CN105789840A - Filtering antenna apparatus, adjustment method for antenna bandwidth, and mobile terminal - Google Patents
Filtering antenna apparatus, adjustment method for antenna bandwidth, and mobile terminal Download PDFInfo
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- CN105789840A CN105789840A CN201610103733.7A CN201610103733A CN105789840A CN 105789840 A CN105789840 A CN 105789840A CN 201610103733 A CN201610103733 A CN 201610103733A CN 105789840 A CN105789840 A CN 105789840A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0053—Selective devices used as spatial filter or angular sidelobe filter
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
Abstract
The invention discloses a filtering antenna apparatus, an adjustment method for antenna bandwidth, and a mobile terminal. The filtering antenna apparatus comprises an RLC resonance circuit and at least one LC resonator; the resistor in the RLC resonance circuit is taken as a radiation part of the filtering antenna apparatus; the corresponding LC resonator is cascaded at the front end of the power supply side of the RLC resonance circuit; after a radio frequency signal enters the corresponding LC resonator, the radio frequency signal is coupled with the RLC resonance circuit to generate an adjacent resonant mode, and energy is radiated outwards through the radiation part; the corresponding LC resonator in the RLC resonance circuit is coupled with the front-end-cascaded LC resonator to generate at least two resonant frequencies, and the energy is radiated through an equivalent resistor R in the RLC resonance circuit; the radio frequency signal enters the corresponding LC resonator from an antenna feed point, the corresponding LC resonator is coupled with the RLC resonance circuit, and the adjacent resonant modes are overlapped, so that the antenna bandwidth is increased; and meanwhile, the clutter signals in the passband can be filtered as well.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of filter antenna device, the method for adjustment of the beamwidth of antenna and mobile terminal.
Background technology
Along with the extensive use of 4G technology, add the continuous pursuit to antenna the whole network general character energy of each cell phone manufacturer, so that multiple frequency ranges of different systems overlap together, therefore the requirement of the beamwidth of antenna is being become more and more higher.Particularly in the 698MHz-960MHz of low frequency, the 1710MHz-2690MHz of high frequency, bandwidth span is respectively up to 262MHz and 980MHz, and the performance of antenna is brought stern challenge by this.Traditional antenna is often operated in single-point mode of resonance, i.e. only one of which resonance frequency in a bandwidth, and this just inevitably results in the problem that bandwidth is narrow；Again or in order to increase bandwidth, open up a plurality of current path, cause antenna area excessive, be unfavorable for the designer trends of miniaturization day by day.
Summary of the invention
Present invention is primarily targeted at and propose a kind of filter antenna device, the method for adjustment of the beamwidth of antenna and mobile terminal, it is intended to solve the defect that the bandwidth of antenna can not meet the bandwidth requirement of mobile communication.
For achieving the above object, a kind of filter antenna device provided by the invention, including:
RLC resonance circuit and at least one LC resonator；
Resistance in described RLC resonance circuit is as the Department of Radiation of filter antenna device；
Described LC resonator stages is coupled to the front end of described RLC resonance circuit, and radiofrequency signal enters after LC resonator and intercouples with described RLC resonance circuit, produces adjacent mode of resonance, energy by Department of Radiation to external radiation.
Wherein, described resonator is arranged on printed circuit board (PCB).
Wherein, described resonator is integrated in resonance chip.
Wherein, described resonance chip is additionally provided with the actuator of access number for regulating described resonator.
Wherein, the electric capacity of described LC resonator and inductance are adjustable.
Wherein, the operating frequency of described LC resonator according toIt is adjusted, wherein ω0Representing the operating frequency of LC resonator, L represents the inductance value of inductance in LC resonator；C represents the capacitance of electric capacity in LC resonator.
Wherein, described RLC resonance circuit is realized by Monople antenna, IFA antenna or PIFA antenna.
Wherein, the underface of described RLC resonance circuit is provided with empty regions.Additionally, for achieving the above object, the present invention also proposes the method for adjustment of a kind of beamwidth of antenna, and for above-mentioned filter antenna device, this method of adjustment includes:
Electrical length according to filter antenna device and the bandwidth of demand, calculate the number needing to access the resonator of antenna；
Adjusting the access state of described resonator, keeping the number accessing the resonator of antenna is calculated number.
