CN205039812U - Radio frequency device of adjustable antenna impedance and antenna frequency - Google Patents
Radio frequency device of adjustable antenna impedance and antenna frequency Download PDFInfo
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- CN205039812U CN205039812U CN201520746791.2U CN201520746791U CN205039812U CN 205039812 U CN205039812 U CN 205039812U CN 201520746791 U CN201520746791 U CN 201520746791U CN 205039812 U CN205039812 U CN 205039812U
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Abstract
The utility model provides a radio frequency device of adjustable antenna impedance and antenna frequency, it is main including a first circuit board, a radio frequency module and a second Circuit Board, wherein radio frequency module sets up on the first circuit board, the first circuit board sets up on second Circuit Board, radio frequency module includes an antenna element, a first frequency adjustment unit and a radio frequency circuit, wherein antenna element sets up in the first headroom district of first circuit board, and through a signal feed -in line connection radio frequency circuit, second Circuit Board includes a second frequency adjustment unit, wherein second frequency adjustment unit passes through earth connection and the first frequency adjustment unit connection antenna element on the first circuit board, and accessible first frequency adjustment unit and second frequency adjustment unit adjustment antenna element's resonance frequency. The utility model discloses radio frequency module's circuit is need not to change, through transform first frequency adjustment unit and / or second frequency adjustment unit, the resonance frequency and the impedance of antenna can be adjusted.
Description
Technical field
The utility model has the radio-frequency unit about a kind of adjustable antenna impedance and frequency, by the first frequency adjustment unit on conversion first circuit board and/or the second frequency adjustment unit on second circuit board, and the resonance frequency of adjustment antenna and impedance.
Background technology
Along with the progress of wireless communication technology, wireless communications products has been widely used in daily life, and radio-frequency unit is then one of most important part of wireless communications products.
The modular design of communication product, often can allow system factory when designing new product, save a large amount of development times.As long as system factory is according to the function of demand, buys the radio-frequency module product be applicable to, the characteristic required for new product can be realized easily.But also because the demand of product function is more and more diversified, volume is more and more lightening, so, often cause the radio-frequency module product including antenna, when being assembled in circuit board or wireless communications products, antenna is subject to the impact of surrounding environment, and the frequency of antenna and impedance are offset, cause the signal quality of reception and transmitting bad.
In order to avoid above-mentioned problem produces, radio-frequency module manufacturer often needs the Product environment for each client to go to adjust impedance and the frequency of antenna, after can guaranteeing that radio-frequency module is arranged on wireless communications products, still can reach default usefulness.Radio-frequency module manufacturer can be increased thus undoubtedly and make time of spending of radio-frequency module and cost, and cause the cost of manufacture of wireless communications products to improve
Utility model content
An object of the present utility model, is the radio-frequency unit providing a kind of adjustable antenna frequency and impedance, mainly comprises a first circuit board, a radio-frequency module and a second circuit board.Radio-frequency module is arranged on first circuit board, and first circuit board is arranged on the second circuit board.The antenna element of radio-frequency module connects the second frequency adjustment unit on second circuit board by earth connection and first frequency adjustment unit, with this by conversion first frequency adjustment unit and/or second frequency adjustment unit, adjust resonance frequency and the impedance of antenna.
Another object of the present utility model, be the radio-frequency unit that a kind of adjustable antenna impedance and frequency are provided, the resonance frequency of antenna element is adjusted by the first frequency adjustment unit on first circuit board and the second frequency adjustment unit on second circuit board, after making radio-frequency module and first circuit board be arranged on second circuit board, the circuit of radio-frequency module need not be rechanged, only utilize second frequency adjustment unit, the i.e. resonance frequency of adjustable antenna element, revises the resonant frequency shift that antenna element causes because being subject to environmental impact.
Another object of the present utility model, be the radio-frequency unit that a kind of adjustable antenna impedance and frequency are provided, by the first impedance matching unit on first circuit board and the second impedance matching unit on second circuit board, after making radio-frequency module and first circuit board be arranged on second circuit board, the circuit of radio-frequency module need not be rechanged, only utilizing the impedance of the second impedance matching unit and adjustable antenna element, revising the resistance shift that antenna element causes because being subject to environmental impact.
For achieving the above object, the utility model by the following technical solutions:
A radio-frequency unit for adjustable antenna impedance and antenna frequencies, comprising: a first circuit board; One radio-frequency module, is arranged on first circuit board, and comprises: an antenna element, a first frequency adjustment unit, one first impedance matching unit, one first headroom district, at least one earth connection, a radio circuit, a signal feed-in line and one first ground plane; Wherein the first headroom district is positioned at first circuit board, and antenna element is positioned at the first headroom district, and is electrically connected earth connection, signal feed-in line and first frequency adjustment unit; First frequency adjustment unit, is electrically connected antenna element and at least one earth connection; First impedance matching unit, is electrically connected signal feed-in line; Signal feed-in line is electrically connected to radio circuit; One second circuit board, is arranged at the below of first circuit board, and comprises: one second ground plane, a second frequency adjustment unit, and wherein the second ground plane is electrically connected the first ground plane; At least one earth connection on second frequency adjustment unit electric connection first circuit board and the second ground plane.
The utility model also provides the radio-frequency unit of another kind of adjustable antenna impedance and antenna frequencies, comprising: a first circuit board; One radio-frequency module, be arranged on first circuit board, and comprise: an antenna element, a first frequency adjustment unit, a second frequency adjustment unit, one first impedance matching unit, one second impedance matching unit, one first headroom district, a plurality of earth connection, a radio circuit, one first signal feed-in line, one second signal feed-in line and one first ground plane; Wherein the first headroom district is positioned at first circuit board, antenna element has two resonance frequencys, be positioned at the first headroom district, and be electrically connected a plurality of earth connection, the first signal feed-in line, the second signal feed-in line, first frequency adjustment unit and second frequency adjustment unit; First frequency adjustment unit is electrically connected antenna element, the first signal feed-in line and at least one earth connection; Second frequency adjustment unit is electrically connected antenna element, the second signal feed-in line and at least one earth connection; First impedance matching unit is electrically connected the first signal feed-in line; Second impedance matching unit, is electrically connected the second signal feed-in line; Radio circuit is electrically connected the first signal feed-in line and the second signal feed-in line; One second circuit board, is arranged at above or below first circuit board, comprises; One second ground plane, one the 3rd frequency adjustment unit and one the 4th frequency adjustment unit, wherein the second ground plane is electrically connected the first ground plane; 3rd frequency adjustment unit is electrically connected the first frequency adjustment unit on first circuit board; 4th frequency adjustment unit is electrically connected the second frequency adjustment unit on first circuit board.
