CN213401538U - Antenna device and electronic equipment - Google Patents

Abstract

The application provides an antenna device and electronic equipment, antenna device has at least one resonant frequency, antenna device includes the antenna, connect ground plane and first variable impedance circuit between the first point of antenna, and connect in the second variable impedance circuit of the second point of antenna, wherein: the first point of the antenna and the second point of the antenna are separated along a length of the antenna; the second variable impedance circuit is connected to the feed source and to the first variable impedance circuit. The antenna device and the electronic equipment provided by the application can be used for communicating two groups of variable impedance circuits so as to establish more tuning states and realize a wider range of operation resonant frequency.

Description

Antenna device and electronic equipment

Technical Field

The present invention relates to the field of wireless communications, and in particular, to an antenna device and an electronic apparatus.

Background

In wireless communication technology, general services all want wider transmission bandwidth. For this reason, carrier aggregation is a comparatively optimized solution. Carrier aggregation allows for the expansion of the effective bandwidth by the concurrent use of frequency band resources across multiple carriers.

In using multiple frequency bands and a wide frequency bandwidth, the antenna apparatus uses two sets of variable impedance circuits. However, two independent variable impedance circuits cannot be interconnected, and more tuning states cannot be established.

The foregoing description is provided for general background information and is not admitted to be prior art.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to provide an antenna device and an electronic apparatus, which can communicate two sets of variable impedance circuits to establish more tuning states.

In a first aspect, the present application provides an antenna arrangement, in particular an antenna arrangement having at least one resonant frequency, comprising an antenna, a first variable impedance circuit connected between a ground plane and a first point of the antenna, and a second variable impedance circuit connected to a second point of the antenna, wherein: the first point of the antenna and the second point of the antenna are separated along a length of the antenna; the second variable impedance circuit is connected to the feed source and to the first variable impedance circuit.

Optionally, the second variable impedance circuit is connected in parallel with the feed to a second point of the antenna and between the ground plane and the second point of the antenna.

Optionally, the first variable impedance circuit comprises a first switching device and a first tuning unit; the first switch device is connected with the first tuning unit and used for changing the connection state between the first tuning unit and the antenna.

Optionally, the first switching device has a plurality of configurations, the first tuning element has a plurality of branches, different configurations of the first switching device connect different first tuning elements to the antenna.

Optionally, the first switching device comprises a first terminal and a second terminal connected to each other, wherein: the first terminal is connected to the first point of the antenna; the second terminal is switchably connected to one branch of the first tuning unit.

Optionally, the second variable impedance circuit comprises a second switching device and a second tuning unit; the second switch device is connected with the second tuning unit and used for changing the connection state between the second tuning unit and the antenna.

Optionally, the second switching device has a plurality of configurations, the second tuning element has a plurality of branches, and different configurations of the second switching device connect different second tuning elements to the antenna.

Optionally, the second switching device comprises a first terminal and a second terminal connected to each other, wherein: the first terminal is connected to the second point of the antenna; the second terminal is switchably connected to one branch of the second tuning unit.

Optionally, the antenna device further comprises a third variable impedance circuit, the third variable impedance circuit being connected in series to one of the branches of the second variable impedance circuit.

Optionally, the first variable impedance circuit comprises a continuously variable tuning unit.

Optionally, the impedance of the first variable impedance circuit is controlled by varying the continuously variable tuning unit.

Optionally, the second variable impedance circuit comprises a continuously variable tuning unit.

Optionally, the impedance of the second variable impedance circuit is controlled by varying the continuously variable tuning unit.

Optionally, the antenna device comprises a processor connected to the antenna, the processor being configured to receive communication information directly or indirectly from the antenna and to generate a control signal to adjust the impedance of the first variable impedance circuit and/or the second variable impedance circuit according to the communication information.

Optionally, the antenna device comprises a coupler connected between the antenna and the processor for providing the communication information from the antenna to the processor.

Optionally, the first variable impedance circuit includes a first tuning unit, the second variable impedance circuit includes a second tuning unit, and a connection point on the first tuning unit is connected to a connection point on the second tuning unit.

Optionally, the connection of the first variable impedance circuit to the second variable impedance circuit has an impedance characteristic.

Optionally, the antenna is selected from an F antenna, a loop antenna, and a PIFA antenna.

Optionally, the antenna has an impedance characteristic.

