CN2396575Y - Radio frequency active antenna - Google Patents
Radio frequency active antenna Download PDFInfo
- Publication number
- CN2396575Y CN2396575Y CN 99240523 CN99240523U CN2396575Y CN 2396575 Y CN2396575 Y CN 2396575Y CN 99240523 CN99240523 CN 99240523 CN 99240523 U CN99240523 U CN 99240523U CN 2396575 Y CN2396575 Y CN 2396575Y
- Authority
- CN
- China
- Prior art keywords
- amplifier
- triode
- power splitter
- links
- radio frequency
- 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
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The utility model relates to a radio frequency active antenna characterized in that the utility model is composed of a two-way amplifier, a power splitter, a passive antenna element, a divider circuit, etc., wherein, the two-way port of the amplifier is connected with the power splitter, and the other two ports of the power splitter are respectively connected with the passive antenna element and a 'next antenna', while the power supply end (down, up) of the amplifier is connected with the anode of a power supply and the two pins of the divider circuit respectively. The grounding end (and) of the amplifier is earthed. The utility model has small volume and goodly appearance, is adjustable, can provide the gain as high as 40DB and enhance the signal-to-noise ratio by more than 20DB, which lowers the requirement to radio frequency cables.
Description
The utility model belongs to the indoor ceiling mount antenna that a kind of mobile communication system is used.
Develop at a too fast speed owing to cellular mobile communication in China, make the construction and the network operator of system have no time to attend to little " blind area " for many years always, and attentiveness is placed on always in the dilatation and big " blind area " of system, and the quantity of by chance little " blind area " is much more, such as: in market place builet below the ground, parking lot, the building, tunnel, subway, station, harbour, airport etc., be seen everywhere.Simultaneously, because the continuous expansion of system will be adopted microcellulor technology (a lot of cities have begun to adopt in fact) in the compact district, down town, make the quantity of indoor " blind area " roll up.In this year, along with increasingly sharpening of market competition, the quality of network quality more and more is subjected to system operator and user's attention.The network operators of China's cellular mobile communication have begun addressing its little " blind area " covering problem, and existing " blind area " soverlay technique to be original outdoor covering basically be transplanted to indoor covering, figure one is the prior art exemplary block diagram, its shortcoming is as follows:
1, with high-power direct amplification machine (2W-20W does not wait usually), the cell frequency planning with the heavy damage network is unfavorable for the optimization of (being harmful to) network.
2, domestic aerial separates with amplifier, is unfavorable for improving the signal to noise ratio of system, original base station is produced disturb inevitably.
3, antenna for mobile phone is used for indoor covering, and antenna gain is low, is unfavorable for improving the signal to noise ratio of system.
4, antenna for mobile phone or other antenna are used for indoor covering, and inconvenience is installed, and profile is not attractive in appearance, and difficult and interior decoration is coordinated.
5, antenna for mobile phone or other antenna only work in one-segment usually, are unfavorable for the upgrading of system.
The purpose of this utility model provides the indoor ceiling mount antenna that a kind of mobile communication system is used, and solves the mobile communication indoor covering problem.
The utility model is made of elements such as bilateral amplifier, power splitter, passive element array, bleeder circuits, the duplex mouth of bilateral amplifier links with power splitter, the two-port in addition of power splitter links with passive element array and " next antenna " respectively, the feeder ear and the positive source of bilateral amplifier link, simultaneously feeder ear links the earth terminal ground connection of amplifier with the two pins of bleeder circuit respectively.Wherein bilateral amplifier selects for use triode and side circuit thereof to constitute, and power splitter selects 1/2 for use, and passive element array is selected microstrip antenna for use, and bleeder circuit selects for use resistance to constitute.
The utility model volume is little, and good looking appearance can provide the gain up to 40DB, and adjustable, can improve more than the signal to noise ratio 20DB, has reduced the requirement to radio frequency cable thus.
Accompanying drawing 1 is the utility model electricity theory diagram;
Accompanying drawing 2 is the utility model local circuit electrical schematic diagram.
As shown in Figure 1, the utility model is made of elements such as bilateral amplifier, power splitter, passive element array, bleeder circuits, the duplex mouth of bilateral amplifier links with power splitter, the two-port in addition of power splitter links with passive element array (local antenna) and " next antenna " respectively, the feeder ear and the positive source of bilateral amplifier link, simultaneously (down up) links the earth terminal of bilateral amplifier (gnd) ground connection with the two pins of bleeder circuit A respectively to feeder ear.
As shown in Figure 2, be bilateral amplifier, merit is sent out device and is electrically connected schematic diagram, radiofrequency signal is input to the base stage of the triode (B1) of bilateral amplifier by circulator (V1), the collector electrode of triode (B2), bilateral amplifier is selected triode (B1 for use, B2), resistance (R1), electric capacity (C1, C2, C3), inductance (L1, L2) be formed by connecting, the feeder ear of bilateral amplifier is inductance (L1, L2) terminals, link to each other with positive source, the collector electrode of the triode of bilateral amplifier (B1) is by electric capacity (C2), circulator (V2) links to each other with power splitter (P1), the base stage of triode (B2) links to each other with power splitter (P1) by circulator (V2), the base stage of triode (B1) with after the base stage of triode (B2) is in parallel with resistance (R2), inductance (L3) ground connection again of connecting, the ground connection again of connecting with resistance (R4) after the emitter-base bandgap grading parallel connection of the emitter-base bandgap grading of triode (B1) and triode (B2), power splitter selects 1/2 for use, two ports in addition of power splitter (P1) link to each other with " next antenna " with passive element array (LC1), passive element array is selected microstrip antenna for use, and bleeder circuit selects for use resistance to constitute.
Claims (3)
1, a kind of radio frequency active antenna, it is characterized in that constituting by elements such as bilateral amplifier, power splitter, passive element array, bleeder circuits, the duplex mouth of amplifier links with power splitter, the two-port in addition of power splitter links with passive element array and " next antenna " respectively, (down's feeder ear of amplifier up) links with positive source, simultaneously feeder ear (down, up) draw with two of bleeder circuit respectively and link the earth terminal of amplifier (gnd) ground connection.
2, a kind of radio frequency active antenna according to claim 1 is characterized in that wherein bilateral amplifier selects for use triode and side circuit thereof to constitute, and power splitter selects 1/2 for use, and passive element array is selected microstrip antenna for use, and bleeder circuit selects resistance to constitute.
3, a kind of radio frequency active antenna according to claim 1, it is characterized in that radiofrequency signal passes through the base stage that circulator (V1) is input to the triode (B1) of bilateral amplifier, the collector electrode of triode (B2), bilateral amplifier is selected triode (B1 for use, B2), resistance (R1), electric capacity (C1, C2, C3), inductance (L1, L2) be formed by connecting, the feeder ear of bilateral amplifier is inductance (L1, L2) terminals, link to each other with positive source, the collector electrode of the triode of bilateral amplifier (B1) is by electric capacity (C2), circulator (V2) links to each other with power splitter (P1), the base stage of triode (B2) links to each other with power splitter (P1) by circulator (V2), the base stage of the triode of amplifier (B1) with after the base stage of triode (B2) is in parallel with resistance (R2), inductance (L3) ground connection again of connecting, the ground connection again of connecting with resistance (R4) after the emitter-base bandgap grading parallel connection of the emitter-base bandgap grading of triode (B1) and triode (B2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99240523 CN2396575Y (en) | 1999-10-15 | 1999-10-15 | Radio frequency active antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99240523 CN2396575Y (en) | 1999-10-15 | 1999-10-15 | Radio frequency active antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2396575Y true CN2396575Y (en) | 2000-09-13 |
Family
ID=34027552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99240523 Expired - Fee Related CN2396575Y (en) | 1999-10-15 | 1999-10-15 | Radio frequency active antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2396575Y (en) |
-
1999
- 1999-10-15 CN CN 99240523 patent/CN2396575Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |