CN2506025Y - Infinite transmitting circuit with adjustable and variable radio frequency amplifying power - Google Patents
Infinite transmitting circuit with adjustable and variable radio frequency amplifying power Download PDFInfo
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- CN2506025Y CN2506025Y CN 01266143 CN01266143U CN2506025Y CN 2506025 Y CN2506025 Y CN 2506025Y CN 01266143 CN01266143 CN 01266143 CN 01266143 U CN01266143 U CN 01266143U CN 2506025 Y CN2506025 Y CN 2506025Y
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Abstract
The utility model relates to a radio transmitting circuit with adjustable and variable radio-frequency amplifying power, which comprises a signal processing circuit of which the output signal is oscillated and is amplified and processed by a plurality of power level circuits, and the amplified signal can be transmitted by using a radio mode and can be received by a computer system, wherein at least a power given unit is arranged among the power level circuits to control and process the amount of the power level circuits of the output signal. When the utility model is used in a radio input device and is used in a short range, the low transmitting power can be selected to use. When the utility model is used in a long range, the large transmitting power can be adjusted to use. Thus, the serving life of a battery in the radio input device can be effectively prolonged, the transmitting power can be enlarged when the transmission with long distance is needed, and the purpose of transmitting with long distance is achieved.
Description
Technical field
The utility model is the design about a kind of radio transmitter, particularly about a kind of radio transmitter of adjustable varying firing rate amplifying power.
Background technology
Because the function of computer is become stronger day by day, the hierarchy of skill of computer peripheral equipment is also become stronger day by day.In the various computer input units in early days, for example computer mouse, keyboard, rocking bar, trace ball etc., all be by data transmission interface (for example serial, arranged side by side, USB ... Deng), be sent in the computer installation with input data these input units, computer installation can carry out corresponding action after the data that receive these input unit inputs.
Computer input units such as keyboard in the market, mouse, rocking bar under the continuous research and development of Radio Transmission Technology, are day by day popularized.But, when using the input unit of these wireless types, can't obtain working power from computer via cable, thus must be in this wireless type input unit equipped with battery, for should the required working power of wireless type input unit.
In order to guarantee the normal use of this wireless type input unit, promptly become one of emphasis of wireless product design the useful life of this battery.The size of the useful life of battery and product consumed power has very big relation.When using wireless product, can (such as the transmission end be to the distance of receiving terminal, the material of peripheral environment because of the difference of at that time environment for use ... etc. factor), the radio frequency transmission power of its transmission end has different demands.Moreover because wireless product is day by day popularized, the problem of interference is on the rise, if when deisgn product, considers above-mentioned problem, can reduce the use amount of battery, and avoid the problem of radiofrequency signal phase mutual interference.
Summary of the invention
Therefore, the utility model is designed a kind of adjustable radio-frequency transmissions control circuit at the problems referred to above and demand.When this wireless type product when short distance is used, can use lower transmission (emission) power, when long distance is used, then can adopt bigger transmission (emission) power.So get final product extending battery life in the longer Distance Transmission of need, also can strengthen radio frequency transmission power and reach remote transmission.Another purpose of the present utility model provides a kind of radio transmitter of adjustable varying firing rate amplifying power, and its technology by adjustable radio-frequency emission power reaches purpose of power saving, prolongs the useful life of battery.
For achieving the above object, in the radio transmitter of adjustable varying firing rate amplifying power of the present utility model, in its power stage, adopt the circuit structure of tandem power amplification circuit, can be under the setting of a power setting unit, signal gives power amplification after the modulation of this signal modulating oscillation level being sent by one of them power stage or several power stages.Whether each power stage that set in this tandem power amplification circuit adds the work that signal amplifies so the user can be by the set-up function of power setting unit, and transmitting power size that the actual use occasion of foundation is required and transmission range are far and near.
The structural design of other purpose of the present utility model and circuit thereof will be further described by following embodiment and accompanying drawing.
Description of drawings
Fig. 1 is a circuit function block diagram of the present utility model.
Fig. 2 is applied in transmission of wireless signals between wireless mouse and computer installation for the utility model, and the enforcement illustration of service range between the two when nearer.
Fig. 3 is applied in transmission of wireless signals between wireless mouse and computer installation for the utility model, and the enforcement illustration of service range between the two when far away.
Fig. 4 is the detailed control circuit of the utility model embodiment.
Description of reference numerals:
100: radio transmitter 1: signal modulating oscillation level
2: tandem power amplification circuit 21: first order power stage
22: second level power stage 2n: n level power stage
3: filter circuit 4: antenna
5: power setting unit 51: power change-over switch
52: by-pass switch 6: signal processing circuit
7: wireless mouse 8: computer installation
81: radio frequency signal receiver
Embodiment
As shown in Figure 1, it is the circuit function block diagram of the radio transmitter 100 of the adjustable varying firing rate amplifying power of the utility model.Wireless transmission control circuit of the present utility model mainly includes a signal modulating oscillation level 1, a tandem power amplification circuit 2, a filter circuit 3, an antenna 4, a power setting unit 5.Wherein the input of this signal modulating oscillation level 1 is to be connected to a signal processing circuit 6, to receive the input signal Sl of these signal processing circuit 6 outputs.
This signal processing circuit 6 can be for example computer mouse (mouse), keyboard (keyboard), rocking bar (joystick), trace ball (track ball), game console (game controller), Digital camera (digital signal camera/PC camera), digital camera (digital signal videocamera/PC video camera), or the signal processing circuit of other input unit (input device) or indicator device (pointing device) etc., to produce this input signal S1.This input signal S1 at first is sent to the signal modulating oscillation level 1 of transmitting set and carries out the modulation of signal.Signal data after ovennodulation is sent to the amplification of carrying out radio-frequency power in the tandem power amplification circuit 2 again.
Include the power stage 21,22 of a plurality of cascade arrangements in this tandem power amplification circuit 2 ... 2n.For example, can include the power stage 21,22 of secondary in this tandem power amplification circuit 2.When the application of reality, when doing more multistage cascade arrangement, to reach more multistage power amplification according to this embodiment.
Power stage with secondary is an example, the input of this first order power stage 21 is connected to the output of signal modulating oscillation level 1, and its output is connected to the input of second level power stage 22, and the output of second level power stage 22 then is connected in the input of filter circuit 3 again.
The watt level of this tandem power amplification circuit 2 is selected and can be controlled by power setting unit 5.Promptly, manual switchover or automatic switchover via this power setting unit 5, can select in the tandem power amplification circuit 2 is the work of being carried out power amplifications by first order power stage 21, or both carry out the work of power amplification jointly by first order power stage 21 and second level power stage 22.
This filter circuit 3 is brought by this second level power stage 22 through behind the amplifying signal receiving, and promptly carries out the function of signal filtering, to produce a filtered radiofrequency signal at its output.
For example be applied in the computer installation at the utility model, application examples as shown in Figure 2, the RF signal S 2 of being launched by wireless mouse 7 can be connected by computer installation 8 or built-in radio frequency signal receiver 81 receptions.At this moment, if when the distance of 81 of this wireless mouse 7 and radio frequency signal receiver is closer distance d1, the power setting unit 5 that then is configured in this wireless mouse 7 can manual mode switch to first section (promptly having less transmitting power).And when the distance of 81 of this wireless mouse 7 and radio frequency signal receiver when being remote d2 (as shown in Figure 3), the power setting unit 5 that then is configured in this wireless mouse 7 can manual mode switch to second section (promptly having bigger transmitting power).Certainly the handover operation of this power setting unit 5 also can adopt the mode of Auto-Sensing, automatic switchover to be achieved.Because the mode of this Auto-Sensing or automatic switchover is a known electronic detection structure, does not then do further discussion in this specification.
In addition, when the user operates all kinds of input unit under different environment, when for example the plane of operation is different material (for example when wooden desktop or irony desktop), or when each other interference (interference) between many wireless devices is big, also can select suitable transmitted power to operate, the mutual interference problem that so can reach power saving and avoid strong transmission signal to be produced by the utility model.
Fig. 4 is the detailed control circuit of the utility model embodiment, mainly includes the signal modulation and the two big functions of vibrating in the signal modulating oscillation level 1.Modulation circuit wherein is made up of capacitor C 1, C2, resistance R 1, R2, inductance L 1, diode D1, and this oscillating circuit then is made of oscillator X, resistance R 3, R4, R5, capacitor C 3, C4, C5, inductance L 2, transistor Q1.
Tandem power amplification circuit 2 in the drawings is that power stage 21,22 with two cascade arrangements is as the embodiment explanation.Wherein include a capacitor C 6, C7, resistance R 6, inductance L 3, transistor Q2 formation in the first order power stage 21.The collector terminal of above-mentioned this transistor Q1 is as the output of this signal modulating oscillation level 1, and it is connected to the base terminal of the transistor Q2 of the first order power amplifier 21 in the tandem power amplification circuit 2.
Include a capacitor C 8, C9, C10, resistance R 7, inductance L 4, transistor Q3 formation in this second level power stage 22.The collector terminal of this transistor Q3 is as the output of this second level power stage 22, and it is connected to filter circuit 3.Include capacitor C 11, C12, inductance L 5 in this filter circuit 3, it is connected to antenna 4.
A power change-over switch 51 and a by-pass switch 52 have been comprised in this power setting unit 5.In more multistage power stage circuit, the quantity of this power change-over switch 51 and by-pass switch 52 promptly increases because of need.This power change-over switch 51 is serially connected in the power end of power stage, in order to determine whether power supply VCC is to this power stage.And this by-pass switch 52 is connected in parallel between the input and output of this power stage, signal bypass path.The change action of this power change-over switch 51 and by-pass switch 52 just is complementary, and promptly when these power change-over switch 51 closures, this by-pass switch 52 is promptly opened a way, and when power change-over switch 51 open circuits, this by-pass switch 52 is promptly closed.
Therefore, be that each power stage in a plurality of power stages of may command wants to add power amplification work by the power setting unit.When wireless transmission distance is far away, then can be set at the power stage adding work of many groups, and when short transmission range, then can reduces working group's number of power stage.That is,, then can use each power stage simultaneously,, then can first order power stage or second level power stage not powered, and signal is arrived filter circuit via bypass path bypass (bypass) if do not need stronger transmitting power if need stronger transmitting power.
By the foregoing description explanation of the present utility model as can be known, the utility model really can provide the radio transmitter of an adjustable varying firing rate amplifying power, so that the user is when using radio input device, if when short distance is used, only need adopt lower transmitting power, when long distance is used, then can select to use bigger transmitting power, so can prolong the battery life in this wireless device.
Above embodiment explanation only be embodiment explanation of the present utility model, allly is familiar with this operator and can illustrates and do other all improvement and variation according to the foregoing description of the present utility model.Yet all improvement and variation that these are done according to the utility model embodiment, still belong to spirit of the present utility model and the Patent right requirement scope that defined in.
Claims (6)
1. the radio transmitter of an adjustable varying firing rate amplifying power is characterized by: include:
One signal modulating oscillation level in order to receiving a signal data of a signal processing circuit, and is carried out signal modulation process;
One tandem power amplification circuit includes several grades power stage, in order to receiving signal data after the modulation that this signal modulating oscillation level sent, and by one of them power stage or several power stages this signal data rate of doing work is amplified;
One power setting unit, far and near and whether add the work that signal amplifies according to required transmitting power size and transmission range for each power stage of setting in this tandem power amplification circuit;
Wherein, this can and go out via antenna emission through the signal data of power amplification after treatment, receives for the receiving system in a distant place.
2. radio transmitter as claimed in claim 1 is characterized by: this is after the signal data of power amplification can the processing via a filter circuit, again by this antenna emission and go out.
3. radio transmitter as claimed in claim 1, it is characterized by: this signal processing circuit can be the signal processing circuit of computer mouse, keyboard, rocking bar, trace ball, game console, digital camera (digital signal camera/PC camera), digital video camera (digital signal videocamera/PC video camera) etc., to produce this signal data.
4. radio transmitter as claimed in claim 1, it is characterized by: the by-pass switch that comprises at least one power change-over switch and corresponding number in this power setting unit, this power change-over switch is serially connected in the power end of power stage, in order to determine whether power supply is to this power stage, and this by-pass switch is connected in parallel between the input and output of this power stage, signal bypass path, the change action of this power change-over switch and by-pass switch just are complementary.
5. radio transmitter as claimed in claim 4 is characterized by: the power change-over switch in this power setting unit and the change action of by-pass switch are manual operation.
6. radio transmitter as claimed in claim 4 is characterized by: the power change-over switch in this power setting unit and the change action of by-pass switch are for automaticallying switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01266143 CN2506025Y (en) | 2001-11-02 | 2001-11-02 | Infinite transmitting circuit with adjustable and variable radio frequency amplifying power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01266143 CN2506025Y (en) | 2001-11-02 | 2001-11-02 | Infinite transmitting circuit with adjustable and variable radio frequency amplifying power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2506025Y true CN2506025Y (en) | 2002-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01266143 Expired - Fee Related CN2506025Y (en) | 2001-11-02 | 2001-11-02 | Infinite transmitting circuit with adjustable and variable radio frequency amplifying power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2506025Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101075882B (en) * | 2006-05-15 | 2010-04-21 | 杭州华三通信技术有限公司 | Ethernet transceiver and method for realizing signal long-distance transmission |
| CN106682554A (en) * | 2016-11-29 | 2017-05-17 | 大唐微电子技术有限公司 | Non-contact IC card reader and implementation method thereof |
-
2001
- 2001-11-02 CN CN 01266143 patent/CN2506025Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101075882B (en) * | 2006-05-15 | 2010-04-21 | 杭州华三通信技术有限公司 | Ethernet transceiver and method for realizing signal long-distance transmission |
| CN106682554A (en) * | 2016-11-29 | 2017-05-17 | 大唐微电子技术有限公司 | Non-contact IC card reader and implementation method thereof |
| CN106682554B (en) * | 2016-11-29 | 2019-08-16 | 大唐微电子技术有限公司 | A kind of Contactless IC Card Reader and its implementation |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |