TWM452476U - Adjustable antenna module - Google Patents

Description

Adjustable antenna module

The present invention relates to an antenna, and more particularly to an adjustable antenna module.

With the development of wireless communication technology, users can use wireless communication systems for information transmission without the limitation of terrain, making electronic products using wireless communication technologies, such as Notebook Computer, mobile phones, personal digital assistants (Personal Digital Assistant). The number and types of portable electronic devices such as PDAs are increasing day by day, and the antenna for transmitting and receiving electromagnetic signals becomes one of the most important components in wireless communication devices.

Taking a notebook computer as an example, in order to respond to the current consumer purchase trend, the notebook computers seen on the market are designed and developed toward slimming. Therefore, the size of the antenna for transmitting and receiving wireless electromagnetic wave signals must be relatively reduced in size or changed in structure, so that the antenna can be smoothly disposed in a limited space inside the notebook computer.

In general, antennas are roughly classified into Planar Inverted-F Antenna (PIFA), Monopole Antenna, and Loop Antenna. The existing protocols used in the field of communications are GSM850 and GSM900. , DCS1800, PCS1900, WCDMA2000, etc. However, although the above various antennas can be smoothly loaded in a portable electronic device with a small size, the antenna cannot be multi-frequency transmitted and received because the antenna is reduced in size or changed in shape.

Currently accessed by high speed download packet (High Speed Download Packet Access, HSDA), commonly known as the 3.5th generation (3.5G) communication technology, is gradually entering the fourth generation (4G) communication technology, and Long Term Evolution (LTE) is a high-profile new generation in the market. Mobile wireless broadband technology, and has become the technology of choice in the field of 4G communications. However, the various types of antenna devices that are conventionally used only have the functions of transmitting/receiving electromagnetic signals by dual-frequency transmission or transmission, and cannot meet the communication frequency band of the current 4G communication field, and are still limited in use.

In view of the above problems, the present invention provides an adjustable antenna module, so that the antenna has the capability of multi-frequency transmission and reception to meet the needs of today's 4G low-frequency communication technology.

The adjustable antenna module disclosed in the present invention comprises a grounding portion, a radiating line, a short circuit, a parasitic line, a frequency adjusting unit and a control element. The radiation line has a first portion, a second portion and a third portion, one end of the first portion is connected to the second portion, and the other end of the first portion has a feeding portion, and one end of the second portion is connected to one end of the third portion, The other ends of the two portions and the other end of the third portion are respectively a first radiating end and a second radiating end, and a frequency band range of the first radiating end and a frequency band range of the second radiating end are different from each other. The short circuit is located at one side of the feeding portion, and the two ends of the short circuit are respectively connected to the feeding portion and the ground portion, and the middle of the short circuit has a curved structure.

The parasitic line has a fourth portion and a fifth portion, one end of the fourth portion is connected to one end of the fifth portion, and the second portion is adjacent to the other side of the feeding portion, and the other end of the fourth portion is connected to the ground portion, and the second portion The other end of the five parts has a third radiating end, The frequency band range of the third radiation end is different from the frequency band range of the first radiation end and the second radiation end. The frequency adjustment unit is disposed adjacent to the first radiation end and connected to the ground. The control component is connected to the frequency control unit and the digital control circuit for receiving a frequency control signal through the digital control line, and accordingly generating a plurality of control signals to control the area of the frequency control unit.

In an embodiment, the adjustable antenna module further includes a substrate. The grounding portion, the radiating line, the short circuit, the parasitic line, the frequency adjusting unit and the control element are formed on the substrate.

In an embodiment, the grounding portion is a metal foil, and the curved structure has a U-shape or a horseshoe shape.

In an embodiment, the aforementioned frequency control unit includes a plurality of frequency control elements and a plurality of switching elements. The frequency control element is disposed adjacent to the first radiation end. One of the switching elements is connected between the grounding portion and one of the frequency regulating elements, and the remaining switching element is connected between one of the frequency regulating elements and the remaining frequency regulating element.

In an embodiment, the frequency control component is a metal circuit, and the foregoing switching component is a component of a radio frequency switch or the like.

In an embodiment, the aforementioned control element includes a digital control circuit and a conversion circuit. The digital control circuit is connected to the digital control circuit for receiving the frequency control signal and converting the frequency control signal into a logic control signal. The conversion circuit is connected to the digital control circuit and the switching component for converting the logic control signal into a control signal to control the conduction and non-conduction of the switching element, thereby adjusting the area of the frequency control component.

In an embodiment, the aforementioned digital control circuit is a microprocessor or an active component Synthesized logic circuit.

