CN100568785C - A kind of method and apparatus that detects antenna and feeder line connection status - Google Patents
A kind of method and apparatus that detects antenna and feeder line connection status Download PDFInfo
- Publication number
- CN100568785C CN100568785C CNB2004100095031A CN200410009503A CN100568785C CN 100568785 C CN100568785 C CN 100568785C CN B2004100095031 A CNB2004100095031 A CN B2004100095031A CN 200410009503 A CN200410009503 A CN 200410009503A CN 100568785 C CN100568785 C CN 100568785C
- Authority
- CN
- China
- Prior art keywords
- antenna
- signal
- detection
- circuit
- feedback system
- 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
Images
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
The invention provides a kind of method and apparatus that detects antenna and feeder line connection status, wherein this device comprises: antenna connection detection circuit and antenna detection comparison circuit; Described antenna connection detection circuit is used for being connected with the antenna output end mouth of antenna-feedback system, extracts antenna joint detection signal, and converts the short-circuit condition of opening of antenna-feedback system to the corresponding signal of telecommunication of exporting corresponding different numerical value; Described antenna detection comparison circuit, be used for the antenna joint detection signal of described antenna connection detection circuit output and the comparison threshold of its setting are compared, the output high level sends alarm signal when described antenna joint detection signal level is higher than the setting thresholding.The above-mentioned antenna standing wave ratio of can partly solving this method and apparatus detects and the problem of the real-time difference of the complexity of backward power detection method and many antennas Intelligent Measurement, and the while also can be reduced system cost and complexity.
Description
Technical field
The present invention relates in a kind of communication field to detect whether normal method and apparatus of antenna-feedback system connection status, relate in particular to a kind of antenna output end mouth manifesting the detection method of the antenna-feedback system of direct-current short circuit state antenna with its metal shell at the transceiver output port.
Background technology
Antenna and corresponding feeder system are in the wireless communication system of various communication systems, vitals is absolutely necessary, the antenna feeder subsystem is as the important interface part in the wireless telecommunication system, the reliability of its work has decisive influence for system's operate as normal, very high for the antenna height that can cover communication distance antenna far away in some communication system, cause very big difficulty for the manual detection and the fault judgement of antenna feeder operating state, antenna is as the important input/output interface circuit of wireless telecommunication system simultaneously, and the real-time that the antenna operating state detects is also more and more important.
Usually detect the output voltage standing-wave ratio (VSWR Voltage Standing Wave Ratio) of this port at present in the utilization of transceiver subsystem antenna connector, perhaps the mode of the echo power by detecting this terminal port antennae detects the operating state of antenna, when the VSWR of antenna opening is excessive greater than setting range or echo power, then show corresponding failures of antenna feed system, also have the part system to adopt many antennas Intelligent Measurement technology, by the field intensity of received signal in a plurality of antennas in the middle of the system is judged,, a certain long-term received signal of antenna judge this antenna failure if being lower than other antenna.
For adopting standing wave method to detect the method for antenna feeder, its principle is by extracting forward and the backward power of transceiver subsystem at antennal interface respectively, and become corresponding direct current detection voltage back to obtain the standing-wave ratio of this port this power transfer by the radio-frequency power switching device, VSWR for fear of antenna-feedback system will be subjected to surrounding environment such as temperature, trees, building blocks, sleet, the influence of feeder cable length etc., simultaneously also for the influence of the inner forward and reverse two-way power extraction circuit precision of transceiver subsystem and the influence of forward and reverse radio-frequency power wave detector precision are reduced to minimum degree, usually need to adopt the directional devices of high directivity to extract backward power to the requirement of circuit design is comparatively strict, and forward and reverse power transfer that the high performance radio frequency wave detector of two-way will extract becomes corresponding direct current signal so that carry out corresponding comparison process, in circuit design, consider necessary temperature-compensating mode simultaneously, partial circuit carries out initial calibration in order further to improve accuracy of detection and overcome false alarm and fail to report the alert load that also needs to utilize specific standing-wave ratio to the VSWR state of communication system, the data of calibration are deposited into utilize software to align that backward power is extracted circuit and forward and reverse detector circuit output signal is proofreaied and correct in the systems soft ware, therefore also need to take certain systems soft ware resource.
