting the capacitance value of each capacitor respectively by a preset capacitance adjuster includes:
inputting voltage to each capacitor through the preset capacitor regulator to regulate the capacitance value of each capacitor;
one control switch is correspondingly connected with one inductor in parallel; the step of respectively adjusting the inductance values of the corresponding inductors through a plurality of preset control switches comprises the following steps:
and aiming at each control switch, controlling the control switch to be opened or closed so as to enable the inductor corresponding to the control switch to be in a connected state or a short-circuit state in the pi-type network.
Further, the step of detecting the supply current value of the power amplifier includes:
detecting a voltage value of a micro resistor preset on a power supply current path of the power amplifier;
and determining the power supply current value of the power amplifier based on the voltage value and the resistance value of the preset micro resistor.
According to the power amplifier system and the power amplifier power consumption adjusting method, the PA current is detected in real time, and the total capacitance value and/or the total inductance value of the impedance matching circuit are/is intelligently adjusted, so that the PA minimum power consumption state is obtained under different communication conditions, the PA power consumption is effectively reduced, the heating is reduced, the power consumption of the whole system is further effectively reduced, the heating is reduced, and the user experience effect is improved.
Drawings
Fig. 1 is a schematic diagram of a hardware structure of an optional mobile terminal for implementing various embodiments of the present invention;
FIG. 2 is a diagram of a wireless communication system for the mobile terminal shown in FIG. 1;
fig. 3 is a schematic diagram of a hardware structure of a power amplifier system according to an embodiment of the invention;
FIG. 4 is a schematic circuit diagram of an impedance matching circuit according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of an exemplary power amplifier system in accordance with an embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating the principle of total inductance adjustment according to an embodiment of the present invention;
fig. 7 is a flowchart of a method for adjusting power consumption of a power amplifier according to an embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A mobile terminal implementing various embodiments of the present invention will now be described with reference to the accompanying drawings. In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in themselves. Thus, "module" and "component" may be used in a mixture.
The mobile terminal may be implemented in various forms. For example, the terminal described in the present invention may include a mobile terminal such as a mobile phone, a smart phone, a notebook computer, a digital broadcast receiver, a PDA (personal digital assistant), a PAD (tablet computer), a PMP (portable multimedia player), a navigation device, and the like, and a stationary terminal such as a digital TV, a desktop computer, and the like. In the following, it is assumed that the terminal is a mobile terminal. However, it will be understood by those skilled in the art that the configuration according to the embodiment of the present invention can be applied to a fixed type terminal in addition to elements particularly used for moving purposes.
Fig. 1 is a schematic hardware configuration of a mobile terminal implementing various embodiments of the present invention.
The mobile terminal 100 may include a wireless communication unit 110, an a/V (audio/video) input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory 160, an interface unit 170, a controller 180, and a power supply unit 190, etc. Fig. 1 illustrates a mobile terminal having various components, but it is to be understood that not all illustrated components are required to be implemented. More or fewer components may alternatively be implemented. Elements of the mobile terminal will be described in detail below.
The wireless communication unit 110 typically includes one or more components that allow radio communication between the mobile terminal 100 and a wireless communication system or network. For example, the wireless communication unit may include at least one of a broadcast receiving module 111, a mobile communication module 112, a wireless internet module 113, a short-range communication module 114, and a location information module 115.
