CN101800355B - Feed-in device of monopole antenna as well as relevant analog broadcast playing system and integrating system - Google Patents
Feed-in device of monopole antenna as well as relevant analog broadcast playing system and integrating system Download PDFInfo
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- CN101800355B CN101800355B CN 200910008605 CN200910008605A CN101800355B CN 101800355 B CN101800355 B CN 101800355B CN 200910008605 CN200910008605 CN 200910008605 CN 200910008605 A CN200910008605 A CN 200910008605A CN 101800355 B CN101800355 B CN 101800355B
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Abstract
The invention relates to a feed-in device of a monopole antenna, as well as a relevant analog broadcast playing system and an integrating system, in particular to a feed-in device used for a monopole antenna. The monopole antenna comprises a radiating unit and a grounding unit used for transmitting a multimedia signal to a multimedia playing device coupled to the radiating unit. The feed-in device comprises a first feed-in unit and a second feed-in unit, wherein the first feed-in unit is coupled to an inner lead of a coaxial cable and used for feeding the multimedia signal transmitted through the coaxial cable into the radiating unit; and the second feed-in unit is coupled to a net-shaped conductor of the coaxial cable and used for connecting the grounding unit. The feed-in device with the perfect grounding function completely feeds an analog broadcast signal into the analog broadcast playing system in a signal conduction mode, and a user does not need to disassemble the shell or the interior decorations of a vehicle and follow the specification restrictions of the FCC (Federal Communications Commission), i.e. the analog broadcast playing system can be shared to play digital satellite broadcasting program contents.
Description
Technical field
The present invention relates to a kind of feedthrough for unipole antenna and relevant analog broadcasting Play System and integration system, relate in particular to a kind of feedthrough and relevant analog broadcasting Play System and integration system that uses conduction pattern transmission signal to a unipole antenna.
Background technology
Digital satellite broadcasting (Digital Satellite Broadcast) technology is the third generation broadcasting after amplitude modulation, FM broadcasting, it can be by preferable frequency spectrum service efficiency, solving for a long time, broadcasting station channel obtains difficult problem, while reaches additional all function of data, services as the tonequality as the CD, also can satisfy people for the broadcast medium multiple demands.On the other hand, because the coverage of digital satellite broadcasting is extremely wide, even be in bleak and desolate desert or vastness is marine greatly, still can receive satellite broadcast signal, therefore, satellite broadcasting has the trend that replaces analog broadcasting.
Yet general vehicle is when dispatching from the factory, in view of cost consideration at present, the standard of yet the digital satellite broadcast receiver not being classified as multimedia apparatus for vehicle (Head Unit) mostly is equipped with, therefore, the user need be installed the digital satellite broadcast receiver additional usually, can listen to digital broadcast program.In order to save cost and to install shared space, known technology provides a kind of mode, and it plays the satellite broadcasting program that receives through the digital satellite broadcast receiver by multimedia apparatus for vehicle.For instance, please refer to Fig. 1, Fig. 1 is the schematic diagram that concerns of 120 of known one automobile-used satellite radio 110 and automobile-used frequency modulation multimedia devices.Automobile-used satellite radio 110 comprises a satellite antenna 112, a satellite broadcasting conversion equipment 114 and a unipole antenna 116, and automobile-used frequency modulation multimedia device 120 comprises a frequency-modulated antenna 122, FM receiver 124 and a loud speaker 126.Satellite antenna 112 is used for receiving a digital satellite broadcasting signal S
SSatellite broadcasting conversion equipment 114 is used for the digital satellite broadcasting signal S that will receive
SDemodulation converts a FM signal S to
S_FM, and be sent to automobile-used frequency modulation multimedia device 120 via unipole antenna 116 radiation.Frequency-modulated antenna 122 receives FM signal S
S_FMAfter, FM receiver 124 can demodulate audio signal S
Audio, play for loud speaker 126.Therefore, by automobile-used satellite radio 110, the user can play broadcast program contents by the automobile-used frequency modulation multimedia device 120 of former factory.Yet, usually can be because there be suitable distance the ornaments position between the unipole antenna 116 of automobile-used satellite radio 110 and the frequency-modulated antenna 122, through the decay that propagate in the space, the energy that makes frequency-modulated antenna 122 receive is very little.And, unipole antenna 116 utilizes the mode of radiation to transfer its energy to frequency-modulated antenna 122, its emittance belongs to artificial radiation, must meet FCC (The Federal CommunicationsCommission, FCC) standard of the electromagnetic compatibility of Zhi Dinging (EMC)/electromagnetic interference (EMI).Briefly, in the case, emittance can't unrestrictedly increase, and therefore, because of the restriction of environment for use, causes transmitting the usefulness instability easily.
In known technology, except the mode of using radiation, still have by holding wire directly to embed in the automobile-used frequency modulation multimedia device 120 to transmit FM signal S
S_FMThe mode of playing, thus, though can obtain the good electron characteristic, but because the automobile-used frequency modulation multimedia device 120 of former factory is for being integrated in car shell, the interior dress, connect other holding wires again as desire, necessary dismounting vehicle shell or interior dress, and change original wiring configuration, for general user, very big puzzlement and inconvenience will be caused.In this case, known technology also provides a kind of improvement mode, as shown in Figure 2.Under the prerequisite of not dismounting vehicle shell or interior dress, use the coaxial cable line 202 with anchor clamps 204 to replace unipole antennas 116, clamp frequency-modulated antenna 122 by anchor clamps 204, with FM signal S
S_FMBe sent to the automobile-used frequency modulation multimedia device 120 from satellite broadcast receiver (satellite broadcasting conversion equipment) 114, yet, frequency-modulated antenna 122 appearances have insulator usually, and be used as in the coaxial wire 202 that earthy netted conductor still independently exists and with the ground connection position of frequency-modulated antenna 122 without any electric connection, therefore, this mode still has the not good problem of energy conduction feed-in characteristic.
In brief, in the known technology, desire passes to multimedia apparatus for vehicle with the multi-media signal of other multimedia devices, use radiation mode to be subject to environmental limit, and cause transmitting the usefulness instability easily, if desire to connect again other holding wires, then must the dismounting vehicle shell or interior dress, and change original wiring configuration, therefore, need there be a facility and the good device of transmission usefulness to solve the problems referred to above.
Summary of the invention
Therefore, the invention provides a kind of feedthrough for unipole antenna and relevant analog broadcasting Play System and integration system.
The present invention discloses a kind of feedthrough for a unipole antenna, and this unipole antenna includes a radiating element and a ground unit, is used for a multi-media signal is sent to a multimedia playing apparatus that is coupled to this radiating element.This feedthrough includes one first feed-in unit and one second feed-in unit.This first feed-in unit is coupled to an inside conductor of a coaxial cable, is used for this this radiating element of multi-media signal feed-in that will transmit via this coaxial cable.This second feed-in unit is coupled to a netted conductor of this coaxial cable, is used for connecting this ground unit.
The present invention also discloses a kind of analog broadcasting Play System, includes a unipole antenna, a feedthrough and a multimedia playing apparatus.This unipole antenna includes a radiating element and a ground unit.This feedthrough includes one first feed-in unit and one second feed-in unit.This first feed-in unit is coupled to an inside conductor of a coaxial cable, is used for this radiating element of multi-media signal feed-in that will transmit via this coaxial cable.This second feed-in unit is coupled to a netted conductor of this coaxial cable, is used for connecting this ground unit.This multimedia playing apparatus is coupled to this radiating element, is used for demodulation and play this multi-media signal.
The present invention also discloses a kind of numeral and analog broadcasting integration system, includes a digital broadcasting conversion equipment and an analog broadcasting Play System.This digital broadcasting conversion equipment is used for receiving a digital satellite broadcasting signal, and converts this digital satellite broadcasting signal to an analog broadcast signal, to be sent to an analog broadcasting Play System by a coaxial cable.This analog broadcasting Play System includes a unipole antenna, a feedthrough and a multimedia playing apparatus.This unipole antenna includes a radiating element and a ground unit.This feedthrough includes one first feed-in unit and one second feed-in unit.This first feed-in unit is coupled to an inside conductor of this coaxial cable, is used for this this radiating element of analog broadcast signal feed-in.This second feed-in unit is coupled to a netted conductor of this coaxial cable, is used for connecting this ground unit.This multimedia receiving system is coupled to this radiating element, is used for demodulation and play this analog broadcast signal.
Of the present invention have a feedthrough that improves grounding function, by the signal conduction pattern with analog broadcast signal feed-in analog broadcasting Play System intactly, the user will not need car shell or the interior dress of dismounting automobile, more needn't follow the specification limits of FCC, can share the analog broadcasting Play System and play the digital satellite broadcasting programme content.In this case, except easy-to-use, can increase the energy of feed-in simultaneously, and increase the feed-in energy greatly to being radiated the ratio of dimensional energy, therefore reduce the influence of FCC restriction effectively, and have excellent characteristic electron.
Description of drawings
Fig. 1 is the schematic diagram that concerns between known one automobile-used satellite radio and an automobile-used frequency modulation multimedia device.
Fig. 2 is that between known one automobile-used satellite radio and an automobile-used frequency modulation multimedia device another concerns schematic diagram.
Fig. 3 is an analog broadcasting Play System of the embodiment of the invention and the relational view of a digital satellite broadcasting conversion equipment.
Fig. 4 (a) is the schematic diagram of an embodiment of feedthrough among Fig. 3.
Fig. 4 (b) is the schematic diagram of an equivalent transmission line of conduction pattern among Fig. 4 (a).
Fig. 5 (a) is the schematic diagram of another embodiment of feedthrough among Fig. 3.
Fig. 5 (b) is the schematic diagram of an equivalent transmission line of conduction pattern among Fig. 5 (a).
Fig. 6 (a) is the schematic diagram of another embodiment of feedthrough among Fig. 3.
Fig. 6 (b) is the schematic diagram of an equivalent transmission line of conduction pattern among Fig. 6 (a).
Fig. 7 (a) is the schematic diagram of another embodiment of feedthrough among Fig. 3.
Fig. 7 (b) is the schematic diagram of an equivalent transmission line of conduction pattern among Fig. 7 (a).
Fig. 8 (a) is the schematic diagram of another embodiment of feedthrough among Fig. 3.
Fig. 8 (b) is the schematic diagram of an equivalent transmission line of conduction pattern among Fig. 8 (a).
Fig. 9 (a) is the schematic diagram of another embodiment of feedthrough among Fig. 3.
Fig. 9 (b) is the schematic diagram of an equivalent transmission line of conduction pattern among Fig. 9 (a).
Figure 10 (a) is the schematic diagram of another embodiment of feedthrough among Fig. 3.
Figure 10 (b) is the schematic diagram of an equivalent transmission line of conduction pattern among Figure 10 (a).
Figure 11 is a measurement result of embodiment of the invention feed-in characteristic under different frequency.
The primary clustering symbol description:
110 automobile-used satellite radio 304 feedthroughs
112 satellite antennas, 306 multimedia receiving systems
114 stars broadcasting conversion equipment, 308 radiating elements
116,302 unipole antennas, 310 ground units
120 automobile-used frequency modulation multimedia devices, 312 first feed-in unit
122 frequency-modulated antennas, 314 second feed-in unit
124 FM receiver, 316 coaxial cables
126 loud speakers, 318 inside conductors
202 coaxial wires, 320 netted conductors
204 anchor clamps, 322 digital satellite broadcasting conversion equipments
30 analog broadcasting Play Systems
Embodiment
Please refer to Fig. 3, Fig. 3 is the schematic diagram that concerns of an analog broadcasting Play System 30 of the embodiment of the invention and a digital satellite broadcasting conversion equipment 322.Analog broadcasting Play System 30 preferably is an automobile-used frequency modulation multimedia system, and it can play the analog broadcast signal of broadcast system, but is not limited thereto.In addition, digital satellite broadcasting conversion equipment 322 can be with the digital satellite broadcasting signal S that receives
SDemodulation converts an analog broadcast signal S to, and is sent to analog broadcasting Play System 30 via a coaxial cable 316.Analog broadcasting Play System 30 includes a unipole antenna 302, a feedthrough 304 and a multimedia playing apparatus 306.Unipole antenna 302 includes a radiating element 308 and a ground unit 310, and its size, profile etc. are corresponding to specific broadcast system, as frequency modulation broadcast system, but not as limit.Feedthrough 304 includes one first feed-in unit 312 and one second feed-in unit 314.The first feed-in unit 312 is coupled to an inside conductor 318 of coaxial cable 316, is used for analog broadcast signal S feed-in radiating element 308.The second feed-in unit 314 is coupled to a netted conductor 320 of coaxial cable 316, is used for connecting ground unit 310.Multimedia playing apparatus 306 is coupled to radiating element 308, is used for demodulation and play analog broadcast signal S.
