CN103812579A - Receiving signal strength indicator circuit having low voltage and wide detection energy range - Google Patents
Receiving signal strength indicator circuit having low voltage and wide detection energy range Download PDFInfo
- Publication number
- CN103812579A CN103812579A CN201210444001.6A CN201210444001A CN103812579A CN 103812579 A CN103812579 A CN 103812579A CN 201210444001 A CN201210444001 A CN 201210444001A CN 103812579 A CN103812579 A CN 103812579A
- Authority
- CN
- China
- Prior art keywords
- output
- signal strength
- rssi
- voltage
- rectifiers
- 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.)
- Pending
Links
Images
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
The invention discloses a receiving signal strength indicator (RSSI) circuit having a low voltage and a wide detection energy range. The RSSI circuit comprises a plurality of amplifiers in series connection, a plurality of rectifiers, and a selector. Input terminals of the plurality of rectifiers are respectively connected to output terminals of the plurality of amplifiers in sequence; and the selector is connected to each output terminal of the plurality of rectifiers, so that one from multiple outputs of the plurality of rectifiers is selected. According to the invention, the selector is used for selecting out output from a plurality of outputs of the plurality of rectifiers; and because a whole voltage range can be used at each stage, the provided RSSI circuit enables a wide energy range to be detected by the same voltage.
Description
Technical field
The present invention relates to a kind of received signal strength indicator device (received si gnal strength indicator, RSSI) circuit, especially a kind of have low-voltage and a wide received signal strength indicator device circuit that can detected energy scope.
Background technology
Received signal strength indicator device is a kind of for measuring the existing energy of received RF signal, for example, and the measurement technology of signal strength signal intensity.Common design is acquisition radio frequency or intermediate-freuqncy signal, and produces the voltage or the electric current output that are equal to signal strength signal intensity.The ability that receiver captures weak signal is called as receiver sensitivity, and the ability that the higher receiver of receiver sensitivity captures weak signal is better.Signal strength signal intensity can measure based on output voltage.In telecommunications is propagated, consider design difficulty or ease, RSSI after amplifying, carries out in intermediate frequency (intermediate frequency, the IF) stage conventionally.The output of RSSI normally one can pass through the DC simulation level that internal simulation-digital quantizer (analog-digital converter, ADC) samples.For the device of radio frequency receiver that disposes RSSI, such as mobile phone, Wi-Fi adapter, remote controller etc., the user of device normally cannot see RSSI's.
In general, RSSI circuit is to realize with multistage (multi-stage) amplifier and rectifier.Fig. 1 has shown a kind of schematic diagram of existing RSSI circuit.RSSI circuit is five amplifiers with Pyatyi structural arrangement, and etc. the rectifier of quantity carry out.As shown in Figure 1, amplifier 101 is to arrange with the form of tandem, and the output of amplifier 101 is connected to the input of each other rectifier 102.And the output of rectifier 102 is obtained the final output of RSSI circuit by summation.
Fig. 2 shows that a chart presents the final output of RSSI circuit in Fig. 1.This chart is presented on tested measuring point, the relation of RSSI output voltage and energy intensity.Be the scope that RSSI output voltage can be grown up therein along the represented headroom of output voltage axle.As shown in Figure 2, because be finally output as the summation of outputs at different levels, in Fig. 1, the result of the Pyatyi practising way of RSSI is that each section represents the output of each grade corresponding to the lines of five series connection sections.In Fig. 2, the slope of lines can be interpreted as the sensitivity of RSSI, or the ability of difference input signal energy intensity.In other words the interval mapping that, represents energy range is in voltage spaces.Because the scope of whole input voltage by mapping in whole admissible voltage range, for example, headroom shown in Fig. 2, thus a fixing input voltage interval only can mapping in a relatively little voltage spaces, and may cause because of the interference of noise erroneous judgement.In other words, common detectable energy range is limited.In order to increase detectable energy range, voltage that must be high to be so that sufficient voltage top scope to be provided for the operation of RSSI, and operation under low suppling voltage can be restricted.
Summary of the invention
The object of the invention is to make the shortcoming that overcomes above-mentioned prior art RSSI circuit.Main purpose of the present invention is to provide a kind of RSSI circuit, and what this RSSI circuit had an extension can detected energy scope, and does not need voltage to promote.