The broadcast receiving module 111 receives a broadcast signal and/or broadcast associated information from an external broadcast management server via a broadcast channel. The broadcast channel may include a satellite channel and/or a terrestrial channel. The broadcast management server may be a server that generates and transmits broadcast signals and/or broadcast-related information or receives previously generated broadcast signalsNumber and/or broadcast related information and transmit it to the server of the terminal. The broadcast signal may include a TV broadcast signal, a radio broadcast signal, a data broadcast signal, and the like. Also, the broadcast signal may further include a broadcast signal combined with a TV or radio broadcast signal. The broadcast associated information may also be provided via a mobile communication network, and in this case, the broadcast associated information may be received by the mobile communication module 112. The broadcast signal may exist in various forms, for example, it may exist in the form of an Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB), an Electronic Service Guide (ESG) of digital video broadcasting-handheld (DVB-H), and the like. The broadcast receiving module 111 may receive a signal broadcast by using various types of broadcasting systems. In particular, the broadcast receiving module 111 may receive a broadcast signal by using a signal such as multimedia broadcasting-terrestrial (DMB-T), digital multimedia broadcasting-satellite (DMB-S), digital video broadcasting-handheld (DVB-H), forward link media (MediaFLO)@) A digital broadcasting system of a terrestrial digital broadcasting integrated service (ISDB-T), etc. receives digital broadcasting. The broadcast receiving module 111 may be constructed to be suitable for various broadcasting systems that provide broadcast signals as well as the above-mentioned digital broadcasting systems. The broadcast signal and/or broadcast associated information received via the broadcast receiving module 111 may be stored in the memory 160 (or other type of storage medium).
The mobile communication module 112 transmits and/or receives radio signals to and/or from at least one of a base station (e.g., access point, node B, etc.), an external terminal, and a server. Such radio signals may include voice call signals, video call signals, or various types of data transmitted and/or received according to text and/or multimedia messages.
The wireless internet module 113 supports wireless internet access of the mobile terminal. The module may be internally or externally coupled to the terminal. The wireless internet access technology to which the module relates may include WLAN (wireless LAN) (Wi-Fi), Wibro (wireless broadband), Wimax (worldwide interoperability for microwave access), HSDPA (high speed downlink packet access), and the like.
The short-range communication module 114 is a module for supporting short-range communication. Some examples of short-range communication technologies include bluetoothTMRadio Frequency Identification (RFID), infrared data association (IrDA), Ultra Wideband (UWB), zigbeeTMAnd so on.
The location information module 115 is a module for checking or acquiring location information of the mobile terminal. A typical example of the location information module is a GPS (global positioning system). According to the current technology, the GPS module 115 calculates distance information and accurate time information from three or more satellites and applies triangulation to the calculated information, thereby accurately calculating three-dimensional current location information according to longitude, latitude, and altitude. Currently, a method for calculating position and time information uses three satellites and corrects an error of the calculated position and time information by using another satellite. In addition, the GPS module 115 can calculate speed information by continuously calculating current position information in real time.
The a/V input unit 120 is used to receive an audio or video signal. The a/V input unit 120 may include a camera 121 and a microphone 122, and the camera 121 processes image data of still pictures or video obtained by an image capturing apparatus in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 151. The image frames processed by the cameras 121 may be stored in the memory 160 (or other storage medium) or transmitted via the wireless communication unit 110, and two or more cameras 121 may be provided according to the construction of the mobile terminal. The microphone 122 may receive sounds (audio data) via the microphone in a phone call mode, a recording mode, a voice recognition mode, or the like, and can process such sounds into audio data. The processed audio (voice) data may be converted into a format output transmittable to a mobile communication base station via the mobile communication module 112 in case of a phone call mode. The microphone 122 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting audio signals.
The user input unit 130 may generate key input data according to a command input by a user to control various operations of the mobile terminal. The user input unit 130 allows a user to input various types of information, and may include a keyboard, dome sheet, touch pad (e.g., a touch-sensitive member that detects changes in resistance, pressure, capacitance, and the like due to being touched), scroll wheel, joystick, and the like. In particular, when the touch pad is superimposed on the display unit 151 in the form of a layer, a touch screen may be formed.
The sensing unit 140 detects a current state of the mobile terminal 100 (e.g., an open or closed state of the mobile terminal 100), a position of the mobile terminal 100, presence or absence of contact (i.e., touch input) by a user with the mobile terminal 100, an orientation of the mobile terminal 100, acceleration or deceleration movement and direction of the mobile terminal 100, and the like, and generates a command or signal for controlling an operation of the mobile terminal 100. For example, when the mobile terminal 100 is implemented as a slide-type mobile phone, the sensing unit 140 may sense whether the slide-type phone is opened or closed. In addition, the sensing unit 140 can detect whether the power supply unit 190 supplies power or whether the interface unit 170 is coupled with an external device.