In the utility model radio-frequency unit one embodiment, also comprise one second impedance matching unit, be positioned at second circuit board, and the second impedance matching unit is electrically connected the first impedance matching unit on first circuit board.
In the utility model radio-frequency unit one embodiment, wherein second circuit board comprises one second headroom district, is positioned at the first vertical extended position in headroom district.
In the utility model radio-frequency unit one embodiment, wherein antenna element comprises: at least one base material; Plural conductive layer, be arranged at surface or the inside of base material, wherein form capacity effect between plural conductive layer, and produce the resonance frequency of antenna element, wherein a plurality of earth connection connects each conductive layer of antenna element respectively, and signal feed-in line then connects at least one conductive layer of antenna element.
In the utility model radio-frequency unit one embodiment, wherein antenna element comprises: at least one base material; At least one first conductive layer, is arranged at surface or the inside of base material, and wherein the first conductive layer is electrically connected first frequency adjustment unit; And at least one second conductive layer, be arranged at surface or the inside of base material, wherein between the first conductive layer and the second conductive layer in order to produce capacity effect, and form the resonance frequency of antenna element, wherein the second conductive layer connects signal feed-in line and at least one earth connection.
In the utility model radio-frequency unit one embodiment, wherein the first conductive layer and the second conductive layer are separately positioned on different planes, and part first conductive layer is overlapping with part second conductive layer to produce capacity effect, and form the resonance frequency of antenna element.
In the utility model radio-frequency unit one embodiment, wherein the first conductive layer and the second conductive layer are arranged in identical or close plane, and there is a gap between the first conductive layer and the second conductive layer to produce capacity effect, and form the resonance frequency of antenna element.
In the utility model radio-frequency unit one embodiment, wherein first frequency adjustment unit and second frequency adjustment unit comprise at least one electric capacity or at least one inductance.
In the utility model radio-frequency unit one embodiment, wherein the 3rd frequency adjustment unit first frequency adjustment unit in parallel, the 4th frequency adjustment unit is second frequency adjustment unit in parallel then.
In the utility model radio-frequency unit one embodiment, comprise one the 3rd impedance matching unit, be positioned at second circuit board, and be electrically connected the first impedance matching unit.
In the utility model radio-frequency unit one embodiment, comprise one the 4th impedance matching unit, be positioned at second circuit board, and be electrically connected the second impedance matching unit.
In the utility model radio-frequency unit one embodiment, wherein second circuit board comprises one second headroom district, is positioned at the vertical extended position in the first headroom district.
In the utility model radio-frequency unit one embodiment, wherein antenna element comprises: at least one base material; Plural conductive layer, be arranged at surface or the inside of base material, wherein form the region of two tool capacity effects between plural conductive layer, and produce two resonance frequencys of antenna element, wherein a plurality of earth connection connects each conductive layer of antenna element respectively, first signal feed-in line and the second signal feed-in line then connect two different conductive layers respectively, to transmit or to receive the signal of different frequency.
In the utility model radio-frequency unit one embodiment, wherein antenna element comprises: at least one base material; At least one first conductive layer, is arranged at surface or the inside of base material, and wherein the first conductive layer is electrically connected first frequency adjustment unit, and is electrically connected the first impedance matching unit by the first signal feed-in line; At least one second conductive layer, is arranged at surface or the inside of base material, and wherein the second conductive layer is electrically connected second frequency adjustment unit, and is electrically connected the second impedance matching unit by the second signal feed-in line; And at least one 3rd conductive layer, be arranged at surface or the inside of base material, the plane that 3rd conductive layer is arranged is different from the plane that the first conductive layer or the second conductive layer are arranged, and part the 3rd conductive layer is overlapping with part first conductive layer and part second conductive layer respectively, to form the region of two tool capacity effects, wherein the 3rd conductive layer is electrically connected first frequency adjustment unit, second frequency adjustment unit and the first ground plane by least one earth connection.
In the utility model radio-frequency unit one embodiment, wherein the first conductive layer and the second conductive layer connect the first ground plane respectively by least one earth connection.
In the utility model radio-frequency unit one embodiment, wherein first frequency adjustment unit, second frequency adjustment unit, the 3rd frequency adjustment unit and the 4th frequency adjustment unit comprise at least one electric capacity or at least one inductance.
Accompanying drawing explanation
Fig. 1 is the square connection diagram of an embodiment of the radio-frequency unit of the impedance of the utility model adjustable antenna and antenna frequencies.
Fig. 2 is the schematic perspective view of an embodiment of the radio-frequency unit of the impedance of the utility model adjustable antenna and antenna frequencies.
Fig. 3 is the perspective exploded view of an embodiment of the radio-frequency unit of the impedance of the utility model adjustable antenna and antenna frequencies.
Fig. 4 is the schematic perspective view of an embodiment of the antenna element of the radio-frequency unit of the impedance of the utility model adjustable antenna and antenna frequencies.
Fig. 5 is the schematic perspective view of the another embodiment of antenna element of the radio-frequency unit of the impedance of the utility model adjustable antenna and antenna frequencies.
Fig. 6 is the square connection diagram of the another embodiment of radio-frequency unit of the impedance of the utility model adjustable antenna and antenna frequencies.
Fig. 7 is the schematic perspective view of the another embodiment of radio-frequency unit of the impedance of the utility model adjustable antenna and antenna frequencies.
Fig. 8 is the schematic perspective view of the another embodiment of radio-frequency unit of the impedance of the utility model adjustable antenna and antenna frequencies.
Fig. 9 is the square connection diagram of the another embodiment of radio-frequency unit of the impedance of the utility model adjustable antenna and antenna frequencies.