Utilize the detection port antenna echo power mode can be subjected to surrounding environment such as temperature equally, trees, building blocks, sleet, the influence of feeder cable length etc., its principle with utilize VSWR basic identical, need also to consider that the transceiver inner counter is to the influence of circuit power extraction circuit precision and the influence of extracting the relevant radio-frequency power wave detector precision of circuit with backward power, usually also need to adopt the directional devices of high directivity to extract backward power, and oppositely adopting high performance radio frequency wave detector to convert the backward power of extracting to corresponding direct current signal to carry out corresponding comparison process in the detecting circuit, in circuit design, also to consider simultaneously necessary temperature-compensating mode, partial circuit overcomes false alarm for further improvement accuracy of detection and fails to report the police and still need carry out initial calibration at the backward power state that utilizes certain loads to communication system, the data of calibration are deposited into utilize software to proofread and correct in the systems soft ware, therefore also need to take certain systems soft ware resource extracting circuit by backward power.Whether the operating state that the VSWR by detecting antenna-feedback system and the method for echo power detect antenna-feedback system is normal, go for various forms of antennas, but there are circuit form complexity, the problem high to requirement on devices, in the part system, further improve system reliability in order to overcome possible false alarm, also need to adopt the method for software correction, therefore need take part systems soft ware resource, also have the high problem of cost simultaneously.
Adopt many antennas Intelligent Measurement technology, judge, judge this antenna failure if a certain long-term received signal of antenna is lower than other antenna by received signal field intensity to a plurality of antennas in the system.This method judges by systems soft ware whether antenna-feedback system is normal, hardware cost is lower but cause the low incoming level of certain antenna part time to need usually undesiredly just can send alarm signal when this antenna receiving signal continues for some time for fear of the decline of signal, and the real-time of warning is not high.
And present technique utilizes the part antenna output end to present the characteristic of short circuit for direct current, directly detect the operating state of antenna-feedback system by DC circuit, and whether do not need just can directly to detect antenna work in real time by VSWR and backward echo power signal normal.
Also do not retrieve at present the relevant patent that directly detects the antenna-feedback system operating state by DC circuit.
Summary of the invention
Technical problem to be solved by this invention provides the method and apparatus that detects antenna and feeder line connection status in a kind of communication system, can solve partly that above-mentioned antenna standing wave ratio detects and the problem of the real-time difference of the complexity of backward power detection method and many antennas Intelligent Measurement, the while also can be reduced system cost and complexity.
To achieve these goals, the invention discloses the device that detects antenna and feeder line connection status in a kind of communication system, comprising: antenna connection detection circuit and antenna detection comparison circuit;
Described antenna connection detection circuit is used for being connected with the antenna output end mouth of antenna-feedback system, extracts antenna joint detection signal, and converts the short-circuit condition of opening of antenna-feedback system to the corresponding signal of telecommunication of exporting corresponding different numerical value;
Described antenna detection comparison circuit, be used for the antenna joint detection signal of described antenna connection detection circuit output and the comparison threshold of its setting are compared, the output high level sends alarm signal when described antenna joint detection signal level is higher than the setting thresholding;
Its characteristics are, described antenna connection detection circuit comprises: 2 resistor R 1, R2 that resistance is identical, its resistance is a high impedance with respect to the antenna-feedback system normal impedance, its resistance makes the excess power loss of described antenna connection detection circuit can ignore high-frequency filter capacitor C1 and power supply; One end of described resistor R 1 is connected with the antenna output end mouth, the other end of described resistor R 1 is connected to an end of described resistor R 2 and an end of capacitor C 1 respectively, the other end of described resistor R 2 is connected to described power supply, and the other end of described capacitor C 1 is connected with the antenna metal shell of ground connection.
The above-mentioned detection antenna and the device of feeder line connection status, its characteristics are that described antenna detection comparison circuit is an integrated voltage comparator of having set the comparison threshold level.
