CN205123720U - Novel on -vehicle wireless data terminal - Google Patents
Novel on -vehicle wireless data terminal Download PDFInfo
- Publication number
- CN205123720U CN205123720U CN201520932563.4U CN201520932563U CN205123720U CN 205123720 U CN205123720 U CN 205123720U CN 201520932563 U CN201520932563 U CN 201520932563U CN 205123720 U CN205123720 U CN 205123720U
- Authority
- CN
- China
- Prior art keywords
- electric capacity
- inductance
- earth lead
- wireless data
- data terminal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Details Of Aerials (AREA)
Abstract
The utility model relates to a novel on -vehicle wireless data terminal. Its purpose is for the wireless data terminal that provides a simple structure, saves the material, the signal uniformity is good. The utility model discloses a FM chip, power source connector, triode, a plurality of resistance, a plurality of inductance and a plurality of electric capacity. Triode, second resistance, first electric capacity, second inductance and the 3rd resistors amplifier circuit, third electric capacity, fourth electric capacity and the 5th electric capacity form matching circuit, and power source connector and external power source form the FM antenna. The signal output part of FM chip and amplifier circuit's signal input part are connected, and amplifier circuit's signal output part is connected with the ground of power source connector end, and the power input port and the external power source of power source connector are connected. Be provided with matching circuit between amplifier circuit and power core, through making the antenna signal's after amplifier circuit enlargies frequency and FM antenna output's frequency phase -match to different electric capacity adjustment among the matching circuit.
Description
Technical field
The utility model relates to Wireless Data Transmission field, particularly relates to a kind of novel on-vehicle wireless data terminal.
Background technology
Existing onboard wireless data terminal generally all has the dual-use function of power supply and FM receiver, and independent FM receiver antenna all can be set for FM receiver, not only increase Material Cost and assembly cost, and a part of space can be taken, thus increase the volume of onboard wireless data terminal.In addition, FM receiver antenna is all that installation site there will be deviation by manually mounting, thus causes the poor performance opposite sex of FM receiver very large.
Utility model content
The technical problems to be solved in the utility model be to provide a kind of structure simple, save material, novel on-vehicle wireless data terminal that signal conformance is good.
Novel on-vehicle wireless data terminal described in the utility model, wherein, comprise FM chip, power interface connector, triode, second inductance, multiple resistance and multiple electric capacity, the signal output part of FM chip is connected with one end of the second resistance and the base stage of triode respectively, the emitter access zero potential point of triode, the collector electrode of triode is connected with one end of the second inductance by the second wire, the other end of the second resistance is connected with one end of the first electric capacity by the first wire, feeder ear is accessed after the other end of the first electric capacity is connected with the other end of the second inductance, the 3rd resistance is provided with between the tie point and feeder ear of the first electric capacity and the second inductance, privates drawn by the first wire between first electric capacity and the second resistance, the other end of privates is connected with one end of the second wire and privates respectively, the other end of privates is connected with the ground end of power interface connector, the power input port of power interface connector is connected with external power source by the 5th wire.
Novel on-vehicle wireless data terminal described in the utility model, wherein said privates are provided with the 3rd electric capacity, the privates at the 3rd electric capacity two ends are drawn the second earth lead and the 3rd earth lead respectively, the second earth lead and the 3rd earth lead are respectively arranged with the 4th electric capacity and the 5th electric capacity.
Novel on-vehicle wireless data terminal described in the utility model, the 4th earth lead is drawn by the wherein said 3rd privates between earth lead and power interface connector, the 4th earth lead is provided with the 3rd inductance.
Novel on-vehicle wireless data terminal described in the utility model, the 5th wire between wherein said power interface connector and external power source is provided with the 4th inductance, the 4th earth lead drawn by 4th the 5th wire between inductance and external power source, the 4th earth lead is provided with the 6th electric capacity.
Novel on-vehicle wireless data terminal described in the utility model, the tie point of wherein said first electric capacity and the second inductance accesses zero potential point, is provided with the second electric capacity between the tie point of the first electric capacity and the second inductance and zero potential point.
