CN101340200A - Hertz wave transmitting/receiving device and mobile communications system thereof - Google Patents
Hertz wave transmitting/receiving device and mobile communications system thereof Download PDFInfo
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- CN101340200A CN101340200A CNA2008100217573A CN200810021757A CN101340200A CN 101340200 A CN101340200 A CN 101340200A CN A2008100217573 A CNA2008100217573 A CN A2008100217573A CN 200810021757 A CN200810021757 A CN 200810021757A CN 101340200 A CN101340200 A CN 101340200A
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Abstract
The invention relates to an electromagnetic wave transceiver and a mobile communication system thereof, the electromagnetic wave transceiver comprises: a transceiving metal sheet used for receiving and transmitting an electromagnetic wave signal, a feed-in part electrically connected with one end of the transceiving metal sheet, a signal transmission line which comprises a ground wire, and a coupling metal part electrically connected with the ground wire; wherein, an interval is arranged between the coupling metal part and the ground part, and a coupling capacitance is generated by the coupling metal part and the ground part. The coupling metal part can adopt the mode matched with input impedance of the electromagnetic wave transceiver so as to control the operation frequency and the efficiency of the electromagnetic wave transceiver. The impedance matching mode only needs to connect the coupling metal part with the ground part by the single-point mode, thereby reducing the assembly time of the electromagnetic wave transceiver and the assembly cost of a mobile communication system.
Description
Technical field
The invention belongs to the electromagnetic transceiver technical field, be specifically related to a kind of have the double frequency electromagnetic transceiver of coupling metal part and the mobile communcations system that uses this electromagnetic transceiver.
Background technology
Mobile communcations system has been important electron product during the modern lives at present.Antenna is a part necessary in the mobile communcations system; What antenna was a R-T unit at mobile communcations system is provided with the position with the trend intake type; In other words, antenna generally is arranged in the housing of mobile communcations system now.Wherein in order to increase the electromagnetic wave transmitting-receiving efficient of antenna, grounding parts (Ground) set in the part of wireless transmission end (comprising antenna and transmission line) and the mobile communcations system electrically connects, so that the signal in the mobile communcations system all has identical potential reference point and signal correctly is transmitted and receives, and then promote the efficient of antenna wireless transmission and this moves mobile communcations system Electro Magnetic Compatibility (Electromagnetic Compatibility).
In addition, impedance matching (Impedance Matching) also is a very important factor in the wireless radiofrequency transmission.The antenna that carries out wireless transmission has a fixing impedance, provides signal for the transmission line of antenna wireless transmission a fixing impedance to be arranged equally; The impedance of two different assemblies not necessarily equates and this kind is unequal will make the part signal energy can't transfer to antenna and rebounded to signal source (SignalSource) along transmission line that the coupling of impedance is to promote the part that efficiency of transmission must be considered.
Present antenna ground technology known exposes the ground wire of transmission line different piece to the open air and is electrically connected at grounding parts simultaneously.Using transmission line multipoint earthing method to make does not have the space extra impedance matching assembly to be set in wireless transmission end (comprising antenna and transmission line) in the mobile communcations system, so cause impedance between antenna and the transmission line not match and the running of corresponding mobile communcations system incomplete.
Summary of the invention
The invention provides a kind of metal part that is coupled and to control the electromagnetic transceiver and the mobile communcations system thereof of electromagnetic transceiver frequency of operation and efficient in the mode of input impedance of coupling electromagnetic transceiver, its impedance matching mode only needs the coupling metal part is engaged in grounding parts in the single-point mode, has therefore reduced the built-up time of electromagnetic transceiver and the assembly cost of mobile communcations system.
The technical solution adopted in the present invention is as follows:
A kind of electromagnetic transceiver is used for a mobile communcations system, and this mobile communcations system has a grounding parts, it is characterized in that this electromagnetic transceiver comprises:
One transmitting-receiving sheet metal supplies to accept and launch an electromagnetic wave signal;
One feeding portion is electrically connected at an end of this transmitting-receiving sheet metal;
One signal transmission line comprises a ground wire; And
One coupling metal part is electrically connected at this ground wire;
Wherein, have one between this coupling metal part and this grounding parts at interval, this coupling metal part and this grounding parts produce a coupling capacitance.
Described electromagnetic transceiver comprises a dielectric material assembly, and it is arranged in the interval of described coupling metal part and this grounding parts.
Concretely, the grounding parts of this electromagnetic transceiver, coupling metal part and dielectric material inter-module have a bonding area, and coupling capacitance is formed between grounding parts and the coupling metal part.One end of this dielectric material assembly is connected in a surface of coupling metal part, and the other end of this dielectric material assembly is connected in grounding parts, and the thickness of non-conductive assembly is between 0.1mm to 0.3mm.This dielectric material assembly can be selected non-conductive glue, pottery or gas for use.This electromagnetic transceiver also can further comprise a connector, is arranged at this coaxial line than the end away from this feeding portion, and is electrically connected at signal line and ground wire.Signal transmission line can comprise a coaxial line, and this coaxial line comprises a signal line and ground wire, and the signal linear system is electrically connected at feeding portion, and ground wire is arranged at outside the signal line, and the coupling metal part is electrically connected at the part of ground wire near feeding portion.This electromagnetic transceiver also can comprise one first frequency of operation, one second frequency of operation and frequency of operation ratio, this first frequency of operation is less than second frequency of operation, this frequency of operation is than being the numerical value of second frequency of operation divided by first frequency of operation, the length of the metal part that wherein is coupled has an inverse relation with the frequency of operation ratio, and the length that the coupling metal part is radially extended can be between between the 10mm to 20mm.The transmitting-receiving sheet metal can comprise one first receiving and transmitting part, is electrically connected at feeding portion and extends from feeding portion; And one second receiving and transmitting part, being electrically connected at this first receiving and transmitting part, this first receiving and transmitting part extends and contains the plural number bending certainly.
A kind of mobile communcations system comprises a grounding parts and an electromagnetic transceiver, it is characterized in that described electromagnetic transceiver comprises:
One transmitting-receiving sheet metal supplies to accept and launch an electromagnetic wave signal;
One feeding portion is electrically connected at an end of this transmitting-receiving sheet metal;
One signal transmission line comprises a ground wire;
One coupling metal part is electrically connected at this ground wire;
This mobile communcations system also comprises a signal processing circuit plate, is electrically connected at this electromagnetic transceiver, for handling this electromagnetic wave signal;
Wherein, have one between this coupling metal part and this grounding parts at interval, this coupling metal part and this grounding parts produce a coupling capacitance.
Described electromagnetic transceiver more comprises a dielectric material assembly, and it is arranged in the interval of described coupling metal part and this grounding parts.。
Described grounding parts, coupling metal part and dielectric material inter-module have a bonding area, and described coupling capacitance is formed between this grounding parts and this coupling metal part.
One end of described dielectric material assembly is connected in a surface of this coupling metal part, and the other end of this dielectric material assembly is connected in grounding parts, and the thickness of dielectric material assembly is between 0.1mm to 0.3mm.
Described dielectric material assembly select for use non-conductive glue, pottery or gas three one of them.
Described signal transmission line comprises a coaxial line, and this coaxial line comprises a signal line and ground wire, and this signal line is electrically connected at described feeding portion, and this ground wire is arranged at outside the signal line.
Described electromagnetic transceiver more comprises:
One first frequency of operation;
One second frequency of operation, this first frequency of operation be less than this second frequency of operation; And
One frequency of operation ratio is the numerical value of this second frequency of operation divided by this first frequency of operation;
Wherein the length of this coupling metal part has an inverse relation with this frequency of operation ratio.
The length that described coupling metal part is radially extended is between 10mm to 20mm.
Say that further in this mobile communcations system, this electromagnetic transceiver can further comprise a connector, be arranged at this coaxial line away from an end of this feeding portion, power supply property connection coaxial line is in the signal processing circuit plate.This mobile communcations system also can comprise a housing, and wherein electromagnetic transceiver is arranged at the position of enclosure interior near this housing bottom, and the signal processing circuit plate is arranged between housing and the electromagnetic transceiver.Between the electromagnetic transceiver of this mobile communcations system and housing, can form a headroom district.
