CN1368828A - Automatic measuring technique for antenna isolating level of direct amplifying station with antenna transmission - Google Patents
Automatic measuring technique for antenna isolating level of direct amplifying station with antenna transmission Download PDFInfo
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- CN1368828A CN1368828A CN02115593A CN02115593A CN1368828A CN 1368828 A CN1368828 A CN 1368828A CN 02115593 A CN02115593 A CN 02115593A CN 02115593 A CN02115593 A CN 02115593A CN 1368828 A CN1368828 A CN 1368828A
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Abstract
This invention relates to an automatic testing technology for antenna isolation degree of wireless transmitting station containing a detecting module which is composed of RF signal generator, RF signal treatment and background control analyzer display, antenna 1 and 2, among which RF generator generates a RF signal controlled by background analysis, transmitton via antenna 1 and received by antenna 2 than enters into the background analysis unit after being treated by RF signal treatment unit and finally displays so as to test antenna isolation degree of direct transmitting station timely by monitors. This invention suits the production of the present stations (containing GSM900MHz, DCS1800MHz, CDMA800MH-z and other frequency bands)
Description
Technical field
The invention belongs to mobile communication technology, is a kind of automatic measuring technique for antenna isolating level of direct amplifying station with antenna transmission specifically.
Background technology
Mobile communication has obtained huge development at home, and present domestic GSM mobile handset user has broken through 100,000,000 users, simultaneous CHINAUNICOM cdma system open-minded, and what can reckon with is the new round great development of mobile communication.Along with mobile communication in Development in China, because China is scarcely populated, the population distribution inequality, in a lot of places, for example rural area, highway, railway or the like place because telephone traffic is little and the consideration of cost, can not all utilize the base station to cover, therefore at the heterogeneous networks of commmunication company and CHINAUNICOM, all need a large amount of repeaters to carry out the covering of mobile communications network.In the extensive application of present repeater, wireless discharging-directly station is convenient with its addressing, and transmission is simple, has accounted for leading position in application.And in the opening process of wireless discharging-directly station, the primary goal of considering when isolation between antennas (the field intensity difference between donor antenna and the retransmitting antenna port) is system's consideration and project installation, if the isolation between donor antenna and the retransmitting antenna is during less than the gain of the upstream or downstream of system, can cause the direct discharging station performance to descend rapidly, system's self-excitation be can cause when serious, and even the communication effect and the index of base station had influence on.
Second kind of way is to rely on signal source and frequency spectrograph test, this test way is to launch up/downlink radio-frequency signal in the frequency range of place, repeater by signal source and donor antenna, receive this signal at another root antenna by frequency spectrograph, then transmit and received signal between intensity difference be isolation between antennas, this way is more accurate a kind of way, but it need be carried into the building site with the valuable instrument of heaviness in engineering opening with when safeguarding, therefore seeming neither be very convenient.
Summary of the invention
The purpose of this invention is to provide a kind of fairly simple and accurate automatic measuring technique for antenna isolating level of direct amplifying station with antenna transmission, thereby in engineering opening with when safeguarding, can test out the isolation between the antenna in the time of need not carrying heavy instrument more convenient, exactly, to overcome above-mentioned deficiency.
To achieve these goals, characteristics of the present invention are: make the detection module of an integrated signal source and spectrum analyzer basic test function, with it as a self-existent module;
Above-mentioned detection module is made up of RF signal generator, RF signal processing unit, control analysis unit, backstage, display unit, antenna 1 and antenna 2, wherein: produce a RF signal by backstage control analysis unit controls RF generator, by antenna 1 emission, the RF signal that antenna 2 reception antennas 1 are launched, after the RF signal processing unit processes, enter control analysis unit, backstage, control analysis unit, backstage shows the result by display unit;
Above-mentioned standalone module is built in the present wireless discharging-directly station, with the RF signal processing unit of this module and RF signal synthesizer respectively with the repeater down going channel in directional coupler be connected with mixer, wherein the RF signal processing unit is accepted the signal of the directional coupler in the down going channel of repeater in the module, and the RF signal synthesizer outputs signal to the mixer in the down going channel of repeater in the module;
Above-mentioned RF generator is made of RF signal synthesis unit, RF output amplitude control unit and RF output amplitude power detecting unit, wherein the RF signal synthesis unit is used to produce armed RF signal, this signal is before being sent to antenna 1, must advanced line amplitude control, to send signal by control analysis unit, backstage and be adjusted into suitable power, and then pass through the power that power detector detects this signal, through after this two-stage, this signal can be sent to antenna 1 and launch;
Above-mentioned RF signal produces and adopts the PLL circuit;
Above-mentioned RF signal processing unit is made of HMC194 module, local oscillator unit, mixing unit, narrow-band filtering unit, amplifying unit and power detecting unit, after the signal that wherein receives or be used for self check receives, to enter frequency mixer and the local oscillation signal mixing obtains intermediate frequency, this intermediate-freuqncy signal is through the one-level narrow-band filtering, select measured signal, enter amplifier then and carry out gain compensation, cooperate the power detection of finishing received signal with power detecting unit by backstage control the most at last.
Because the present invention adopts it is built in our the present wireless discharging-directly station, make equipment management personnel can monitor the isolation between antennas of repeater in real time, the present invention is applicable to the production and the engineering application of present repeater (the wireless transmission repeater that contains GSM900MHz, DCS1800MHz, CDMA800MHz and other frequency range).
Description of drawings
Fig. 1 is existing repeater principle schematic.
Fig. 2 is the existing isolation between antennas theory diagram that detects the repeater.
Fig. 3 is a principle of the invention schematic diagram.
Fig. 4 is connected block diagram for the present invention with existing repeater.
Fig. 5 is a RF signal generator theory diagram of the present invention.
Fig. 6 is a RF signal generating circuit block diagram of the present invention.
Fig. 7 is a RF signal processing unit theory diagram of the present invention.
Fig. 8 is integrated circuit scheme of the present invention and structural plan.
Embodiment
Further specify the present invention below in conjunction with accompanying drawing.
As can be seen from Figure 1, the operation principle of existing wireless discharging-directly station is for being accepted the downstream signal of base station by the donor antenna of repeater, after the radio system amplification and processing by oneself, retransmitting antenna by the repeater is emitted to mobile phone again, simultaneously in upward signal, accept the upward signal of mobile phone by the retransmitting antenna of repeater, after same the processing, the donor antenna by the repeater is emitted to the base station again.Therefore as seen, for guaranteeing the direct discharging station operate as normal, the isolation between its donor antenna and the retransmitting antenna must be greater than the descending gain G of repeater
DLWith up gain G
UL, generally on engineering, get 15dB, that is:
I
L＞Max(G
DL+15，G
UL+15)
But because the position that wireless discharging-directly station is installed is varied, after its direct discharging station was opened, because the variation of all external environment conditions, for example antenna was blown askew direction, and antenna face is built high building or the like, all can cause the variation of the isolation between antennas of system this moment.Therefore, how accurately measuring isolation between antennas IL is the matter of utmost importance that wireless discharging-directly station is opened and safeguarded.When wireless discharging-directly station is in the past opened, when not having test condition, generally be that the employing experience is estimated, but this mode there is very strong subjective factor, often produces deviation in the application.
This test way among Fig. 2 is to launch up/downlink radio-frequency signal in the frequency range of place, repeater by signal source and donor antenna, receive this signal at another root antenna by frequency spectrograph, then transmit and received signal between intensity difference be isolation between antennas, this way is more accurate a kind of way, but it need be carried into the building site with the valuable instrument of heaviness in engineering opening with when safeguarding, therefore seeming neither be very convenient.
In Fig. 3, the RF signal generator has been simulated the basic function of signal source, the basic function of having finished by spectrum analyzer before the RF signal processing has then been finished, by this figure as seen, the roughly operation principle of this module is, at first partly control the RF generator and produce a RF signal by the backstage control analysis, and launch by antenna 1, here mandatory declaration be, before this RF signal is launched away, the RF signal generator has also carried out amplitude control to it, power detection is handled, the power of the RF signal that antenna 1 is sent after handling so just has been detected, this RF signal aloft receives with aft antenna 2, by the RF signal processing, detect the power of the RF signal that antenna 2 receiving ports receive, like this, after the received power of the transmitting power of antenna 1 and antenna 2 all was detected, the backstage analysis software can obtain the value of isolation between antennas apace by simple subtraction process.
The cooperating mode of module of the present invention and repeater can be divided into two kinds:
(1) with it as a self-existent module, and in the engineering opening of wireless discharging-directly station
As an auxiliary equipment.
(2) it is built in our the present wireless discharging-directly station, makes equipment management personnel can monitor the isolation between antennas (see figure 4) of repeater in real time.
The groundwork step of this module was divided into for three steps:
(1) partly divide to produce frequency difference in a series of activities band, radiofrequency signal that amplitude is different by the backstage control analysis, launch by antenna by the RF signal generator.
(2) signal that receives by the analysis of RF signal processing, and with result transmission to backstage control analysis part.
(3), calculate the isolation between antennas of this moment with statistics formula average algorithm by backstage control analysis partial analysis result.
In addition, in the testing process of actual antennas isolation,, in the conceptual design of this module, also should consider the self-checking function of module in order to guarantee the reliability of testing result.
The RF signal synthesis unit is used to produce armed RF signal as can be seen from Figure 5, this signal is before being sent to antenna 1, must advanced line amplitude control, be adjusted into suitable power with sending signal, and then the process power detector detects the power of this signal, through after this two-stage, this signal can be sent to antenna 1 and launch.The RF signal produces the general PLL of employing circuit (see figure 6).Wherein, reference source can produce with crystal oscillator or with DDS (Direct Digital is synthetic) mode.The purpose of output amplitude control is the accurate output amplitude in conditioning signal source, and the realization of this partial function is generally finished with numerical-control attenuator.
As seen from Figure 7, the detection of received signal power is to be undertaken by the mode of intermediate frequency power detection, after the signal that receives or be used for self check receives, to enter frequency mixer and the local oscillation signal mixing obtains intermediate frequency, this intermediate-freuqncy signal is through the one-level narrow-band filtering, select measured signal, enter amplifier then and carry out gain compensation, cooperate the power detection of finishing received signal with power detection part by backstage control the most at last.
Claims (6)
1, a kind of automatic measuring technique for antenna isolating level of direct amplifying station with antenna transmission is characterized in that: make the detection module of an integrated signal source and spectrum analyzer basic test function, with it as a self-existent module,
2, according to the described automatic measuring technique for antenna isolating level of direct amplifying station with antenna transmission of claim 1, it is characterized in that: detection module is made up of RF signal generator, RF signal processing unit, control analysis unit, backstage, display unit, antenna 1 and antenna 2, wherein: produce a RF signal by backstage control analysis unit controls RF generator, by antenna 1 emission, the RF signal that antenna 2 reception antennas 1 are launched, after the RF signal processing unit processes, enter control analysis unit, backstage, control analysis unit, backstage shows the result by display unit;
3, according to claim 1 or 2 described automatic measuring technique for antenna isolating level of direct amplifying station with antenna transmission, it is characterized in that: standalone module is built in the present wireless discharging-directly station, with the RF signal processing unit of this module and RF signal synthesizer respectively with the repeater down going channel in directional coupler be connected with mixer, wherein the RF signal processing unit is accepted the signal of the directional coupler in the down going channel of repeater in the module, and the RF signal synthesizer outputs signal to the mixer in the down going channel of repeater in the module;
4, according to claim 1 or 2 described automatic measuring technique for antenna isolating level of direct amplifying station with antenna transmission, it is characterized in that: above-mentioned RF generator is by the RF signal synthesis unit, RF output amplitude control unit and RF output amplitude power detecting unit constitute, wherein the RF signal synthesis unit is used to produce armed RF signal, this signal is before being sent to antenna 1, must advanced line amplitude control, to send signal by control analysis unit, backstage and be adjusted into suitable power, and then the process power detector detects the power of this signal, through after this two-stage, this signal can be sent to antenna 1 and launch;
5, according to the described automatic measuring technique for antenna isolating level of direct amplifying station with antenna transmission of claim 4, it is characterized in that: the RF signal produces and adopts the PLL circuit;
6, according to claim 1 or 2 described automatic measuring technique for antenna isolating level of direct amplifying station with antenna transmission, it is characterized in that: above-mentioned RF signal processing unit is by the HMC194 module, the local oscillator unit, the mixing unit, the narrow-band filtering unit, amplifying unit and power detecting unit constitute, after the signal that wherein receives or be used for self check receives, to enter frequency mixer and the local oscillation signal mixing obtains intermediate frequency, this intermediate-freuqncy signal is through the one-level narrow-band filtering, select measured signal, enter amplifier then and carry out gain compensation, cooperate the power detection of finishing received signal with power detecting unit by backstage control the most at last.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021155933A CN1152587C (en) | 2002-03-12 | 2002-03-12 | Automatic measuring technique for antenna isolating level of direct amplifying station with antenna transmission |