Figure 10 is the schematic perspective view of the another embodiment of radio-frequency unit of the impedance of the utility model adjustable antenna and antenna frequencies.
Figure 11 is the perspective exploded view of the another embodiment of radio-frequency unit of the impedance of the utility model adjustable antenna and antenna frequencies.
Figure 12 is the schematic perspective view of the another embodiment of antenna element of the radio-frequency unit of the impedance of the utility model adjustable antenna and antenna frequencies.
Figure 13 is the square connection diagram of the another embodiment of radio-frequency unit of the impedance of the utility model adjustable antenna and antenna frequencies.
Figure 14 is the schematic perspective view of the another embodiment of radio-frequency unit of the impedance of the utility model adjustable antenna and antenna frequencies.
Figure 15 is the schematic perspective view of the another embodiment of radio-frequency unit of the impedance of the utility model adjustable antenna and antenna frequencies.
Figure 16 is the schematic perspective view of the another embodiment of radio-frequency unit of the impedance of the utility model adjustable antenna and antenna frequencies.
Figure 17 is the schematic perspective view of the another embodiment of radio-frequency unit of the impedance of the utility model adjustable antenna and antenna frequencies.
Although mode describes embodiment of the present utility model in the drawings by way of example, and is described in detail it in this article, the utility model has also allowed various amendment and replacement form.Accompanying drawing content of the present utility model can be inequality proportion, accompanying drawing and detailed description thereof are only the exposure of specific pattern, it is not restriction of the present utility model, contrary, according to modifying in the spirit and scope of claim, impartial component and displacement thereof be all the scope that the utility model is contained.
Embodiment
Below in conjunction with accompanying drawing, structural principle of the present utility model and operation principle are described in detail:
Refer to Fig. 1 to Fig. 3, be respectively the square connection diagram of radio-frequency unit one embodiment of the impedance of the utility model adjustable antenna and antenna frequencies, schematic perspective view and perspective exploded view.As shown in the figure, radio-frequency unit 10 mainly comprises first circuit board 11, radio-frequency module 13 and a second circuit board 15, and wherein radio-frequency module 13 is arranged on first circuit board 11, and second circuit board 15 is arranged on the below of first circuit board 11.
In the utility model one embodiment, the assembly be arranged on first circuit board 11 and circuit definitions can be become radio-frequency module 13, wherein radio-frequency module 13 comprises an antenna element 131, a plurality of earth connection 132, first frequency adjustment unit 133, signal feed-in line 134,1 first impedance matching unit 135,1 first ground plane 136, radio circuit 137 and one first headroom district 138.First headroom district 138 is positioned on first circuit board 11, and antenna element 131 is positioned at the first headroom district 138 of first circuit board 11.
Antenna element 131 is electrically connected at least one earth connection 132, signal feed-in line 134 and first frequency adjustment unit 133.
First impedance matching unit 135 and radio circuit 137 are all electrically connected signal feed-in line 134, and wherein radio circuit 137 is electrically connected antenna element 131 by signal feed-in line 134 and the first impedance matching unit 135.
Second circuit board 15 comprises second frequency adjustment unit 151 and one second ground plane 153, wherein the second ground plane 153 is electrically connected the first ground plane 136 on first circuit board 11, and second frequency adjustment unit 151 is electrically connected the second ground plane 153, and be electrically connected first frequency adjustment unit 133 by least one earth connection 132 on first circuit board 11.Such as the second ground plane 153 is electrically connected antenna element 131 by second frequency adjustment unit 151, earth connection 132 and first frequency adjustment unit 133.
First frequency adjustment unit 133 described in the utility model and second frequency adjustment unit 151, main in order to adjust the resonance frequency that antenna element 131 produces, such as first frequency adjustment unit 133 and second frequency adjustment unit 151 comprise the passive components such as electric capacity, inductance and/or resistance.
When practical application, when first circuit board 11 and radio-frequency module 13 are arranged on second circuit board 15, often because the size of second circuit board 15 or other assemblies, and cause the resonance frequency of the antenna element 131 on radio-frequency module 13 to produce skew, such as, after first circuit board 11 and radio-frequency module 13 are electrically connected circuit on second circuit board 15 or assembly, the resonance frequency of antenna element 131 from install before resonance frequency originally different.
The resonance frequency of antenna element 131 may be caused thus to depart from primary frequency scope, make first circuit board 11 and radio-frequency module 13, cannot normal operation after being arranged on second circuit board 15.By the content disclosed by the utility model, convertible second frequency adjustment unit 151, such as, select suitable capacitance, inductance value and/or 0 nurse resistance difficult to understand etc., the resonance frequency produced with the antenna element 131 changing radio-frequency module 13.Make first circuit board 11 and radio-frequency module 13, be arranged on after on second circuit board 15, the resonance frequency produced can meet required frequency range, and can operate normally.
First circuit board 11 and second circuit board 15 are arranged in stacked mode, wherein first circuit board 11 can be arranged at least one linkage unit 139, and be electrically connected the first ground plane 136 and the second ground plane 153 by linkage unit 139 or connect corresponding conducting wire.Linkage unit 139 can run through first circuit board 11 specifically, or arrange along the side of first circuit board 11, all can reach electric connection first ground plane 136 and the second ground plane 153 or connect the object of first circuit board and the corresponding conducting wire on second circuit board, the set-up mode of certain above-mentioned linkage unit 139 is only the utility model one embodiment, is not scope of the present utility model restriction.Radio circuit 137 on first circuit board, also according to the electrical characteristic demand of radio-frequency unit, is electrically connected to second circuit board 15, but this connection is not shown in schematic diagram.
In the utility model one embodiment, as shown in Figure 3, second circuit board 15 can comprise one second headroom district 155, and wherein the second headroom district 155 is positioned at the vertical extended position in the first headroom district 138.When first circuit board 11 is arranged on second circuit board 15, the first headroom district 138 on first circuit board 11 can be roughly overlapping with the second headroom district 155 on second circuit board 15.