Among the present invention, electromagnetic transceiver can reach different first frequency of operation and second frequency of operation by the length that changes the coupling metal part.The coupling metal part can be controlled the frequency of operation and the efficient of electromagnetic transceiver in the mode of input impedance of coupling electromagnetic transceiver.This impedance matching mode only needs the coupling metal part is engaged in grounding parts in the single-point mode, has therefore reduced the built-up time of electromagnetic transceiver and the assembly cost of mobile communcations system.
Description of drawings
Fig. 1 is the schematic diagram of mobile communcations system of the present invention and electromagnetic transceiver embodiment;
Fig. 2 is the schematic diagram of electromagnetic transceiver preferred embodiment of the present invention;
Fig. 3 A is the schematic diagram of mobile communcations system of the present invention, and wherein mobile communcations system has comprised the electromagnetic transceiver with coupling metal part;
Fig. 3 B is the detail drawing of coupling metal part and grounding parts joint;
Fig. 4 A is another schematic diagram of mobile communcations system of the present invention;
Fig. 4 b is the profile of tangent line B-B ' among Fig. 4 a, and wherein the headroom district is formed between electromagnetic transceiver and the housing;
Fig. 5 is the return loss measurement data of electromagnetic transceiver shown in Figure 2;
Fig. 6 is the plural measurement data of the return loss (Return Loss) of electromagnetic transceiver shown in Figure 2, and wherein plural measurement data is corresponding to the coupling metal part with different length.
Embodiment
Fig. 1 is a kind of mobile communcations system 300 provided by the present invention, and wherein mobile communcations system 300 comprises electromagnetic transceiver 100.Electromagnetic transceiver 100 among Fig. 1 comprises concealed antenna, as antenna and other suitable assemblies such as antenna of single dipole, double-doublet antenna, inverted F shaped antennas; But be not limited thereto.In addition, electromagnetic transceiver 100 is electrically connected at mobile communcations system 300 and has one plately among Fig. 1, but is not limited thereto; Electromagnetic transceiver 100 also can have other suitable shape.Mobile communcations system 300 general references are used the mobile communcations system of radio frequency (Radio Frequency) signal, comprise the dual-band mobile phone of 2G systems such as using GSM900 system and DCS1800, but are not limited thereto; Mobile communcations system 300 also can comprise other 3G mobile.In addition, mobile communcations system also comprises the single-frequency mobile phone that only uses GSM900 system or DCS1800 system.
Fig. 2 is the schematic diagram of electromagnetic transceiver 100 preferred embodiments of the present invention.Electromagnetic transceiver 100 comprises first receiving and transmitting part 121 and second receiving and transmitting part 122.In the present embodiment, electromagnetic transceiver 100 is mainly used in emission and receives double frequency (Dual-Band) signal that system sent; Therefore the shape of first receiving and transmitting part 121 and second receiving and transmitting part 122 can be through adjusting so that transmitting-receiving sheet metal 120 be fit to launch and receive the signal of dual-frequency system, and wherein the employed signal frequency of dual-frequency system is between 800MHz and 1900MHz.In present embodiment shown in Figure 2, electromagnetic transceiver 100 is a double frequency antenna of single dipole, but is not limited thereto.Electromagnetic transceiver 100 comprises coaxial line 110, transmitting-receiving sheet metal 120 and coupling metal part 130.As shown in Figure 2, in the present embodiment, coaxial line 110 is for to be used for the signal transmission line of transmission electronic signal, but is not limited thereto; Signal transmission line also can be known signal transmission lines such as digital coaxial line.Coaxial line 110 cooperates with connector 111, and comprises signal line 112, isolation amboceptor 113, ground wire 114 and isolate outer 115.Connector 111 is arranged at an end of coaxial line 110, is used for engaging and is electrically connected at extraneous signal source, to be responsible for the signal contact between electromagnetic transceiver 100 and the extraneous signal source.Signal line 112 comprises known transmission wire rods such as copper cash, and wherein an end of signal line 112 is electrically connected at the signal end of connector 111, and the other end is electrically connected at the feeding portion 123 of transmitting-receiving sheet metal 120.Isolate amboceptor 113 and comprise dielectrics (Dielectric) such as polyethylene or Teflon, and coat the surface of signal line 112.Ground wire 114 is electrically connected at coupling metal part 130 and is wound in the surface that isolates amboceptor 113; In other words ground wire 114 is to be arranged at outside the signal line 112.Isolate amboceptor 113 and be arranged between signal line 112 and the ground wire 114, and with signal line 112 electrical isolation in ground wire 114.Isolate skin 115 and comprise the materials that are electrically insulated such as plastics, be arranged at the surface of ground wire 114, be used to protect signal line 112, isolate amboceptor 113 and ground wire 114 and electrical isolation coaxial line 110 in extraneous signal source; Wherein part isolation outer 115 is stripped from exposed portion ground wire 114.In the present embodiment, single coaxial line 110 is used for transmission signal and ground connection simultaneously, but is not limited thereto; Two kinds of different electric wires also can replace coaxial line 110 and be respectively applied for replacing signal line 112 and ground wire 114.
