CN2298607Y

CN2298607Y - Multidirection active TV. receiving antenna

Info

Publication number: CN2298607Y
Application number: CN 97213326
Authority: CN
Inventors: 周锡明
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-04-21
Filing date: 1997-04-21
Publication date: 1998-11-25
Anticipated expiration: 2007-04-21

Abstract

The utility model relates to a multi-direction active TV receiving antenna. A supporting rod is provided with two vibrator arrays which receive signals in the frequency-range UHF and are composed of frame vibrators and ring vibrators, a vibrator array which receives signals in the frequency-range VH and is composed of frame vibrators and ring vibrators, and a vibrator array which receives signals in the frequency-range VL and is composed of folding vibrators. A mixing amplifier with good isolation, less noise and high gain is fixed to the lower part of the supporting rod. As a result, the utility model has the advantages of multiple receiving-directions, high sensitivity, multiple receiving-channels, less interference, light weight, strong ability of wind resistance, convenient installation, a long service life, etc.

Description

Multidirectional active tv reception antenna

The utility model is a kind of receiving system of TV signal, and the radiovision reception antenna that especially a kind of receive direction is many belongs to the wireless aerial field.

Along with improving constantly of living standards of the people, the owning amount of television set just significantly increases, particularly in area that vast rural area and house disperse, because wired transmission of TV signal is difficult to popularize for the moment, and the reception of wireless television signal is poor, therefore, the market demand of outdoor television receiving antenna is still very big, but take a broad view of the various antennas that occur on the market, although we find that structure is different, it is low that their ubiquities sensitivity, high directivity and often need to adjust direction, receiving channels is few, defectives such as Installation and Debugging difficulty.Therefore, the these antenna on the market can not satisfy users to watching the needs of a plurality of high quality television channel programs.

The purpose of this utility model is in order to overcome the deficiency of above-mentioned existence, and a kind of have good multi-direction TV signal receptivity, high-gain, high receiving sensitivity and multidirectional active tv reception antenna that can the widening frequency band width are provided.

The purpose of this utility model is finished by following technical solution, it mainly is made up of pole, oscillator frame, oscillator battle array, mixer amplifier etc., be equiped with the pick-up dipole battle array that receives UHF, VH, three frequency ranges of VL respectively by the oscillator frame on pole, wherein the pick-up dipole battle array of uhf band is to be combined by combo box ring (or the single frame ring) oscillator of two groups of independent stationary on pole.

Described VH frequency range pick-up dipole battle array is made up of one group of combo box ring (or single frame ring) oscillator, it is installed on two groups of poles between the uhf band pick-up dipole by the oscillator frame, and is equiped with the folded dipole (or half-wave dipole) of a group of received VL frequency range in the bottom of pole.

The utility model is arranged in the pick-up dipole battle array of three frequency ranges on the vertical plane, and receive combo box ring (or single frame ring) the oscillator battle array of VH frequency range, its frame ring is inserted in combo box ring (or single frame ring) the oscillator battle array of one group of uhf band at least, and this can guarantee the volume-diminished of entire antenna.

For combo box ring (or single frame ring) the oscillator battle array of avoiding two groups of uhf bands exerts an influence when the received television signal, the utility model is connected with matching transformer B at the signal input part of above-mentioned two groups of uhf band pick-up dipoles, this matching transformer B is that serial connection forms again with exhausted green lead two-wire and around two groups on high ferrite bead.

Described matching transformer B directly is connected to and is attached in the nethermost mixer amplifier of pole on the uhf band blender, also is provided with the blender of VH and VL frequency range in this mixer amplifier.

Mixer amplifier described in the utility model includes and is attempted by the uhf band secondary behind the second amplifying circuit of uhf band signal and VL, the VH two frequency range blenders and amplifies the single-stage amplifying circuit that constitutes on the intermediate contact.

Description of drawings is as follows:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is mixer amplifier circuit theory diagrams of the present utility model.

To do further introduction to the utility model by accompanying drawing below: the utility model is mainly by pole 1 as shown in Figure 1, oscillator frame 2, compositions such as signal pick-up dipole battle array 3 and mixer amplifier 4, the top of pole 1 is equiped with two groups of identical signal pick-up

dipole battle arrays

31,32 that are used to receive uhf band of being made up of combo box ring oscillator respectively with oscillator frame 21 and oscillator frame 22, and is equiped with one group of oscillator battle array 33 that is used to receive the VH frequency band signals of being made up of combo box ring oscillator with oscillator frame 23 on the pole 1 of position between oscillator frame 21 and the oscillator frame 22.Be equiped with the oscillator battle array 34 of the folded dipole composition of a group of received VLF frequency band signals in addition below by oscillator frame 24 at above-mentioned oscillator frame.Below pole 1, be fixedly connected with mixer amplifier 4.Present embodiment is placed in each oscillator battle array in the vertical plane, and the

oscillator battle array

31,32 that the two frame rings up and down that receive the oscillator battle array 33 of VH frequency band signals are inserted in two group of received uhf band signals respectively, help reducing antenna volume like this, make structure compact more.The also available single frame ring of combo box ring oscillator described in the utility model oscillator replaces, and at this moment, oscillator battle array 33 has only a frame ring and can only be inserted in one group that receives uhf band signal oscillator battle array.Combo box ring oscillator described here can replace also having comprised

oscillator battle array

31,32 with single frame ring oscillator.The same then available half-wave dipole of folded dipole that receives the VL frequency band signals replaces, thereby forms oscillator battle array 34.Above-described each oscillator battle array 3 is all used electrical conductivity height, lightweight little pipe, connects the centre wavelength of required reception frequency range, choose suitable length and be made, and respectively by impedance transformer, 75 Ω coaxial cables is connected in the mixer amplifier 4.

