CN1112316A - Small relay for communication - Google Patents
Small relay for communication Download PDFInfo
- Publication number
- CN1112316A CN1112316A CN 94105611 CN94105611A CN1112316A CN 1112316 A CN1112316 A CN 1112316A CN 94105611 CN94105611 CN 94105611 CN 94105611 A CN94105611 A CN 94105611A CN 1112316 A CN1112316 A CN 1112316A
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- antenna
- input
- indoor
- output
- communication
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Abstract
The miniature relay for communication is especially suitable for enclosed building or the place where receiving condition is poor. Out-door radio signals are amplified by several stages of fixed-gain filter amplifiers and then sent to indoor different areas via in-door antenna. An in-door radio emitter composed of several stages of fixed-gain filter amplifiers and power amplifier containing APC transmites the signal to out-door antenna.
Description
The present invention relates to a kind of small-sized communication repeater, constitute receiving loop for a kind of with several grades of fixed gain filter amplifiers, the power amplifier that contains automatic power control circuitry with several grades of fixed gain amplifiers and constitutes launching circuit, and this receiving loop and launching circuit connect independently domestic aerial respectively, and its outer end one coupling device is connected with an exterior aerial, constitute a kind of small-sized communication repeater that is applicable to that containment building uses, to solve the problem of indoor difficult reception and transmitting radio signal.
Press wireless communication apparatus now, as all kinds of telephone communication devices such as mobile phone, calling sets, really can make people all can carry out telephonic communication wherein, grasp and the trade aspect, when can be described as quite desirable necessity equipment for whereabouts, its practicality is not sayed and can be instructed, so be promptly can't carry out normal communication in the containment building or in the basement or other occasions that are difficult for wireless signal is entered, so because of stopping of building, promptly cause the communication dead angle, as giving improved necessity.
Main purpose of the present invention is: a kind of small-sized communication repeater is provided, be and a kind ofly outdoor radio signals can be transferred to indoor each position and the indoor wireless electric signal can be passed to outdoor communication receiving/transmission relay, with solve in the building can't normal communication shortcoming.
The invention provides a kind of small-sized communication repeater, comprising:
One exterior aerial;
One antenna coupler, for being connected on exterior aerial or the domestic aerial, it more has one to receive output and emission input;
One receiving loop, its input is connected with the reception output of antenna coupler, and inside is connected in series formation mutually with several grades of fixed gain filter amplifiers;
One indoor transmission antenna is connected with the output of this receiving loop;
One indoor reception antenna;
One launching circuit, its input is connected with indoor reception antenna, and the inner power amplifier of having automatic power control circuit with several grades of fixed gain filter amplifier serial connections one combines, and its output is connected in the emission input of antenna coupler;
Become one to be applicable to the inside and outside radioed small-sized communication repeater of building with above-mentioned tectonic association with what two groups of domestic aerials transmitted and received signal respectively.
Aforesaid small-sized communication repeater is characterized in that: this automatic power control circuit is for being main composition with transistor, diode and integrating circuit.
Further specify bright architectural feature of this splendid achnatherum and purpose below in conjunction with accompanying drawing.
Brief Description Of Drawings:
Fig. 1 is a calcspar of the present invention.
Fig. 2 is a detailed circuit diagram of the present invention.
As shown in Figure 1, the present invention is applicable to that the communication repeater that building uses promptly is connected with the input of a receiving loop 20 and the output of a launching circuit 50 by two branch roads respectively through an antenna coupler 60 with an exterior aerial 10 that is installed in building appearance, and the output of this receiving loop 20 and launching circuit 50 and input are connected with an indoor transmission antenna 30 and an indoor reception antenna 40 respectively, and make the radio wave that exterior aerial 10 receives can be after antenna coupler 60 is sent into receiving loop 20 and amplified, transfer to indoor location by the indoor transmission antenna 30 that is positioned at the drawing left side again, reach outdoor radio signals are passed to indoor effect, and the indoor radio transmission electric wave that produces, then receive via aforementioned independently indoor transmission antenna 40, after launching circuit 50 carries out preposition and power amplification, deliver to exterior aerial 10 through antenna coupler 60 again, with by exterior aerial 10 transmitting radio signals to air, to transfer to indoor emission signal outdoor, use and constitute a kind of building and use, and it carries out the communication repeater that signal transmits and receives with domestic aerial independently.