The above-mentioned detection antenna and the device of feeder line connection status, its characteristics are that described antenna detection comparison circuit is an integrated voltage comparator of having set the comparison threshold level, and described voltage comparator positive terminal is connected with an end of described capacitor C 1.
The above-mentioned detection antenna and the device of feeder line connection status, its characteristics are that the voltage comparison threshold of described voltage comparator is set at 2/3rds of power supply voltage.
In order to realize above-mentioned purpose better, the present invention also provides the method that detects antenna and feeder line connection status in a kind of communication system, and its characteristics are, comprise the steps:
Step 1, the antenna joint detection signal of reception antenna-feedback system with the signal of telecommunication that short-circuit condition is converted to the corresponding different numerical value of corresponding output of opening of antenna-feedback system, and is exported the described signal of telecommunication;
Step 2, receive the described signal of telecommunication, and the comparison threshold of the described signal of telecommunication and integrated comparator setting is compared, when the described signal of telecommunication is higher than the comparison threshold value, the abnormal signal of described comparator output one expression antenna-feedback system work, and carry out alarm signal; When the described signal of telecommunication is lower than the comparison threshold value, described comparator output one expression antenna-feedback system signal working properly, not output alarm signal.
The above-mentioned detection antenna and the method for feeder line connection status, its characteristics are that in step 1, the signal of telecommunication of output is a voltage signal.
The above-mentioned detection antenna and the method for feeder line connection status, its characteristics are, described integrated comparator is an integrated voltage comparator, when described voltage signal is higher than the comparison threshold value, and the abnormal high level signal of described comparator output one expression antenna-feedback system work; When described voltage signal is lower than the comparison threshold value, described comparator output one expression antenna-feedback system low level signal working properly.
Whether the operating state that adopts DC circuit to detect antenna-feedback system in antenna-feedback system normally very is suitable for the output port of antenna own is the antenna of short-circuit condition to direct current, since this kind antenna output end over the ground direct-current short circuit we just can whether shorted to earth judges whether antenna-feedback system connects normally by antenna-feedback system, the antenna-feedback system malunion is normal, as antenna do not connect or loose contact then system be open-circuit condition, connect and just often be short-circuit condition, can reach purpose by judgement, reduce the system design complexity simultaneously and reduce system cost antenna detection to the antenna port dc state.
The present invention compares with common technology has the following characteristics:
1, the present invention is owing to utilize the antenna connection detection circuit directly to obtain the connection status of antenna signal, need in posting a letter path, not extract antenna feeder forward and reverse power output of the radio frequency output signal relevant with antenna feeder, therefore less to the post a letter influence of path of system, can bring extra power loss to system hardly, existing antenna standing wave ratio and backward power detection technique then inevitably will be introduced extra insertion loss at the path of posting a letter of system, and system works efficient is reduced.
2, the present invention is owing to utilize the antenna connection detection circuit directly to obtain the connection status of antenna signal, do not convert thereof into corresponding d. c. voltage signal again after need in antenna feeder is posted a letter path, not extracting forward and reverse power output of radio frequency output signal, therefore the error in forward and reverse power extraction circuit of having avoided being correlated with, and the error of corresponding radio frequency wave detector, do not need to have considered corresponding temperature-compensation circuit yet, the comparatively simple cost of circuit design reduces, and the simultaneity factor reliability increases.
3, the antenna connection detection circuit is direct to obtain real-time connection status of antenna signal owing to utilizing in the present invention, and judges directly according to this whether antenna-feedback system work is normal, has therefore overcome the problem of many antennas Intelligent Measurement technology real-time difference.
4, because the present invention is based on the short circuit of characteristic utilize part antenna output end mouth and shell to present to(for) direct current, thereby open short-circuit condition by DC circuit detection antenna output end mouth and judge whether antenna-feedback system work is normal, not for the antenna-feedback system of short-circuit condition can't adopt, the method detection technique of the VSWR of antenna-feedback system and echo power and many antennas Intelligent Measurement technology then can be used for various antennas for antenna and earth terminal.