At transmitting-receiving sheet metal 120 shown in Figure 2 is to be used for carrying out the wireless signal transmission with extraneous other wireless device.The wireless signal that transmitting-receiving sheet metal 120 is received transfers to signal processing circuit plate (end illustrates) for processing via above-mentioned coaxial line 110 wire rods such as grade; Similarly, signal processing circuit plate (not illustrating) need be to transfer to transmitting-receiving sheet metal 120 via coaxial line 110 wire rods such as grade with the signal of wireless mode transmission.As shown in Figure 2, transmitting-receiving sheet metal 120 comprises first receiving and transmitting part 121, second receiving and transmitting part 122, feeding portion 123, wherein first receiving and transmitting part 121 and second receiving and transmitting part 122 are a metallic conductor, and its material comprises gold, silver, copper or their materials such as alloy, but is not limited thereto; First receiving and transmitting part 121 is preferably a banded rectangle, and the one end is electrically connected at feeding portion 123, in order to accept and input signal.Second receiving and transmitting part 122 extends from first receiving and transmitting part 121; In addition, second receiving and transmitting part 122 comprises plural number bending and plural irregularly shaped, and then comprises the line segment of different length and size.Thus, electromagnetic transceiver 100 can be received and dispatched sheet metal 120 and change the length and the shape of receiving and dispatching sheet metal 120 by complications, and changes the CURRENT DISTRIBUTION (Current Distribution) of transmitting-receiving sheet metal 120 and the center tranmitting frequency of electromagnetic transceiver 100.Electromagnetic transceiver 100 can be received and dispatched sheet metal 120 and change the length and the shape of receiving and dispatching sheet metal 120 by complications, and changes the CURRENT DISTRIBUTION (Current Distribution) of transmitting-receiving sheet metal 120 and the signal that electromagnetic transceiver 100 is launched and accepted.
Change of shape along with transmitting-receiving sheet metal 120, the radiation resistance (RadiationResistance) of transmitting-receiving sheet metal 120 and inductance also change along with the shape of transmitting-receiving sheet metal 120, cause that eventually the impedance between transmitting-receiving sheet metal 120 and the coaxial line 110 does not match.This impedance does not match the change of CURRENT DISTRIBUTION among the change transmitting-receiving sheet metal 120, and then changes radiation benefit, frequency range and a shape of transmitting-receiving sheet metal 120.Therefore the present invention improves the impedance matching of receiving and dispatching between sheet metal 120 and the coaxial line 110 with a coupling metal part 130.
As shown in Figure 2, coupling metal part 130 is coupled in the ground wire 114 of coaxial line 110, and an end of the metal part that wherein is coupled 130 is electrically connected at ground wire 114 by modes such as welding or engagings, and the other end then is that coupling (non-short circuit) is not in grounding parts (illustrating).In the present embodiment, coupling metal part 130 is to be that extend radially to reach linear fashion at the center with coaxial line 110, for engaging with the grounding parts 301 of mobile communcations system 300, the position that the metal part that wherein is coupled 130 and ground wire 114 electrically connects is preferable to be positioned near feeding portion 123 but not to contact the position of (short circuit) with signal line 112, but is not limited thereto.In the present embodiment, coupling metal part 130 is a rectangle, but is not limited thereto; Coupling metal part 130 also can comprise ellipse, square or other suitable shape.Coupling metal part 130 has a coupling metal part length S, this coupling metal part length S electrically connects the distance with respect to the other end of an end for coupling metal part 130 and ground wire 114, this coupling metal part length S can change the impedance matching along with institute's palpus between transmitting-receiving sheet metal 120 and the coaxial line 110, preferable between 10mm between 20mm.The width of coupling metal part 130 is preferably 5mm, but is not limited thereto.The coupling metal part 130 preferable grounding parts that are connected in mobile communcations system 300 301 that are used for non-short circuit.