In the utility model one embodiment, antenna element 131 comprises at least one base material 1311 and plural conductive layer 1313/1315, wherein each conductive layer 1313/1315 can be arranged on surface or the inside of base material 1311, antenna element 131 is arranged in the first headroom district 138 of first circuit board 11, wherein at least one earth connection 132 connects a conductive layer 1315 of antenna element 131, signal feed-in line 134 connects at least one conductive layer 1315 of antenna element 131, can capacity effect be formed between each conductive layer 1313/1315, and produce the resonance frequency of antenna element 131.Such as: conductive layer can comprise one first conductive layer 1313 and one second conductive layer 1315, wherein the first conductive layer 1313 is arranged on the surface of base material 1311, basal surface or inside, and connects earth connection 132 after being electrically connected first frequency adjustment unit 133.Second conductive layer 1315 is arranged at the surface of base material 1311, top surface or inside, connects signal feed-in line 134 and at least one earth connection 132, and is electrically connected the first impedance matching unit 135 by signal feed-in line 134.In order to produce capacity effect between first conductive layer 1313 and the second conductive layer 1315, and form the resonance frequency of antenna element 131.
First conductive layer 1313 and the second conductive layer 1315 can be separately positioned in the Different Plane of base material 1311 specifically, some of first conductive layer 1313 is overlapping with the second conductive layer 1315 of part, overlapping part is made to produce capacity effect between the two, to form the resonance frequency of antenna element 131, as shown in Figure 4.In different embodiments, first conductive layer 1313 and the second conductive layer 1315 are arranged in the identical or close plane of base material 1311, wherein there is a gap 1314 between the first conductive layer 1313 and the second conductive layer 1315, make can produce capacity effect between the first conductive layer 1313 and the second conductive layer 1315, and form the resonance frequency of antenna element 131, as shown in Figure 5.Antenna element 131 described in certain Fig. 4 and Fig. 5 is only execution mode of the present utility model, it is not restriction of the present utility model, to the utility model person of ordinary skill in the field, also replaceable multi-form antenna element, in spirit and scope according to the scope of the claims of the present utility model, modify, impartial component and displacement thereof, be all the scope that the utility model is contained.
In another embodiment of the utility model, as shown in FIG. 6 and 7, second circuit board 15 also can arrange one second impedance matching unit 157, and the second impedance matching unit 157 wherein on second circuit board 15 is electrically connected the first impedance matching unit 135 on first circuit board 11.After radio-frequency module 13 is arranged at second circuit board 15, because the change of electric circumstance, when causing the impedance of antenna element 131 to produce skew, the second impedance matching unit 157 can be utilized to adjust the impedance of antenna element 131.
In the utility model one embodiment, the first impedance matching unit 135 and the second impedance matching unit 157 can be the π match circuits formed by resistance, electric capacity and/or inductance.Generally speaking, when first circuit board 11 and radio-frequency module 13 being arranged on second circuit board 15, the impedance of the antenna element 131 of radio-frequency module 13 can be subject to the impact of second circuit board 15 size and/or other assemblies and cause the impedance matching between antenna element 131 and radio circuit 137 inappropriate.The second impedance matching unit 157 on second circuit board 15 can be adjusted for this reason further, such as, select suitable resistance, electric capacity and/or inductance, the antenna element 131 on radio-frequency module 13 and the impedance between radio circuit 137 can be matched each other.
Can be learnt by the utility model above-described embodiment, when first circuit board 11 and radio-frequency module 13 are arranged on second circuit board 15, often because the impact of second circuit board 15 size and/or other assemblies, cause the resonant frequency shift that the antenna element 131 of radio-frequency module 13 produces, or the impedance between antenna element 131 and radio circuit 137 is not matched each other.When practice is applied, if meet with above-mentioned problem, often can only according to the impact of second circuit board 15 radio frequency module 13, readjust the first frequency adjustment unit 133 on first circuit board 11 and radio-frequency module 13 and the first impedance matching unit 135, such as, change the electric capacity of first frequency adjustment unit 133 on radio-frequency module 13 and/or the first impedance matching unit 135 or inductance or resistance.But if first circuit board 11 or radio-frequency module 13 are through specific unit certification or because of other reasons, when causing changing the assembly on first circuit board 11 or radio-frequency module 13, namely the utility model provides an effective solution.
By content described in the utility model, can on second circuit board 15, the circuit of second frequency adjustment unit 151 and/or the second impedance matching unit 157 is set, and allow second frequency adjustment unit 151 and/or the second impedance matching unit 157 be electrically connected with the first frequency adjustment unit 133 of first circuit board 11 and/or the first impedance matching unit 135 respectively, after radio-frequency module 13 and first circuit board 11 are arranged on second circuit board 15, adjustment second frequency adjustment unit 151 suitable again and/or the second impedance matching unit 157, the resonance frequency that just antenna element 131 can be allowed to produce meets the requirements, and allow antenna element 131 mutually mate with the impedance of radio circuit 137.
Referring to Fig. 8, is the schematic perspective view of the another embodiment of radio-frequency unit of the impedance of the utility model adjustable antenna and antenna frequencies.The structure of the structure of the radio-frequency unit 100 described in the utility model embodiment and the radio-frequency unit 10 described in Fig. 2 is close, main difference is in the radio-frequency unit 100 described in the utility model embodiment, do not connect the earth connection 132 of first frequency adjustment unit 133, directly can not connect the first ground plane 136 of first circuit board 11.In comparison, in the antenna element 131 shown in Fig. 2, do not connect the earth connection 132 of first frequency adjustment unit 133, then directly can connect the first ground plane 136 on first circuit board 11.
Antenna element 131 specifically in radio-frequency unit 100 connects the second ground plane 153 of second circuit board 15 by the earth connection 132 and one second impedance matching unit 157 not connecting first frequency adjustment unit 133.In addition this earth connection 132 is also electrically connected signal feed-in line 134 and the first impedance matching unit 135, and is electrically connected radio circuit 137 by signal feed-in line 134 and the first impedance matching unit 135.
The first impedance matching unit 135 on first circuit board 11 is electrically connected due to the second impedance matching unit 157 on second circuit board 15.Therefore after radio-frequency module 130 is arranged at second circuit board 15, because the change of electric circumstance, when causing the impedance of antenna element 131 to produce skew, the second impedance matching unit 157 can be utilized to adjust the impedance of antenna element 131.In the utility model one embodiment, the second impedance matching unit 157 can be resistance, electric capacity, inductance or the match circuit that is made up of said modules.