In an embodiment, the aforementioned conversion circuit is composed of an active component and a passive component.

In one embodiment, the aforementioned digital control line is a general purpose input/output bus, an internal integrated circuit bus, a universal asynchronous transceiver bus, or a serial peripheral bus.

Another adjustable antenna module disclosed in the present invention includes a grounding portion, a radiating line, a parasitic line, a frequency adjusting unit and a control element. The radiation circuit of the patent has a first portion, a second portion and a third portion. One end of the first portion is connected to the second portion, and the other end of the first portion has a feeding portion, and one end of the second portion is connected to the third portion. One end, the third portion has a curved structure, and the other end of the second portion and the other end of the third portion are respectively a first radiating end and a second radiating end, and the frequency band range of the first radiating end and the frequency band range of the second radiating end are not mutually the same.

The parasitic line has a fourth portion, one end of the fourth portion is adjacent to one end of the second portion, and the other end of the fourth portion has a third radiating end, wherein the frequency band of the third radiating end is different from the first radiating end and the second radiating end The frequency bands of the ends are different from each other. The frequency control unit is disposed adjacent to the third radiation end and connected between the fourth portion and the ground portion. The control component is connected to the frequency control unit and the digital control circuit for receiving the frequency control signal through the digital control line, and accordingly generating a plurality of control signals to adjust the length of the frequency control unit.

In an embodiment, the adjustable antenna module further includes a substrate. The grounding portion, the radiating line, the parasitic line, the frequency adjusting unit and the control element are formed on the substrate.

In an embodiment, the grounding portion is a metal foil, and the curved structure has a U shape.

In an embodiment, the aforementioned frequency control unit includes a plurality of frequency control elements and a plurality of switching elements. The frequency control component is disposed adjacent to the third radiation end, and the frequency control component is sequentially arranged at a preset distance, and the length of the frequency control component is sequentially decreased by the third radiation end, and one end of the frequency control component is connected to the fourth portion. The switching element is connected between the other end of the corresponding frequency control element and the grounding portion in a one-to-one manner.

In an embodiment, the frequency control component is a metal circuit, and the foregoing switching component is a component of a radio frequency switch or the like.

In an embodiment, the aforementioned control element includes a digital control circuit and a conversion circuit. The digital control circuit is connected to the digital control circuit for receiving the frequency control signal and converting the frequency control signal into a logic control signal. The conversion circuit is connected to the digital control circuit and the switching component for converting the logic control signal into a control signal to control the conduction and non-conduction of the switching element, thereby adjusting the area of the frequency control component.

In an embodiment, the aforementioned digital control circuit is a microprocessor or a logic circuit composed of active components.

In an embodiment, the aforementioned conversion circuit is composed of an active component and a passive component.

In one embodiment, the aforementioned digital control line is a general purpose input/output bus, an internal integrated circuit bus, a universal asynchronous transceiver bus, or a serial peripheral bus.

The adjustable antenna module disclosed in the present invention is arranged in an adjacent manner by a radiating line and a parasitic line to form at least three radiating ends of different frequency bands, and is provided The plurality of frequency control components, the plurality of switching components and the control component are disposed, and the switching component is controlled to be turned on and off by the control component to adjust the resonant frequency of the adjustable antenna module through the frequency regulating component, thereby adjusting the adjustable antenna module The resonance frequency of the group is shifted to the low frequency, so that the antenna of the present invention has a small size and has low frequency transceiving capability, and can fully meet the requirements of the current 4G low frequency communication technology.

The features and implementations of the present invention are described in detail below with reference to the drawings.

Please refer to FIG. 1 and FIG. 2, which are schematic and partial enlarged views of the adjustable antenna module of the first embodiment of the present invention. The adjustable antenna module 100 of the present embodiment can be installed inside a portable electronic device (not shown), such as a notebook computer, for receiving wireless electromagnetic signals. The adjustable antenna module 100 includes a substrate 110, a grounding portion 120, a radiating line 130, a short circuit 140, a parasitic line 150, a frequency adjusting unit 160, and a control element 180.

The substrate 110 can be a FR4 fiberglass board as a carrier of the adjustable antenna module 100, but is not limited thereto. The grounding portion 120 is formed on the substrate 110, and the grounding portion 120 is a metal foil, and the material thereof may be aluminum metal or copper metal, but is not limited to the type and material disclosed in the embodiment.

The radiation line 130, the short circuit 140 and the parasitic line 150 are formed on the substrate 110, and the material thereof may be a metal material. The radiation line 130 has a first portion 131, a second portion 132, and a third portion 133, and one end of the first portion 131 is connected to the second portion 132, and one end of the second portion 132 is connected to one end of the third portion 133, so that the radiation line 130 is roughly configured as an inverted F-shaped structure.