Therefore, when utilizing analog broadcasting Play System 30 to listen to the digital satellite broadcasting program as if user's desire, the present invention receives digital satellite broadcasting signal S by digital satellite broadcasting conversion equipment 322
SAnd to the analog broadcast signal S of converting, and via coaxial cable 316 and feedthrough 304, analog broadcast signal S is intactly conducted the unipole antenna 302 of feed-in analog broadcasting Play System 30, play analog broadcast signal S to utilize analog broadcasting Play System 30.In this case, because netted conductor 320 is to link to each other with ground unit 310 by feedthrough 304, so the present invention can provide perfect grounding function, makes the effectiveness increase.Simultaneously, the user does not need car shell or the interior dress of dismounting automobile, more needn't consider the specification limits of FCC, can share analog broadcasting Play System 30 and play the digital satellite broadcasting programme content.
Further specify, please refer to Fig. 4 (a) and Fig. 4 (b), Fig. 4 (a) is the schematic diagram of an embodiment of feedthrough 304 among Fig. 3.Fig. 4 (b) is the schematic diagram of the equivalent transmission line of conduction pattern among Fig. 4 (a).In Fig. 4 (a), feedthrough 304 uses metal connected mode FD feed, its by the first feed-in unit 312 with the metal connected mode directly contact radiating element 308 with analog broadcast signal S by inside conductor 318 feed-in radiating elements 308 (as the metal contact SC among Fig. 4 (a)), and the second feed-in unit 314 also is coupled to ground unit 310 (as the metal contact GC among Fig. 4 (a)) in the Metal Contact mode.Preferably, the first feed-in unit 312 and radiating element 308 are metal material, and the second feed-in unit 314 and ground unit 310 also be metal material, come FD feed to reach with the metal connected mode.
On the other hand, if in some cases, for example to be insulator or the paint of car surface with metal partly be completely enclosed within it unipole antenna 302 outer surfaces and can't realize aforesaid metal connected mode the time, then can use the quarter-wave open circuited transmission line to finish the feed-in of signal.Please refer to Fig. 5 (a) and Fig. 5 (b), Fig. 5 (a) is the schematic diagram of another embodiment of feedthrough 304 among Fig. 3.Fig. 5 (b) is the schematic diagram of the equivalent transmission line of conduction pattern among Fig. 5 (a).Shown in Fig. 5 (a), because two quarter-wave open circuited transmission lines through organizing anti-conversion, can produce an equivalent short circuit effect.Therefore, the first feed-in unit 312, radiating element 308, the second feed-in unit 314 and ground unit 310 are a quarter-wave open circuited transmission line.For example, the quarter-wave open circuited transmission line is realized with the metal wire of an insulation in the first feed-in unit 312, the metal of itself is linear to be realized and radiating element 308 just utilizes, be considered as an equivalent short circuit between the two, analog broadcast signal S can be transferred on the unipole antenna 302 from coaxial cable 316.Similarly, the quarter-wave open circuited transmission line is realized with the metal wire of insulation in the second feed-in unit 314, and ground unit 310 utilizes the grounded metal of itself to realize.Please continue with reference to figure 6 (a) and Fig. 6 (b) and Fig. 7 (a) and Fig. 7 (b), Fig. 6 (a) uses as the Metal Contact mode among Fig. 4 (a) at the transmission signal section, and grounded part uses as the equivalence of the quarter-wave open circuited transmission line among Fig. 5 (a) short circuit mode.Fig. 7 (a) uses as the mode among Fig. 5 (a) at the transmission signal section, and grounded part uses the mode described in Fig. 4 (a).
In addition, feedthrough 304 also can utilize the capacity effect of electromagnetic coupled with analog broadcast signal S feed-in unipole antenna 302.Please refer to Fig. 8 (a) and Fig. 8 (b), Fig. 8 (a) is the schematic diagram of the another embodiment of feedthrough 304 among Fig. 3.Fig. 8 (b) is the schematic diagram of the equivalent transmission line of conduction pattern among Fig. 8 (a).According to transmission line theory, the resistance value Z of a transmission line can reduce (Z=1/jwC) with the increase of capacitance C and frequency values w, when bigger or operating frequency is more high when coupling capacitance, makes resistance value Z little during to certain degree, namely can be considered short circuit.Therefore, shown in Fig. 8 (a), the first feed-in unit 312 can the electromagnetic coupled capacitive way with analog broadcast signal S feed-in radiating element 308.Wherein, the first feed-in unit 312 can an insulated metal pipe passes the metal wire of radiating element 308, to produce electromagnetic coupling effect with analog broadcast signal S feed-in radiating element 308.Can an insulator-metal board the recline grounded metal of ground unit 310 of the second feed-in unit 314 is realized.In addition, please continue with reference to figure 9 (a) and Fig. 9 (b) and Figure 10 (a) and Figure 10 (b), in Fig. 9 (a), the transmission signal section uses as the electromagnetic coupled capacitive way FD feed among Fig. 8 (a), and grounded part uses as the Metal Contact mode among Fig. 4 (a).In Figure 10 (a), the transmission signal section uses as the Metal Contact mode FD feed among Fig. 4 (a), and grounded part uses as the electromagnetic coupled capacitive way among Fig. 8 (a).In simple terms, digital satellite broadcasting conversion equipment 322 can be received the analog broadcast signal S of conversion by above-mentioned feedthrough 304 with excellent feed-in characteristic, intactly be transferred to analog broadcasting Play System 30, to play the digital satellite broadcasting programme content.
Be noted that analog broadcasting Play System 30 is embodiments of the invention, those of ordinary skills should do different variations and modification according to this, and are not limited thereto.For instance, in the present embodiment, analog broadcasting Play System 30 is an automobile-used frequency modulation multimedia system, but also can be the multimedia system of other types, preferably, analog broadcasting Play System 30 is the multimedia apparatus for vehicle that former factory is equipped with, but is not limited thereto, also can be the multimedia system of other types, for example the family expenses multimedia system.Analog broadcast signal S preferably can be other any significant signals, analog broadcast signal S can be converted to the signal of handling for analog broadcasting Play System 30 and get final product so long as have corresponding device.Aforesaid available frequency modulation frequency range refers to frequency between between the 88MHz to 108MHz, any idle or present unmanned signal frequency range of using.In addition, in coaxial cable 316, inside conductor 318 is used for transmitting signal usually, and netted conductor 320 is used as the earthy of coaxial cable 316.On the other hand, the quarter-wave open circuited transmission line can be realized by the transmission line of any material or pattern, and described wavelength is relevant with the working frequency range of multimedia system 30.
In addition, please refer to Figure 11, Figure 11 is the measurement result of feed-in characteristic under different frequency of the embodiment of the invention.The feed-in characteristic of using network analyzer to test above-mentioned feedthrough 304, wherein feedthrough 304 places the 1st port, and unipole antenna 302 places the 2nd port, and uses very short cable to come jockey and port, therefore, the loss that can ignore coaxial cable 316.As seen from Figure 11 the reflection parameters of the 1st port (S11 parameter) about-below the 10dB, numerical value is very little, represents that most energy all is transmitted away.And the coupling parameter of the 2nd port (S12 parameter) all-more than the 2dB, coupling energy is very big, means that the energy that is coupled to unipole antenna 302 is very big.In addition, reflected energy is | S11|
2, coupling energy is | S12|
2, under the condition of the conservation of energy, if gross energy is 1, then be radiated in the space energy for (1 one | S11|
2-| S12|
2), therefore, in the greatest irradiation that satisfies under the FCC standard, as long as coupling energy is more big to the energy ratio that is radiated in the space, the expression characteristic electron is more good.In the present embodiment, between 1 to 5dB, have goodish feed-in characteristic approximately.