Refer to Fig. 9 and Figure 10, be respectively square connection diagram and the schematic perspective view of radio-frequency unit one embodiment of the impedance of the utility model adjustable antenna and antenna frequencies.As shown in the figure, radio-frequency unit 20 mainly comprises first circuit board 21, radio-frequency module 23 and a second circuit board 25, and wherein radio-frequency module 23 is arranged on first circuit board 21, and second circuit board 25 is then arranged on the below of first circuit board 21.
In the utility model one embodiment, can be radio-frequency module 23 by the assembly on first circuit board 21 and line definitions, wherein radio-frequency module 23 comprises an antenna element 231, a plurality of earth connection 232, first frequency adjustment unit 2331, second frequency adjustment unit 2333,1 first signal feed-in line 2341,1 second signal feed-in line 2343,1 first impedance matching unit 2351,1 second impedance matching unit 2353,1 first ground plane 236, radio circuit 237 and one first headroom district 238.First headroom district 238 is positioned on first circuit board 21, and antenna element 231 is arranged in the first headroom district 238 of first circuit board 21.
Antenna element 231 described in the utility model embodiment has two different resonance frequencys, and its detailed structure can illustrate in the embodiment below.Antenna element 231 is electrically connected a plurality of earth connection 232, first signal feed-in line 2341, second signal feed-in line 2343, first frequency adjustment unit 2331 and second frequency adjustment unit 2333, wherein antenna element 231 is electrically connected first frequency adjustment unit 2331 by one of them earth connection 232, and is electrically connected second frequency adjustment unit 2333 by another earth connection 232.
First frequency adjustment unit 2331 is electrically connected antenna element 231, first signal feed-in line 2341 and at least one earth connection 232, and second frequency adjustment unit 2333 is electrically connected antenna element 231, second signal feed-in line 2343 and at least one earth connection 232.
First impedance matching unit 2351 is electrically connected the first signal feed-in line 2341, second impedance matching unit 2353 and is electrically connected the second signal feed-in line 2343.Radio circuit 237 is electrically connected the first signal feed-in line 2341 and the second signal feed-in line 2343, wherein radio circuit 237 connects antenna element 231 by the first signal feed-in line 2341 and the first impedance matching unit 2351, and connects antenna element 231 by the second signal feed-in line 2343 and the second impedance matching unit 2353.
Specifically, antenna element 231 can in order to produce the first resonance frequency and the second resonance frequency, wherein antenna element 231 transmits the signal of the first resonance frequency by the first signal feed-in line 2341 and the first impedance matching unit 2351, and is transmitted the signal of the second resonance frequency by the second signal feed-in line 2343 and the second impedance matching unit 2353.
Second circuit board 25 comprises one the 3rd frequency adjustment unit 2511, the 4th frequency adjustment unit 2513 and one second ground plane 253, wherein the second ground plane 253 is electrically connected the first ground plane 236 on first circuit board 21,3rd frequency adjustment unit 2511 first frequency adjustment unit the 2331, four frequency adjustment unit 2513 be electrically connected on first circuit board 21 is electrically connected the second frequency adjustment unit 2333 on first circuit board 21.Such as the 3rd frequency adjustment unit 2511 can first frequency adjustment unit the 2331, four frequency adjustment unit 2513 on first circuit board 21 in parallel can second frequency adjustment unit 2333 on first circuit board 21 in parallel.
First frequency adjustment unit 2331 described in the utility model, second frequency adjustment unit 2333, the 3rd frequency adjustment unit 2511 and the 4th frequency adjustment unit 2513, main in order to adjust the resonance frequency that antenna element 231 produces, such as first frequency adjustment unit 2331, second frequency adjustment unit 2333, the 3rd frequency adjustment unit 2511 and the 4th frequency adjustment unit 2513 can comprise the passive components such as electric capacity, inductance and/or resistance.Adjust the first resonance frequency of antenna element 231 generation specifically by first frequency adjustment unit 2331 and the 3rd frequency adjustment unit 2511, and adjusted the second resonance frequency of antenna element 231 generation by second frequency adjustment unit 2333 and the 4th frequency adjustment unit 2513.
When practical application, when first circuit board 21 and radio-frequency module 23 are arranged on second circuit board 25, often because the impact of second circuit board 25 size and/or other assemblies, and cause the resonance frequency of antenna element 231 on radio-frequency module 23 to produce skew, the 3rd frequency adjustment unit 2511 now on adjustable second circuit board 25 and the 4th frequency adjustment unit 2513, the resonance frequency produced with the antenna element 231 changing radio-frequency module 23.So under the prerequisite of not changing radio-frequency module 23 and first circuit board 21, the object of the resonance frequency of adjustment antenna element 231 can be reached.When first circuit board 21 or radio-frequency module 23 are through specific unit certification, or because of certain reason cannot change the assembly on first circuit board 21 or radio-frequency module 23 time, namely the utility model provides an effective solution, adjusts the resonance frequency of the antenna element 231 of radio-frequency module 23.
First circuit board 21 is arranged at second circuit board 25 and arranges in the mode of storehouse, wherein first circuit board 21 can be arranged at least one linkage unit 239, and be electrically connected the first ground plane 236 and the second ground plane 253 by linkage unit 239 or connect first circuit board and the corresponding conducting wire on second circuit board.Linkage unit 239 can run through first circuit board 21 specifically, or arrange along the side of first circuit board 21, all can reach electric connection first ground plane 236 and the second ground plane 253 or connect the object of first circuit board and the corresponding conducting wire on second circuit board, the set-up mode of certain above-mentioned linkage unit 239 is only the utility model one embodiment, is not scope of the present utility model restriction.
In the utility model one embodiment, as shown in figure 11, second circuit board 25 also can comprise one second headroom district 255, and wherein the second headroom district 255 is positioned at the vertical extended position in the first headroom district 238.When first circuit board 21 is arranged on second circuit board 25, the first headroom district 238 on first circuit board 21 can be roughly overlapping with the second headroom district 255 on second circuit board 25.In addition the 3rd frequency adjustment unit 2511 on second circuit board 25 and the 4th frequency adjustment unit 2513 connect a connection line 252 respectively, some of connection line 252 extends to the below in first circuit board 21 and/or the first headroom district 238, first frequency adjustment unit 2331 and second frequency adjustment unit 2333 is made to connect this connection line 252 by the linkage unit 239 penetrating first circuit board 21, wherein first frequency adjustment unit 2331 and second frequency adjustment unit 2333 can distinguish the 3rd frequency adjustment unit 2511 in parallel and the 4th frequency adjustment unit 2513.