The other end of the first portion 131 has a feeding portion 1311. The other end of the second portion 132 and the other end of the third portion 133 are respectively a first radiating end 1321 and a second radiating end 1331, and the first radiating end 1321 and the second radiating end 1331 receive a frequency band of the wireless electromagnetic wave signal and Not the same.

The short circuit 140 is located at one side of the feeding portion 1311, and the two ends of the short circuit 140 are respectively connected to the feeding portion 1311 and the ground portion 120, and the short circuit 140 has a curved structure in the middle. In the present embodiment, the shape of the curved structure may be U-shaped or horseshoe-shaped, but may be other shapes.

The parasitic line 150 has a fourth portion 151 and a fifth portion 152. One end of the fourth portion 151 is connected to one end of the fifth portion 152, and one end of the fourth portion 151 is adjacent to the other side of the feeding portion 1311. The other end of the four portions 151 is connected to the ground portion 120. Moreover, the fifth portion 152 has a third radiating end 1521, and the third radiating end 1521 is different from the frequency band of the wireless electromagnetic wave signal received by the first radiating end 1321 and the second radiating end 1331.

The frequency control unit 160 is disposed adjacent to the first radiating end 1321 of the second portion 132 of the radiating line 130 and is connected to the ground portion 120. Further, the frequency adjustment unit 160 further includes frequency control elements 161, 162, 163 and switching elements 171, 172, 173.

The frequency regulating elements 161, 162, 163 can be metal pads and are disposed adjacent to the first radiating end 1321 of the second portion 132 of the radiating line 130. In this implementation In the example, the frequency control elements 161, 162, 163 are disposed, for example, on the same axis and parallel to the second portion 132 of the radiating line 130.

The switching elements 171, 172, 173 can be components of a radio frequency switch (RF Switch) or other similar functions, and one of the switching elements 171, 172, 173 is connected to one of the grounding portion 120 and the frequency regulating components 161, 162, 163. Between the remaining switching elements 171, 172, 173 is connected between one of the frequency regulating elements 161, 162, 163 and the remaining frequency regulating elements 161, 162, 163. For example, the switching element 171 is connected between the grounding portion 120 and the frequency regulating element 161, the switching element 172 is connected between the frequency regulating elements 161 and 162, and the switching element 173 is connected between the frequency regulating elements 162 and 163.

The control unit 180 is connected to the frequency control unit 160 for connecting the portable electronic device through the digital control circuit 190 to receive the frequency control signal (that is, the external control signal) generated by the portable electronic device, thereby generating more The control signals are used to adjust the area of the frequency control unit 160 to adjust the resonant frequency of the adjustable antenna module 100.

In the present embodiment, the control element 180 includes a digital control circuit 181 and a conversion circuit 182. The digital control circuit 181 is connected to the digital control circuit 190 for receiving the frequency control signal and converting the frequency control signal into a logic control signal. The conversion circuit 182 is connected to the digital control circuit 181 and the switching elements 171, 172, 173 for converting the logic control signals into a plurality of control signals CS1, CS2 and CS3, for example, control voltages and currents of the switching elements 171, 172, 173, Controlling the conduction and non-conduction of the switching elements 171, 172, 173, respectively, to adjust the second portion 132 of the radiating line 130 The size of the coupling area with the frequency control unit 160 further adjusts the resonant frequency of the adjustable antenna module 100.

For example, when the conversion circuit 182 of the control element 180 generates the control signals CS1, CS2, and CS3 of the low logic level to the switching elements 171, 172, and 173, respectively, the switching elements 171, 172, and 173 are not turned on, and then the adjustable The antenna module 100 operates in the state 1 (ie, the frequency control elements 161, 162, and 163 are not connected, and the frequency control element 161 is not connected to the ground portion 120), so that the second portion 132 of the radiation line 130 is not frequency-controlled. The elements 161, 162, 163 are coupled such that the first radiating end 1321 operates in the first frequency band range.

When the conversion circuit 182 of the control element 180 respectively generates the control signal CS1 of the high control voltage to the switching element 171 and the control signals CS2 and CS3 of the low control voltage to the switching elements 172, 173, the switching element 171 is turned on, and the switching elements 172, 173 are turned on. When not conducting, the adjustable antenna module 100 operates in the state 2 (ie, the frequency control elements 161, 162, 163 are not connected, and the frequency control element 161 is connected to the ground 120), so that the second portion of the radiating line 130 132 is coupled to frequency control component 161 to operate first radiation terminal 1321 in the second frequency band.

When the conversion circuit 182 of the control element 180 generates the control signals CS1 and CS2 of the high control voltage to the switching elements 171 and 172 and the control signal CS3 of the low control voltage to the switching element 173, respectively, the switching elements 171 and 172 are turned on, and the switching element 173 is not Turning on, the adjustable antenna module 100 operates in the state 3 (ie, the frequency adjusting component 162 is not connected to the frequency regulating component 163, and the frequency regulating component 161 is connected to the frequency regulating component 162, and the frequency regulating component 161 is connected to the grounding portion 120). Radiation line The second portion 132 of 130 is coupled to the frequency regulating elements 161, 162 such that the first radiating end 1321 operates in the third frequency band range.

When the conversion circuit 182 of the control element 180 respectively generates the control signals CS1, CS2, CS3 of the high control voltage to the switching elements 171, 172, 173, the switching elements 171, 172, 173 are turned on, and the adjustable antenna module 100 is in the state 4 The structural operation (ie, the frequency control elements 161, 162, 163 are connected, and the frequency control element 161 is connected to the ground portion 120), and the second portion 132 of the radiation line 130 is coupled with the frequency control elements 161, 162, 163 so that The first radiating terminal 1321 operates in a fourth frequency band range.

In this embodiment, the first frequency band range, the second frequency band range, the third frequency band range, and the fourth frequency band range are different, and the range of the frequency band is sequentially the first frequency band range, the second frequency band range, and the third frequency band. Range, fourth frequency range. In this way, by controlling the switching elements 171, 172, 173 to be turned on or off, the overall size of the frequency control element is adjusted, and then the resonant frequency of the adjustable antenna module 100 is adjusted to be shifted to a low frequency, so that the adjustable antenna module is adjusted. Group 100 is operable with good multi-frequency transceiver capability.

In addition, the foregoing digital control circuit 181 may be a microprocessor or a logic circuit composed of active components, and the conversion circuit 182 may be composed of an active component and a passive component. The digital control circuit 190 can be a general purpose input/output (GPIO) bus, an inter-integrated circuit (I2C) bus, and a universal asynchronous receiver (Universal Asynchronous Receiver/Transmitter, UART). ) bus or string Serial Peripheral Interface (SPI) bus.

In addition, in this embodiment, only three frequency control elements 161, 162, and 163 and three switching elements 171, 172, and 173 are taken as an example, but the present invention is not limited thereto, so that other numbers of frequency control elements and switching elements can be used. To implement, for example, 2, 4 or 4 or more.

Please refer to "Figure 3" and "Figure 4" for a schematic diagram of the adjustable antenna module of the second embodiment of the present invention. The adjustable antenna module 200 of the present embodiment can also be installed in a portable electronic device, such as a notebook computer, for receiving wireless electromagnetic wave signals. The adjustable antenna module 200 includes a substrate 210, a grounding portion 220, a radiating line 230, a parasitic line 240, a plurality of frequency regulating elements 251, 252, 253, 254, a plurality of switching elements 261, 262, 263, 264, and a control element. 270.

The substrate 210 can be a FR4 fiberglass board as a carrier of the adjustable antenna module 200, but is not limited thereto. The grounding portion 220 is formed on the substrate 210, and the grounding portion 220 is a metal foil. The material of the grounding portion 220 may be aluminum metal or copper metal, but it is not limited to the type and material disclosed in the embodiment.

The radiation line 230 and the parasitic line 240 are formed on the substrate 210, and the material thereof may be a metal material. The radiation line 230 has a first portion 231, a second portion 232, and a third portion 233. One end of the first portion 231 is connected to the second portion 232, and one end of the second portion 232 is connected to one end of the third portion 233. The three portions 233 have a curved structure. In the present embodiment, the shape of the curved structure may be U-shaped, but may be other shapes.

The other end of the first portion 231 has a feed portion 2311. The second part 232 The other ends of the first end and the third portion 233 are respectively a first radiating end 2321 and a second radiating end 2331, and the frequency ranges of the wireless electromagnetic wave signals received by the first radiating end 2321 and the second radiating end 2331 are not the same.

The parasitic line 240 has a fourth portion 241, wherein one end of the fourth portion 241 is adjacent to one end of the second portion 232, and the fourth portion 241 has a third radiating end 2411, and the third radiating end 2411 and the first radiating end 2321 The frequency bands of the wireless electromagnetic wave signals received by the second radiating end 2331 are not the same.

The frequency control unit 250 is disposed adjacent to the third radiating end 2411 of the fourth portion 241 of the parasitic line 240 and connected between the fourth portion 241 of the parasitic line 240 and the ground portion 220. Further, the frequency adjustment unit 250 further includes frequency control elements 251, 252, 253, 254 and switching elements 261, 262, 263, 264.

The frequency control elements 251, 252, 253, 254 can be metal traces, and the frequency control elements 251, 252, 253, 254 are disposed adjacent to the third radiating end 2411 of the fourth portion 241 of the parasitic line 240. Moreover, the frequency control elements 251, 252, 253, 254 are sequentially arranged at a predetermined distance. For example, starting from the third radiating end 2411, the order of the frequency regulating components is 251, 252, 253, and 254, wherein the preset distance can be adjusted according to the user's needs.

The paths of the third spurious radiating ends 2411 of the frequency regulating elements 251, 252, 253, 254 are sequentially decreased. For example, the length of the frequency control element 251 > the length of the frequency control element 252 > the length of the frequency control element 253 > the length of the frequency control element 254. Further, for example, one ends of the frequency control elements 251, 252, 253, and 254 are respectively connected to the fourth portion 241 of the parasitic line 240.

The switching elements 261, 262, 263, 264 can be components of a radio frequency switch or other similar function, and the switching elements 261, 262, 263, 264 are connected to the corresponding frequency regulating elements 251, 252, 253, 254 in a one-to-one manner. The other end is between the grounding portion 220. For example, the switching element 261 is connected between the frequency adjusting component 251 and the grounding portion 220, the switching component 262 is connected between the frequency regulating component 252 and the grounding portion 220, and the switching component 263 is connected to the frequency regulating component 253 and the grounding portion 220. The switching element 264 is connected between the frequency control element 254 and the grounding portion 220.

The control component 270 is connected to the frequency control component for connecting the portable electronic device through the digital control circuit 280 to receive the frequency control signal (ie, the external control signal) generated by the portable electronic device, thereby generating multiple The signal is controlled to adjust the length of the frequency control unit 250 to adjust the resonant frequency of the adjustable antenna module 200.

In the present embodiment, control element 270 includes digital control circuit 271 and conversion circuit 272. The digital control circuit 271 is connected to the digital control circuit 280 for receiving the frequency control signal and converting the frequency control signal into a logic control signal. The conversion circuit 272 is connected to the digital control circuit 271 and the switching elements 261, 262, 263, 264 for converting the logic control signals into control voltages and currents for converting the logic control signals into, for example, the switching elements 171, 172, 173. The plurality of control signals CS1, CS2, CS3, and CS4 respectively control the conduction and non-conduction of the switching elements 261, 262, 263, and 264 to adjust the length between the fourth portion 241 of the parasitic line 240 and the ground portion 120, thereby adjusting The resonant frequency of the adjustable antenna module 200.

For example, when the conversion circuit 272 of the control element 270 generates high control, respectively When the voltage control signal CS1 to the switching element 264 and the low control voltage control signals CS2, CS3, CS4 to the switching elements 263, 262, 261, the switching element 264 is turned on, and the switching elements 263, 262, 261 are not turned on, the adjustable antenna The module 200 operates in the state 1 (ie, the frequency control elements 253, 252, 251 are not connected to the ground portion 220, and the frequency control element 254 is connected to the ground portion 220), and the fourth portion 241 of the parasitic line 240 is transmitted through the frequency adjustment element 254. The grounding portion 220 is connected to operate the third radiating end 2411 in the first frequency band range.

When the conversion circuit 272 of the control element 270 respectively generates the control signal CS2 of the high control voltage to the switching element 263 and the control signals CS1, CS3, CS4 of the low control voltage to the switching elements 264, 262, 261, the switching element 263 is turned on, and the switching element When the 264, 262, and 261 are not turned on, the adjustable antenna module 200 operates in the state 2 (that is, the frequency adjusting components 254, 252, and 251 are not connected to the grounding portion 220, and the frequency regulating component 253 is connected to the grounding portion 220) to make the parasitic The fourth portion 241 of the line 240 is coupled to the ground portion 220 through the frequency regulating element 253 to operate the third radiating end 2411 in the second frequency band.

When the conversion circuit 272 of the control element 270 respectively generates the control signal CS3 of the high control voltage to the switching element 262 and the control signals CS1, CS2, CS4 of the low control voltage to the switching elements 264, 263, 261, the switching element 262 is turned on, and the switching element is turned on. When the 264, 263, and 261 are not turned on, the adjustable antenna module 200 operates in the state 3 (that is, the frequency adjusting components 254, 253, and 251 are not connected to the grounding portion 220, and the frequency regulating component 252 is connected to the grounding portion 220) to make the parasitic The fourth portion 241 of the line 240 is connected to the ground portion 220 through the frequency adjusting component 252 to operate the third radiating end 2411. In the third frequency band.

When the conversion circuit 272 of the control element 270 respectively generates the control signal CS4 of the high control voltage to the switching element 261 and the control signals CS1, CS2, CS3 of the low control voltage to the switching elements 264, 263, 262, the switching element 261 is turned on, and the switching element is turned on. When the 264, 263, and 262 are not turned on, the adjustable antenna module 200 operates in the state 4 (ie, the frequency adjusting components 254, 253, and 252 are not connected to the grounding portion 220, and the frequency regulating component 251 is connected to the grounding portion 220) to make the parasitic The fourth portion 241 of the line 240 is coupled to the ground portion 220 through the frequency regulating element 254 such that the third radiating end 2411 operates in the fourth frequency band range.

In this embodiment, the first frequency band range, the second frequency band range, the third frequency band range, and the fourth frequency band range are different, and the range of the frequency band is sequentially the first frequency band range, the second frequency band range, and the third frequency band. Range, fourth frequency range. In this way, by controlling the switching elements 261, 262, 263, 264 to be turned on or off, the fourth portion 241 of the parasitic line 240 is transmitted through the frequency adjusting elements 251, 252, 253, 254 of different lengths to the grounding portion 220, Furthermore, the resonant frequency of the adjustable antenna module 200 is adjusted to be shifted to a low frequency, so that the adjustable antenna module 200 can be operated with good multi-frequency transceiving capability.

In addition, the foregoing digital control circuit 271 may be a microprocessor or a logic circuit composed of active components, and the conversion circuit 272 may be composed of an active component and a passive component. The aforementioned digital control line 280 can be a general purpose input/output bus, an internal integrated circuit bus, a universal asynchronous transceiver bus, or a serial peripheral bus. In addition, this embodiment uses four frequency control elements 251, 252, 253, 254 and four switching elements 261, 262, 263, and 264 are taken as an example, but the present invention is not limited thereto, and may be implemented by other numbers of frequency control elements and switching elements, for example, two, three, and five. Or more than 5 or more.

Please refer to "Figure 5" to "Figure 8". The adjustable antenna modules 100 and 200 of "1" and "3" respectively are tested in the structure of state 1 to state 4. After the voltage standing wave ratio (VSWR) numerical distribution map. In "figure 5", the first point is about 0.88 GHz, the second point is about 0.96 GHz, the third point is about 1.71 GHz, the fourth point is about 2.17 GHz, and the fifth point is about 2.5 GHz, the sixth point. The point is approximately 2.7 GHz. The first point to the second point are, for example, the frequency band range of the first radiation end 1321 of "Fig. 1" and the third radiation end 2411 of "Fig. 3", and the third point to the fourth point are, for example, "1st. The second radiant end 1331 of the figure and the second radiant end 2331 of the "figure 3" are in the frequency band range, and the fifth point to the sixth point are, for example, the third radiating end 1521 and the "figure 3" of "Fig. 1". The frequency band range of the first radiating end 2321.

In "Picture 6", the first point is about 0.791 GHz, and the second point is about 0.894 GHz. The first point to the second point are, for example, the frequency band range of the first radiation end 1321 of "first diagram" and the third radiation end 2411 of "third diagram". In "Figure 7," the first point is about 0.746 GHz, and the second point is about 0.787 GHz. The first point to the second point are, for example, the frequency band range of the first radiation end 1321 of "first diagram" and the third radiation end 2411 of "third diagram". In "Figure 8," the first point is about 0.704 GHz, and the second point is about 0.746 GHz. The first point to the second point are, for example, the frequency band range of the first radiation end 1321 of "first diagram" and the third radiation end 2411 of "third diagram".

As can be clearly seen from the figure, the adjustable antenna modules 100 and 200 of the present invention can be adjusted by adjusting the switching elements 171, 172, 173 (corresponding to the adjustable antenna module 100) and the switching elements 261, 262, 263, 264 ( Corresponding to the conduction or non-conduction of the adjustable antenna module 200), the resonant frequencies of the adjustable antenna modules 100 and 200 can be shifted to low frequencies (for example, 880 MHz from the structure of state 1 to 704 MHz of the structure of state 4) The adjustable antenna modules 100 and 200 can receive wireless electromagnetic wave signals in the frequency range of 700 MHz to 2700 MHz, thereby demonstrating that the adjustable antenna modules 100 and 200 of the present invention have the capability of multi-frequency transmission and reception.

The following Tables 1 to 4 are respectively antenna characteristic gain tables for the actual test of the structure of the state-adjustable antenna modules 100 and 200 operating in the state 1, the state 2, the state 3, and the state 4.