Be described in further detail below in conjunction with the enforcement of accompanying drawing technical scheme.
Description of drawings
Fig. 1 is a kind of DC circuit antenna-feedback system condition detection method flow chart provided by the invention
Fig. 2 is a DC circuit antenna-feedback system working state detecting method schematic block diagram provided by the invention.
Specific embodiments
The present invention is made up of following 2 parts: antenna connection detection circuit 2, antenna detection comparison circuit 3.Antenna connection detection circuit major function is to extract antenna-feedback system antenna 1 joint detection signal, need be with the voltage signal that short-circuit condition be converted to the corresponding different numerical value of corresponding output of opening of antenna-feedback system 1, antenna 1 connection detection circuit is subtracted the harmful effect of antenna-feedback system cause minimum simultaneously.
Antenna detection comparison circuit 2 compares the comparison threshold that antenna 1 connects antenna joint detection signal that signal extracting circuit obtains and 3 settings of antenna detection comparison circuit, the detection signal level that obtains when antenna joint detection signal circuit 1 is higher than output high level when setting thresholding, sends alarm signal.
The DC circuit of utilizing provided by the invention is carried out the method that the antenna-feedback system operating state detects, and comprises the steps that flow chart as shown in Figure 1.
Step S101, the antenna feeder joint detection signal of line connection detection circuit 2 outputs, this signal are input to antenna and connect in the comparison circuit 3;
Step S102, this antenna connect comparison circuit 3 and have set the comparison threshold level;
Step S103, utilize this integrated comparator 31 to compare, the comparative level thresholding that antenna feeder joint detection signal and this comparator 31 are set compares, the antenna output end mouth is in open-circuit condition during same day feeder fault or loose contact, the antenna feeder detection signal of antenna connection detection circuit 2 outputs is higher than the comparison threshold that this comparator 31 is set, and these comparator 31 output high level alarm signals show antenna-feedback system work undesired (step S104).
When antenna feeder is in normal operating conditions, the antenna feeder detection signal of antenna connection detection circuit 2 outputs is lower than the comparison threshold that this comparator 31 is set, and these comparator circuit 31 output low levels show antenna-feedback system operating state normal (step S105).
In concrete enforcement, this antenna connection detection circuit 2 is by the R1 resistor 21 of the identical high value of 2 resistances, R2 resistor 22 and 1 C1 high-frequency filter capacitor 23 and corresponding power supply 24 compositions, this antenna detection comparison circuit 3 adopts integrated operational amplifier and corresponding peripheral components to constitute voltage comparator 31, the voltage comparison threshold is set at about 2/3rds of supply voltage, because the impedance phase of R1 resistor 21 is very high for the impedance of common 50 Ω of antenna-feedback system, therefore the excess power loss that brings owing to antenna connection detection circuit 2 can be ignored substantially.
When the antenna-feedback system operate as normal, because antenna output end mouth 11 is the direct-current short circuit state with antenna metal shell 12, this shell 12 is by the antenna interface circuit ground connection 32 of transceiver subsystem, therefore antennal interface is the direct current earth potential, the output voltage of antenna connection detection circuit 2 is that power supply obtains being 1/2nd of supply voltage by 2 electric resistance partial pressures, again through delivering to voltage comparator 31 positive terminal that constitute by integrated transporting discharging after capacitor C 1 filtering, because this voltage is lower than the setting thresholding of integrated transporting discharging by the comparator that constitutes, antenna detection comparison circuit output low level indication antenna-feedback system is working properly.
And when antenna 1 malunion when fracture appears in normal or antenna-feedback system; antenna output end mouth 11 can't form by the path of transceiver subsystem ground connection by its metal shell 12 again; antenna interface circuit is in the high-impedance state of suspension; the output voltage of antenna connection detection circuit 2 is because the antennal interface end that links to each other with R1 resistor 21 is a high resistant; therefore its output voltage is a supply voltage; this voltage has surpassed the threshold level of the voltage comparator 31 of integrated operational amplifier formation, so the 3 output high level indication antenna-feedback system work of antenna detection comparison circuit are undesired.
The circuit that is made of R1 resistor 21, R2 resistor 22, C1 filter capacitor 23 and integrated transporting discharging and peripheral circuit thereof just can be finished the function that the antenna feeder connection status detects like this.
In sum, antenna feeder connection status inspection method of the present invention and device have the advantages that formation is simple, realization is with low cost, the development technique risk is little, can partly replace the VSWR commonly used in the antenna-feedback system and method detection technique and many antennas Intelligent Measurement technology of echo power.
Foregoing only is an optimum implementation of the present invention, and it is not to be used for limiting the specific embodiment of the present invention, and all modification and changes of carrying out according to the main inventive concept of this method all should belong to the desired protection range of claims of the present invention.
Claims (7)
1, a kind of device that detects antenna and feeder line connection status is characterized in that, comprising: antenna connection detection circuit and antenna detection comparison circuit;
Described antenna connection detection circuit is used for being connected with the antenna output end mouth of antenna-feedback system, extracts antenna joint detection signal, and converts the short-circuit condition of opening of antenna-feedback system to the corresponding signal of telecommunication of exporting corresponding different numerical value;
Described antenna detection comparison circuit, be used for the antenna joint detection signal of described antenna connection detection circuit output and the comparison threshold of its setting are compared, the output high level sends alarm signal when described antenna joint detection signal level is higher than the setting thresholding;
Described antenna connection detection circuit comprises: 2 resistor R 1, R2 that resistance is identical, its resistance is a high impedance with respect to the antenna-feedback system normal impedance, its resistance makes the excess power loss of described antenna connection detection circuit can ignore high-frequency filter capacitor C1 and power supply; One end of described resistor R 1 is connected with the antenna output end mouth, the other end of described resistor R 1 is connected to an end of described resistor R 2 and an end of capacitor C 1 respectively, the other end of described resistor R 2 is connected to described power supply, and the other end of described capacitor C 1 is connected with the antenna metal shell of ground connection.
2, the device of detection antenna according to claim 1 and feeder line connection status is characterized in that, described antenna detection comparison circuit is an integrated voltage comparator of having set the comparison threshold level.
3, the device of detection antenna according to claim 1 and feeder line connection status, it is characterized in that, described antenna detection comparison circuit is an integrated voltage comparator of having set the comparison threshold level, and described voltage comparator positive terminal is connected with an end of described capacitor C 1.
4, according to the device of claim 2 or 3 described detection antennas and feeder line connection status, it is characterized in that the voltage comparison threshold of described voltage comparator is set at 2/3rds of power supply voltage.
5, a kind of method of using the arbitrary described device of claim 1 to 4 to detect antenna and feeder line connection status is characterized in that, comprises the steps:
Step 1, the antenna joint detection signal of reception antenna-feedback system with the signal of telecommunication that short-circuit condition is converted to the corresponding different numerical value of corresponding output of opening of antenna-feedback system, and is exported the described signal of telecommunication;
Step 2, receive the described signal of telecommunication, and the comparison threshold of the described signal of telecommunication and integrated comparator setting is compared, when the described signal of telecommunication is higher than the comparison threshold value, the abnormal signal of described comparator output one expression antenna-feedback system work, and carry out alarm signal; When the described signal of telecommunication is lower than the comparison threshold value, described comparator output one expression antenna-feedback system signal working properly, not output alarm signal.
6, the method for detection antenna according to claim 5 and feeder line connection status is characterized in that, in step 1, the signal of telecommunication of output is a voltage signal.