Novel on-vehicle wireless data terminal described in the utility model, the signal output part of wherein said FM chip is also provided with the first resistance, draws the first earth lead between FM chip and the first resistance, the first earth lead is provided with the first inductance.
Novel on-vehicle wireless data terminal difference from prior art described in the utility model is: the utility model using power interface connector and external power source as FM antenna, without the need to mounting extra stand-alone antenna, not only save material, and the installation site of FM antenna there will not be deviation, the consistency of FM antenna output signal improves greatly.Be provided with between amplifying circuit and FM antenna and form match circuit by the 3rd electric capacity, the 4th electric capacity and the 5th electric capacity, ensure that amplifying circuit amplify after the frequency of aerial signal and the frequency that exports of FM antenna match, make FM antenna output signal better effects if.Also be provided with multiple filter elements such as the first inductance, the 3rd inductance, the 4th inductance, the second electric capacity and the 6th electric capacity, further reduce other harmonic waves and clutter to the interference of signal, ensure that the intensity of signal.
Below in conjunction with accompanying drawing, novel on-vehicle wireless data terminal of the present utility model is described further.
Accompanying drawing explanation
Fig. 1 is the circuit structure diagram of the utility model novel on-vehicle wireless data terminal.
Embodiment
As shown in Figure 1, be the circuit structure diagram of the utility model novel on-vehicle wireless data terminal, comprise FM chip (also claiming FM receiver chip) 1, power interface connector 2, triode Q1, multiple resistance, multiple inductance and multiple electric capacity.The signal output part of FM chip 1 is connected with one end of the first resistance R1, the other end of the first resistance R1 is connected with one end of the second resistance R2 and the base stage of triode Q1 respectively, the first earth lead is drawn between FM chip 1 and the first resistance R1, the other end access zero potential point GND of the first earth lead, the first earth lead is provided with the first inductance L 1.The emitter access zero potential point GND of triode Q1, the collector electrode of triode Q1 is connected with one end of the second inductance L 2 by the second wire, the other end of the second resistance R2 is connected with one end of the first electric capacity C1 by the first wire, the other end of the first electric capacity C1 is connected the rear feeder ear and the zero potential point GND that access 5V voltage with the other end of the second inductance L 2, the 3rd resistance R3 is provided with between the tie point and the feeder ear of 5V voltage of the first electric capacity C1 and the second inductance L 2, the second electric capacity C2 is provided with between the tie point and zero potential point GND of the first electric capacity C1 and the second inductance L 2.Privates drawn by the first wire between the first electric capacity C1 and the second resistance R2, the other end of privates is connected with one end of the second wire and privates respectively, the other end of privates is connected with the ground end of power interface connector 2, privates are provided with the 3rd electric capacity C3, the privates at the 3rd electric capacity C3 two ends draw the second earth lead and the 3rd earth lead respectively, the other end of the second earth lead and the 3rd earth lead accesses zero potential point GND respectively, second earth lead and the 3rd earth lead are respectively arranged with the 4th electric capacity C4 and the 5th electric capacity C5.The 4th earth lead drawn by 3rd privates between earth lead and power interface connector, and the other end access zero potential point GND of the 4th earth lead, the 4th earth lead is provided with the 3rd inductance L 3.The power input port of power interface connector 2 is connected with external power source VIN by the 5th wire, 5th wire is provided with the 4th inductance L 4, the 4th earth lead drawn by the 5th wire between the 4th inductance L 4 and external power source VIN, the other end access zero potential point GND of the 4th earth lead, the 4th earth lead is provided with the 6th electric capacity C6.
The FM chip adopted in an execution mode of the present utility model is the QN8007 chip of Quintic brand.
Operation principle of the present utility model is: externally send aerial signal by the signal output part of FM chip 1, triode Q1, the second resistance R2, the first electric capacity C1, the second inductance L 2 and the 3rd resistance R3 form amplifying circuit, amplifying circuit amplifies the aerial signal that FM chip 1 exports, feeder ear provides 5V operating voltage for input in amplifying circuit, ensures that amplifying circuit normally works.3rd electric capacity C3, the 4th electric capacity C4 and the 5th electric capacity C5 form match circuit, and by making the resonance frequency of aerial signal adjusted to the adjustment of different electric capacity, thus the frequency that the frequency of the aerial signal after amplifying circuit amplification and FM antenna are exported matches.Power interface connector 2 and external power source VIN form FM antenna, by power interface connector 2 and external power source VIN reception antenna signal, and are radiate by aerial signal by power line.Wherein the first inductance L 1, the 3rd inductance L 3, the 4th inductance L 4, second electric capacity C2 and the 6th electric capacity C6 play the effect of filtering, reduce other harmonic waves and clutter to the interference of aerial signal.
Novel on-vehicle wireless data terminal described in the utility model, using power interface connector 2 with external power source VIN as FM antenna, without the need to mounting extra stand-alone antenna, not only save material, and the installation site of FM antenna there will not be deviation, the consistency of FM antenna output signal improves greatly.Be provided with between amplifying circuit and FM antenna and form match circuit by the 3rd electric capacity C3, the 4th electric capacity C4 and the 5th electric capacity C5, ensure that amplifying circuit amplify after the frequency of aerial signal and the frequency that exports of FM antenna match, make FM antenna output signal better effects if.Also be provided with multiple filter elements such as the first inductance L 1, the 3rd inductance L 3, the 4th inductance L 4, second electric capacity C2 and the 6th electric capacity C6, further reduce other harmonic waves and clutter to the interference of signal, ensure that the intensity of signal.The utility model structure is simple, saving material, signal conformance are good, compared with prior art has obvious advantage.
Above-described embodiment is only be described preferred implementation of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection range that the utility model claims determine.
Claims (6)
1. a novel on-vehicle wireless data terminal, it is characterized in that: comprise FM chip (1), power interface connector (2), triode (Q1), second inductance (L2), multiple resistance and multiple electric capacity, the signal output part of FM chip (1) is connected with one end of the second resistance (R2) and the base stage of triode (Q1) respectively, emitter access zero potential point (GND) of triode (Q1), the collector electrode of triode (Q1) is connected with one end of the second inductance (L2) by the second wire, the other end of the second resistance (R2) is connected with one end of the first electric capacity (C1) by the first wire, feeder ear is accessed after the other end of the first electric capacity (C1) is connected with the other end of the second inductance (L2), the 3rd resistance (R3) is provided with between the tie point and feeder ear of the first electric capacity (C1) and the second inductance (L2), privates drawn by the first wire between first electric capacity (C1) and the second resistance (R2), the other end of privates is connected with one end of the second wire and privates respectively, the other end of privates is connected with the ground end of power interface connector (2), the power input port of power interface connector (2) is connected with external power source (VIN) by the 5th wire.
2. novel on-vehicle wireless data terminal according to claim 1, it is characterized in that: described privates are provided with the 3rd electric capacity (C3), the privates at the 3rd electric capacity (C3) two ends draw the second earth lead and the 3rd earth lead respectively, the second earth lead and the 3rd earth lead are respectively arranged with the 4th electric capacity (C4) and the 5th electric capacity (C5).
3. novel on-vehicle wireless data terminal according to claim 2, it is characterized in that: the 4th earth lead drawn by the described 3rd privates between earth lead and power interface connector, the 4th earth lead is provided with the 3rd inductance (L3).
4. novel on-vehicle wireless data terminal according to claim 1, it is characterized in that: the 5th wire between described power interface connector (2) and external power source (VIN) is provided with the 4th inductance (L4), the 4th earth lead drawn by the 5th wire between 4th inductance (L4) and external power source (VIN), the 4th earth lead is provided with the 6th electric capacity (C6).
5. novel on-vehicle wireless data terminal according to claim 1, it is characterized in that: described first electric capacity (C1) accesses zero potential point (GND) with the tie point of the second inductance (L2), is provided with the second electric capacity (C2) between the tie point of the first electric capacity (C1) and the second inductance (L2) and zero potential point (GND).
