CN202837465U - Circuit for detecting output port connection state of power amplification module - Google Patents

Circuit for detecting output port connection state of power amplification module Download PDF

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Publication number
CN202837465U
CN202837465U CN 201220541725 CN201220541725U CN202837465U CN 202837465 U CN202837465 U CN 202837465U CN 201220541725 CN201220541725 CN 201220541725 CN 201220541725 U CN201220541725 U CN 201220541725U CN 202837465 U CN202837465 U CN 202837465U
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China
Prior art keywords
resistance
detection module
connects
output terminal
electric capacity
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Expired - Lifetime
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CN 201220541725
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Chinese (zh)
Inventor
薛红喜
熊保胜
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KUNSHAN MEIBO COMMUNICATION TECHNOLOGY Co Ltd
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KUNSHAN MEIBO COMMUNICATION TECHNOLOGY Co Ltd
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Priority to CN 201220541725 priority Critical patent/CN202837465U/en
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Abstract

A circuit for detecting the output port connection state of a power amplification module is characterized by mainly comprising a power detecting module, a port connection state detecting module and a signal processing module, an output port of the power amplification module is connected with an input end of the power detecting module, a first output end of the power detecting module is connected with an input end of the port connection state detecting module, a second output end of the power detecting module is connected with a first output end of the signal processing module, and an output end of the port connection state detecting module is connected with a second output end of the signal processing module. By the aid of the structure, compared with the prior art, the circuit has the practical advantages of high practicality, long service life and low cost.

Description

A kind of circuit for detection of power amplification module output terminal port communicating condition
Technical field
The utility model relates to a kind of testing circuit, is specifically related to a kind of circuit for detection of power amplification module output terminal port communicating condition.
Background technology
The power amplification module is as the prominent unit of wireless telecommunication system, its rated power that uses power discharging device is usually more than 80 percent, so whether the connection of its output port is normally most important to stability and the security of the device work of power amplifier.At present, the detection mode to power amplification module output terminal port communicating condition commonly used has:
One, by detecting the echo power of power amplifier module output port, judge whether its output port connects normally, this scheme is extracted the power amplification module in the backward power of output port and is converted to corresponding low-frequency voltage by the radio-frequency power switching device, but owing to accurately extracting qualitative coupling mechanism or the circulator that backward power needs high directivity, therefore price comparison is expensive, and occur when unusual when output port, can damage the power amplifier module because can not in time react;
Two, by detecting the standing-wave ratio (SWR) of power amplifier module output port connection device, judge whether its output port connects normally, this scheme is extracted respectively the power amplification module in forward and the backward power of output port and is converted to corresponding low-frequency voltage by the radio-frequency power switching device, but this scheme is similar with scheme one, the qualitative coupling mechanism or the circulator that also need high directivity, therefore also there is expensive problem, in addition because the accuracy that standing-wave ratio (SWR) detects is not good, therefore need a large amount of initial calibrations and software false alarm prevention to process, comparatively inconvenience;
Three, detect the resistance sizes of power amplifier module output port connection device by circulator, judge whether its output port connects normally, this scheme can only detect the resistance of connection device and can not determine impedance magnitude and be connected quality, and the expensive circulator of needs, and the equipment that ought connect makes the too much output power of power amplifier module cause the power amplifier module lost of life even damage because connecting unreliable meeting.
In sum, whether normal presence variety of issue to detect the duty of power amplifier module output port by above scheme.Therefore, how to solve many deficiencies that above-mentioned prior art exists, just become the problem that the utility model will be studied.
Summary of the invention
The purpose of this utility model is to provide a kind of circuit for detection of power amplification module output terminal port communicating condition.
For achieving the above object, the technical solution adopted in the utility model is: a kind of circuit for detection of power amplification module output terminal port communicating condition mainly is comprised of power detection module, port connection status detection module and signal processing module; The output port of described power amplification module connects the input end of power detection module, the input end of one first output terminal connectivity port connection status detection module of this power detection module, one second output terminal of power detection module then connects one first output terminal of described signal processing module; The output terminal of described port connection status detection module connects one second output terminal of described signal processing module.
Related content in the technique scheme is explained as follows:
1. in the such scheme, described power detection module comprises coupling mechanism, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, detector diode, the first electric capacity and operational amplifier; Described coupling mechanism has input end, isolation end, coupled end and straight-through end, and the input end of described coupling mechanism is the input end of described power detection module, and the straight-through end of described coupling mechanism is the first output terminal of described power detection module; Described operational amplifier has in-phase input end, inverting input, voltage input end, earth terminal and output terminal, and the output terminal of described operational amplifier is the second output terminal of described power detection module; One end of described the first resistance is connected with the isolation end of coupling mechanism, other end ground connection; The coupled end of the anodic bonding coupling mechanism of described detector diode, its negative electrode connects the first end of the first electric capacity, the second end ground connection of this first electric capacity; The first end of described the second resistance connects the first end of the first electric capacity, and the second end of the second resistance connects the in-phase input end of described operational amplifier; The in-phase input end of the first end concatenation operation amplifier of described the 3rd resistance, the second end ground connection; The inverting input of the first end concatenation operation amplifier of described the 4th resistance, the second end ground connection; The inverting input of the first end concatenation operation amplifier of described the 5th resistance, the second end connects the output terminal of described operational amplifier;
Described port connection status detection module comprises the second electric capacity, the 3rd electric capacity, the 6th resistance and the 7th resistance; The first end of described the second electric capacity connects the first output terminal of described power detection module, its second end ground connection; The first end of described the 6th resistance is a voltage input end, and its second end connects the first end of described the 7th resistance, and the second end of the 7th resistance connects the first end of described the 3rd electric capacity, the second end ground connection of the 3rd electric capacity; The first end of described the second electric capacity also is connected with the second end of described the 6th resistance, and the second end of described the 7th resistance also is the output terminal of described port connection status detection module.
2. in the such scheme, also comprise an apparatus of load, its resistance value is 0 ~ 50 Ω; The first end of this design impedance connects the straight-through end of coupling mechanism in the described power detection module, its second end ground connection.
3. in the such scheme, described power detection module also comprises the first inductance, the second inductance, the 4th electric capacity and the 8th resistance; The first end of described the first inductance connects the coupled end of described coupling mechanism, its second end ground connection; The coupled end of the first end butt coupling device of described the 4th electric capacity, its second end connects the anode of described detector diode; The first end of described the second inductance connects the coupled end of described coupling mechanism, its second end ground connection; The first end of described the 8th resistance connects the coupled end of described coupling mechanism, its second end ground connection.
4. in the such scheme, described port connection status detection module also comprises the 3rd inductance and the 5th electric capacity; The first end of described the second electric capacity is connected with the second end of described the 6th resistance by the 3rd inductance; The first end of described the 5th electric capacity connects the second end of described the 6th resistance, its second end ground connection.
5. in the such scheme, described signal processing module has analog-to-digital function, specifically can be the single-chip microcomputer of ADC or this function of tool.
6. in the such scheme, described detector diode is specially a Schottky detection tube.
The utility model principle of work and advantage are as follows:
A kind of circuit for detection of power amplification module output terminal port communicating condition of the utility model mainly is comprised of power detection module, port connection status detection module and signal processing module; The output port of described power amplification module connects the input end of power detection module, the input end of one first output terminal connectivity port connection status detection module of this power detection module, one second output terminal of power detection module then connects one first output terminal of described signal processing module; The output terminal of described port connection status detection module connects one second output terminal of described signal processing module; Form design by said structure, so that the utility model contrast prior art has reliability strong, long service life and lower-cost practical improvement.
Description of drawings
Accompanying drawing 1 is the theory diagram of the utility model most preferred embodiment;
Accompanying drawing 2 is the circuit diagram of power detection module in the utility model most preferred embodiment;
Accompanying drawing 3 is the circuit diagram of the utility model most preferred embodiment middle port connection status detection module;
Accompanying drawing 4 is the utility model most preferred embodiment integrated circuit figure.
In the above accompanying drawing: 1. power amplification module; 2. signal processing module; 3. apparatus of load; 4. coupling mechanism; 5. operational amplifier; 6. input end; 7. isolation end; 8. coupled end; 9. lead directly to end; R1, the first resistance; R2, the second resistance; R3, the 3rd resistance; R4, the 4th resistance; R5, the 5th resistance; R6; R7; R8, the 8th resistance; C1, the first electric capacity; C2, the second electric capacity; C3, the 3rd electric capacity; C4, the 4th electric capacity; C5, the 5th electric capacity; L1, the first inductance; L2, the second inductance; L3, the 3rd inductance; Vcc, voltage input end.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment: shown in accompanying drawing 1,4, a kind of circuit for detection of power amplification module 1 output terminal port communicating condition mainly is comprised of power detection module, port connection status detection module, signal processing module 2 and apparatus of load 3; The output port of described power amplification module 1 connects the input end of power detection module, the input end of one first output terminal connectivity port connection status detection module of this power detection module, one second output terminal of power detection module then connects one first output terminal of described signal processing module 2; The output terminal of described port connection status detection module connects one second output terminal of described signal processing module 2; Described signal processing module 2 has analog-to-digital function, specifically can be the single-chip microcomputer of ADC or this function of tool; The resistance value of described apparatus of load 3 is 0 ~ 50 Ω, and its first end connects the output terminal of described power detection module, the second end ground connection.
Shown in Fig. 2,4, described power detection module comprises coupling mechanism 4, the first inductance L 1, the second inductance L 2, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 8th resistance R 8, detector diode D, the first capacitor C 1, the 4th capacitor C 4 and operational amplifier 5; Described coupling mechanism 4 has input end 6, isolation end 7, coupled end 8 and straight-through end 9, and the input end 6 of described coupling mechanism 4 is the input end of described power detection module, and the straight-through end 9 of described coupling mechanism 4 is the first output terminal of described power detection module; Described operational amplifier 5 has in-phase input end, inverting input, voltage input end Vcc, earth terminal and output terminal, and the output terminal of described operational amplifier 5 is the second output terminal of described power detection module.One end of described the first resistance R 1 is connected other end ground connection with the isolation end 7 of coupling mechanism 4; The first end of described the first inductance L 1 connects the coupled end 8 of described coupling mechanism 4, its second end ground connection; The coupled end 8 of the first end butt coupling device 4 of described the 4th capacitor C 4, its second end connects the anode of described detector diode D; The first end of described the second inductance L 2 connects the coupled end 8 of described coupling mechanism 4, its second end ground connection; The first end of described the 8th resistance R 8 connects the coupled end 8 of described coupling mechanism 4, its second end ground connection; The negative electrode of described detector diode D connects the first end of the first capacitor C 1, the second end ground connection of this first capacitor C 1; The first end of described the second resistance R 2 connects the first end of the first capacitor C 1, and the second end of the second resistance R 2 connects the in-phase input end of described operational amplifier 5; The in-phase input end of the first end concatenation operation amplifier 5 of described the 3rd resistance R 3, the second end ground connection; The inverting input of the first end concatenation operation amplifier 5 of described the 4th resistance R 4, the second end ground connection; The inverting input of the first end concatenation operation amplifier 5 of described the 5th resistance R 5, the second end connects the output terminal of described operational amplifier 5; Wherein, described operational amplifier 5, the 4th resistance R 4 and the 5th resistance R 5 form the forward operation amplifying circuit.
Shown in Fig. 3,4, described port connection status detection module comprises the second capacitor C 2, the 3rd capacitor C 3, the 5th capacitor C 5, the 3rd inductance L 3, the 6th resistance R 6 and the 7th resistance R 7; The first end of described the second capacitor C 2 connects the first output terminal of described power detection module, its second end ground connection; The first end of described the 6th resistance R 6 is a voltage input end Vcc, and its second end connects the first end of described the 7th resistance R 7, and the second end of the 7th resistance R 7 connects the first end of described the 3rd capacitor C 3, the second end ground connection of the 3rd capacitor C 3; The first end of described the second capacitor C 2 is connected with the second end of described the 6th resistance R 6 by the 3rd inductance L 3; The first end of described the 5th capacitor C 5 connects the second end of described the 6th resistance R 6, its second end ground connection; The second end of described the 7th resistance R 7 also is the output terminal of described port connection status detection module.
A kind of circuit for detection of power amplification module output terminal port communicating condition of the utility model mainly is comprised of power detection module, port connection status detection module and signal processing module; The output port of described power amplification module connects the input end of power detection module, the input end of one first output terminal connectivity port connection status detection module of this power detection module, one second output terminal of power detection module then connects one first output terminal of described signal processing module; The output terminal of described port connection status detection module connects one second output terminal of described signal processing module; Form design by said structure, so that the utility model contrast prior art has reliability strong, long service life and lower-cost practical improvement.
Above-described embodiment only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with technique can understand content of the present utility model and according to this enforcement, can not limit protection domain of the present utility model with this.All equivalences of doing according to the utility model Spirit Essence change or modify, and all should be encompassed within the protection domain of the present utility model.

Claims (5)

1. the circuit for detection of power amplification module output terminal port communicating condition is characterized in that: mainly be comprised of power detection module, port connection status detection module and signal processing module; The output port of described power amplification module connects the input end of power detection module, the input end of one first output terminal connectivity port connection status detection module of this power detection module, one second output terminal of power detection module then connects one first output terminal of described signal processing module; The output terminal of described port connection status detection module connects one second output terminal of described signal processing module.
2. circuit according to claim 1, it is characterized in that: described power detection module comprises coupling mechanism, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, detector diode, the first electric capacity and operational amplifier; Described coupling mechanism has input end, isolation end, coupled end and straight-through end, and the input end of described coupling mechanism is the input end of described power detection module, and the straight-through end of described coupling mechanism is the first output terminal of described power detection module; Described operational amplifier has in-phase input end, inverting input, voltage input end, earth terminal and output terminal, and the output terminal of described operational amplifier is the second output terminal of described power detection module; One end of described the first resistance is connected with the isolation end of coupling mechanism, other end ground connection; The coupled end of the anodic bonding coupling mechanism of described detector diode, its negative electrode connects the first end of the first electric capacity, the second end ground connection of this first electric capacity; The first end of described the second resistance connects the first end of the first electric capacity, and the second end of the second resistance connects the in-phase input end of described operational amplifier; The in-phase input end of the first end concatenation operation amplifier of described the 3rd resistance, the second end ground connection; The inverting input of the first end concatenation operation amplifier of described the 4th resistance, the second end ground connection; The inverting input of the first end concatenation operation amplifier of described the 5th resistance, the second end connects the output terminal of described operational amplifier;
Described port connection status detection module comprises the second electric capacity, the 3rd electric capacity, the 6th resistance and the 7th resistance; The first end of described the second electric capacity connects the first output terminal of described power detection module, its second end ground connection; The first end of described the 6th resistance is a voltage input end, and its second end connects the first end of described the 7th resistance, and the second end of the 7th resistance connects the first end of described the 3rd electric capacity, the second end ground connection of the 3rd electric capacity; The first end of described the second electric capacity also is connected with the second end of described the 6th resistance, and the second end of described the 7th resistance also is the output terminal of described port connection status detection module.
3. circuit according to claim 2, it is characterized in that: also comprise an apparatus of load, its resistance value is 0 ~ 50 Ω; The first end of this design impedance connects the straight-through end of coupling mechanism in the described power detection module, its second end ground connection.
4. circuit according to claim 2, it is characterized in that: described power detection module also comprises the first inductance, the second inductance, the 4th electric capacity and the 8th resistance; The first end of described the first inductance connects the coupled end of described coupling mechanism, its second end ground connection; The coupled end of the first end butt coupling device of described the 4th electric capacity, its second end connects the anode of described detector diode; The first end of described the second inductance connects the coupled end of described coupling mechanism, its second end ground connection; The first end of described the 8th resistance connects the coupled end of described coupling mechanism, its second end ground connection.
5. circuit according to claim 2, it is characterized in that: described port connection status detection module also comprises the 3rd inductance and the 5th electric capacity; The first end of described the second electric capacity is connected with the second end of described the 6th resistance by the 3rd inductance; The first end of described the 5th electric capacity connects the second end of described the 6th resistance, its second end ground connection.
CN 201220541725 2012-10-22 2012-10-22 Circuit for detecting output port connection state of power amplification module Expired - Lifetime CN202837465U (en)

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Application Number Priority Date Filing Date Title
CN 201220541725 CN202837465U (en) 2012-10-22 2012-10-22 Circuit for detecting output port connection state of power amplification module

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Application Number Priority Date Filing Date Title
CN 201220541725 CN202837465U (en) 2012-10-22 2012-10-22 Circuit for detecting output port connection state of power amplification module

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CN202837465U true CN202837465U (en) 2013-03-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105353290A (en) * 2015-12-02 2016-02-24 上海航空电器有限公司 Detection circuit for judging on-off state of channel in alternating-current solid-state power controller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105353290A (en) * 2015-12-02 2016-02-24 上海航空电器有限公司 Detection circuit for judging on-off state of channel in alternating-current solid-state power controller

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