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|---|---|---|---|
| CNB021155933A CN1152587C (en) | 2002-03-12 | 2002-03-12 | Automatic measuring technique for antenna isolating level of direct amplifying station with antenna transmission |
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| CN1368828A true CN1368828A (en) | 2002-09-11 |
| CN1152587C CN1152587C (en) | 2004-06-02 |
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| CNB021155933A Expired - Fee Related CN1152587C (en) | 2002-03-12 | 2002-03-12 | Automatic measuring technique for antenna isolating level of direct amplifying station with antenna transmission |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1306723C (en) * | 2002-12-31 | 2007-03-21 | 北京信威通信技术股份有限公司 | Direct transmitting station for synchronous CDMA system and its control |
| CN1324911C (en) * | 2004-01-14 | 2007-07-04 | 中兴通讯股份有限公司 | Test apparatus and test method for isolation between antennas of wireless co-frequency direct amplifying station |
| CN100391123C (en) * | 2004-04-23 | 2008-05-28 | 大唐移动通信设备有限公司 | Repeater for automatic testing of antenna isolation and test method thereof |
| CN100459749C (en) * | 2005-03-16 | 2009-02-04 | 深圳国人通信有限公司 | Broadband adjustable directly playing station |
| WO2011023003A1 (en) * | 2009-08-25 | 2011-03-03 | Empire Technology Development Llc | Calculating antenna performance |
| WO2012019504A1 (en) * | 2010-08-13 | 2012-02-16 | 中兴通讯股份有限公司 | Reconfigurable wireless node and method of coordinating operations with macrocell wireless access node |
| CN101615958B (en) * | 2008-06-27 | 2012-07-18 | 京信通信系统（中国）有限公司 | Method for detecting isolation between antennas for digital radio repeater system |
| CN102932071A (en) * | 2011-08-10 | 2013-02-13 | 京信通信系统（中国）有限公司 | Offline isolation detection method for digital repeater |
| CN104869627A (en) * | 2014-02-26 | 2015-08-26 | 中国移动通信集团公司 | Signal amplification gain adjustment method, device and related equipment |
| CN107566067A (en) * | 2017-09-27 | 2018-01-09 | 四川省大见通信技术有限公司 | A kind of method with CW signal detections with frequency interport isolation |
| CN107872284A (en) * | 2016-09-26 | 2018-04-03 | 展讯通信（上海）有限公司 | The Self-excitation Detection method and device of wireless discharging-directly station |
| CN108092724A (en) * | 2016-11-17 | 2018-05-29 | 翌勤通讯股份有限公司 | Symmetric repeater and method for measuring antenna isolation thereof |
-
2002
- 2002-03-12 CN CNB021155933A patent/CN1152587C/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1306723C (en) * | 2002-12-31 | 2007-03-21 | 北京信威通信技术股份有限公司 | Direct transmitting station for synchronous CDMA system and its control |
| CN1324911C (en) * | 2004-01-14 | 2007-07-04 | 中兴通讯股份有限公司 | Test apparatus and test method for isolation between antennas of wireless co-frequency direct amplifying station |
| CN100391123C (en) * | 2004-04-23 | 2008-05-28 | 大唐移动通信设备有限公司 | Repeater for automatic testing of antenna isolation and test method thereof |
| CN100459749C (en) * | 2005-03-16 | 2009-02-04 | 深圳国人通信有限公司 | Broadband adjustable directly playing station |
| CN101615958B (en) * | 2008-06-27 | 2012-07-18 | 京信通信系统（中国）有限公司 | Method for detecting isolation between antennas for digital radio repeater system |
| US8902111B2 (en) | 2009-08-25 | 2014-12-02 | Empire Technology Development Llc | Calculating antenna performance |
| WO2011023003A1 (en) * | 2009-08-25 | 2011-03-03 | Empire Technology Development Llc | Calculating antenna performance |
| WO2012019504A1 (en) * | 2010-08-13 | 2012-02-16 | 中兴通讯股份有限公司 | Reconfigurable wireless node and method of coordinating operations with macrocell wireless access node |
| CN102932071A (en) * | 2011-08-10 | 2013-02-13 | 京信通信系统（中国）有限公司 | Offline isolation detection method for digital repeater |
| CN102932071B (en) * | 2011-08-10 | 2015-02-11 | 京信通信系统（中国）有限公司 | Offline isolation detection method for digital repeater |
| CN104869627A (en) * | 2014-02-26 | 2015-08-26 | 中国移动通信集团公司 | Signal amplification gain adjustment method, device and related equipment |
| CN104869627B (en) * | 2014-02-26 | 2019-02-05 | 中国移动通信集团公司 | A kind of signal gain amplifier method of adjustment, device and relevant device |
| CN107872284A (en) * | 2016-09-26 | 2018-04-03 | 展讯通信（上海）有限公司 | The Self-excitation Detection method and device of wireless discharging-directly station |
| CN107872284B (en) * | 2016-09-26 | 2021-01-05 | 展讯通信（上海）有限公司 | Self-excitation detection method and device of wireless repeater |
| CN108092724A (en) * | 2016-11-17 | 2018-05-29 | 翌勤通讯股份有限公司 | Symmetric repeater and method for measuring antenna isolation thereof |
| CN107566067A (en) * | 2017-09-27 | 2018-01-09 | 四川省大见通信技术有限公司 | A kind of method with CW signal detections with frequency interport isolation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1152587C (en) | 2004-06-02 |
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Granted publication date: 20040602 |