The interface unit 170 serves as an interface through which at least one external device is connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The identification module may store various information for authenticating a user using the mobile terminal 100 and may include a User Identity Module (UIM), a Subscriber Identity Module (SIM), a Universal Subscriber Identity Module (USIM), and the like. In addition, a device having an identification module (hereinafter, referred to as an "identification device") may take the form of a smart card, and thus, the identification device may be connected with the mobile terminal 100 via a port or other connection means. The interface unit 170 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal and the external device.
In addition, when the mobile terminal 100 is connected with an external cradle, the interface unit 170 may serve as a path through which power is supplied from the cradle to the mobile terminal 100 or may serve as a path through which various command signals input from the cradle are transmitted to the mobile terminal. Various command signals or power input from the cradle may be used as signals for recognizing whether the mobile terminal is accurately mounted on the cradle. The output unit 150 is configured to provide output signals (e.g., audio signals, video signals, alarm signals, vibration signals, etc.) in a visual, audio, and/or tactile manner. The output unit 150 may include a display unit 151, an audio output module 152, an alarm unit 153, and the like.
The display unit 151 may display information processed in the mobile terminal 100. For example, when the mobile terminal 100 is in a phone call mode, the display unit 151 may display a User Interface (UI) or a Graphical User Interface (GUI) related to a call or other communication (e.g., text messaging, multimedia file downloading, etc.). When the mobile terminal 100 is in a video call mode or an image capturing mode, the display unit 151 may display a captured image and/or a received image, a UI or GUI showing a video or an image and related functions, and the like.
Meanwhile, when the display unit 151 and the touch pad are overlapped with each other in the form of a layer to form a touch screen, the display unit 151 may serve as an input device and an output device. The display unit 151 may include at least one of a Liquid Crystal Display (LCD), a thin film transistor LCD (TFT-LCD), an Organic Light Emitting Diode (OLED) display, a flexible display, a three-dimensional (3D) display, and the like. Some of these displays may be configured to be transparent to allow a user to view from the outside, which may be referred to as transparent displays, and a typical transparent display may be, for example, a TOLED (transparent organic light emitting diode) display or the like. Depending on the particular desired implementation, the mobile terminal 100 may include two or more display units (or other display devices), for example, the mobile terminal may include an external display unit (not shown) and an internal display unit (not shown). The touch screen may be used to detect a touch input pressure as well as a touch input position and a touch input area.
The audio output module 152 may convert audio data received by the wireless communication unit 110 or stored in the memory 160 into an audio signal and output as sound when the mobile terminal is in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output module 152 may provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output module 152 may include a speaker, a buzzer, and the like.
The alarm unit 153 may provide an output to notify the mobile terminal 100 of the occurrence of an event. Typical events may include call reception, message reception, key signal input, touch input, and the like. In addition to audio or video output, the alarm unit 153 may provide output in different ways to notify the occurrence of an event. For example, the alarm unit 153 may provide an output in the form of vibration, and when a call, a message, or some other incoming communication (incomingmunication) is received, the alarm unit 153 may provide a tactile output (i.e., vibration) to inform the user thereof. By providing such a tactile output, the user can recognize the occurrence of various events even when the user's mobile phone is in the user's pocket. The alarm unit 153 may also provide an output notifying the occurrence of an event via the display unit 151 or the audio output module 152.
The memory 160 may store software programs and the like for processing and controlling operations performed by the controller 180, or may temporarily store data (e.g., a phonebook, messages, still images, videos, and the like) that has been or will be output. Also, the memory 160 may store data regarding various ways of vibration and audio signals output when a touch is applied to the touch screen.
The memory 160 may include at least one type of storage medium including a flash memory, a hard disk, a multimedia card, a card-type memory (e.g., SD or DX memory, etc.), a Random Access Memory (RAM), a Static Random Access Memory (SRAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, an optical disk, and the like. Also, the mobile terminal 100 may cooperate with a network storage device that performs a storage function of the memory 160 through a network connection.