In a second aspect, the present application also provides a communication module, in particular, a communication module comprising an antenna device as described above.

In a third aspect, the present application also provides an electronic device, in particular, comprising an antenna device as described above.

The antenna device, the communication module and the electronic equipment provided by the application can be used for communicating two groups of variable impedance circuits so as to establish more tuning states.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic hardware structure diagram of a mobile terminal implementing various embodiments of the present application;

fig. 2 is a block diagram of an antenna apparatus according to an embodiment of the present application;

fig. 3 is a schematic diagram of an antenna device according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a switching device configuration according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a switching device configuration according to another embodiment of the present application;

fig. 6 is a schematic diagram of an antenna device according to another embodiment of the present application;

fig. 7 is a schematic view of an antenna device according to another embodiment of the present application;

fig. 8 is a block diagram of an antenna apparatus according to another embodiment of the present application.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

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, the recitation of an element by the phrase "comprising an … …" does not exclude the presence of additional like elements in the process, method, article, or apparatus that comprises the element, and further, where similarly-named elements, features, or elements in different embodiments of the disclosure may have the same meaning, or may have different meanings, that particular meaning should be determined by their interpretation in the embodiment or further by context with the embodiment.

It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope herein. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context. Also, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used in this specification, specify the presence of stated features, steps, operations, elements, components, items, species, and/or groups, but do not preclude the presence, or addition of one or more other features, steps, operations, elements, components, species, and/or groups thereof. The terms "or" and/or "as used herein are to be construed as inclusive or meaning any one or any combination. Thus, "A, B or C" or "A, B and/or C" means "any of the following: a; b; c; a and B; a and C; b and C; A. b and C ". An exception to this definition will occur only when a combination of elements, functions, steps or operations are inherently mutually exclusive in some way.

It should be understood that, although the steps in the flowcharts in the embodiments of the present application are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, in different orders, and may be performed alternately or at least partially with respect to other steps or sub-steps of other steps.

It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for the convenience of description of the present application, and have no specific meaning in themselves. Thus, "module", "component" or "unit" may be used mixedly.

The electronic device may be implemented in various forms. For example, the electronic devices described in the present application may include mobile terminals such as a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, a wearable device, a smart band, a pedometer, and the like, and fixed terminals such as a Digital TV, a desktop computer, and the like.

The following description will be given taking a mobile terminal as an example, and it will be understood by those skilled in the art that the configuration according to the embodiment of the present application can be applied to a fixed type terminal in addition to elements particularly used for mobile purposes.

Referring to fig. 1, which is a schematic diagram of a hardware structure of a mobile terminal for implementing various embodiments of the present application, the mobile terminal 100 may include: RF (Radio Frequency) unit 101, WiFi module 102, audio output unit 103, a/V (audio/video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. Those skilled in the art will appreciate that the mobile terminal architecture shown in fig. 1 is not intended to be limiting of mobile terminals, which may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

The following describes each component of the mobile terminal in detail with reference to fig. 1:

the radio frequency unit 101 may be configured to receive and transmit signals during information transmission and reception or during a call, and specifically, receive downlink information of a base station and then process the downlink information to the processor 110; in addition, the uplink data is transmitted to the base station. Typically, radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 can also communicate with a network and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System for Mobile communications), GPRS (General Packet Radio Service), CDMA2000(Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division duplex Long Term Evolution), and TDD-LTE (Time Division duplex Long Term Evolution).

WiFi belongs to short-distance wireless transmission technology, and the mobile terminal can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the WiFi module 102, and provides wireless broadband internet access for the user. Although fig. 1 shows the WiFi module 102, it is understood that it does not belong to the essential constitution of the mobile terminal, and may be omitted entirely as needed within the scope not changing the essence of the invention.

The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output as sound when the mobile terminal 100 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 unit 103 may also 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 unit 103 may include a speaker, a buzzer, and the like.

The a/V input unit 104 is used to receive audio or video signals. The a/V input Unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042, the Graphics processor 1041 Processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphic processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 may receive sounds (audio data) via the microphone 1042 in a phone call mode, a recording mode, a voice recognition mode, or the like, and may be capable of processing 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 radio frequency unit 101 in case of a phone call mode. The microphone 1042 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 mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that may optionally adjust the brightness of the display panel 1061 according to the brightness of ambient light, and a proximity sensor that may turn off the display panel 1061 and/or the backlight when the mobile terminal 100 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the gesture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer gesture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.

The display unit 106 is used to display information input by a user or information provided to the user. The Display unit 106 may include a Display panel 1061, and the Display panel 1061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 107 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the mobile terminal. Specifically, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also referred to as a touch screen, may collect a touch operation performed by a user on or near the touch panel 1071 (e.g., an operation performed by the user on or near the touch panel 1071 using a finger, a stylus, or any other suitable object or accessory), and drive a corresponding connection device according to a predetermined program. The touch panel 1071 may include two parts of a touch detection device and a touch controller. Optionally, the touch detection device detects a touch orientation of a user, detects a signal caused by a touch operation, and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 110, and can receive and execute commands sent by the processor 110. In addition, the touch panel 1071 may be implemented in various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may include other input devices 1072. In particular, other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like, and are not limited to these specific examples.

Further, the touch panel 1071 may cover the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or nearby, the touch panel 1071 transmits the touch operation to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of the touch event. Although the touch panel 1071 and the display panel 1061 are shown in fig. 1 as two separate components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the mobile terminal, and is not limited herein.

The interface unit 108 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 interface unit 108 may be used to receive input (e.g., data information, power, etc.) from external devices 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 100 and external devices.

The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a program storage area and a data storage area, and optionally, the program storage area may store an operating system, an application program (such as a sound playing function, an image playing function, and the like) required by at least one function, and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 109 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 110 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by operating or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor and a modem processor, optionally, the application processor mainly handles operating systems, user interfaces, application programs, etc., and the modem processor mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.

The mobile terminal 100 may further include a power supply 111 (e.g., a battery) for supplying power to various components, and preferably, the power supply 111 may be logically connected to the processor 110 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system.

Although not shown in fig. 1, the mobile terminal 100 may further include a bluetooth module or the like, which is not described in detail herein.

Based on the above mobile terminal hardware structure, various embodiments of the present application are provided.

The following detailed description of embodiments of the present application will be described in conjunction with the accompanying drawings and examples. The following examples are intended to illustrate the present application but are not intended to limit the scope of the present application.

In a first aspect, the present application provides an antenna arrangement. Fig. 2 is a block diagram of an antenna apparatus according to an embodiment of the present application.

As shown in fig. 2, in an embodiment, the antenna device includes an antenna 1, a first variable impedance circuit 3, and a second variable impedance circuit 5. The antenna device has at least one resonant frequency.

Wherein the antenna 1 comprises a radiating element. In an embodiment, the antenna 1 comprises a single radiating element. In another embodiment, the antenna 1 comprises a plurality of radiating elements connected or coupled together.

The first point 11 of the antenna 1 and the second point 12 of the antenna 1 are separated along the length of the antenna 1. The antenna 1 has an impedance characteristic and the antenna arrangement has at least one resonance frequency.

The first variable impedance circuit 3 is connected between the ground plane and a first point 11 of the antenna 1 for tuning the antenna arrangement. By controlling the impedance of the first variable impedance circuit 3 by means of the first control signal, the antenna device can be tuned to operate at a specific frequency resonance.

A second variable impedance circuit 5 is connected between the second point 12 of the antenna 1 and the feed F for tuning the antenna arrangement. By controlling the impedance of the second variable impedance circuit 5 by means of the second control signal, the antenna device can be tuned to operate at a specific frequency resonance.

As shown in fig. 2, a second variable impedance circuit 5 is connected in parallel with the feed F. In another embodiment, the second variable impedance circuit 5 may be connected in series between the feed F and the second point 12 of the antenna 1. In other embodiments, a portion of the second variable impedance circuit 5 is connected in parallel with the feed F, and another portion of the second variable impedance circuit 5 is connected in series with the feed F.

With reference to fig. 2, the first variable impedance circuit 3 is directly connected to the second variable impedance circuit 5. The impedance of the tuning unit can be adjusted more flexibly by the impedance joint control of the first variable impedance circuit 3 and the second variable impedance circuit 5, so as to further expand the frequency range of the resonance of the antenna device.

The two groups of variable impedance circuits are directly connected and are communicated with each other to establish more tuning states and realize a wider range of operation resonant frequency.

Fig. 3 is a schematic connection diagram of an antenna device according to an embodiment of the present application.

As shown in fig. 3, in an embodiment, the first variable impedance circuit 3 includes a first switching device 30 and a first tuning unit 31; the first switching device 30 is connected to the first tuning unit 31 for changing a connection state between the first tuning unit 31 and the antenna 1.