7, the method for detection antenna according to claim 6 and feeder line connection status, it is characterized in that, described integrated comparator is an integrated voltage comparator, when described voltage signal is higher than the comparison threshold value, and the abnormal high level signal of described comparator output one expression antenna-feedback system work; When described voltage signal is lower than the comparison threshold value, described comparator output one expression antenna-feedback system low level signal working properly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100095031A CN100568785C (en) | 2004-08-31 | 2004-08-31 | A kind of method and apparatus that detects antenna and feeder line connection status |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100095031A CN100568785C (en) | 2004-08-31 | 2004-08-31 | A kind of method and apparatus that detects antenna and feeder line connection status |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1744476A CN1744476A (en) | 2006-03-08 |
| CN100568785C true CN100568785C (en) | 2009-12-09 |
Family
ID=36139704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100095031A Expired - Fee Related CN100568785C (en) | 2004-08-31 | 2004-08-31 | A kind of method and apparatus that detects antenna and feeder line connection status |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100568785C (en) |
Families Citing this family (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101135710B (en) * | 2007-08-08 | 2010-12-08 | 中兴通讯股份有限公司 | Circuit for detecting radio-frequency power amplifier output terminal port communicating condition |
| CN101119119B (en) * | 2007-08-23 | 2010-12-22 | 华为技术有限公司 | Method and apparatus for detecting open circuit fault of transmitter |
| CN101541034B (en) * | 2008-03-18 | 2012-04-11 | 中兴通讯股份有限公司 | Method and device for authenticating standing-wave ratio alarm |
| CN101741481B (en) * | 2008-11-21 | 2013-04-03 | 中国移动通信集团河南有限公司 | Antenna feeder system performance test method and device |
| CN101600218B (en) * | 2009-07-01 | 2011-12-21 | 华为技术有限公司 | Method and device for testing failures of antenna feed system |
| CN102023254B (en) * | 2009-09-16 | 2012-11-21 | 启碁科技股份有限公司 | Antenna detection circuit and relative digital broadcast receiver thereof |
| CN102237934A (en) * | 2010-04-26 | 2011-11-09 | 中国移动通信集团公司 | Test method of terminal data transmission performance, system and apparatus thereof |
| WO2011110128A2 (en) * | 2011-04-25 | 2011-09-15 | 华为技术有限公司 | Detection device, communication system and detection method |
| CN103581972B (en) * | 2012-08-03 | 2017-05-31 | 中国移动通信集团甘肃有限公司 | A kind of indoor distributed failures of antenna feed system processing unit and method |
| CN102890215B (en) * | 2012-10-24 | 2015-04-08 | 福建师范大学 | Antenna state detection circuit for ship automatic identification system terminal |
| CN103067103A (en) * | 2012-12-27 | 2013-04-24 | 昌辉汽车电气系统（安徽）有限公司 | Signal generator with self-diagnostic function |
| CN103604711B (en) * | 2013-11-16 | 2016-04-06 | 浙江中星光电子科技有限公司 | A kind of proving installation of rotary joint of satellite antenna for ship |
| CN104714116A (en) * | 2013-12-12 | 2015-06-17 | 上海博泰悦臻网络技术服务有限公司 | Antenna detection circuit |
| CN105791525B (en) * | 2014-12-25 | 2020-03-17 | 中兴通讯股份有限公司 | Grounding adjustment method and device |
| CN106550391A (en) * | 2015-09-23 | 2017-03-29 | 中兴通讯股份有限公司 | A kind of antenna is in level detecting apparatus, method and base station |
| CN105277826B (en) * | 2015-10-23 | 2019-01-25 | 电子科技大学 | Array antenna fault diagnosis system |
| CN105866611A (en) * | 2016-04-28 | 2016-08-17 | 乐视控股（北京）有限公司 | Antenna plugging state detection device |
| CN105897292A (en) * | 2016-06-23 | 2016-08-24 | 泉州市中研智能机电研究院有限公司 | Interphone with function of detecting antenna fault by temperature |
| CN105871404A (en) * | 2016-06-23 | 2016-08-17 | 泉州市中研智能机电研究院有限公司 | Interphone capable of detecting antenna faults by overflow |
| CN107688131B (en) * | 2016-08-06 | 2020-11-10 | 国基电子（上海）有限公司 | MIMO antenna system |
| CN106374422B (en) * | 2016-08-24 | 2018-10-12 | 云顶科技（江苏）有限公司 | A kind of detection protection circuit based on active antenna |