It can be proved from the first table to the fourth table that the gain values of the adjustable antenna modules 100 and 200 of the present invention are quite good and have no problem in the use of different frequency ranges.

The adjustable antenna module of the present invention is arranged adjacently by a radiating line and a parasitic line to form at least three radiating ends of different frequency bands, and is provided with a plurality of frequency regulating components, a plurality of switching components and a control component Control element The control switch element is turned on and off, and the frequency adjustment component is used to adjust the resonant frequency of the adjustable antenna module, thereby adjusting the resonant frequency of the adjustable antenna module to a low frequency offset, so that the antenna of the novel model has a small size and has Low-frequency transceiver capability can fully meet the needs of today's 4G low-frequency communication technology.

Although the present invention has been disclosed in the foregoing embodiments, it is not intended to limit the present invention, and the skilled person can make some modifications and retouchings without departing from the spirit and scope of the present invention. The scope of patent protection shall be subject to the definition of the scope of the patent application attached to this specification.

100, 200‧‧‧Adjustable antenna module

110, 210‧‧‧ substrate

120, 220‧‧‧ Grounding Department

130, 230‧‧‧radiation lines

131, 231‧‧‧ first part

1331, 2311‧‧ ‧Feeding Department

132, 232‧‧‧ second part

1321, 2321‧‧‧ first radiation end

133, 233‧‧‧ third part

1331, 2331‧‧‧second radiation end

140‧‧‧Short circuit

150, 240‧‧‧ parasitic lines

151, 241‧‧‧ fourth part

152‧‧‧ fifth part

1521, 2411‧‧‧ third radiation end

160, 250‧‧‧ frequency control unit

161, 162, 163, 251, 252, 253, 254 ‧ ‧ frequency control components

171, 172, 173, 261, 262, 263, 264‧‧‧ switching elements

180, 270‧‧‧ control elements

181, 271‧‧‧ digital control circuit

182, 272‧‧‧ conversion circuit

190, 280‧‧‧ digital control lines

CS1, CS2, CS3, CS4‧‧‧ control signals

1 is a schematic view of a tunable antenna module according to a first embodiment of the present invention.

2 is a partially enlarged schematic view of the adjustable antenna module of the first embodiment of the present invention.

Fig. 3 is a schematic view showing the adjustable antenna module of the second embodiment of the present invention.

Fig. 4 is a partially enlarged schematic view showing the adjustable antenna module of the second embodiment of the present invention.

Figure 5 is a diagram showing the value distribution of the voltage standing wave ratio after the adjustable antenna module of "Fig. 1" and "Fig. 3" and the structure test after operation in state 1.

Figure 6 is a diagram showing the value distribution of the voltage standing wave ratio after the adjustable antenna module of "Fig. 1" and "Fig. 3" and the structure test after operation in state 2.

Figure 7 is a diagram showing the value distribution of the voltage standing wave ratio after the adjustable antenna module of "Fig. 1" and "Fig. 3" and the structure test after operation in state 3.

Figure 8 is an adjustable antenna module of "Figure 1" and "Figure 3" and via The voltage standing wave ratio value distribution map after the structural test of state 4.

100‧‧‧Adjustable antenna module

110‧‧‧Substrate

120‧‧‧ Grounding Department

130‧‧‧radiation lines

131‧‧‧ first part

1311‧‧‧Feeding Department

132‧‧‧Second part

1321‧‧‧first radiation end

133‧‧‧ third part

1331‧‧‧second radiation end

140‧‧‧Short circuit

150‧‧‧ Parasitic lines

151‧‧‧ fourth part

152‧‧‧ fifth part

1521‧‧‧ Third radiating end

160‧‧‧frequency control unit

161, 162, 163‧‧‧ frequency control components

180‧‧‧Control elements

181‧‧‧Logic Control Circuit

182‧‧‧Transition circuit

190‧‧‧ digital control circuit

Claims (18)

An adjustable antenna module includes: a grounding portion; a radiating circuit having a first portion, a second portion, and a third portion, wherein one end of the first portion is coupled to the second portion, and The other end of the first portion has a feeding portion, and one end of the second portion is connected to one end of the third portion, and the other end of the second portion and the other end of the third portion are respectively a first radiating end and a first end. a second radiating end, and a frequency band range of the first radiating end is different from a frequency band range of the second radiating end; a short circuit is located at one side of the feeding portion, and the two ends of the short circuit are respectively connected to the feeding portion and the a grounding portion, and a curved structure is formed in the middle of the short circuit; a parasitic circuit has a fourth portion and a fifth portion, and one end of the fourth portion is connected to one end of the fifth portion, and the first portion The fourth portion is adjacent to the other side of the feeding portion, the other end of the fourth portion is connected to the ground portion, and the other end of the fifth portion has a third radiating end, wherein a frequency band range of the third radiating end The frequency bands of the first radiating end and the second radiating end are different from each other; a frequency adjusting unit is disposed adjacent to the first radiating end and connected to the grounding portion; and a control component is connected to the frequency adjusting unit and the a digital control circuit for receiving a frequency control signal through the digital control line, thereby generating a plurality of Control the signal to adjust the area of the frequency control unit. The adjustable antenna module of claim 1, further comprising a substrate, the grounding portion, the radiating line, the short circuit, the parasitic line, the frequency adjusting unit and the control element are formed on the substrate . The adjustable antenna module of claim 1, wherein the ground portion is a metal foil, and the curved structure has a U shape or a horseshoe shape. The adjustable antenna module of claim 1, wherein the frequency control unit comprises: a plurality of frequency control elements disposed adjacent to the first radiation end; and a plurality of switching elements, the switching elements One of the connection is connected between the grounding portion and one of the frequency regulating components, and the remaining switching components are connected between one of the frequency regulating components and the remaining frequency regulating components. The adjustable antenna module of claim 4, wherein the frequency control components are metal pads, and the switching components are radio frequency switches. The adjustable antenna module of claim 4, wherein the control component comprises: a digital control circuit connected to the digital control circuit for receiving the frequency control signal and converting the frequency control signal into a logic a control circuit; and a conversion circuit connecting the digital control circuit and the switching elements for converting the logic control signal into the control signals to control conduction and non-conduction of the switching elements, thereby adjusting the frequency regulation The area of the component. The adjustable antenna module according to claim 6, wherein the digital control The circuit is a microprocessor or a logic circuit composed of active components. The adjustable antenna module of claim 6, wherein the conversion circuit is composed of an active component and a passive component. The adjustable antenna module of claim 1, wherein the digital control line is a universal input/output bus, an internal integrated circuit bus, a universal asynchronous transceiver bus, or a serial peripheral bus. An adjustable antenna module includes: a grounding portion; a radiating circuit having a first portion, a second portion, and a third portion, wherein one end of the first portion is connected to the second portion, and The other end of the first portion has a feeding portion, one end of the second portion is connected to one end of the third portion, the third portion has a curved structure, and the other end of the second portion and the other end of the third portion The first radiating end and the second radiating end are respectively, and the frequency band range of the first radiating end and the frequency band range of the second radiating end are different from each other; a parasitic line having a fourth portion, the fourth portion One end of the portion is adjacent to one end of the second portion, and the other end of the fourth portion has a third radiating end, wherein a frequency band range of the third radiating end and a frequency band range of the first radiating end and the second radiating end Different from each other; a frequency control unit disposed adjacent to the third radiation end and connected between the fourth portion and the ground portion; and a control component connecting the frequency control unit and a digit Line system, with A frequency control signal is received through the digital control line, and a plurality of control signals are generated to adjust the length of the frequency control unit. The adjustable antenna module of claim 10, further comprising a substrate, the grounding portion, the radiating line, the parasitic line, the frequency adjusting unit and the control element are formed on the substrate. The adjustable antenna module of claim 10, wherein the grounding portion is a metal foil, and the curved structure has a U shape. The adjustable antenna module of claim 10, wherein the frequency control unit comprises: a plurality of frequency control components disposed adjacent to the third radiation end, and the frequency control components are at a predetermined distance Arranging sequentially, wherein the lengths of the frequency control elements are sequentially decreased by the third radiation end, one end of the frequency control element is connected to the fourth portion; and the plurality of switching elements are connected in a one-to-one manner. The other end of the frequency control element is between the ground and the ground. The adjustable antenna module of claim 13, wherein the frequency control components are metal lines, and the switching elements are radio frequency switches. The tunable antenna module of claim 13, wherein the control component comprises: a digital control circuit connected to the digital control circuit for receiving the frequency control signal and converting the frequency control signal into a logic a control signal; and a conversion circuit connecting the digital control circuit and the switching elements for The logic control signal is converted into the control signals to control the conduction and non-conduction of the switching elements, thereby adjusting the area of the frequency control element. The tunable antenna module of claim 15, wherein the digital control circuit is a microprocessor or a logic circuit composed of active components. The tunable antenna module of claim 15, wherein the conversion circuit is composed of an active component and a passive component. The tunable antenna module of claim 10, wherein the digital control line is a universal input/output bus, an internal integrated circuit bus, a universal asynchronous transceiver bus, or a serial peripheral bus.