Another object of the present invention is to provide a kind of higher sensitivity that has, and the RSSI circuit of the output voltage that can amplify take difference as little detected energy interval.
In order to reach above-mentioned object, the invention provides a kind of have low-voltage and wide received signal strength indicator device circuit that can detected energy scope, comprise: multiple amplifiers, connect in serial connection mode; Multiple rectifiers, the input of each of the plurality of rectifier is sequentially connected to respectively in the plurality of amplifier the output of one of them; And a selector, be connected in the plurality of rectifier each output, in order to select an output from multiple outputs of the plurality of rectifier.
Narration more than the present invention and other object, feature, outward appearance and advantage, can be by reading carefully in following provided specific descriptions, and suitably with reference to graphic explanation, and can more clearly understand.
Accompanying drawing explanation
Appended graphic further understanding and the combination and the some that forms this specification wherein providing about the embodiment of the present invention, illustrates embodiments of the invention and the explanation together providing for the principle of the embodiment of the present invention is provided.
In graphic:
Fig. 1 has shown a kind of schematic diagram of existing RSSI circuit;
Fig. 2 shows that a chart presents the final output of RSSI circuit in Fig. 1;
Fig. 3 shows the schematic diagram of the RSSI circuit of the embodiment of the present invention; And
Fig. 4 shows that a chart presents the output of RSSI circuit in Fig. 3.
Wherein, description of reference numerals is as follows:
101 amplifiers
102 rectifiers
301 amplifiers
302 rectifiers
303 selectors
Embodiment
Fig. 3 shows the schematic diagram of the RSSI circuit of the embodiment of the present invention.As shown in Figure 3, RSSI circuit of the present invention comprises multiple amplifiers that connect in serial connection mode 301, multiple rectifier 302, and a selector 303.In the plurality of rectifier 302, the input of each is sequentially connected to respectively in the plurality of amplifier 301 output of one of them, and this selector 303 is connected in the plurality of rectifier 302 output of each, to select an output from multiple outputs of the plurality of rectifier 302.In this embodiment, five amplifiers 301 and five rectifiers 302 have been comprised to implement the RSSI circuit of Pyatyi.And also can use different number of stages.
Fig. 4 shows that a chart presents the output of RSSI circuit in Fig. 3.For example, because selector 303, in order to select an output from all output of the plurality of rectifier 302,, in the present embodiment, is selected from five outputs; Input energy range is shown as five parallel sections with respect to the map of output voltage range, and each reflection section is corresponding to one-level, for example output of a rectifier 302.
Compare with respect to the map of output voltage range with the input energy range shown in Fig. 2, in Fig. 4 a fixing input voltage interval by mapping in larger voltage spaces.In other words, RSSI circuit of the present invention provides higher discrimination for a fixing energy bite, and compared with traditional RSSI circuit of Fig. 1, whole RSSI circuit can detect wider input energy range.
It should be noted that the present invention also allows selectable mapping section.Each energy bite can be considered as by critical value on one and operation window that once critical value limits.Can select a suitable mapping section for the target input energy in this operation window.As indicated in Fig. 4, for a target critical value T, selector can be set and select mapping section 2 with to the relation that mirrors input energy and output voltage.
As described above is only in order to explain the preferred embodiment of this creation; not attempt tool this creation is done to any pro forma restriction; there is work under identical creation spirit about any modification or the change of this creation, all must be included in the category of this creation intention protection therefore all.
Claims (2)
1. there is low-voltage and a wide received signal strength indicator device circuit that can detected energy scope, comprise:
Multiple amplifiers, connect in serial connection mode;
Multiple rectifiers, the input of each in the plurality of rectifier is sequentially connected to respectively in the plurality of amplifier the output of one of them; And
One selector, is connected in the plurality of rectifier each output, in order to select an output from multiple outputs of the plurality of rectifier.
2. as claimed in claim 1 have low-voltage and a wide received signal strength indicator device circuit that can detected energy scope, and wherein this selector can detect input energy according to a target and select this output.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210444001.6A CN103812579A (en) | 2012-11-08 | 2012-11-08 | Receiving signal strength indicator circuit having low voltage and wide detection energy range |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210444001.6A CN103812579A (en) | 2012-11-08 | 2012-11-08 | Receiving signal strength indicator circuit having low voltage and wide detection energy range |
Publications (1)
Publication Number | Publication Date |
---|---|
CN103812579A true CN103812579A (en) | 2014-05-21 |
Family
ID=50708840
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201210444001.6A Pending CN103812579A (en) | 2012-11-08 | 2012-11-08 | Receiving signal strength indicator circuit having low voltage and wide detection energy range |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN103812579A (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003163556A (en) * | 2001-11-29 | 2003-06-06 | Nec Corp | Signal intensity detection circuit |
US20030184277A1 (en) * | 2002-03-26 | 2003-10-02 | Shahla Khorram | Variable gain received signal strength indicator |
CN2622932Y (en) * | 2003-06-11 | 2004-06-30 | 深圳源核微电子技术有限公司 | Integrated clipping amplifier |
CN101621810A (en) * | 2008-07-04 | 2010-01-06 | 博通集成电路(上海)有限公司 | Received signal strength indication detector and method for calibrating received signal strength indication |
CN101688889A (en) * | 2007-05-14 | 2010-03-31 | 希泰特微波公司 | RF detector with crest factor measurement |
WO2011161858A1 (en) * | 2010-06-22 | 2011-12-29 | 日本電気株式会社 | Power detection circuit |
-
2012
- 2012-11-08 CN CN201210444001.6A patent/CN103812579A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003163556A (en) * | 2001-11-29 | 2003-06-06 | Nec Corp | Signal intensity detection circuit |
US20030184277A1 (en) * | 2002-03-26 | 2003-10-02 | Shahla Khorram | Variable gain received signal strength indicator |
CN2622932Y (en) * | 2003-06-11 | 2004-06-30 | 深圳源核微电子技术有限公司 | Integrated clipping amplifier |
CN101688889A (en) * | 2007-05-14 | 2010-03-31 | 希泰特微波公司 | RF detector with crest factor measurement |
CN101621810A (en) * | 2008-07-04 | 2010-01-06 | 博通集成电路(上海)有限公司 | Received signal strength indication detector and method for calibrating received signal strength indication |
WO2011161858A1 (en) * | 2010-06-22 | 2011-12-29 | 日本電気株式会社 | Power detection circuit |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9086436B2 (en) | Method of high voltage detection and accurate phase angle measurement in cordless phasing meters | |
JP2017111136A (en) | Current sensing circuit | |
CN107037303B (en) | For being tested the detection device and method of CT secondary side circuit state outside ammeter | |
CN111880052A (en) | Hand-held type partial discharge detection device based on bluetooth interconnection terminal cluster | |
CN104965158A (en) | Improved ultrahigh-frequency partial discharge capacity detection acquiring device and method | |
CN106950407A (en) | A kind of three-phase isolation detection circuit | |
CN102200550B (en) | Delay orthogonal digital intermediate-frequency phase discrimination method for detecting phase difference accurately | |
CN204244188U (en) | Signal based on lock-in amplifier amplifies and testing circuit | |
AU2014204547B2 (en) | Identifying defective electrical cables | |
WO2013067137A4 (en) | Scalable successive-approximation-register analog-to-digital converters | |
CN103812579A (en) | Receiving signal strength indicator circuit having low voltage and wide detection energy range | |
US8599029B2 (en) | Electrical circuit identification means | |
CN114200287B (en) | Pulse waveform processing circuit of dTof chip | |
CN216927045U (en) | Detection circuit and polarity discrimination device | |
CN217213004U (en) | Cable discharge detection equipment | |
CN208432659U (en) | High precision low frequency Frequency tester | |
CN113791277A (en) | Insulation resistance detection device and forklift | |
CN206181379U (en) | Power amplifier AP testing arrangement and system | |
CN111999567A (en) | Radiation emission RE test equipment and test method | |
CN111751611A (en) | Weak current measuring system | |
US20150349833A1 (en) | Impedance measurement system and mobile communication device comprising an impedance measurement system | |
US20140117974A1 (en) | Rssi circuit with low voltage and wide detectable power range | |
CN217278623U (en) | Line load network detection and fault positioning device | |
US20150349982A1 (en) | Phase detector | |
CN106712861A (en) | Standing wave detection circuit |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140521 |