Finally also provide for a kind of mobile terminal, including the filter antenna device described in aforementioned any one.
Filter antenna device, the method for adjustment of the beamwidth of antenna and the mobile terminal that the present invention proposes, LC resonator in RLC resonance circuit can intercouple with the LC resonator of front end cascade, producing at least 2 resonant frequencies, energy is then radiate by the equivalent resistance R in RLC resonance circuit.The LC resonator of cascade is positioned at the side of signal source, and signal enters LC resonator from antenna feed point, and LC resonator will produce to intercouple with RLC resonance circuit, and adjacent mode of resonance can produce superposition, it is achieved the increase of the beamwidth of antenna.Additionally, whole device also has the performance of band filter, the noise signal in passband can be played the effect filtered..
Accompanying drawing explanation
Fig. 1 is the hardware architecture diagram realizing each one optional mobile terminal of embodiment of the present invention；
Fig. 2 is the wireless communication system schematic diagram of mobile terminal as shown in Figure 1；
The equivalent circuit theory figure of the Fig. 3 a kind of filter antenna device for providing in the specific embodiment of the invention；
The reflection coefficient graph of a relation of the Fig. 4 a kind of filter antenna device for providing in the specific embodiment of the invention；
The radiation characteristic graph of a relation of the Fig. 5 a kind of filter antenna device for providing in the specific embodiment of the invention；
Fig. 6 is the method flow diagram of the method for adjustment of a kind of beamwidth of antenna of offer in the specific embodiment of the invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
The mobile terminal realizing each embodiment of the present invention is described referring now to accompanying drawing.In follow-up description, use the suffix being used for representing such as " module ", " parts " or " unit " of element only for being conducive to the explanation of the present invention, itself do not have specific meaning.Therefore, " module " and " parts " can mixedly use.
Mobile terminal can be implemented in a variety of manners.Such as, the mobile terminal described in the present invention is mainly for mobile phone.
Fig. 1 is the hardware architecture diagram realizing each one optional mobile terminal of embodiment of the present invention.
Mobile terminal 100 can include wireless communication unit 110, A/V (audio/video) input block 120, user input unit 130, sensing unit 140, output unit 150, memorizer 160, interface unit 170, controller 180 and power subsystem 190 etc..Fig. 1 illustrates the mobile terminal with various assembly, it should be understood that be not required for implementing all assemblies illustrated.Can alternatively implement more or less of assembly.Will be discussed in more detail below the element of mobile terminal.
Wireless communication unit 110 generally includes one or more assembly, and it allows the radio communication between mobile terminal 100 and wireless communication system or network.Such as, wireless communication unit can include at least one in broadcast reception module 111, mobile communication module 112, wireless Internet module 113, short range communication module 114 and positional information module 115.Wireless communication unit 110 is intended to be realized by antenna with outside communication, namely in this programme each embodiment substantially realize scene place.
Broadcast reception module 111 manages server via broadcast channel from external broadcasting and receives broadcast singal and/or broadcast related information.Broadcast channel can include satellite channel and/or terrestrial channel.Broadcast management server can be generate and send the server of broadcast singal and/or broadcast related information or broadcast singal that reception is previously created and/or broadcast related information and send it to the server of terminal.Broadcast singal can include TV broadcast singal, radio signals, data broadcasting signal etc..And, broadcast singal may further include the broadcast singal combined with TV or radio signals.Broadcast related information can also provide via mobile communications network, and in this case, broadcast related information can be received by mobile communication module 112.Broadcast singal can exist in a variety of manners, such as, it can exist with the electronic program guides (EPG) of DMB (DMB), the form of the electronic service guidebooks (ESG) etc. of digital video broadcast-handheld (DVB-H).Broadcast reception module 111 can be passed through to use various types of broadcast systems to receive signal broadcast.Especially, broadcast reception module 111 can be passed through to use such as multimedia broadcasting-ground (DMB-T), DMB-satellite (DMB-S), DVB-hand-held (DVB-H), forward link media (MediaFLO) Radio Data System, received terrestrial digital broadcasting integrated service (ISDB-T) etc. digit broadcasting system receive digital broadcasting.Broadcast reception module 111 may be constructed such that the various broadcast systems and above-mentioned digit broadcasting system that are adapted to provide for broadcast singal.The broadcast singal and/or the broadcast related information that receive via broadcast reception module 111 can be stored in memorizer 160 (or other type of storage medium).
Mobile communication module 112 sends radio signals at least one in base station (such as, access point, node B etc.), exterior terminal and server and/or receives from it radio signal.Such radio signal can include voice call signal, video calling signal or the various types of data sending according to text and/or Multimedia Message and/or receiving.
Wireless Internet module 113 supports the Wi-Fi (Wireless Internet Access) of mobile terminal.This module can internally or externally be couple to terminal.Wi-Fi (Wireless Internet Access) technology involved by this module can include WLAN (WLAN) (Wi-Fi), Wibro (WiMAX), Wimax (worldwide interoperability for microwave access), HSDPA (high-speed downlink packet access) etc..
Short range communication module 114 is the module for supporting junction service.Some examples of short-range communication technology include bluetoothTM, RF identification (RFID), Infrared Data Association (IrDA), ultra broadband (UWB), purple honeybeeTMEtc..
Positional information module 115 is the module of positional information for checking or obtain mobile terminal.The typical case of positional information module is GPS (global positioning system).According to current technology, GPS module 115 calculates from the range information of three or more satellites and correct time information and the Information application triangulation for calculating, thus according to longitude, latitude with highly accurately calculate three-dimensional current location information.Currently, the method for calculating position and temporal information uses three satellites and the error by the position using an other satellite correction to calculate and temporal information.Additionally, GPS module 115 can calculate velocity information by Continuous plus current location information in real time.
User input unit 130 can generate key input data to control the various operations of mobile terminal according to the order of user's input.User input unit 130 allows user to input various types of information, and can include keyboard, metal dome, touch pad (such as, detection due to touched and cause resistance, pressure, electric capacity etc. the sensitive component of change), roller, rocking bar etc..Especially, when touch pad is superimposed upon on display unit 151 as a layer, it is possible to form touch screen.
Interface unit 170 is used as at least one external device (ED) and is connected, with mobile terminal 100, the interface that can pass through.Such as, external device (ED) can include wired or wireless head-band earphone port, external power source (or battery charger) port, wired or wireless FPDP, memory card port, for connecting the port of the device with identification module, audio frequency input/output (I/O) port, video i/o port, ear port etc..Identification module can be that storage is for verifying that user uses the various information of mobile terminal 100 and can include subscriber identification module (UIM), client identification module (SIM), Universal Subscriber identification module (USIM) etc..It addition, the device (hereinafter referred to " identifying device ") with identification module can take the form of smart card, therefore, identify that device can be connected with mobile terminal 100 via port or other connecting device.Interface unit 170 may be used for receiving from the input (such as, data message, electric power etc.) of external device (ED) and the one or more elements being transferred in mobile terminal 100 by the input received or may be used for transmission data between mobile terminal and external device (ED).
Additionally, when mobile terminal 100 is connected with external base, interface unit 170 can serve as and allows to provide the path of mobile terminal 100 or can serve as to allow to be transferred to the path of mobile terminal from the various command signals of base input by it from base electric power by it.May serve as whether identification mobile terminal is accurately fitted within the signal base from the various command signals of base input or electric power.
Output unit 150 is configured to provide output signal (such as, audio signal, video signal, alarm signal, vibration signal etc.) with vision, audio frequency and/or tactile manner.Output unit 150 can include display unit 151, dio Output Modules 152 etc..
Display unit 151 may be displayed on the information processed in mobile terminal 100.Such as, when mobile terminal 100 is in telephone calling model, display unit 151 can show the user interface (UI) relevant with call or other communicate (such as, text messaging, multimedia file download etc.) or graphic user interface (GUI).When being in video calling pattern or image capture mode when mobile terminal 100, display unit 151 can show the image of image and/or the reception caught, UI or GUI illustrating video or image and correlation function etc..