The utility model adopts mutual isolation good, and the noise coefficient is little, and the high mixer amplifier 4 that gains is so that can make the oscillator battle array 3 of four group of received signals can independently receive the TV signal of institute's corresponding frequency band.The uhf band of connection oscillator battle array is arranged respectively in mixer amplifier 4, VH frequency range oscillator battle array and VL frequency range are shaken in three groups of blenders of battle array, and secondary amplification and VH, VL that the amplifying circuit of mixer amplifier 4 includes the uhf band signal are attempted by the single-stage amplification that constitutes on the uhf band secondary amplification intermediate contact respectively.Here second amplifying circuit is mainly by the microwave tube BG of low noise, high-gain ₁And BG ₂Constitute, and single-stage is amplified mainly by BG ₂Realize that the mixer amplifier 4 of above-mentioned composition can have the gain amplifier more than the 20dB in the all-channel scope.The utility model has the mutual isolation more than the 10dB in order to guarantee two groups of uhf band pick-up

dipole battle arrays

31,32, two groups of oscillator battle arrays can independently be received and be independent of each other, be connected to the grand depressor B of coupling before the uhf band blender, the formation of this matching transformer B is at height with exhausted green lead

Ferrite bead (having more than 1 hole) is gone up two-wire and around two windings, again two windings are connected in series, make their numbers of turn identical, direction is opposite, two connects the signal input part of oscillator battle array, serial connection termination uhf band blender, when the high-frequency current of two groups of UHF

oscillator battle array

31,32 TV signal that received passes through matching transformer B, the signal electromotive force direction that produces is opposite, making signal carry out secondary behind the uhf band blender amplifies, thereby the signal that two groups of UHF oscillator battle arrays are received is not harassed mutually, has good isolation degree and more receive direction.The utility model when actual installation, with 75 Ω cables with mixer amplifier with place indoor power distribution box and television set to be connected.

The utility model compared with prior art, have receive direction more, highly sensitive, Receiving channels is many, mutual isolation good, disturb less, in light weight, wind loading rating strong, install The characteristics such as convenience, long service life, it can satisfy the user and watch multichannel, fine definition joint Purpose needs.

Claims

1, a kind of multi-direction active tv reception antenna, it mainly is made up of pole, oscillator frame, oscillator battle array, mixer amplifier, be equiped with the pick-up dipole battle array of accepting UHF, VH, three frequency ranges of VL respectively by the oscillator frame on pole, the pick-up dipole battle array (3) that it is characterized in that described uhf band is to be combined by two groups of combo box ring oscillators (or single frame ring oscillator) (31,32) that are fixed on independently on the pole (1).

2, multi-direction active tv reception antenna as claimed in claim 1, it is characterized in that being equiped with on the pole (1) between described two groups of uhf band pick-up dipole battle arrays (31,32) the combo box ring oscillator battle array (or single frame ring oscillator) (33) of a group of received VH frequency range, the folded dipole (or half-wave dipole) that is equiped with a group of received VL frequency range below above-mentioned oscillator battle array 3 on the pole (1) constitutes pick-up dipole battle array (34).

3, multi-direction active tv reception antenna as claimed in claim 2, combo box ring (or single frame ring) the oscillator battle array (33) that it is characterized in that described VH frequency range, its frame ring is inserted in the pick-up dipole battle array 3 of one group of uhf band at least, and all oscillator battle arrays 3 are positioned at same vertical plane.

4, as claim 1 or 2 or 3 described multi-direction active tv reception antennas, the signal input part that it is characterized in that described two groups of uhf band pick-up dipoles is connected with matching transformer B, this mates grand depressor B is with exhausted green lead two-wire and around two windings on high ferrite bead, and serial connection forms.

5, multi-direction active tv reception antenna as claimed in claim 4, it is characterized in that described matching transformer B is connected to is fixed in the nethermost mixer amplifier of pole (1) (4) on the uhf band blender, also is provided with VH and VL frequency range blender in this mixer amplifier (4).

6, multi-direction active tv reception antenna as claimed in claim 5 is characterized in that described mixer amplifier (4) also includes to be connected to the uhf band secondary respectively behind the second amplifying circuit of uhf band signal and VL, the VH two frequency range blenders and to amplify the single-stage amplifying circuit that constitutes on the intermediate contact.