As shown in Figure 2, in the present embodiment, but the operation frequency of double frequency communication mode comprises 850MHz and 1700MHz, but is not limited thereto; In different embodiment, but the operation frequency of double frequency communication mode also can comprise the combination of 900MHz and 1800MHz or other suitable frequency.Electromagnetic transceiver 100 further comprises first frequency of operation, second frequency of operation and frequency of operation ratio in the present embodiment; Lower frequency in the corresponding double frequency of first frequency of operation wherein, higher frequency in the corresponding double frequency of second frequency of operation.Frequency of operation is than being the numerical value of this second frequency of operation divided by this first frequency of operation, and in the present embodiment, frequency of operation equals 2 than preferable, but is not limited thereto.In addition, in different embodiment, frequency of operation changes than the variation with first frequency of operation or second frequency of operation.
Fig. 3 A is depicted as the schematic diagram of mobile communcations system 300 of the present invention, and wherein mobile communcations system 300 has comprised the electromagnetic transceiver 100 with coupling metal part.In the embodiment shown in Fig. 3 A, mobile communcations system 300 is a slide phone, but is not limited thereto.In the present embodiment, mobile communcations system 300 has comprised the display circuit board 310 and the signal processing circuit plate 320 of mutual overlapping, but is not limited thereto.Flexible printed wiring board 330 (Flexible Printed Circuit) is arranged between display circuit board 310 and the signal processing circuit plate 320.One end of flexible printed wiring board 330 is electrically connected at display circuit board 310, and the other end then is electrically connected at signal processing circuit plate 320, with the signal between two circuit boards of transmitted in both directions.As shown in Figure 3A, electromagnetic transceiver 100 sees through connector 111 and is electrically connected at signal processing circuit plate 320, transfer to transmitting-receiving sheet metal 120 for emission with the signal of accepting signal processing circuit plate 320 and with it, receive and dispatch the signal that sheet metal 120 accepted simultaneously and also transfer to signal processing circuit plate 320, display circuit board 310 and signal processing circuit plate 320 via signal line 112.
Fig. 3 B is depicted as the detail drawing of coupling metal part 130 and grounding parts 301 joints.Shown in Fig. 3 A and Fig. 3 B, a dielectric material assembly 500 is arranged between coupling metal part 130 and the grounding parts 301.One end of dielectric material assembly 500 is connected in coupling metal part 130, and the other end is connected in grounding parts 301.The dielectric material assembly 500 preferable non-conductive assemblies that comprise as non-conductive glue, are bonding on grounding parts 301 in order to the metal part 130 that will be coupled, but are not limited thereto; The material of dielectric material assembly 500 also can comprise non-conductive ceramic, known radio frequency or microwave base plate or other has non-conducting material.In different embodiment, the present invention also can will keep a space between coupling metal part 130 and the grounding parts 301, make dielectric material assembly 500 for being arranged at the normal air between coupling metal part 130 and the grounding parts 301.
In formula (1), ε 0 (8.85 * 10-12 farad/rice) is the dielectric coefficient of a vacuum.ε r is a dielectric coefficient and can changes along with the material of dielectric material assembly 500.A (unit for square metre) is representing the bonding area between the metal part 130 that is coupled, grounding parts 301 and the dielectric material assembly 500.D is representing the interval that is coupled between metal part 130 and the grounding parts 301, and the thickness of dielectric material assembly 500 is same as the interval d between coupling metal part 130 and the grounding parts 301 in fact, and therefore interval d is same as the thickness of dielectric material assembly 500.Therefore can learn that by formula (1) coupling capacitance C is directly proportional with the bonding area that is coupled between metal part 130, grounding parts 301 and the dielectric material assembly 500.Coupling capacitance C also is inversely proportional to the thickness of dielectric material assembly 500 simultaneously.
In addition, the transmitting-receiving sheet metal 120 in different embodiment may have different structures and shape, also therefore different impedance (Impedance) may be arranged respectively; And dielectric material assembly 500 need be made corresponding adjustment on size, thickness or material, to reach impedance matching.In the present embodiment, the thickness of dielectric material assembly 500 is preferable between 0.1mm and 0.3mm, but is not limited thereto; Thickness also can be adjusted to greater than 0.3mm or less than 0.1mm along with the needs of impedance matching.In addition, dielectric material assembly 500 and the coupling metal part 130 or and grounding parts 301 between bonding area changed further to reach impedance matching.Dielectric material assembly 500 and the preferable bonding area that is equal to dielectric material assembly 500 and grounding parts 301 of the bonding area of coupling metal part 130, but be not limited thereto; The bonding area of dielectric material assembly 500 and coupling metal part 130 can be greater than or less than the bonding area of dielectric material assembly 500 and grounding parts 301.
Fig. 4 A is another schematic diagram of mobile communcations system 300 of the present invention.Shown in Fig. 4 A, mobile communcations system 300 of the present invention further comprises a housing 340, in order to hold and to protect electromagnetic transceiver 100, signal processing circuit plate 320 and display circuit board 310.In the present embodiment, electromagnetic transceiver 100 is arranged at housing 340 inner positions near housing 340 1 ends, but is not limited thereto; Electromagnetic transceiver 100 also can be arranged at the other end or other suitable position of housing 340 inside.Wherein, coupling metal part 130 is arranged at grounding parts 301 tops of housing 340.
Fig. 4 B is the profile of tangent line B-B ' among Fig. 4 A.Shown in Fig. 4 B, a headroom district 350 with a definition space between electromagnetic transceiver 100 and housing 340.Preferable comprising among the headroom district 350 as normal air, but be not limited thereto; Also can comprise other gas with various or other suitable material among the headroom district 350.In addition, partial shell 340 is near the part of electromagnetic transceiver 100 areas, preferablely comprises nonmetallic materials such as plastics or pottery, but is not limited thereto; This partial shell 340 also can comprise other suitable material.Figure 5 shows that the measurement data of the return loss (Return Loss) of electromagnetic transceiver 100 shown in Fig. 3 A, this measurement data is also representing electromagnetic transceiver 100 under the different operating frequency, the signal reflection that does not match and brought because of impedance own.In addition, be coupled the in the present embodiment length S (as shown in Figure 2) of metal part 130 is 15mm.As shown in Figure 5, the frequency of operation that return loss is minimum is respectively 900MHz and 1800MHz, and these two frequencies are all corresponding to the first above-mentioned frequency of operation and second frequency of operation.
Figure 6 shows that the measurement data of the return loss (Return Loss) of electromagnetic transceiver 100 shown in Fig. 3 A; Wherein, therefore coupling metal part 130 has under the different length S (as shown in Figure 2) also that electromagnetic transceiver 100 has different signal reflections.In different embodiment shown in Figure 6, the length of coupling metal part 130 all has the return loss of different pieces of information and shape to S=15mm from S=0mm (not having coupling metal part 130); Also the frequency range of the frequency of operation that therefore return loss is minimum and this frequency of operation is all inequality.As shown in Figure 6, electromagnetic transceiver 100 of the present invention can reach different first frequency of operation and second frequency of operation by the length that changes coupling metal part 130.
Coupling metal part of the present invention can be controlled the frequency of operation and the efficient of electromagnetic transceiver 100 in the mode of input impedance of coupling electromagnetic transceiver 100.In addition, this impedance matching mode only needs the coupling metal part is engaged in grounding parts 301 in the single-point mode, has also therefore reduced the built-up time of electromagnetic transceiver 100 and the assembly cost of mobile communcations system 300.
Claims (10)
1. an electromagnetic transceiver is used for a mobile communcations system, and this mobile communcations system has a grounding parts, it is characterized in that this electromagnetic transceiver comprises:
One transmitting-receiving sheet metal supplies to accept and launch an electromagnetic wave signal;
One feeding portion is electrically connected at an end of this transmitting-receiving sheet metal;
One signal transmission line comprises a ground wire; And
One coupling metal part is electrically connected at this ground wire;
Wherein, have one between this coupling metal part and this grounding parts at interval, this coupling metal part and this grounding parts produce a coupling capacitance.
2. electromagnetic transceiver according to claim 1 is characterized in that described electromagnetic transceiver comprises a dielectric material assembly, and it is arranged in the interval of described coupling metal part and this grounding parts.
3. a mobile communcations system comprises a grounding parts and an electromagnetic transceiver, it is characterized in that described electromagnetic transceiver comprises:
One transmitting-receiving sheet metal supplies to accept and launch an electromagnetic wave signal;
One feeding portion is electrically connected at an end of this transmitting-receiving sheet metal;
One signal transmission line comprises a ground wire;
One coupling metal part is electrically connected at this ground wire;
This mobile communcations system also comprises a signal processing circuit plate, is electrically connected at this electromagnetic transceiver, for handling this electromagnetic wave signal;
Wherein, have one between this coupling metal part and this grounding parts at interval, this coupling metal part and this grounding parts produce a coupling capacitance.
4. mobile communcations system according to claim 3 is characterized in that described electromagnetic transceiver more comprises a dielectric material assembly, and it is arranged in the interval of described coupling metal part and this grounding parts.
5. mobile communcations system according to claim 4 is characterized in that described grounding parts, coupling metal part and dielectric material inter-module have a bonding area, and described coupling capacitance is formed between this grounding parts and this coupling metal part.
6. mobile communcations system according to claim 4, it is characterized in that an end of described dielectric material assembly is connected in a surface of this coupling metal part, the other end of this dielectric material assembly is connected in grounding parts, and the thickness of dielectric material assembly is between 0.1mm to 0.3mm.
7. mobile communcations system according to claim 4, it is characterized in that described dielectric material assembly select for use non-conductive glue, pottery or gas three one of them.
8. mobile communcations system according to claim 3 is characterized in that described signal transmission line comprises a coaxial line, and this coaxial line comprises a signal line and ground wire, and this signal line is electrically connected at described feeding portion, and this ground wire is arranged at outside the signal line.
9. mobile communcations system according to claim 3 is characterized in that described electromagnetic transceiver more comprises:
One first frequency of operation;
One second frequency of operation, this first frequency of operation be less than this second frequency of operation; And
One frequency of operation ratio is the numerical value of this second frequency of operation divided by this first frequency of operation;
Wherein the length of this coupling metal part has an inverse relation with this frequency of operation ratio.
10. mobile communcations system according to claim 3 is characterized in that length that described coupling metal part radially extends is between 10mm to 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100217573A CN101340200A (en) | 2008-08-12 | 2008-08-12 | Hertz wave transmitting/receiving device and mobile communications system thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100217573A CN101340200A (en) | 2008-08-12 | 2008-08-12 | Hertz wave transmitting/receiving device and mobile communications system thereof |
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| CN101340200A true CN101340200A (en) | 2009-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2008100217573A Pending CN101340200A (en) | 2008-08-12 | 2008-08-12 | Hertz wave transmitting/receiving device and mobile communications system thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409836A (en) * | 2014-12-09 | 2015-03-11 | 成都国蓉科技有限公司 | Electromagnetic wave transmitter |
| WO2021190333A1 (en) * | 2020-03-24 | 2021-09-30 | 安川昌昭 | Electromagnetic wave transceiving apparatus |
-
2008
- 2008-08-12 CN CNA2008100217573A patent/CN101340200A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409836A (en) * | 2014-12-09 | 2015-03-11 | 成都国蓉科技有限公司 | Electromagnetic wave transmitter |
| WO2021190333A1 (en) * | 2020-03-24 | 2021-09-30 | 安川昌昭 | Electromagnetic wave transceiving apparatus |
| TWI754944B (en) * | 2020-03-24 | 2022-02-11 | 日本商英幸技術股份有限公司 | Electromagnetic wave transceiving apparatus |
| CN114747089A (en) * | 2020-03-24 | 2022-07-12 | 安川昌昭 | Electromagnetic wave transmitting and receiving device |
| AU2021240652B2 (en) * | 2020-03-24 | 2023-06-15 | Ming Lu | Electromagnetic wave transceiving apparatus |
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Open date: 20090107 |