In sum, known technology uses radiation mode that analog broadcast signal is passed to the analog broadcasting playing device, is subject to environmental limit, and cause transmitting the usefulness instability easily, and if desire to connect again other holding wires, then must dismounting vehicle shell or interior dress, and change original wiring configuration.Under comparing, improve the feedthrough of grounding function by having of the embodiment of the invention, by the signal conduction pattern with analog broadcast signal feed-in analog broadcasting Play System intactly, the user will not need car shell or the interior dress of dismounting automobile, more needn't follow the specification limits of FCC, can share the analog broadcasting Play System and play the digital satellite broadcasting programme content.In this case, except easy-to-use, can increase the energy of feed-in simultaneously, and increase the feed-in energy greatly to being radiated the ratio of dimensional energy, therefore reduce the influence of FCC restriction effectively, and have excellent characteristic electron.
The above only is preferred embodiment of the present invention, and every equivalent variations that claims scope is done according to the present invention and modification all should belong to covering scope of the present invention.
Claims (29)
1. feedthrough that is used for a unipole antenna, wherein said unipole antenna comprises a radiating element and a ground unit, is used for a multi-media signal is sent to a multimedia playing apparatus that is coupled to described radiating element, described feedthrough comprises:
One first feed-in unit is coupled to an inside conductor of a coaxial cable, is used for the described radiating element of described multi-media signal feed-in that will transmit via described coaxial cable; And
One second feed-in unit is coupled to a netted conductor of described coaxial cable, is used for connecting described ground unit;
Wherein, described unipole antenna is a frequency-modulated antenna, and described multimedia playing apparatus is an automobile-used frequency modulation playing device;
Wherein, the analog broadcast signal of the available frequency modulation frequency range that described multi-media signal is changed for a digital satellite broadcasting signal that is received by a digital satellite broadcasting conversion equipment, via described coaxial cable and described feedthrough, by the signal conduction pattern described analog broadcast signal is intactly conducted the described unipole antenna of feed-in.
2. feedthrough as claimed in claim 1, the wherein said first feed-in unit is to be coupled to described radiating element in the Metal Contact mode, with the described radiating element of described multi-media signal feed-in.
3. feedthrough as claimed in claim 2, the wherein said first feed-in unit and described radiating element are a metal material.
4. feedthrough as claimed in claim 1, the wherein said second feed-in unit is to be coupled to described ground unit in the Metal Contact mode.
5. feedthrough as claimed in claim 4, the wherein said second feed-in unit and described ground unit are a metal material.
6. feedthrough as claimed in claim 1, the wherein said first feed-in unit and described radiating element are a quarter-wave open circuited transmission line.
7. feedthrough as claimed in claim 1, the wherein said second feed-in unit and described ground unit are a quarter-wave open circuited transmission line.
8. feedthrough as claimed in claim 1, the wherein said first feed-in unit is with the described radiating element of described multi-media signal feed-in with the electromagnetic coupled capacitive way.
9. feedthrough as claimed in claim 1, the wherein said second feed-in unit is to be coupled to described ground unit with the electromagnetic coupled capacitive way.
10. analog broadcasting Play System comprises:
One unipole antenna comprises a radiating element and a ground unit;
One feedthrough comprises:
One first feed-in unit is coupled to an inside conductor of a coaxial cable, is used for the described radiating element of a multi-media signal feed-in that will transmit via described coaxial cable; And
One second feed-in unit is coupled to a netted conductor of described coaxial cable, is used for connecting described ground unit; And
One multimedia playing apparatus is coupled to described radiating element, is used for demodulation and play described multi-media signal;
Wherein, described unipole antenna is a frequency-modulated antenna, and described multimedia playing apparatus is an automobile-used frequency modulation playing device;
Wherein, the analog broadcast signal of the available frequency modulation frequency range that described multi-media signal is changed for a digital satellite broadcasting signal that receives via a digital satellite broadcasting conversion equipment, via described coaxial cable and described feedthrough, by the signal conduction pattern described analog broadcast signal is intactly conducted the described unipole antenna of feed-in.