Meanwhile, when display unit 151 and touch pad as a layer superposed on one another to form touch screen time, display unit 151 can serve as input equipment and output device.Display unit 151 can include at least one in liquid crystal display (LCD), thin film transistor (TFT) LCD (TFT-LCD), Organic Light Emitting Diode (OLED) display, flexible display, three-dimensional (3D) display etc..Some in these display may be constructed such that transparence is to allow user to watch from outside, and this is properly termed as transparent display, and typical transparent display can be such as TOLED (transparent organic light emitting diode) display etc..According to the specific embodiment wanted, mobile terminal 100 can include two or more display units (or other display device), such as, mobile terminal can include outernal display unit (not shown) and inner display unit (not shown).Touch screen can be used for detecting touch input pressure and touch input position and touch input area.
Dio Output Modules 152 can mobile terminal be in call signal receive under the isotype such as pattern, call mode, logging mode, speech recognition mode, broadcast reception mode time, that wireless communication unit 110 is received or storage in memorizer 160 voice data transducing audio signal and be output as sound.And, dio Output Modules 152 can provide the audio frequency output (such as, call signal receive sound, message sink sound etc.) relevant to the specific function of mobile terminal 100 execution.Dio Output Modules 152 can include speaker, buzzer etc..
Memorizer 160 can store the process performed by controller 180 and the software program controlling operation etc., or can temporarily store the data (such as, telephone directory, message, still image, video etc.) that oneself maybe will export through output.And, memorizer 160 can store the vibration about the various modes exported when touching and being applied to touch screen and the data of audio signal.
Memorizer 160 can include the storage medium of at least one type, described storage medium includes flash memory, hard disk, multimedia card, card-type memorizer (such as, SD or DX memorizer etc.), random access storage device (RAM), static random-access memory (SRAM), read only memory (ROM), Electrically Erasable Read Only Memory (EEPROM), programmable read only memory (PROM), magnetic storage, disk, CD etc..And, mobile terminal 100 can be connected the network storage device cooperation of the storage function performing memorizer 160 with by network.
Controller 180 generally controls the overall operation of mobile terminal.Such as, controller 180 performs the control relevant to voice call, data communication, video calling etc. and process.It addition, controller 180 can include the multi-media module 1810 for reproducing (or playback) multi-medium data, multi-media module 1810 can construct in controller 180, or it is so structured that separates with controller 180.Controller 180 can perform pattern recognition process, so that the handwriting input performed on the touchscreen or picture drafting input are identified as character or image.
Power subsystem 190 receives external power or internal power under the control of controller 180 and provides the suitable electric power operated needed for each element and assembly.
Various embodiment described herein can to use such as computer software, hardware or its any combination of computer-readable medium to implement.Hardware is implemented, embodiment described herein can pass through to use application-specific IC (ASIC), digital signal processor (DSP), digital signal processing device (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), processor, controller, microcontroller, microprocessor, at least one that is designed to perform in the electronic unit of function described herein to implement, in some cases, such embodiment can be implemented in controller 180.Implementing for software, the embodiment of such as process or function can be implemented with allowing the independent software module performing at least one function or operation.Software code can be implemented by the software application (or program) write with any suitable programming language, and software code can be stored in memorizer 160 and be performed by controller 180.
So far, oneself is through describing mobile terminal according to its function.Below, for the sake of brevity, by the slide type mobile terminal in the various types of mobile terminals describing such as folded form, board-type, oscillating-type, slide type mobile terminal etc. exemplarily.Therefore, the present invention can be applied to any kind of mobile terminal, and is not limited to slide type mobile terminal.
Mobile terminal 100 as shown in Figure 1 may be constructed such that utilization operates via such as wired and wireless communication system and the satellite-based communication system of frame or packet transmission data.
The communication system being wherein operable to according to the mobile terminal of the present invention is described referring now to Fig. 2.
Such communication system can use different air interfaces and/or physical layer.Such as, the air interface used by communication system includes such as frequency division multiple access (FDMA), time division multiple acess (TDMA), CDMA (CDMA) and UMTS (UMTS) (especially, Long Term Evolution (LTE)), global system for mobile communications (GSM) etc..As non-limiting example, as explained below relates to cdma communication system, but such instruction is equally applicable to other type of system.
With reference to Fig. 2, cdma wireless communication system can include multiple mobile terminal 100, multiple base station (BS) 270, base station controller (BSC) 275 and mobile switching centre (MSC) 280.MSC280 is configured to form interface with Public Switched Telephony Network (PSTN) 290.MSC280 is also structured to and the BSC275 formation interface that can be couple to base station 270 via back haul link.Back haul link can construct according to any one in some interfaces that oneself knows, described interface includes such as E1/T1, ATM, IP, PPP, frame relay, HDSL, ADSL or xDSL.It will be appreciated that system as shown in Figure 2 can include multiple BSC2750.
Each BS270 can service one or more subregion (or region), by each subregion of multidirectional antenna or the antenna covering pointing to specific direction radially away from BS270.Or, each subregion can be covered by two or more antennas for diversity reception.Each BS270 may be constructed such that support multiple frequencies distribution, and the distribution of each frequency has specific frequency spectrum (such as, 1.25MHz, 5MHz etc.).
Intersecting that subregion and frequency are distributed can be referred to as CDMA Channel.BS270 can also be referred to as base station transceiver subsystem (BTS) or other equivalent terms.In this case, term " base station " may be used for broadly representing single BSC275 and at least one BS270.Base station can also be referred to as " cellular station ".Or, each subregion of specific BS270 can be referred to as multiple cellular station.
As shown in Figure 2, broadcast singal is sent in system the mobile terminal 100 of operation by broadcsting transmitter (BT) 295.Broadcast reception module 111 as shown in Figure 1 is arranged on mobile terminal 100 and sentences the broadcast singal that reception is sent by BT295.In fig. 2 it is shown that several global positioning systems (GPS) satellite 300.Satellite 300 helps to position at least one in multiple mobile terminals 100.
In fig. 2, depict multiple satellite 300, it is understood that be, it is possible to use any number of satellite obtains useful location information.GPS module 115 as shown in Figure 1 is generally configured to coordinate the location information wanted with acquisition with satellite 300.Substitute GPS tracking technique or outside GPS tracking technique, it is possible to use other technology of the position of mobile terminal can be followed the tracks of.It addition, at least one gps satellite 300 can optionally or additionally process satellite dmb transmission.
As a typical operation of wireless communication system, BS270 receives the reverse link signal from various mobile terminals 100.Mobile terminal 100 generally participates in call, information receiving and transmitting communicates with other type of.Each reverse link signal that certain base station 270 receives is processed in specific BS270.The data obtained are forwarded to relevant BSC275.BSC provides call resource distribution and the mobile management function of the coordination of soft switching process included between BS270.The data received also are routed to MSC280 by BSC275, and it provides the extra route service for forming interface with PSTN290.Similarly, PSTN290 and MSC280 forms interface, and MSC and BSC275 forms interface, and BSC275 correspondingly controls BS270 so that forward link signals to be sent to mobile terminal 100.
Based on above-mentioned mobile terminal hardware configuration and communication system, it is proposed to each embodiment of the present invention.
Refer to Fig. 3, the equivalent circuit theory figure of its a kind of filter antenna device for providing in the specific embodiment of the invention, as it can be seen, this filter antenna device, including:
RLC resonance circuit 20 and at least one LC resonator 10；
Resistance Ra in described RLC resonance circuit 20 is as the Department of Radiation of filter antenna device；
Described LC resonator 10 grades is coupled to the front end of described RLC resonance circuit 20, and radiofrequency signal enters after LC resonator 10 and intercouples with described RLC resonance circuit 20, produces adjacent mode of resonance, energy by Department of Radiation to external radiation.
LC resonator 10 includes an electric capacity and an inductance, for instance in Fig. 1, electric capacity C1 and inductance L1 forms a LC resonator 10；Electric capacity C2 and inductance L2 forms a LC resonator 10.Gs in Fig. 3 represents the drive circuit of antenna, and for controlling transmission and the reception of radiofrequency signal, the hardware configuration of drive circuit is all identical with the type of drive of existing antenna with working method, does not do in-depth explanation at this.
In RLC resonance circuit 20, including a resistance, an inductance and an electric capacity, namely resistance Ra, inductance La and electric capacity Ca in Fig. 3, wherein resistance Ra is exactly radiation resistance, and radiation resistance is that electronic equipment carries out, with extraneous, the element that signal is mutual.
In radio signal transmission process, LC resonator in RLC resonance circuit 20 can intercouple with the LC resonator 10 of front end cascade, producing at least 2 resonant frequencies, energy is then radiate by the resistance Ra in RLC resonance circuit 20, and resistance Ra is in this as equivalent resistance.The LC resonator 10 of cascade is positioned at the side of signal source, and signal enters LC resonator 10, LC resonator 10 from antenna feed point and will produce to intercouple with RLC resonance circuit 20, and adjacent mode of resonance can produce superposition, it is achieved the increase of the beamwidth of antenna.Additionally, whole filter antenna device also has the performance of band filter, the noise signal in passband can be played the effect filtered.It addition, be further boostfiltering effect, it is additionally provided with filter capacitor C0 in the front side of wave filter 10.
Specifically refer to Fig. 4 and Fig. 5, it is reflection coefficient graph of a relation and the radiation characteristic graph of a relation of the filter antenna device provided in the specific embodiment of the invention respectively.Reflection coefficient graph of a relation shown in Fig. 4 is for characterizing the bandwidth of this filter antenna device, return loss and selectivity, wherein the exponent number of ripple depends on the number of LC resonator 10, the number of LC resonator 10 is more many, and the exponent number of ripple is more many, and the bandwidth of the radiofrequency signal that antenna can be launched is more wide.Radiation characteristic graph of a relation shown in Fig. 5 is for characterizing gain and the efficiency of antenna.
In sum, by arranging resonator 10 and RLC resonance circuit 20, resonator 10 is parallel to the mains side of described RLC resonance circuit 20, utilizes the radiation resistance attribute of resistance in RLC resonance circuit 20, using this resistance Department of Radiation as filter antenna device；Aerial signal by after the superposition of the adjacent coupled mode of resonance of resonator 10 and RLC resonance circuit 20 from Department of Radiation to external radiation, the additive process of adjacent coupled mode of resonance, it is achieved that the increase of the beamwidth of antenna.
Preferably, described LC resonator 10 is arranged on printed circuit board (PCB).
Say from circuit theory, one LC resonator 10 includes an electric capacity and an inductance, LC resonator 10 is arranged on printed circuit board (PCB) to be equivalent to couple between ground plane and Department of Radiation, LC resonator 10 is arranged on printed circuit board (PCB) can't produce impact to the adjacent coupled resonance of radiofrequency signal, and can only retain the RLC resonance circuit 20 independent terminals as antenna, reduce the volume of antenna, the existing antenna for mobile phone of solution is faced an increasingly less antenna headroom area difficult problem advantageous particularly.It should be noted that the transmitting-receiving that RLC resonance circuit 20 to realize radiofrequency signal cannot be arranged on a printed circuit, a LC resonator 10 can only be coupled to.
Another kind of preferred mode, described LC resonator 10 is integrated in resonance chip.
Defined herein resonance chip is to be integrated with LC resonator 10 required in the present invention the chip coupled together with identical annexation.Resonance chip directly connects between drive circuit and RLC resonance circuit 20.Further, can realize the more precise control to LC resonator 10, for instance actuator is set in resonance chip, regulate the access number of LC resonator 10.The such as number at the LC resonator 10 being currently accessed is 30 demands to meet a certain radio frequency band, for obtaining the demand of other a certain more low radio frequency frequency range, the number of the LC resonator 10 accessed is reduced；Or for obtaining the demand of other a certain more firing frequency frequency range, the number of the LC resonator 10 accessed is increased.
Wherein, the operating frequency of described LC resonator 10 according toIt is adjusted, wherein ω0Representing the operating frequency of LC resonator 10, L represents the inductance value of inductance in LC resonator 10；C represents the capacitance of electric capacity in LC resonator 10.
The operating frequency of LC resonator 10 is adjustable, it is possible to increase the adaptive capacity of antenna assembly, tackles the launch requirements of various frequency signal.
Wherein, described RLC resonance circuit 20 is realized by Monople antenna, IFA antenna or PIFA antenna.
RLC resonance circuit 20 itself is a kind of equivalent circuit form simply, represents a antenna, and in concrete application, this antenna has multiple antenna form to realize, for instance above-mentioned Monople antenna, IFA antenna or PIFA antenna, specifically deep explanation at this.
It is also preferred that the left RLC resonance circuit 20 and LC resonator 10 possess close resonant frequency, it is possible to allow antenna possess better coupling effect, improve the quality of signal transmission.
Wherein, the underface of described RLC resonance circuit 20 is provided with empty regions.
RLC resonance circuit 20, as antenna energy spoke side, arranges empty regions and can be effectively improved the effect of energy feeding.
The specific embodiment of the invention further provides for the method for adjustment of a kind of beamwidth of antenna.
Refer to Fig. 6, it is the method flow diagram of the method for adjustment of a kind of beamwidth of antenna of offer in the specific embodiment of the invention, as it can be seen, this method of adjustment is for aforesaid filter antenna device, this method of adjustment specifically includes:
S11: the bandwidth according to the electrical length of filter antenna device and demand, calculates the number needing to access the LC resonator of antenna.
The electrical length of filter antenna device is that physical length L is divided by signal wavelength lambda；In conjunction with the bandwidth of demand, interface calculates the number needing to access the resonator of antenna.Generally, the exponent number of ripple as shown in Figure 4, LC resonator the relation of number and bandwidth, the bandwidth of demand is more wide, it is necessary to the number of LC resonator more many.
S12: adjust the access state of described LC resonator, keeping the number accessing the LC resonator of antenna is calculated number.
Adjust the access state of LC resonator, make the number calculated in the number of the LC resonator that cascade between drive circuit with RLC resonance circuit accesses and step S11 identical, and then obtain the bandwidth needed, the break-make of circuit can pass through metal-oxide-semiconductor, relay etc. realize, metal-oxide-semiconductor, relay break-make specifically controlled by controller 180.
Additionally providing a kind of mobile terminal in the specific embodiment of the invention, possess aforesaid filter antenna device, thus also correspondence achieves the increase of the bandwidth of the antenna of mobile terminal.
It should be noted that, in this article, term " includes ", " comprising " or its any other variant are intended to comprising of nonexcludability, so that include the process of a series of key element, method, article or device not only include those key elements, but also include other key elements being not expressly set out, or also include the key element intrinsic for this process, method, article or device.When there is no more restriction, statement " including ... " key element limited, it is not excluded that there is also other identical element in including the process of this key element, method, article or device.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art is it can be understood that can add the mode of required general hardware platform by software to above-described embodiment method and realize, hardware can certainly be passed through, but in a lot of situation, the former is embodiment more preferably.Based on such understanding, the part that prior art is contributed by technical scheme substantially in other words can embody with the form of software product, this computer software product is stored in a storage medium (such as ROM/RAM, magnetic disc, CD), including some instructions with so that a station terminal equipment (can be mobile phone, computer, server, air-conditioner, or the network equipment etc.) perform the method described in each embodiment of the present invention.
For illustrative purposes, description above employs specific term, to provide thorough understanding of the present invention.It will be apparent, however, to one skilled in the art, that be not required to concrete details to put into practice the present invention.The described above of specific embodiments of the invention is to present for purposes of illustration and description.They are not intended to detailed or limit the invention to disclosed precise forms.In view of religious doctrine above, many modifications and variations are possible.These embodiments are illustrate and described, so that others skilled in the art can utilize the present invention best and have the various embodiments of the various amendments being suitable to intended specific use in order to explain principles of the invention and practical application thereof best.It is intended to the scope of the present invention limited by following claims and its equivalent.
Claims (10)
1. a filter antenna device, it is characterised in that including:
RLC resonance circuit and at least one LC resonator；
Resistance in described RLC resonance circuit is as the Department of Radiation of filter antenna device；
Described LC resonator stages is coupled to the front end of described RLC resonance circuit, and radiofrequency signal enters after described LC resonator and intercouples with described RLC resonance circuit, produces adjacent mode of resonance, energy by Department of Radiation to external radiation.
2. filter antenna device according to claim 1, it is characterised in that described resonator is arranged on printed circuit board (PCB).
3. filter antenna device according to claim 1, it is characterised in that described resonator is integrated in resonance chip.
4. filter antenna device according to claim 3, it is characterised in that be additionally provided with the actuator of access number for regulating described resonator in described resonance chip.
5. filter antenna device according to claim 1, it is characterised in that electric capacity and the inductance of described LC resonator are adjustable.
6. filter antenna device according to claim 5, it is characterised in that the operating frequency of described LC resonator according toIt is adjusted, wherein ω0Representing the operating frequency of LC resonator, L represents the inductance value of inductance in LC resonator；C represents the capacitance of electric capacity in LC resonator.
7. filter antenna device according to claim 1, it is characterised in that described RLC resonance circuit is realized by Monople antenna, IFA antenna or PIFA antenna.
8. filter antenna device according to claim 1, it is characterised in that the underface of described RLC resonance circuit is provided with empty regions.
9. a method of adjustment for the beamwidth of antenna, the filter antenna device described in any one of claim 1～8, it is characterised in that including:
Electrical length according to filter antenna device and the bandwidth of demand, calculate the number needing to access the resonator of antenna；
Adjusting the access state of described resonator, keeping the number accessing the resonator of antenna is calculated number.
10. a mobile terminal, it is characterised in that include the filter antenna device described in any one of claim 1～8.
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| CN201610103733.7A CN105789840A (en) | 2016-02-25 | 2016-02-25 | Filtering antenna apparatus, adjustment method for antenna bandwidth, and mobile terminal |
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| CN201610103733.7A CN105789840A (en) | 2016-02-25 | 2016-02-25 | Filtering antenna apparatus, adjustment method for antenna bandwidth, and mobile terminal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110444893A (en) * | 2019-08-16 | 2019-11-12 | 歌尔科技有限公司 | A kind of unipole antenna bandwidth adjusting method and system |
| CN112234359A (en) * | 2020-09-17 | 2021-01-15 | 南京理工大学 | Reflection/absorption surface for terminating filter circuit to control electrical characteristics and design method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070149159A1 (en) * | 2005-12-23 | 2007-06-28 | Hiroyuki Kayano | Filter circuit and radio communication system comprising filter |
| CN101536309A (en) * | 2006-11-17 | 2009-09-16 | 诺基亚公司 | An apparatus for enabling two elements to share a common feed |
| CN103346404A (en) * | 2013-06-28 | 2013-10-09 | 无锡创元电子科技有限公司 | Resonant type broadband short-wave antenna |
| CN104078752A (en) * | 2014-06-23 | 2014-10-01 | 芜湖航飞科技股份有限公司 | Vehicle-mounted short-wave communication antenna |
| CN104852146A (en) * | 2014-02-14 | 2015-08-19 | 神讯电脑(昆山)有限公司 | Multifrequency antenna module and self adjusting method thereof |
-
2016
- 2016-02-25 CN CN201610103733.7A patent/CN105789840A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070149159A1 (en) * | 2005-12-23 | 2007-06-28 | Hiroyuki Kayano | Filter circuit and radio communication system comprising filter |
| CN101536309A (en) * | 2006-11-17 | 2009-09-16 | 诺基亚公司 | An apparatus for enabling two elements to share a common feed |
| CN103346404A (en) * | 2013-06-28 | 2013-10-09 | 无锡创元电子科技有限公司 | Resonant type broadband short-wave antenna |
| CN104852146A (en) * | 2014-02-14 | 2015-08-19 | 神讯电脑(昆山)有限公司 | Multifrequency antenna module and self adjusting method thereof |
| CN104078752A (en) * | 2014-06-23 | 2014-10-01 | 芜湖航飞科技股份有限公司 | Vehicle-mounted short-wave communication antenna |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110444893A (en) * | 2019-08-16 | 2019-11-12 | 歌尔科技有限公司 | A kind of unipole antenna bandwidth adjusting method and system |
| CN112234359A (en) * | 2020-09-17 | 2021-01-15 | 南京理工大学 | Reflection/absorption surface for terminating filter circuit to control electrical characteristics and design method |
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