In the utility model one embodiment, as shown in figure 12, antenna element 231 comprises at least one base material 2311 and plural conductive layer 2313/2315/2317, wherein each conductive layer 2313/2315/2317 can be arranged on surface or the inside of base material 2311, wherein a plurality of earth connection 232 connects each conductive layer 2313/2315/2317 of antenna element 231 respectively, first signal feed-in line 2341 and the second signal feed-in line 2343 then connect the different conductive layer 2313/2315 of two of antenna element 231 respectively, and respectively in order to transmission or the signal receiving different frequency.The region of two tool capacity effects can be formed between each conductive layer 2313/2315/2317, and produce two resonance frequencys of antenna element 231.
In the utility model one embodiment, conductive layer can comprise one first conductive layer 2313,1 second conductive layer 2315 and one the 3rd conductive layer 2317, wherein the first conductive layer 2313 is arranged on top surface, the surface or inner of base material 2311, be electrically connected first frequency adjustment unit 2331, and being electrically connected the first impedance matching unit 2351 and radio-frequency module 237 by the first signal feed-in line 2341, the first conductive layer 2313 is also electrically connected the first ground plane 236 by earth connection 232 in addition.
Second conductive layer 2315 is arranged at top surface, the surface or inner of base material 2311, be electrically connected second frequency adjustment unit 2333, and being electrically connected the second impedance matching unit 2353 and radio-frequency module 237 by the second signal feed-in line 2343, the second conductive layer 2315 also connects the first ground plane 236 by earth connection 232 in addition.In the utility model one embodiment, the first conductive layer 2313 and the second conductive layer 2315 are electrically connected the first ground plane 236 respectively by least one earth connection 232.
At least one 3rd conductive layer 2317 is arranged at basal surface, the surface or inner of base material 2311, the plane that 3rd conductive layer 2317 is arranged is different from the plane that the first conductive layer 2313 or the second conductive layer 2315 are arranged, and part the 3rd conductive layer 2317 is overlapping with part first conductive layer 2313 and part second conductive layer 2315 respectively, to form the region of two tool capacity effects.In addition the 3rd conductive layer 2317 is electrically connected first frequency adjustment unit 2331, second frequency adjustment unit 2333 and the first ground plane 236 by least one earth connection 232.
In another embodiment of the utility model, as shown in FIG. 13 to 15, second circuit board 25 also can be arranged one the 3rd impedance matching unit 2571 and/or one the 4th impedance matching unit 2573, the 3rd impedance matching unit 2571 wherein on second circuit board 25 is electrically connected the first impedance matching unit 2351 on first circuit board 21, and the 4th impedance matching unit 2573 on second circuit board 25 is then electrically connected the second impedance matching unit 2353 on first circuit board 21.Such as, the 3rd impedance matching unit 2571 on second circuit board 25 and the 4th impedance matching unit 2573 connect a connection line 252 respectively, some of connection lines 252 extend to the below of first circuit board 21, make the first impedance matching unit 2351 and the second impedance matching unit 2353 connect this connection line 252 by crossing the linkage unit 239 penetrating first circuit board 21.
First impedance matching unit 2351, second impedance matching unit 2353, the 3rd impedance matching unit 2571 and/or one the 4th impedance matching unit 2573 are main in order to adjust the impedance matching on radio-frequency module 23 between antenna element 231 and radio circuit 237, make after first circuit board 21 and radio-frequency module 23 be arranged on second circuit board 25, the impedance between antenna element 231 with radio circuit 237 remains mates mutually.
In the utility model one embodiment, the first impedance matching unit 2351, second impedance matching unit 2353, the 3rd impedance matching unit 2571 and one the 4th impedance matching unit 2573 can be the π match circuits formed by resistance, electric capacity and/or inductance.
Can be learnt by the utility model above-described embodiment, when first circuit board 21 and radio-frequency module 23 are arranged on second circuit board 25, often because the impact of second circuit board 25 size and/or other assemblies, cause the resonant frequency shift that the antenna element 231 of radio-frequency module 23 produces, or make the impedance matching between antenna element 231 and radio circuit 237 not good.And when first circuit board 21 or radio-frequency module 23 are through specific unit certification or other reasons, when causing changing the assembly on first circuit board 21 or radio-frequency module 23, namely the utility model provides an effective solution, adjust the antenna element 231 of radio-frequency module 23 resonance frequency and and radio circuit 237 between impedance matching.
By content described in the utility model, can on second circuit board 25, 3rd frequency adjustment unit 2511 is set, 4th frequency adjustment unit 2513, 3rd impedance matching unit 2571, the circuit of the 4th impedance matching unit 2573, and allow the 3rd frequency adjustment unit 2511 and/or the 3rd impedance matching unit 2571, be electrically connected with the first frequency adjustment unit 2331 of first circuit board 21 and/or the first impedance matching unit 2351 respectively, also the 4th frequency adjustment unit 2513 and/or the 4th impedance matching unit 2573 is allowed, be electrically connected with the second frequency adjustment unit 2333 of first circuit board 21 and/or the second impedance matching unit 2353 respectively, after radio-frequency module 23 and first circuit board 21 are arranged on second circuit board 25, get final product suitable adjustment the 3rd frequency adjustment unit 2511 and/or the 3rd impedance matching unit 2571, adjust a resonance frequency that antenna element 231 produces and and radio circuit 237 between impedance matching, simultaneously also can via adjustment the 4th frequency adjustment unit 2513 and/or the 4th impedance matching unit 2573, adjust another resonance frequency that antenna element 231 produces and and radio circuit 237 between impedance matching.