The controller 180 generally controls the overall operation of the mobile terminal. For example, the controller 180 performs control and processing related to voice calls, data communications, video calls, and the like. In addition, the controller 180 may include a multimedia module 181 for reproducing (or playing back) multimedia data, and the multimedia module 181 may be constructed within the controller 180 or may be constructed separately from the controller 180. The controller 180 may perform a pattern recognition process to recognize a handwriting input or a picture drawing input performed on the touch screen as a character or an image.
The power supply unit 190 receives external power or internal power and provides appropriate power required to operate various elements and components under the control of the controller 180.
The adjusting module 200 adjusts a total capacitance value and/or a total inductance value of an impedance matching circuit of the radio frequency front end; the current detection module 210 detects the power supply current value of the power amplifier during the adjustment process; the setting module 220 sets the total capacitance value and the total inductance value of the impedance matching circuit in the current operation state.
The various embodiments described herein may be implemented in a computer-readable medium using, for example, computer software, hardware, or any combination thereof. For a hardware implementation, the embodiments described herein may be implemented using at least one of an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a processor, a controller, a microcontroller, a microprocessor, an electronic unit designed to perform the functions described herein, and in some cases, such embodiments may be implemented in the controller 180. For a software implementation, the implementation such as a process or a function may be implemented with a separate software module that allows performing at least one function or operation. The software codes may be implemented by software applications (or programs) written in any suitable programming language, which may be stored in the memory 160 and executed by the controller 180.
Up to this point, mobile terminals have been described in terms of their functionality. Hereinafter, a slide-type mobile terminal among various types of mobile terminals, such as a folder-type, bar-type, swing-type, slide-type mobile terminal, and the like, will be described as an example for the sake of brevity. Accordingly, the present invention can be applied to any type of mobile terminal, and is not limited to a slide type mobile terminal.
The mobile terminal 100 as shown in fig. 1 may be configured to operate with communication systems such as wired and wireless communication systems and satellite-based communication systems that transmit data via frames or packets.
A communication system in which a mobile terminal according to the present invention is operable will now be described with reference to fig. 2.
Such communication systems may use different air interfaces and/or physical layers. For example, the air interface used by the communication system includes, for example, Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Code Division Multiple Access (CDMA), and Universal Mobile Telecommunications System (UMTS) (in particular, Long Term Evolution (LTE)), global system for mobile communications (GSM), and the like. By way of non-limiting example, the following description relates to a CDMA communication system, but such teachings are equally applicable to other types of systems.
Referring to fig. 2, the CDMA wireless communication system may include a plurality of mobile terminals 100, a plurality of Base Stations (BSs) 270, Base Station Controllers (BSCs) 275, and a Mobile Switching Center (MSC) 280. The MSC280 is configured to interface with a Public Switched Telephone Network (PSTN) 290. The MSC280 is also configured to interface with a BSC275, which may be coupled to the base station 270 via a backhaul. The backhaul may be constructed according to any of several known interfaces including, for example, E1/T1, ATM, IP, PPP, frame Relay, HDSL, ADSL, or xDSL. It will be understood that a system as shown in fig. 2 may include multiple BSCs 275.
Each BS270 may serve one or more sectors (or regions), each sector covered by a multi-directional antenna or an antenna pointing in a particular direction being radially distant from the BS 270. Alternatively, each partition may be covered by two or more antennas for diversity reception. Each BS270 may be configured to support multiple frequency allocations, with each frequency allocation having a particular frequency spectrum (e.g., 1.25MHz,5MHz, etc.).
The intersection of partitions with frequency allocations may be referred to as a CDMA channel. The BS270 may also be referred to as a Base Transceiver Subsystem (BTS) or other equivalent terminology. In such a case, the term "base station" may be used to generically refer to a single BSC275 and at least one BS 270. The base stations may also be referred to as "cells". Alternatively, each sector of a particular BS270 may be referred to as a plurality of cell sites.
As shown in fig. 2, a Broadcast Transmitter (BT)295 transmits a broadcast signal to the mobile terminal 100 operating within the system. A broadcast receiving module 111 as shown in fig. 1 is provided at the mobile terminal 100 to receive a broadcast signal transmitted by the BT 295. In fig. 2, several Global Positioning System (GPS) satellites 300 are shown. The satellite 300 assists in locating at least one of the plurality of mobile terminals 100.
In fig. 2, a plurality of satellites 300 are depicted, but it is understood that useful positioning information may be obtained with any number of satellites. The GPS module 115 as shown in fig. 1 is generally configured to cooperate with satellites 300 to obtain desired positioning information. Other techniques that can track the location of the mobile terminal may be used instead of or in addition to GPS tracking techniques. In addition, at least one GPS satellite 300 may selectively or additionally process satellite DMB transmission.
As a typical operation of the wireless communication system, the BS270 receives reverse link signals from various mobile terminals 100. The mobile terminal 100 is generally engaged in conversations, messaging, and other types of communications. Each reverse link signal received by a particular base station 270 is processed within the particular BS 270. The obtained data is forwarded to the associated BSC 275. The BSC provides call resource allocation and mobility management functions including coordination of soft handoff procedures between BSs 270. The BSCs 275 also route the received data to the MSC280, which provides additional routing services for interfacing with the PSTN 290. Similarly, the PSTN290 interfaces with the MSC280, the MSC interfaces with the BSCs 275, and the BSCs 275 accordingly control the BS270 to transmit forward link signals to the mobile terminal 100.
Based on the above mobile terminal hardware structure and communication system, various embodiments of the present invention are proposed.
As shown in fig. 3, a first embodiment of the present invention provides a power amplifier system, including:
the adjusting module 200 is configured to adjust a total capacitance value and/or a total inductance value of an impedance matching circuit of a radio frequency front end when a power amplifier of the radio frequency front end is in an operating state;
a current detection module 210, configured to detect a power supply current value of the power amplifier during a regulation process;
the setting module 220 is configured to determine a minimum power supply current value from the detected power supply current values, and set a total capacitance value and a total inductance value corresponding to the minimum power supply current value as a total capacitance value and a total inductance value of the impedance matching circuit in the current working state.
According to the power amplifier system in the embodiment of the invention, the PA current is detected in real time, and the total capacitance value and/or the total inductance value of the impedance matching circuit are/is intelligently adjusted, so that the PA minimum power consumption state is obtained under different communication conditions, the PA power consumption is effectively reduced, the heating is reduced, the power consumption of the whole system is further effectively reduced, the heating is reduced, and the user experience effect is improved.
The impedance matching circuit may be a pi-type network as shown in fig. 4, in which the inductor (lbtotal) is a plurality of inductors connected in series, for example, 3 inductors.
That is to say, in the embodiment of the present invention, on the premise of ensuring impedance matching, the total capacitance value or the total inductance value in the pi-type network is adjusted, and meanwhile, the current value of the PA is detected, and when the current value of the PA reaches the minimum, the adjustment of the total capacitance value or the total inductance value in the pi-type network is stopped; and setting the total capacitance value and the total inductance value corresponding to the minimum current value as the total capacitance value and the total inductance value of the impedance matching circuit in the current working state.
Specifically, as shown in fig. 5, the radio frequency front end includes a PA, a pi network impedance matching circuit, a filter, a radio frequency switch, an antenna, an adjusting module, a current detecting module, and a setting module.
The regulation module 200 may be implemented by a combination of a capacitive regulator and a plurality of control switches.
When the capacitance adjuster DA (Digital to Analog) changes the output voltage of each capacitor, the size of each capacitor can be controlled.
The plurality of control switches may enable adjustment of the total inductance value. For example, as shown in fig. 6, the total inductance includes L1, L2, and L3, and the plurality of control switches are S1, S2, and S3; closing a control switch S1 shorts the inductor L1 associated with that control switch, which corresponds to a reduction in the total inductance, and conversely, opening the switch corresponds to an increase in the inductance of the circuit.
The current detection module 210 may be implemented by high precision current detection. For example, the supply current of the PA passes through the micro resistor R1 to form a voltage, the voltage is amplified by a precision amplifier and then is collected by an Analog Digital (AD) converter (AD), and the collected voltage and the PA current are in a direct proportional relationship. The total PA current can be calculated by the processor.
The working flow of the system of the embodiment of the invention is briefly described.
For example:
step 1, detecting the current value A1 by using a high-precision current detection amplifier when the PA is in a working state.
And step 2, controlling the capacitance value of the capacitance regulator through DA, and detecting the current value A2 in the state of changing the capacitance value.
And step 3, comparing the values of A1 and A2, and changing the capacitance value of the capacitance regulator again to detect the PA current A3.
And 4, selecting the minimum value from the current values, and setting the capacitance value corresponding to the minimum current value as the current total capacitance value of the capacitor.
For another example:
step 1, adjusting the inductance value of the inductor when the PA is in a working state.
And 2, detecting the current value of the PA corresponding to each inductance value.
And 3, selecting the minimum value from the current values, and setting the total inductance value corresponding to the minimum current value as the current total inductance value of the inductor.
The following steps are repeated:
and step 1, adjusting the capacitance value of the adjusting capacitor on the premise of ensuring impedance matching.
And step 2, adjusting the inductance value of the inductor.
And step 3, detecting the current value of the PA corresponding to each capacitance value and inductance value.
And 4, selecting the minimum value from the current values, setting the capacitance value corresponding to the minimum current value as the total capacitance value of the capacitor, and setting the inductance value corresponding to the minimum current value as the total inductance value of the inductor.
According to the embodiment of the invention, the PA current is detected in real time through the working process, and the matching is intelligently adjusted, so that the minimum power consumption state is obtained under different communication conditions; the power consumption of the whole system can be better reduced, the heat emission is reduced, and the user experience effect is improved.
On the basis of the first embodiment, modified embodiments of the first embodiment are further proposed, and it is to be noted herein that, in order to make the description brief, only the differences from the first embodiment are described in each modified embodiment.
In an embodiment of the present invention, the adjusting module is specifically configured to, when a power amplifier of a radio frequency front end is in an operating state, keep a total capacitance value of the impedance matching circuit unchanged, and adjust a total inductance value of the impedance matching circuit; or keeping the total inductance value of the impedance matching circuit unchanged, and adjusting the total capacitance value of the impedance matching circuit; alternatively, the total capacitance value and the total inductance value of the impedance matching circuit are adjusted simultaneously.
In another embodiment of the present invention, the system further comprises a capacitive regulator and a plurality of control switches; the impedance matching circuit is a pi-type network and comprises at least 2 capacitors and at least 2 inductors;
the adjusting module is specifically configured to adjust the capacitance value of each capacitor through the capacitor adjuster when adjusting the total capacitance value of the impedance matching circuit at the radio frequency front end, so as to adjust the total capacitance value of the impedance matching circuit at the radio frequency front end;
the adjusting module is specifically configured to adjust inductance values of the inductors through the plurality of control switches when adjusting a total inductance value of the impedance matching circuit at the radio frequency front end, so as to adjust the total inductance value of the impedance matching circuit at the radio frequency front end.
Furthermore, the capacitance regulator is used for regulating the capacitance value of each capacitor according to the input voltage of each capacitor under the control of the regulating module;
and each control switch of the plurality of control switches is used for being opened or closed under the control of the adjusting module, so that the inductor corresponding to the control switch is in a connected state or a short-circuit state in the pi-type network. One control switch is correspondingly connected with one inductor in parallel. That is, as shown in fig. 6, closing a control switch S1 can short-circuit the inductor L1 corresponding to the control switch, that is, the inductor L2 is in a short-circuit state, which is equivalent to reducing the total inductance value, whereas opening the control switch S1 can make the inductor L1 corresponding to the control switch in a connected state, which is equivalent to increasing the inductance in the circuit.
In still another embodiment of the present invention, the current detection module includes:
the voltage acquisition unit is used for detecting the voltage value of a micro resistor preset on a power supply current path of the power amplifier;
and the current determining module is used for determining the power supply current value of the power amplifier based on the voltage value and the resistance value of the preset micro resistor.
The invention further provides a method for adjusting the power consumption of the power amplifier.
As shown in fig. 7, a method for adjusting power consumption of a power amplifier according to this embodiment is characterized by comprising:
s701, when a power amplifier at the radio frequency front end is in a working state, adjusting the total capacitance value and/or the total inductance value of an impedance matching circuit at the radio frequency front end;
s702, detecting the power supply current value of the power amplifier in the adjusting process;
s703 determines a minimum power supply current value from the detected power supply current values, and sets a total capacitance value and a total inductance value corresponding to the minimum power supply current value as a total capacitance value and a total inductance value of the impedance matching circuit in the current working state.
According to the method for adjusting the power consumption of the power amplifier, the PA current is detected in real time, and the total capacitance value and/or the total inductance value of the impedance matching circuit are/is intelligently adjusted, so that the PA minimum power consumption state is obtained under different communication conditions, the PA power consumption is effectively reduced, the heating is reduced, the power consumption of the whole system is further effectively reduced, the heating is reduced, and the user experience effect is improved.
Wherein the step of adjusting a capacitance value and/or an inductance value of an impedance matching circuit of the radio frequency front end comprises:
keeping the total capacitance value of the impedance matching circuit unchanged, and adjusting the total inductance value of the impedance matching circuit; or,
keeping the total inductance value of the impedance matching circuit unchanged, and adjusting the total capacitance value of the impedance matching circuit; or,
the total capacitance and inductance values of the impedance matching circuit are adjusted simultaneously.
The impedance matching circuit is a pi-type network and comprises at least 2 capacitors and at least 2 inductors; the step of adjusting the total capacitance value of the impedance matching circuit of the radio frequency front end comprises:
the capacitance values of the capacitors are respectively adjusted through a preset capacitor adjuster, so that the total capacitance value of the impedance matching circuit at the radio frequency front end is adjusted;
the step of adjusting a total inductance value of an impedance matching circuit of the radio frequency front end comprises:
and the inductance values of the corresponding inductors are respectively adjusted through a plurality of preset control switches, so that the total inductance value of the impedance matching circuit at the radio frequency front end is adjusted.
Further, the step of adjusting the capacitance values of the capacitors respectively by preset capacitance adjusters includes:
respectively inputting voltage to each capacitor through the preset capacitor regulator to regulate the capacitance value of each capacitor;
one control switch is correspondingly connected with one inductor in parallel; the step of respectively adjusting the inductance values of the corresponding inductors through a plurality of preset control switches comprises the following steps:
and for each control switch, controlling the connection or short circuit of the inductor correspondingly connected in parallel with the control switch in the pi-type network by controlling the disconnection or the connection of the control switch.
Specifically, the step of detecting the power supply current value of the power amplifier includes:
detecting a voltage value of a micro resistor preset on a power supply current path of the power amplifier;
and determining the power supply current value of the power amplifier based on the voltage value and the resistance value of the preset micro resistor.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A power amplifier system, the system comprising:
the adjusting module is used for adjusting the total capacitance value and/or the total inductance value of the impedance matching circuit of the radio frequency front end when the power amplifier of the radio frequency front end is in a working state;
the current detection module is used for simultaneously detecting the power supply current value of the power amplifier in the adjustment process;
and the setting module is used for determining a minimum power supply current value from the detected power supply current values, and correspondingly setting a total capacitance value and a total inductance value corresponding to the minimum power supply current value as the total capacitance value and the total inductance value of the impedance matching circuit in the current working state.
2. The system according to claim 1, wherein the adjusting module is specifically configured to keep a total capacitance value of the impedance matching circuit unchanged and adjust a total inductance value of the impedance matching circuit when a power amplifier of the radio frequency front end is in an operating state; or keeping the total inductance value of the impedance matching circuit unchanged, and adjusting the total capacitance value of the impedance matching circuit; alternatively, the total capacitance value and the total inductance value of the impedance matching circuit are adjusted simultaneously.
3. The system of claim 1 or 2, further comprising a capacitance regulator and a plurality of control switches; the impedance matching circuit is a pi-type network and comprises at least 2 capacitors and at least 2 inductors;
the adjusting module is specifically configured to adjust the capacitance value of each capacitor through the capacitor adjuster when adjusting the total capacitance value of the impedance matching circuit at the radio frequency front end, so as to adjust the total capacitance value of the impedance matching circuit at the radio frequency front end;
the adjusting module is specifically configured to adjust inductance values of the inductors through the plurality of control switches when adjusting a total inductance value of the impedance matching circuit at the radio frequency front end, so as to adjust the total inductance value of the impedance matching circuit at the radio frequency front end.
4. The system of claim 3, wherein the capacitance adjuster is configured to adjust the capacitance value of each capacitor for each capacitor input voltage under control of the adjusting module;
and each control switch of the plurality of control switches is used for being opened or closed under the control of the adjusting module, so that the inductor corresponding to the control switch is in a connected state or a short-circuit state in the pi-type network. One control switch is correspondingly connected with one inductor in parallel.
5. The system of claim 1 or 2, wherein the current detection module comprises:
the voltage acquisition unit is used for detecting the voltage value of a micro resistor preset on a power supply current path of the power amplifier;
and the current determining module is used for determining the power supply current value of the power amplifier based on the voltage value and the resistance value of the preset micro resistor.
6. A method for adjusting power consumption of a power amplifier, the method comprising the steps of:
when a power amplifier of a radio frequency front end is in a working state, adjusting a total capacitance value and/or a total inductance value of an impedance matching circuit of the radio frequency front end;
in the adjusting process, simultaneously detecting the power supply current value of the power amplifier;
and determining a minimum power supply current value from the detected power supply current values, and correspondingly setting a total capacitance value and a total inductance value corresponding to the minimum power supply current value as the total capacitance value and the total inductance value of the impedance matching circuit in the current working state.
7. The method of claim 6, wherein the step of adjusting a capacitance and/or inductance value of an impedance matching circuit of the radio frequency front end comprises:
keeping the total capacitance value of the impedance matching circuit unchanged, and adjusting the total inductance value of the impedance matching circuit; or,
keeping the total inductance value of the impedance matching circuit unchanged, and adjusting the total capacitance value of the impedance matching circuit; or,
the total capacitance and inductance values of the impedance matching circuit are adjusted simultaneously.
8. The method of claim 6 or 7, wherein the impedance matching circuit is a pi-type network comprising at least 2 capacitors and at least 2 inductors; the step of adjusting the total capacitance value of the impedance matching circuit of the radio frequency front end comprises:
the capacitance value of each capacitor is adjusted through a preset capacitor adjuster, so that the total capacitance value of an impedance matching circuit at the radio frequency front end is adjusted;
the step of adjusting a total inductance value of an impedance matching circuit of the radio frequency front end comprises:
and the inductance values of the corresponding inductors are respectively adjusted through a plurality of preset control switches, so that the total inductance value of the impedance matching circuit at the radio frequency front end is adjusted.
9. The method of claim 8, wherein the step of adjusting the capacitance value of each capacitor via a preset capacitance adjuster comprises:
respectively inputting voltage to each capacitor through the preset capacitor regulator to regulate the capacitance value of each capacitor;
one control switch is correspondingly connected with one inductor in parallel; the step of respectively adjusting the inductance values of the corresponding inductors through a plurality of preset control switches comprises the following steps:
and aiming at each control switch, controlling the control switch to be opened or closed so as to enable the inductor corresponding to the control switch to be in a connected state or a short-circuit state in the pi-type network.
10. The method of claim 6 or 7, wherein the step of detecting the supply current value of the power amplifier comprises:
detecting a voltage value of a micro resistor preset on a power supply current path of the power amplifier;
and determining the power supply current value of the power amplifier based on the voltage value and the resistance value of the preset micro resistor.
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Application publication date: 20170613 |