About the internal structure of the receiving loop 20 of aforementioned communication repeater inside be with level Four fixed gain filter amplifier 21 mutually serial connection constitute, the common overall gain of forming is about 80 decibels signal amplification, launching circuit 50 then is connected with power amplifier 53 compositions of automatic power control circuitry 54 with twin-stage fixed gain filter amplifier 51 and, to carry out preposition amplification and back level amplification respectively.
And the detailed circuit of previous constructions promptly as shown in Figure 2, the drawing top promptly promptly connects filter 211 and two-staged transistor 212 with input with the identical fixed gain filter amplifier 21 of four set constructors, 213 amplifiers constitute the gain of every step voltage at least at 20 decibels filter amplifier, and the output that is positioned at afterbody fixed gain filter amplifier 21 promptly is connected with indoor transmission antenna 30 through a filter 22 again, the receiving loop of forming with these level Four fixed gain filter amplifiers 21 20 promptly is respectively arranged with the filtering structure because of its each inter-stage, the noise of reduction and anti-jamming capacity are arranged especially, and front end and each transistorized collector electrode at fixed gain filter amplifiers 21 at different levels are high-pass filtering circuit with inductor (L) all, for providing each inter-stage good high-frequency resistance coupling, answer the true tool practicality of sequitur this case thus.
In addition with launching circuit 50 aspects below Fig. 2, also be provided with two-stage fixed gain filter amplifier 51 to carry out overall gain at least 40 decibels voltage amplification to be similar to previous constructions, then input to again and carry out power amplification in the power amplifier 53, then connect one with transistor 541 between these power amplifier 53 inputs and control input end (A), the automatic power control circuit 54(APC that diode 542 and integrating capacitor 543 constitute), these automatic power control circuits 54 are mainly can be under no input signal state, can use and limit this power amplifier 53 and be the no-output state, to avoid not having the meaningless power loss of generation under the signal state, to reach power saving and to reduce interference problem, these power amplifier 53 outputs are then sent into antenna coupler 60 and are launched radio signals through exterior aerial 10 through a filter 52 again, and this antenna coupler 60 also can suitably make this launching circuit 50 and receiving loop 10, with the mutual interference of further reduction phase.
Claims (2)
1, a kind of small-sized communication repeater is characterized in that, comprising:
One exterior aerial;
One antenna coupler, for being connected on exterior aerial or the domestic aerial, it also has one to receive output and emission input;
One receiving loop, its input is connected with the reception output of antenna coupler, and inside is connected in series formation mutually with several grades of fixed gain filter amplifiers;
One indoor transmission antenna is connected with the output of this receiving loop;
One indoor reception antenna;
One launching circuit, its input is connected with indoor reception antenna, and the inner power amplifier of having automatic power control circuit with several grades of fixed gain filter amplifier serial connections one combines, and its output is connected in the emission input of antenna coupler.
2, small-sized communication repeater according to claim 1 is characterized in that: this automatic power control circuit is for being main composition with transistor, diode and integrating circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94105611 CN1112316A (en) | 1994-05-19 | 1994-05-19 | Small relay for communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94105611 CN1112316A (en) | 1994-05-19 | 1994-05-19 | Small relay for communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1112316A true CN1112316A (en) | 1995-11-22 |
Family
ID=5032110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94105611 Pending CN1112316A (en) | 1994-05-19 | 1994-05-19 | Small relay for communication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1112316A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100440750C (en) * | 2001-11-20 | 2008-12-03 | 高通股份有限公司 | Reverse link power controlled repeater |
| CN100484312C (en) * | 2003-01-22 | 2009-04-29 | 香港应用科技研究院有限公司 | Wireless local area network time division duplex relay system with high speed automatic up-link and down-link detection |
| CN103890672A (en) * | 2011-10-14 | 2014-06-25 | 松下电器产业株式会社 | Data relay system, relay reader apparatus, relay tag apparatus, relay apparatus, and data relay method |
-
1994
- 1994-05-19 CN CN 94105611 patent/CN1112316A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100440750C (en) * | 2001-11-20 | 2008-12-03 | 高通股份有限公司 | Reverse link power controlled repeater |
| CN100484312C (en) * | 2003-01-22 | 2009-04-29 | 香港应用科技研究院有限公司 | Wireless local area network time division duplex relay system with high speed automatic up-link and down-link detection |
| CN103890672A (en) * | 2011-10-14 | 2014-06-25 | 松下电器产业株式会社 | Data relay system, relay reader apparatus, relay tag apparatus, relay apparatus, and data relay method |
| CN103890672B (en) * | 2011-10-14 | 2016-08-17 | 松下电器产业株式会社 | Data relay system, relaying reader, relaying labeling apparatus, trunking and data relay method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |