CN2272616Y

CN2272616Y - Double triangle shape wide frequency band high-sensitive antenna

Info

Publication number: CN2272616Y
Application number: CN 96213538
Authority: CN
Inventors: 张振斌
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-06-13
Filing date: 1996-06-13
Publication date: 1998-01-14
Anticipated expiration: 2006-06-13

Abstract

The utility model relates to a double triangle shape wide frequency band high-sensitive antenna. An original stretchable and rotatable inserting rod of the antenna is provided with a left group of opposite vertex isosceles triangle and a right group of opposite vertex isosceles triangle which are used as antenna elements of a receiving main body. Compared with a conventional antenna structure, the utility model has wider frequency band characteristic and higher sensibility. The utility model is suitable for watching of remote areas. Besides, the utility model has simple structure and low cost.

Description

Two dihedral wide frequency band high sensitivity antennas

The utility model belongs to the corollary apparatus of household electrical appliance, specially refers to the indoor and outdoor reception antenna that is used with television set.

The antenna that is used for television set, existing multiple shape, structure are being sold on the market, traditional telescopic antenna, loop aerial, simple structure, easy to make, but view reception effect is relatively poor.Gain higherly though multiple unit is guided antenna into, frequency characteristic is relatively poor again, and especially in most small and medium-sized cities and remote countryside, mountain area, reception is just poorer.In uhf band and the low section of VHF, all can't receive satisfied signal.For this reason, study the better antenna of a kind of reception and become generally needing of the vast rural area and the common people.

The purpose of this utility model is exactly the frequency band for the original antenna of broadening, improves receiving sensitivity, develops a kind of row simple in structure, easy and the good two corner antenna of view reception effect.

The utility model relies on following technical proposals to realize.The antenna steady arm top that can stretch at one, compress, also can rotate around the axle center, the cleat insulator [2] of fixed antenna oscillator is housed, it is characterized in that, as the antenna oscillator that receives main body, be that two groups of active feed oscillators [1] to the top isosceles triangle made from conductor constitute about being clamped by set bolt [3], the angle and the spacing of two groups of vertical angles of isosceles triangle are controlled in the fixed range.Two nodes are connected to 75/300 conversion plug by 300 ribbon feeders [4], insert the TV set aerial jack.By the adjusting of pull bar length and direction, can receive satisfied TV signal.Isosceles triangle is made by Metallic rod, silk, pipe, and drift angle is controlled in 60 ° of-75 ° of scopes, and waist length can be 20 centimeters to 50 centimeters scopes.According to the difference that receives the place, can select different length for use.

In order to increase the intensity of antenna oscillator, can in the isosceles triangle framework, add different brace rods, not only increased a day line strength, help the increase of the equivalent diameter of Metallic rod again, help to improve reception frequency range and sensitivity.This structure is more suitable in outdoor application.At the about 20-30cm of distance main element place, can plus signal reflector [6], to improve the design's antenna gain.

Further specify embodiment below in conjunction with accompanying drawing

Description of drawings

Fig. 1-a is used for the two corner antenna of indoor simple type

Fig. 1-b, Fig. 1-c, Fig. 1-d are the various two angles antennas that add brace rod that are used for indoor and outdoor

Fig. 2-a, Fig. 2-b are the traditional type structural antenna

Main body oscillator [1] is that wire, bar or pipe material are made among the figure, and the available bakelite plate of cleat insulator [2], poly (methyl methacrylate) plate, plastic plate are made.Set bolt [3] clamps the oscillator main body, and ribbon feeder [4] is access in the television set, and steady arm [5] can stretch and rotate.Reflector [6] can be fixed near main element.

Press the made antenna of this programme, guide antenna and V section 1-12 channel into basic half-wave section oscillator Unit two, three, four respectively and shake more and compare in antenna, effect is obviously superior.Compare experiment with the broadband UHF-antenna of the maturation shown in Fig. 2-a, with under the ground co-altitude, channel quantity and the definition of utilizing two corner antenna to receive are all superior than the antenna of the gain 8-10 decibel shown in Fig. 2-a at the same time.As seen the gain of this pair corner antenna should be greater than 10 decibels.

Another time contrast experiment compares with the existing eight unit multi-loop antennas shown in Fig. 2-b.This antenna view reception effect is better than the multi-loop antenna that frequency range is the 640-780 megahertz under the same terms, and it has the frequency bandwidth characteristics more widened and the sensitivity of Geng Gao than the antenna structure of routine, is fit to the rating of remote districts, and simple in structure, makes the material-saving saving of labor.This easy pair of corner antenna of made all obviously is better than the antenna with amplifier when receiving the U segment signal, cost is but obviously cheap.

Claims

1. two dihedral wide frequency band high sensitivity antenna, the antenna steady arm top that can stretch at one, compress, also can rotate around the axle center, the cleat insulator [2] of fixed antenna oscillator is housed, it is characterized in that, as the antenna oscillator that receives main body, be that two groups of active feed oscillators [1] to the top isosceles triangle made from conductor constitute about being clamped by set bolt [3], the angle and the spacing of two groups of vertical angles of isosceles triangle are controlled in the fixed range, and two nodes are connected to 75/300 Ω conversion plug by 300 Ω ribbon feeders [4].

2. according to the described antenna of claim 1, it is characterized in that said isosceles triangle antenna oscillator is made by wire, bar, also can be made by the metal tube material.

3. according to the described antenna of claim 1, it is characterized in that said isosceles triangle antenna oscillator, triangle drift angle are controlled at 60 ° of-75 ° of scopes, the waist length of side can be in 20-50 centimetre scope.

4. according to the described antenna of claim 1, it is characterized in that said isosceles triangle antenna oscillator can add brace rod in the triangular framing.

5. according to the described antenna of claim 1, its spy just is, said isosceles triangle antenna oscillator can be used signal reflectors adding apart from its 20-30 centimetre place.