Referring to Figure 16, is the schematic perspective view of the another embodiment of radio-frequency unit of the impedance of the utility model adjustable antenna and antenna frequencies.The structure of the structure of the radio-frequency unit 30 described in the utility model embodiment and the radio-frequency unit 10 described in Fig. 2 is close, main difference is in the radio-frequency unit 30 described in the utility model embodiment, and the earth connection 132 of connection first frequency adjustment unit 133 does not directly connect the first ground plane 136 on first circuit board 11.In comparison, in the antenna element 131 shown in Fig. 2, the earth connection 132 of connection first frequency adjustment unit 133 can connect the first ground plane 136 on first circuit board 11.
Referring to Figure 17, is the schematic perspective view of the another embodiment of radio-frequency unit of the impedance of the utility model adjustable antenna and antenna frequencies.The structure of the structure of the radio-frequency unit 40 described in the utility model embodiment and the radio-frequency unit 10 described in Fig. 2 is close, main difference is in the radio-frequency unit 40 described in the utility model embodiment, connect the earth connection 132 of first frequency adjustment unit 133 by least one resistor 41, the resistance of such as 0 nurse difficult to understand, is electrically connected the first ground plane 136 on first circuit board 11.In comparison, in the antenna element 131 shown in Fig. 2, the earth connection 132 connecting first frequency adjustment unit 133 is the first ground plane 136 directly connected on first circuit board 11.
Refer to the direct connection between one or more object or component in the connection described in the utility model or indirectly connect, such as, can have one or more intermediate link between one or more object or component.
Described in specification perhaps, must and the not restriction of the present utility model of the wording such as change.The technical term that specification uses, mainly in order to carry out the description of specific embodiment, is not restriction of the present utility model.Odd number value that specification uses (as one and this) also can be a plurality of, unless had explicitly bright in specification.A device such as mentioned by specification can include the combination of two or more device, and the material that specification is carried then can include the mixing of many kinds of substance.
As described above, be only preferred embodiment of the present utility model, not be used for limit the utility model implement scope, namely all equalizations of doing according to shape, structure, feature and the spirit described in the utility model claim change and modify, and all should be included in claim of the present utility model.
Claims (21)
1. the radio-frequency unit of adjustable antenna impedance and antenna frequencies, is characterized in that, comprising:
One first circuit board;
One radio-frequency module, be arranged on this first circuit board, and comprise: an antenna element, a first frequency adjustment unit, one first impedance matching unit, one first headroom district, a plurality of earth connection, a radio circuit, a signal feed-in line and one first ground plane, wherein this first headroom district is positioned at this first circuit board; This antenna element is positioned at this first headroom district of this first circuit board, and is electrically connected at least one earth connection, this signal feed-in line and this first frequency adjustment unit; This first frequency adjustment unit, is electrically connected this antenna element and at least one earth connection; This first impedance matching unit, is electrically connected this signal feed-in line, and is electrically connected this radio circuit and this antenna element via this signal feed-in line; And
One second circuit board, is arranged at the below of this first circuit board, and comprises: one second ground plane, a second frequency adjustment unit, and wherein this second ground plane is electrically connected this first ground plane; This second frequency adjustment unit is electrically connected this second ground plane, and is electrically connected this first frequency adjustment unit via at least one earth connection on this first circuit board.
2. the radio-frequency unit of adjustable antenna impedance as claimed in claim 1 and antenna frequencies, it is characterized in that, the earth connection connecting described first frequency adjustment unit does not directly connect the first ground plane of described first circuit board.
3. the radio-frequency unit of adjustable antenna impedance as claimed in claim 1 and antenna frequencies, it is characterized in that, the earth connection connecting described first frequency adjustment unit is electrically connected the first ground plane of described first circuit board by a resistor.
4. the radio-frequency unit of adjustable antenna impedance as claimed in claim 1 and antenna frequencies, it is characterized in that, also comprise one second impedance matching unit, be positioned at described second circuit board, and this second impedance matching unit is electrically connected the first impedance matching unit on described first circuit board.
5. the radio-frequency unit of adjustable antenna impedance as claimed in claim 1 and antenna frequencies, it is characterized in that, described second circuit board comprises one second headroom district, is positioned at the described first vertical extended position in headroom district.
6. the radio-frequency unit of adjustable antenna impedance as claimed in claim 1 and antenna frequencies, it is characterized in that, described antenna element comprises:
At least one base material;
Plural conductive layer, be arranged at surface or the inside of this base material, wherein said at least one earth connection connects at least one conductive layer of this antenna element, described signal feed-in line connects at least another conductive layer of this antenna element, form capacity effect between plural conductive layer, and produce the resonance frequency of this antenna element.
7. the radio-frequency unit of adjustable antenna impedance as claimed in claim 1 and antenna frequencies, it is characterized in that, described antenna element comprises:
At least one base material;
At least one first conductive layer, is arranged at surface or the inside of this base material, and wherein this first conductive layer is electrically connected described first frequency adjustment unit; And
At least one second conductive layer, be arranged at surface or the inside of this base material, this second conductive layer connects described signal feed-in line and at least one earth connection, wherein between this first conductive layer and this second conductive layer in order to produce capacity effect, and form the resonance frequency of this antenna element.
8. the radio-frequency unit of adjustable antenna impedance as claimed in claim 7 and antenna frequencies, it is characterized in that, described first conductive layer and the second conductive layer are separately positioned on different planes, and described first conductive layer of part is overlapping with described second conductive layer of part to produce capacity effect, and form the resonance frequency of described antenna element.
9. the radio-frequency unit of adjustable antenna impedance as claimed in claim 7 and antenna frequencies, it is characterized in that, described first conductive layer and the second conductive layer are arranged in identical or close plane, and there is a gap between described first conductive layer and the second conductive layer to produce capacity effect, and form the resonance frequency of described antenna element.
10. the radio-frequency unit of adjustable antenna impedance as claimed in claim 1 and antenna frequencies, is characterized in that, described first frequency adjustment unit and second frequency adjustment unit comprise at least one electric capacity or at least one inductance or at least one resistance.
The radio-frequency unit of 11. adjustable antenna impedances as claimed in claim 1 and antenna frequencies, it is characterized in that, the earth connection not connecting described first frequency adjustment unit does not directly connect the first ground plane of described first circuit board, and is electrically connected the second ground plane of described second circuit board by one second impedance matching unit.