| CN106713626B (en) * | 2016-12-13 | 2019-12-06 | 青岛海信移动通信技术股份有限公司 | State detection device for mobile terminal and mobile terminal |
| CN107356803B (en) * | 2017-07-14 | 2020-12-29 | 国家新闻出版广电总局四九一台 | Safety detection equipment for overhauling high-power short-wave antenna feeder line |
| CN107976587B (en) * | 2017-12-21 | 2024-04-09 | 中国电子科技集团公司第五十四研究所 | Portable antenna feed system tester |
| CN109444639A (en) * | 2018-11-28 | 2019-03-08 | 京信通信系统（中国）有限公司 | Feeder line condition detecting device, method and device |
| CN111181661A (en) * | 2020-01-17 | 2020-05-19 | 深圳市资福医疗技术有限公司 | Method for detecting antenna connection state |
-
2004
- 2004-08-31 CN CNB2004100095031A patent/CN100568785C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1744476A (en) | 2006-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100568785C (en) | A kind of method and apparatus that detects antenna and feeder line connection status | |
| CN101135710B (en) | Circuit for detecting radio-frequency power amplifier output terminal port communicating condition | |
| CN101183905A (en) | Antenna feed fault detection device and method | |
| CN102014415B (en) | Method for detecting base station feed system on line, base station system and antenna suite | |
| CN101119119B (en) | Method and apparatus for detecting open circuit fault of transmitter | |
| US20040166909A1 (en) | Apparatus and method for monitoring antenna state of mobile station | |
| CN103634016A (en) | Tunable impedance matching circuit | |
| CN101483281A (en) | Method and apparatus for controlling terminal antenna | |
| CN102427385A (en) | Backup WiFi light carrier wireless switching system | |
| CN103491565A (en) | System and method for testing communication terminal radio frequency | |
| CN107919919B (en) | Dual-channel transmitting power switching detection circuit, device and mobile terminal | |
| CN113612496A (en) | Automatic radio frequency matching control system, base station system and method | |
| CN102680844A (en) | Antenna connection status detection device and detection method thereof | |
| CN103227683B (en) | A kind of method and device RRU fault being carried out to joint-detection | |
| CN211478622U (en) | Mobile terminal and automatic detection circuit of built-in antenna thereof | |
| CN202372599U (en) | Antenna feeder detection system | |
| CN113708852A (en) | Antenna in-situ detection method and device | |
| US11245180B2 (en) | Base station antenna unified system for sensors and test calls | |
| CN210665995U (en) | Radio frequency switch-based on-site detection circuit for RFID reader-writer antenna | |
| CN107688131B (en) | MIMO antenna system | |
| CN1728611A (en) | Real time centralized monitoring device for channels in radio frequency in time division duplexing system | |
| CN215818132U (en) | Automatic radio frequency matching control system and base station system | |
| CN201075546Y (en) | Battery connector and mobile communication apparatus having the battery connector | |
| CN113315587A (en) | Radio frequency link working state detection method, related detection device and system | |
| CN205961112U (en) | Channel auto -change over device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID BEIJING ELECTRIC POWER COMPANY CHINA TE Effective date: 20140129 Owner name: BEIJING POWER ECONOMIC RESEARCH INSTITUTE Free format text: FORMER OWNER: ZTE CORPORATION Effective date: 20140129 |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 518057 SHENZHEN, GUANGDONG PROVINCE TO: 100055 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140129 Address after: 100055 No. 15 West Street, Guanganmen station, Beijing, Xicheng District Patentee after: State Power Economic Research Institute Patentee after: State Grid Beijing Electric Power Company Patentee after: CHINA TECHNOLOGY EXCHANGE CO., LTD. Address before: 518057 Nanshan District, Guangdong high tech Industrial Park, science and Technology Industrial Park, ZTE building, block A, layer 6, layer Patentee before: ZTE Corporation |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091209 Termination date: 20150831 |
|
| EXPY | Termination of patent right or utility model |