11. analog broadcasting Play System as claimed in claim 10, the wherein said first feed-in unit is to be coupled to described radiating element in the Metal Contact mode, with the described radiating element of described multi-media signal feed-in.
12. analog broadcasting Play System as claimed in claim 11, the wherein said first feed-in unit and described radiating element are metal material.
13. analog broadcasting Play System as claimed in claim 10, the wherein said second feed-in unit is to be coupled to described ground unit in the Metal Contact mode.
14. analog broadcasting Play System as claimed in claim 13, the wherein said second feed-in unit and described ground unit are metal material.
15. analog broadcasting Play System as claimed in claim 10, the wherein said first feed-in unit and described radiating element are a quarter-wave open circuited transmission line.
16. analog broadcasting Play System as claimed in claim 10, the wherein said second feed-in unit and described ground unit are a quarter-wave open circuited transmission line.
17. analog broadcasting Play System as claimed in claim 10, the wherein said first feed-in unit are with the described radiating element of described multi-media signal feed-in with the electromagnetic coupled capacitive way.
18. analog broadcasting Play System as claimed in claim 10, the wherein said second feed-in unit is to be coupled to described ground unit with the electromagnetic coupled capacitive way.
19. analog broadcasting Play System as claimed in claim 10, wherein said multimedia playing apparatus are to obtain described multi-media signal by the feed-in of described feedthrough institute from described radiating element.
20. a numeral and analog broadcasting integration system comprise:
One digital broadcasting conversion equipment is used for receiving a digital satellite broadcasting signal, and converts described digital satellite broadcasting signal to an analog broadcast signal, to be sent to an analog broadcasting Play System by a coaxial cable; And
One analog broadcasting Play System comprises:
One unipole antenna comprises a radiating element and a ground unit;
One feedthrough comprises:
One first feed-in unit is coupled to an inside conductor of described coaxial cable, is used for the described radiating element of described analog broadcast signal feed-in; And
One second feed-in unit is coupled to a netted conductor of described coaxial cable, is used for connecting described ground unit; And
One multimedia playing apparatus is coupled to described radiating element, is used for demodulation and play described analog broadcast signal;
Wherein, described unipole antenna is a frequency-modulated antenna, and described multimedia playing apparatus is an automobile-used frequency modulation playing device;
Wherein, the analog broadcast signal of the available frequency modulation frequency range that described multi-media signal is changed for a digital satellite broadcasting signal that receives via a digital satellite broadcasting conversion equipment, via described coaxial cable and described feedthrough, by the signal conduction pattern described analog broadcast signal is intactly conducted the described unipole antenna of feed-in.
21. integration system as claimed in claim 20, the wherein said first feed-in unit is to be coupled to described radiating element in the Metal Contact mode, with the described radiating element of described multi-media signal feed-in.
22. integration system as claimed in claim 21, the wherein said first feed-in unit and described radiating element are metal material.
23. integration system as claimed in claim 20, the wherein said second feed-in unit is to be coupled to described ground unit in the Metal Contact mode.
24. integration system as claimed in claim 23, the wherein said second feed-in unit and described ground unit are metal material.
25. integration system as claimed in claim 20, the wherein said first feed-in unit and described radiating element are a quarter-wave open circuited transmission line.
26. integration system as claimed in claim 20, the wherein said second feed-in unit and described ground unit are a quarter-wave open circuited transmission line.
27. integration system as claimed in claim 20, the wherein said first feed-in unit are with the described radiating element of described multi-media signal feed-in with the electromagnetic coupled capacitive way.
28. integration system as claimed in claim 20, the wherein said second feed-in unit is to be coupled to described ground unit with the electromagnetic coupled capacitive way.
29. integration system as claimed in claim 20, wherein said multimedia playing apparatus are to obtain described analog broadcast signal by the feed-in of described feedthrough institute from described radiating element.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200910008605 CN101800355B (en) | 2009-02-05 | 2009-02-05 | Feed-in device of monopole antenna as well as relevant analog broadcast playing system and integrating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910008605 CN101800355B (en) | 2009-02-05 | 2009-02-05 | Feed-in device of monopole antenna as well as relevant analog broadcast playing system and integrating system |
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| CN101800355B true CN101800355B (en) | 2013-08-07 |
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