CN2301022Y - All-channel multi-function television signal receiver - Google Patents
All-channel multi-function television signal receiver Download PDFInfo
- Publication number
- CN2301022Y CN2301022Y CN97236774U CN97236774U CN2301022Y CN 2301022 Y CN2301022 Y CN 2301022Y CN 97236774 U CN97236774 U CN 97236774U CN 97236774 U CN97236774 U CN 97236774U CN 2301022 Y CN2301022 Y CN 2301022Y
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- CN
- China
- Prior art keywords
- amplifier
- signal
- cable
- dipole
- channel
- 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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- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Details Of Television Systems (AREA)
Abstract
The utility model relates to the improvement of an all-channel TV receiving antenna, comprising a channel U receiving vibrator, a channel V receiving vibrator, a mixer, a two-stage amplifier, a power supply, a shell, etc. A converting switch is arranged between the two amplifiers, and a matcher, a converter, etc. are additionally arranged between the two amplifiers. With simple structure and small volume, the utility model can be conveniently converted between the cable-TV signals and the radio-TV signals and can be used simultaneously by multiple TV sets.
Description
The utility model relates to a kind of improvement of full channel tv receiving antenna, specifically belongs to a kind of and can receive wireless television signal, can be used to receive the radiovisor of cable TV signal again.
Traditional full channel tv receiving antenna is made up of UHF, VHF pick-up dipole, director dipole, reflection oscillator and blender, amplifier etc., and not only volume is huger, and can not use simultaneously with cable TV.The cable TV subscriber must disconnect television signal input interface and line telecommunications transmission line earlier as receiving wireless television signal, connects television receiving antenna again, so use cumbersome.
The purpose of this utility model provides and a kind ofly not only can receive wireless television signal effectively, can be used to receive cable TV signal again, and can improve TV image and sound accompaniment, TV signal receiver simple in structure, easy to use.
The utility model comprise U frequency range pick-up dipole 1, V-band pick-up dipole 1 ', blender 2, amplifier 3, amplifier 4 and power supply 5, housing 9, its principal character is to be provided with change over switch 8 between amplifier 3 and the amplifier 4, change over switch 8 can link to each other with the output of adaptation 6, and the input of adaptation 6 connects cable TV signal input socket 10.The output of amplifier 4 can be set up distributor 7.The utility model further is characterized as U frequency range pick-up dipole 1 and is arranged in the housing 9, power-line plug 5 ', change over switch 8, cable TV input socket 10, and distributor output interface 7 ' all be arranged on the housing 9.
Owing to be provided with change over switch between two amplifiers of the present utility model, when change over switch turned to the ANT state, wireless television signal was through blender and amplifier input television set.When change over switch turned to the CATV state, cable TV signal was through adaptation, amplifier input television set, and two kinds of TV signal switchings are very convenient, so the utility model can receive wireless television signal effectively, can be used to receive cable TV signal simultaneously again.Because amplifier out of the present utility model has additional distributor,, use simultaneously again for multiple TV set so can connect multiple TV set simultaneously.The utility model volume is little, and is simple in structure, is particularly suitable for cable TV family and uses.
Accompanying drawing 1 is the utility model embodiment side master map.
Accompanying drawing 2 is the utility model rearview
Accompanying drawing 3 constitutes schematic diagram for the utility model circuit.
Accompanying drawing 4 is the utility model embodiment electrical schematic diagram.
Among the figure: 1-U frequency range pick-up dipole, 1 '-V-band pick-up dipole, 2-blender, 3,4-amplifier, 5-power supply, 5 '-attaching plug, 6-adaptation, 7-distributor, 7 '-distributor output interface, 8-change over switch, 9-housing, 10-cable TV signal input socket.
Further describe the utility model below in conjunction with drawings and Examples.
Accompanying drawing 1: housing 9 can be placed on television set or the desktop reposefully by plastic production, and U frequency range pick-up dipole 1 is arranged on housing 9 inner chambers (not drawing among the figure), two V-band pick-up dipoles 1 ' and be rod-pulling type, be symmetrically placed in the housing left and right sides.Power line socket 5 ', change over switch 8, distributor output interface 7 ', cable TV signal input socket 10 all is arranged on the housing, to connect power supply and TV signal easily.
Accompanying drawing 2,3: when needs receive wireless television signal, change over switch 8 turns to the ANT state, V-band pick-up dipole 1 ' and signal that U frequency range pick-up dipole receives respectively through blender 2,3 (Fig. 3: B1, B2 ' converts uneven 75 Ω signals to, again respectively by C1-C3, L1-L3 and C4-C5, the filter that L4 forms is exported to amplifier 3 after mixing, amplifier 3 is formed (referring to Fig. 3) by V1 etc., this amplifier is the fixed partial pressure biasing, total radio amplifier, collect between a base stage and seal in C7, R4, the negative feedback network that L5 forms, to improve amplification performance, TV signal is conveyed into amplifier 4 through change over switch 8, carries out twice amplification.Amplifier 4 is formed this circuit by things such as V2 and is adopted the fixed partial pressure biasing, cascode amplifies form, collect the negative feedback network that seals in R9, L7, C13 composition between a base, collector load is made up of R10, L8, R11, wherein L8, R11 are in order to the compensation high frequency performance, and the signal after amplifier 4 amplifies can be imported television set after being coupled.When needs received cable TV signal, change over switch 8 turned to the CATV state, and cable TV signal by the adaptation 6 that C10, C11, L6 form, is defeated by television set by the amplifier 4 that V2 forms through 10 inputs of cable TV signal input socket again.As want multiple TV set to watch simultaneously, and then can set up branch adaptation 7, if distributor is two distributors, plug X2 directly inserts first television set, second television set uses socket X3.
Claims (3)
1. all-channel multi-functional TV signal receiving device, comprise U frequency range pick-up dipole 1, V-band pick-up dipole 1 ', blender 2, amplifier 3, amplifier 4, power supply 5 and housing 9, it is characterized by between amplifier 3 and the amplifier 4 and be provided with change over switch 8, change over switch 8 can link to each other with the output of adaptation 6, and the input of adaptation 6 connects cable TV signal input socket 10.
2. by the described a kind of all-channel multi-functional TV signal receiving device of claim 1, the output that it is characterized by amplifier 4 is connected with distributor 7.
3. by the said a kind of all-channel multi-functional TV signal receiving device of claim 1, it is characterized by that U channel pick-up dipole 1 is arranged in the housing 9, power-line plug 5 ', change over switch 8, distributor output interface 7 ', cable TV signal input socket 10 all is arranged on the housing 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97236774U CN2301022Y (en) | 1997-08-08 | 1997-08-08 | All-channel multi-function television signal receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97236774U CN2301022Y (en) | 1997-08-08 | 1997-08-08 | All-channel multi-function television signal receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2301022Y true CN2301022Y (en) | 1998-12-16 |
Family
ID=33947563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97236774U Expired - Fee Related CN2301022Y (en) | 1997-08-08 | 1997-08-08 | All-channel multi-function television signal receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2301022Y (en) |
-
1997
- 1997-08-08 CN CN97236774U patent/CN2301022Y/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 |