By changing the connection state between the first tuning unit 31 and the antenna 1 by the first switching device 30, the impedance of the first variable impedance circuit 3 can be controlled to tune the antenna apparatus to operate at a specific frequency resonance.

In case the first tuning unit 31 has one branch, the first switching device 30 has two states, on and off. In case the first tuning unit 31 has a plurality of branches, the first switching device 30 may also have a plurality of different states. In an embodiment, the first switching device 30 has a plurality of configurations, the first tuning element 31 has a plurality of branches, and different configurations of the first switching device 30 may connect different first tuning elements 31 to the antenna 1.

Fig. 4 is a schematic diagram of a switching device according to an embodiment of the present application. Fig. 5 is a schematic diagram of a switching device according to another embodiment of the present application.

Referring to fig. 4, the switching device includes a first terminal 401 and a second terminal 402 connected to each other, wherein: the first terminal 401 is connected to a point of the antenna; the second terminal 402 allows the first terminal 401 to switchably communicate with one branch of the tuning unit. Referring to fig. 5, in another embodiment, since the switching device internally includes a plurality of independent switches, the second terminal 402 of the switching device may be controlled to allow the first terminal 401 to simultaneously communicate with a plurality of branches of the tuning unit.

Thus, referring to fig. 3, fig. 4 and fig. 5 simultaneously, in an embodiment, the first switching device 30 includes a first terminal and a second terminal connected to each other, wherein: the first terminal is connected to a first point 11 of the antenna 1; the second terminal is switchably connected to one branch of the first tuning unit 31. In another embodiment, the second terminal of the first switching device 30 may be connected to a plurality of branches of the first tuning unit 31 at the same time.

By changing the connection state of the plurality of branches of the first tuning unit 31 by the first switching device 30, the impedance of the first variable impedance circuit 3 can be changed to tune the antenna apparatus to operate at a specific frequency resonance.

Referring to fig. 3, in an embodiment, the second variable impedance circuit 5 includes a second switching device 50 and a second tuning unit 51; the second switching device 50 is connected to the second tuning unit 51 for changing the connection state between the second tuning unit 51 and the antenna 1.

By changing the connection state between the second tuning unit 51 and the antenna 1 by the second switching device 50, the impedance of the second variable impedance circuit 5 can be controlled to tune the antenna apparatus to operate at a specific frequency resonance.

In case the second tuning unit 51 has one branch, the second switching device 50 has two states, on and off. In case the second tuning unit 51 has a plurality of branches, the second switching device 50 may also have a plurality of different states. In an embodiment the second switching device 50 has a plurality of configurations, the second tuning element 51 has a plurality of branches, different configurations of the second switching device 50 connect different second tuning elements 51 to the antenna 1.

Referring to fig. 3, 4 and 5, in one embodiment, the second switching device 50 includes a first terminal and a second terminal connected to each other, wherein: the first terminal is connected to the second point 12 of the antenna 1; the second terminal is switchably connected to one branch of the second tuning unit 51. In another embodiment, the second terminal of the second switching device 50 may be connected to a plurality of branches of the second tuning unit 51 at the same time.

By changing the connection state of the plurality of branches of the second tuning unit 51 by the second switching device 50, the impedance of the second variable impedance circuit 5 can be changed to tune the antenna apparatus to operate at a specific frequency resonance.

It should be noted that the first switching device and the second switching device may be various switching devices commonly used in semiconductor switches, mechanical switches, relays, and the like, and the present application is not limited thereto.

Fig. 6 is a schematic connection diagram of an antenna device according to another embodiment of the present application.

As shown in fig. 6, in an embodiment, the first variable impedance circuit 3 includes a first continuously variable tuning unit 32. The continuously variable tuning unit has a more linear frequency modulation characteristic. The impedance of the first variable impedance circuit 3 may be varied, for example by controlling a continuously variable tuning unit in the first tuning unit 31 and/or the second tuning unit 51, to linearly tune the antenna device to operate at a particular frequency resonance.

In an embodiment, the impedance of the first variable impedance circuit 3 is controlled by varying the continuously variable tuning unit. The impedance of the first variable impedance circuit 3 is directly varied, for example by controlling a variable capacitance and/or a variable inductance, to tune the antenna device to operate at a particular frequency resonance.

Referring to fig. 6, in an embodiment, the second variable impedance circuit 5 includes a second continuously variable tuning unit 52. The continuously variable tuning unit has a more linear frequency modulation characteristic. The impedance of the first variable impedance circuit 3 may be varied, for example by controlling a continuously variable tuning unit in the first tuning unit 31 and/or the second tuning unit 51, to linearly tune the antenna device to operate at a particular frequency resonance.

In an embodiment, the impedance of the second variable impedance circuit 5 is controlled by varying the continuously variable tuning unit. The impedance of the first variable impedance circuit 3 is varied, for example by control of a variable capacitance and/or variable inductance, to tune the antenna arrangement to operate at a particular frequency resonance.

In one embodiment, the first variable impedance circuit 3 includes a first tuning unit 31, the second variable impedance circuit 5 includes a second tuning unit 51, and a connection point on the first tuning unit 31 is connected to a connection point on the second tuning unit 51.

The two groups of variable impedance circuits are directly connected and are communicated with each other to establish more tuning states and realize a wider range of operation resonant frequency.

In one embodiment, the connection between the first variable impedance circuit 3 and the second variable impedance circuit 5 has an impedance characteristic, which satisfies the characteristic impedance requirement of the transmission line.

Fig. 7 is a schematic connection diagram of an antenna device according to another embodiment of the present application.

As shown in fig. 7, in an embodiment, the antenna device comprises a third variable impedance circuit 2.

In an embodiment, the third variable impedance circuit 2 is connected in series to one of the branches of the second tuning unit 51. In another embodiment, the multiple branches of the second tuning unit 51 may be connected in series with a variable impedance circuit. In other embodiments, each branch of each variable impedance circuit in series can be connected to other variable impedance circuits in series according to circuit requirements, so as to increase the adjustability of the circuit.

With continued reference to fig. 7, in an embodiment, the third variable impedance circuit 2 includes a third switching device 20 and a third tuning unit 21. The third switching device 20 is connected to the third tuning unit 21 for changing the connection state between the third tuning unit 21 and the second variable impedance circuit 5.

By changing the connection state between the third tuning unit 21 and the second variable impedance circuit 5 through the third switching device 20, the impedance of the third variable impedance circuit 2 can be controlled to tune the antenna apparatus to operate at a specific frequency resonance.

In case the third tuning unit 21 has one branch, the third switching device 20 has two states, on and off. In case the third tuning unit 21 has multiple branches, the third switching device 20 may also have multiple different states. In an embodiment, the third switching device 20 has a plurality of configurations, the third tuning unit 21 has a plurality of branches, and different configurations of the third switching device 20 may connect different third tuning units 21 to the second variable impedance circuit 5.

Similarly, in an embodiment, each branch of the first variable impedance circuit 3 may be further connected in series with other variable impedance circuits in sequence according to circuit requirements, so as to increase the adjustability of the circuit.

Fig. 8 is a block diagram of an antenna apparatus according to another embodiment of the present application.

As shown in fig. 8, in an embodiment the antenna arrangement comprises a processor 7 connected to the antenna 1.

The processor 7 is configured to receive communication information directly or indirectly from the antenna 1 and to generate a control signal to adjust the impedance of the first variable impedance circuit 3 and/or the second variable impedance circuit 5 based on the communication information. Each impedance value in the first variable impedance circuit 3 and/or the second variable impedance circuit 5 is determined in accordance with at least one control signal.

With continued reference to fig. 8, in one embodiment, the antenna device includes a coupler 9.

A coupler 9 is connected between the antenna 1 and the processor 7 for providing communication information from the antenna 1 to the processor 7. The communication information may comprise a return loss or signal strength indication of the antenna 1. The coupler 9 may be arranged at any location of the communication module comprising the antenna device. The coupler 9 may be located on the antenna 1 or on the housing of a mobile phone, for example.

In an embodiment, the antenna 1 is an F-antenna. In other embodiments, the antenna 1 may also be a PIFA antenna or a loop antenna.

In a second aspect, the present application also provides a communication module, in particular, a communication module comprising an antenna device as described above. The manner of implementing the communication module to extend the resonance frequency in a wider range is consistent with the above embodiments, and is not described herein again.

In a third aspect, the present application also provides an electronic device, in particular, comprising an antenna device as described above. For the way of implementing the expansion of the resonance frequency in a wider range, please refer to the above embodiments, which are not described herein again.

The antenna device, the communication module and the electronic equipment provided by the application can be used for communicating two groups of variable impedance circuits so as to establish more tuning states and realize a wider range of operation resonant frequency.

In this document, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms can be understood in a specific case to those of ordinary skill in the art.

As used herein, the ordinal adjectives "first", "second", etc., used to describe an element are merely to distinguish between similar elements and do not imply that the elements so described must be in a given sequence, either temporally, spatially, in ranking, or in any other manner.

As used herein, the meaning of "a plurality" or "a plurality" is two or more unless otherwise specified.

It will be understood by those skilled in the art that all or part of the steps of implementing the above method embodiments may be implemented by hardware associated with program instructions, and the program may be stored in a computer readable storage medium, and when executed, performs the steps including the above method embodiments. The foregoing storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above description is only a specific embodiment of the present application, but the scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions in the technical scope disclosed in the present application, and all the changes or substitutions are covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (16)

1. An antenna arrangement having at least one resonant frequency, the antenna arrangement comprising an antenna, a first variable impedance circuit connected between a ground plane and a first point of the antenna, and a second variable impedance circuit connected to a second point of the antenna, wherein:

the first point of the antenna and the second point of the antenna are separated along a length of the antenna;

the second variable impedance circuit is connected to the feed source and to the first variable impedance circuit.

2. The antenna assembly of claim 1 wherein the second variable impedance circuit is connected in parallel with the feed to the second point of the antenna and between the ground plane and the second point of the antenna.

3. The antenna apparatus of claim 1, wherein the first variable impedance circuit includes a first switching device and a first tuning unit;

the first switch device is connected with the first tuning unit and used for changing the connection state between the first tuning unit and the antenna.

4. The antenna arrangement of claim 3, wherein the first switching device has a plurality of configurations, the first tuning element has a plurality of branches, different configurations of the first switching device connecting different first tuning elements to the antenna.

5. The antenna apparatus of claim 4, wherein the first switching device comprises a first terminal and a second terminal connected to each other, wherein:

the first terminal is connected to the first point of the antenna;

the second terminal is switchably connected to one branch of the first tuning unit.

6. The antenna device according to any one of claims 1 to 5, wherein the second variable impedance circuit includes a second switching device and a second tuning unit;

the second switching device is connected to the second tuning unit for changing a connection state between the second tuning unit and the antenna, the second switching device has a plurality of configurations, the second tuning unit has a plurality of branches, and different configurations of the second switching device connect different second tuning units to the antenna.

7. The antenna apparatus of claim 6, wherein the second switching device comprises a first terminal and a second terminal connected to each other, wherein:

the first terminal is connected to the second point of the antenna;

the second terminal is switchably connected to one branch of the second tuning unit.

8. The antenna device of claim 6, further comprising a third variable impedance circuit connected in series to one of the branches of the second tuning element.

9. The antenna device according to any of claims 1 to 5, wherein the first variable impedance circuit comprises a continuously variable tuning unit, the impedance of the first variable impedance circuit being controlled by varying the continuously variable tuning unit.

10. The antenna device according to any of claims 1 to 5, wherein the second variable impedance circuit comprises a continuously variable tuning unit, the impedance of the second variable impedance circuit being controlled by varying the continuously variable tuning unit.

11. An antenna arrangement according to any of claims 1 to 5, wherein the antenna arrangement comprises a processor connected to the antenna for receiving communication information directly or indirectly from the antenna and for generating a control signal to adjust the impedance of the first and/or second variable impedance circuit in dependence on the communication information.

12. The antenna apparatus of claim 11, wherein the antenna apparatus includes a coupler connected between the antenna and the processor for providing the communication information from the antenna to the processor.

13. The antenna device according to any of claims 1 to 5, wherein the first variable impedance circuit comprises a first tuning element and the second variable impedance circuit comprises a second tuning element, and wherein a connection point on the first tuning element is connected to a connection point on the second tuning element.

14. The antenna device according to any of claims 1 to 5, wherein a connection of the first variable impedance circuit and the second variable impedance circuit has an impedance characteristic.

15. The antenna device as claimed in any one of claims 1 to 5, wherein the antenna is selected from the group consisting of an F-antenna, a loop antenna and a PIFA antenna, the antenna having impedance characteristics.

16. An electronic device, characterized in that it comprises an antenna device according to any one of claims 1 to 15.

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