The radio-frequency unit of 12. adjustable antenna impedances as claimed in claim 11 and antenna frequencies, is characterized in that, the earth connection connecting described first frequency adjustment unit does not directly connect the first ground plane of described first circuit board.
The radio-frequency unit of 13. adjustable antenna impedances and antenna frequencies, is characterized in that, comprising:
One first circuit board;
One radio-frequency module, be arranged on this first circuit board, and comprise: an antenna element, a first frequency adjustment unit, a second frequency adjustment unit, one first impedance matching unit, one second impedance matching unit, one first headroom district, a plurality of earth connection, a radio circuit, one first signal feed-in line, one second signal feed-in line and one first ground plane, wherein this first headroom district is positioned at this first circuit board; This antenna element has two resonance frequencys, be positioned at this first headroom district of this first circuit board, and be electrically connected a plurality of earth connection, this first signal feed-in line, this second signal feed-in line, this first frequency adjustment unit and this second frequency adjustment unit; This first frequency adjustment unit, is electrically connected this antenna element, this first signal feed-in line and at least one earth connection; This second frequency adjustment unit, is electrically connected this antenna element, this second signal feed-in line and at least one earth connection; This first impedance matching unit, is electrically connected this first signal feed-in line, and is electrically connected this radio circuit and this antenna element via this first signal feed-in line; This second impedance matching unit, is electrically connected this second signal feed-in line, and is electrically connected this radio circuit and this antenna element via this second signal feed-in line; And
One second circuit board, is arranged at the below of this first circuit board, comprises; One second ground plane, one the 3rd frequency adjustment unit and one the 4th frequency adjustment unit, wherein this second ground plane is electrically connected this first ground plane; 3rd frequency adjustment unit is electrically connected this first frequency adjustment unit on this first circuit board; 4th frequency adjustment unit is electrically connected this second frequency adjustment unit on this first circuit board.
The radio-frequency unit of 14. adjustable antenna impedances as claimed in claim 13 and antenna frequencies, is characterized in that, described 3rd frequency adjustment unit described first frequency adjustment unit in parallel, described 4th frequency adjustment unit described second frequency adjustment unit in parallel.
The radio-frequency unit of 15. adjustable antenna impedances as claimed in claim 13 and antenna frequencies, is characterized in that, comprises one the 3rd impedance matching unit, is positioned at described second circuit board, and be electrically connected described first impedance matching unit.
The radio-frequency unit of 16. adjustable antenna impedances as claimed in claim 13 and antenna frequencies, is characterized in that, comprises one the 4th impedance matching unit, is positioned at described second circuit board, and be electrically connected described second impedance matching unit.
The radio-frequency unit of 17. adjustable antenna impedances as claimed in claim 13 and antenna frequencies, it is characterized in that, described second circuit board comprises one second headroom district, is positioned at the vertical extended position in described first headroom district.
The radio-frequency unit of 18. adjustable antenna impedances as claimed in claim 13 and antenna frequencies, it is characterized in that, described antenna element comprises:
At least one base material;
Plural conductive layer, be arranged at surface or the inside of this base material, described a plurality of earth connection connects each conductive layer of this antenna element respectively, described first signal feed-in line and the second signal feed-in line connect two different conductive layers respectively, with transmission or the signal receiving different frequency, wherein form the region of two tool capacity effects between plural conductive layer, and produce two resonance frequencys of this antenna element.
The radio-frequency unit of 19. adjustable antenna impedances as claimed in claim 13 and antenna frequencies, it is characterized in that, described antenna element comprises:
At least one base material;
At least one first conductive layer, is arranged at surface or the inside of this base material, and this first conductive layer is electrically connected described first frequency adjustment unit, and connects described first ground plane via described first frequency adjustment unit; This first conductive layer is electrically connected described first impedance matching unit by described first signal feed-in line, then connects described radio circuit via described first impedance matching unit;
At least one second conductive layer, is arranged at surface or the inside of this base material, and wherein this second conductive layer is electrically connected described second frequency adjustment unit, and connects described first ground plane via described second frequency adjustment unit; This second conductive layer is electrically connected described second impedance matching unit by described second signal feed-in line, then connects described radio circuit via described second impedance matching unit; And
At least one 3rd conductive layer, be arranged at surface or the inside of this base material, the plane that 3rd conductive layer is arranged is different from the plane that this first conductive layer or this second conductive layer are arranged, wherein the 3rd conductive layer is electrically connected described first frequency adjustment unit, second frequency adjustment unit and the first ground plane by least one earth connection, and part the 3rd conductive layer is overlapping with this first conductive layer of part and this second conductive layer of part respectively, to form the region of two tool capacity effects.
The radio-frequency unit of 20. adjustable antenna impedances as claimed in claim 19 and antenna frequencies, is characterized in that, described first conductive layer and the second conductive layer connect described first ground plane respectively by described at least one earth connection.
The radio-frequency unit of 21. adjustable antenna impedances as claimed in claim 13 and antenna frequencies, it is characterized in that, described first frequency adjustment unit, second frequency adjustment unit, the 3rd frequency adjustment unit and the 4th frequency adjustment unit comprise at least one electric capacity or at least one inductance or at least one resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520746791.2U CN205039812U (en) | 2015-09-24 | 2015-09-24 | Radio frequency device of adjustable antenna impedance and antenna frequency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520746791.2U CN205039812U (en) | 2015-09-24 | 2015-09-24 | Radio frequency device of adjustable antenna impedance and antenna frequency |
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| Publication Number | Publication Date |
|---|---|
| CN205039812U true CN205039812U (en) | 2016-02-17 |
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| CN201520746791.2U Active CN205039812U (en) | 2015-09-24 | 2015-09-24 | Radio frequency device of adjustable antenna impedance and antenna frequency |
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| CN (1) | CN205039812U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107294559A (en) * | 2016-04-08 | 2017-10-24 | 晶钛国际电子股份有限公司 | Communication device |
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2015
- 2015-09-24 CN CN201520746791.2U patent/CN205039812U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107294559A (en) * | 2016-04-08 | 2017-10-24 | 晶钛国际电子股份有限公司 | Communication device |
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