6. novel on-vehicle wireless data terminal according to claim 1, it is characterized in that: the signal output part of described FM chip (1) is also provided with the first resistance (R1), draw the first earth lead between FM chip (1) and the first resistance (R1), the first earth lead is provided with the first inductance (L1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520932563.4U CN205123720U (en) | 2015-11-20 | 2015-11-20 | Novel on -vehicle wireless data terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520932563.4U CN205123720U (en) | 2015-11-20 | 2015-11-20 | Novel on -vehicle wireless data terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205123720U true CN205123720U (en) | 2016-03-30 |
Family
ID=55579289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520932563.4U Expired - Fee Related CN205123720U (en) | 2015-11-20 | 2015-11-20 | Novel on -vehicle wireless data terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205123720U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110544855A (en) * | 2018-05-29 | 2019-12-06 | 鸿富锦精密工业(武汉)有限公司 | power adapter and electronic device including the same |
| CN110875750A (en) * | 2018-08-31 | 2020-03-10 | 华为技术有限公司 | FM antenna circuit and terminal equipment |
-
2015
- 2015-11-20 CN CN201520932563.4U patent/CN205123720U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110544855A (en) * | 2018-05-29 | 2019-12-06 | 鸿富锦精密工业(武汉)有限公司 | power adapter and electronic device including the same |
| CN110875750A (en) * | 2018-08-31 | 2020-03-10 | 华为技术有限公司 | FM antenna circuit and terminal equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20130287221A1 (en) | Earphone jack circuit and portable electronic device using the same | |
| CN203734624U (en) | High-performance microstrip multistage low-noise amplifier | |
| CN205123720U (en) | Novel on -vehicle wireless data terminal | |
| CN204697010U (en) | Wideband low noise amplifier | |
| CN103139673A (en) | Bluetooth small loudspeaker box | |
| CN201774652U (en) | Microphone of mobile terminal, mobile terminal employing same | |
| CN207339798U (en) | The low-noise amplifier of C-band | |
| CN203968069U (en) | The VHF frequency band signals amplifying circuit of a kind of pair of filtering | |
| CN204206115U (en) | A kind of amplifying circuit for wireless short wave transmitting antenna | |
| CN107786177A (en) | A kind of low-noise amplifier of C-band | |
| CN204068974U (en) | A kind of electronic communication equipment | |
| CN204633720U (en) | A kind of signal for bus location amplifies biasing circuit | |
| CN105765863B (en) | A kind of power amplifier stabilizing circuit and transmitter | |
| CN204408615U (en) | Cable television system stereophonic signal emitter | |
| CN207819862U (en) | A kind of broad band amplifier of the adjustable gain of single supply power supply | |
| CN201674486U (en) | Circuit structure for portable radios | |
| CN205961100U (en) | WIFI equipment and radio frequency information receiving circuit thereof | |
| CN205195660U (en) | Broadband amplification device | |
| CN201378632Y (en) | Dual-band receiving and noise-damping device | |
| CN207926532U (en) | A kind of ultra-low noise amplifier | |
| CN203788272U (en) | RM100 receiver front-end assembly module | |
| CN201328122Y (en) | FM radio receiving circuit for portable product | |
| CN201336356Y (en) | Radio external antenna with magnifier | |
| CN207490874U (en) | A kind of low-frequency power amplifier | |
| CN203180854U (en) | High-fidelity power amplifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Novel on -vehicle wireless data terminal Effective date of registration: 20170307 Granted publication date: 20160330 Pledgee: Huaxia Bank Limited by Share Ltd Zhongguancun Beijing branch Pledgor: BEIJING HI-TECH ZHONGTIAN TECHNOLOGY CO., LTD. Registration number: 2017990000159 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20180702 Granted publication date: 20160330 Pledgee: Huaxia Bank Limited by Share Ltd Zhongguancun Beijing branch Pledgor: BEIJING HI-TECH ZHONGTIAN TECHNOLOGY CO., LTD. Registration number: 2017990000159 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Novel on -vehicle wireless data terminal Effective date of registration: 20180704 Granted publication date: 20160330 Pledgee: Beijing Intellectual Property Management Co., Ltd. Pledgor: BEIJING HI-TECH ZHONGTIAN TECHNOLOGY CO., LTD. Registration number: 2018990000532 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160330 Termination date: 20191120 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |