CN2043009U - Uhf/vhf all channel tv receiving antenna - Google Patents
Uhf/vhf all channel tv receiving antenna Download PDFInfo
- Publication number
- CN2043009U CN2043009U CN 88209563 CN88209563U CN2043009U CN 2043009 U CN2043009 U CN 2043009U CN 88209563 CN88209563 CN 88209563 CN 88209563 U CN88209563 U CN 88209563U CN 2043009 U CN2043009 U CN 2043009U
- Authority
- CN
- China
- Prior art keywords
- oscillator
- length
- oscillator arms
- pipe
- metal tube
- 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 - Lifetime
Links
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The utility model discloses a UHF/VHF all channel television receiving antenna, which uses few couples of V-shaped vibrators to compose log-periodic antennas. The perfect receiving gains of 6 to 56 television channels are achieved. A little prolonging the energizing feeding tube of the log-periodic antennas and arranging a couple of V-shaped vibrators which are adapted for receiving television signals of 1 to 5 frequency channels, the entire aerial structure is compact, the cost is lowered, and the perfect receptivity of all the 1 to 56 frequency channels is achieved. The utility model directly feeds the power with a coaxial cable, needn't be provided with an impedance converter, and is very favorable to receive the television of the UHF frequency range.
Description
The utility model is a kind of broadband reception antenna, and a kind of UHF/VHF full channel tv receiving antenna that comprises 1 to 56 television channel of more specifically saying so belongs to technical field of radio.
Up to now, also lack a kind of simple in structurely, can be implemented in the antenna that better receptivity is all arranged on 1 to 56 whole television channels.But, growing along with China's radio and television services, television channel program is set up at uhf band one after another in various places, vast TV user wishes can provide on the market a kind of very much can receive original VHF band tv program well, can receive the UHF/VHF full channel tv receiving antenna of the uhf band television program of newly establishing and may setting up in the future again well.
In order to satisfy the urgent and long-range needs of vast TV user, the utility model aims to provide a kind ofly can all have excellent reception performance and compact conformation, UHF/VHF full channel tv receiving antenna easy to install on 1 to 56 whole television channels.
Abroad (for example Japan) adopts two slave antennas, a secondary VHF band TV signal that receives, another secondary uhf band television signal that receives, by the U/V blender with whole TV signal input television sets.Its advantage is when VHF and UHF TV signal during from the direction of two angles that differ greatly, and can adjust the sensing of two slave antennas respectively, makes every slave antenna aim at separately arrival bearing; Its shortcoming is the expense height, and antenna system is complicated, and institute takes up space bigger.
(number of patent application: 86203099) employing is carried out reasonable combination with the directional antenna that two pairs work in UHF and VHF respectively to a kind of UHF/VHF compatible type TV directional receiving antenna of being applied for a patent by Shanghai Science and Technology Univ., become the antenna of a unified feed, realize on the same antenna, covering 1～30 channel of two frequency ranges of UHF/VHF, made it to obtain comparatively ideal receiving gain.But this antenna:
1, topped 1～30 channel is not topped 1 to 56 whole television channels.
2, the input impedance of two active dipoles is 300 Ω types.If do feeder line with 75 Ω coaxial cables, wide band impedance transformer must be set, this can bring supplementary load loss.If do feeder line with 300 Ω flat TV feeders, serious and antenna effect is arranged in the uhf band feeder loss, very unfavorable to reception.
3, at 1～3 channel, the standing-wave ratio of antenna is bigger, and receptivity is relatively poor.
4, the antenna length overall is 1.5 meters, and size is bigger.
The utility model adopts with its diverse method for designing can overcome above deficiency.The technical scheme that adopts is the antenna that design is made up of (n 〉=6) V-arrangement oscillator parallel to each other n, the V-arrangement oscillator is installed on two parallel metal tubes symmetrically, (n-1) that wherein be contained in the front designs by the logarithm period fate short V-arrangement oscillator, it carries out work at 6 to 12 channels with the pattern of half-wavelength, has comparatively ideal receiving gain, it mainly carries out work by the pattern of 1.5 wavelength to 13～56 channels, has higher gain, and it is longer to the V-arrangement oscillator length to be contained in rearmost n, and the TV signal that is used to receive 1 to 5 channel has good performance.With 75 Ω coaxial cables by after pass wherein metal tube forward, outer conductor at front end mouth of pipe place with coaxial cable is connected with this metal tube, the inner wire of coaxial cable is connected with another root metal tube, need not use impedance transformer, reaching in 1 to 56 channel scope has good impedance matching effect.
Figure 1 shows that embodiment of the present utility model.Here get n=7, promptly by seven pairs of V-arrangement oscillators parallel to each other ((1) and (1 '), (2) and (2 ') ..., (7) and (7 ')) form.Two parallel metal pipes (8) and (8 ') are both as support, again as twin lead.The oscillator arms (1), (2), (3), (4), (5), (6), (7) that are installed on the pipe (8) are positioned at same horizontal plane with pipe (8), with oscillator arms (1 '), (2 '), (3 '), (4 '), (5 '), (6 '), (7 ') equal in length of being installed on (8 '), installation situation is identical respectively.Wherein odd number oscillator arms (1), (3), (5), (7) are positioned at a side of pipe (8), and even number oscillator arms (2), (4), (6) are positioned at the opposite side of pipe (8).The length l of oscillator arms (1), (2), (3), (4), (5), (6)
1, l
2, l
3, l
4, l
5, l
6Determined by following relation: the length of establishing adjacent vibration generators is than being τ, i.e. τ=l
M/ l
M+1(M=1,2,3,4,5) here, τ gets 0.88～0.90 and is advisable, as long as determine l
1～l
6In any, other five length just can be calculated modern l by the τ value
6Should get 45～50cm.
The length l of oscillator arms (7)
7Get 95～135cm, for taking into account 1 to 5 five channel, preferred values is 115cm.The installation site of oscillator arms on pipe (8) determined by following relation: use d
MRepresenting length is l
MWith length be l
M+1The installing space of the two adjacent oscillator arms of (M=1,2,3,4,5) on pipe (8) established σ=d
M/ 4l
M+1, σ gets 0.05～0.07 and is advisable, so d
1, d
2, d
3, d
4, d
5Value can determine.Between oscillator arms (7) and (6) apart from d
6Get and equal or be slightly larger than d
5, the length of metal tube (8) has only about 70cm.The situation that is installed in oscillator arms (1 ')～(7 ') on the metal tube (8 ') is with last identical.The angle of all oscillator arms and pipe (8) or pipe (8 ') is Ψ, a certain value among desirable 45 °～60 ° of the Ψ.
But metal materials such as each oscillator arms aluminium, copper are considered to select for use aluminum pipe better from factors such as weight, and the aluminum pipe diameter selects Φ 8～Φ 10 to be advisable.Two metal tubes (8) are shaped as garden shape with (8 ') available cross-section, square or rectangular aluminum pipe or copper pipe, and the size of pore should guarantee that oscillator arms is installed in Guan Shanghou still can allow coaxial cable by passing in the pipe.After the sectional dimension of pipe (8) with (8 ') determined, the distance between two pipes can determine that its characteristic impedance value should be got about 100～150 Ω according to the characteristic impedance value of the twin-lead type feeder of being made up of them.
Insulation board (9), (10) respectively have two, fuse with screw and pipe (8) and (8 ') in pipe (8) and (8 ') both sides.Plastic plate (11), (12) are played reinforcement effect to several to longer oscillator.Each oscillator arms generally adopts screw with being connected of pipe (8) or (8 '), also available electric welding welding.Coaxial cable (13) is penetrated in the pipe by the rear end of pipe (8) or (8 '), and the front end that reaches pipe carries out feed.Utilize fixed head (14) that antenna is fixed on the rod of being provided for oneself by the user.The available insulating material of fixed head (14) is made, also available metal plate, but if use metallic plate, then can only be connected on the metal tube ((8 ') or (8)), definitely can not make between two metal tubes and cause electric short circuit.
The utility model has been realized, size littler, feed foolproof antenna cover UHF/VHF 1 to 56 whole television channels simple with an auxiliary structure, makes it can obtain distributing on all television channels rationally and more satisfactory receiving gain. In the zone of 20～60 kilometers of TV stations, use the utility model to improve and watches effect, and expense is lower, set up and use and more convenient, for being a convenience from the user of TV station away from.
Claims (2)
1, a kind of UHF/VHF full channel tv receiving antenna.By n the V-arrangement oscillator is formed with these oscillators of installation and to two parallel metal pipes of these oscillator feeds.It is characterized in that:
N gets more than or equal to 6,
Be installed in oscillator arms (1) on the metal tube (8), (2) ... (n) be positioned at same horizontal plane with pipe (8), respectively be installed in oscillator arms (1 ') on the metal tube (8 '), (2 ') ... (n ') equal in length, installation situation is identical.Wherein odd number oscillator arms (1), (3) ... be positioned at a side of pipe (8), even number oscillator arms (2), (4) ... be positioned at the opposite side of pipe (8),
(n-1) that be contained in the front forms logarithm periodic antenna to the short V-arrangement oscillator of length, and it carries out work at 6 to 12 channels with the pattern of half-wavelength, mainly presses the pattern work of 1.5 wavelength at 13 to 56 channels.Its characteristic parameter is: the length of adjacent vibration generators arm is than τ=L
M/ L
M+1, (M=1,2 ..., (n-2)), τ gets 0.86～0.92; Oscillator arms (1), (2) ... (n-1) the mounting distance factor sigma may=d on metal tube (8)
M/ 4L
M+1, σ gets 0.05～0.07, here d
MRepresenting length is L
MWith length be L
M+1(M=1,2 ..., (n-2)) the mounting distance of two adjacent oscillator arms on metal tube (8); The angle Ψ of each oscillator arms and metal tube (8) or (8 '), Ψ get 45 °～60 °, oscillator arms (1), (2) ... (n-1) length l
1, l
2... l
N-1, as long as determine one of them, other just can be calculated by the τ value, modern l
N-1Get 45～50cm, be contained in last n to the V-arrangement oscillator, the length l of its oscillator arms
nGet 95～135cm, preferred values is 115cm.
2, the full channel tv receiving antenna of UHF/VHF according to claim 1 is characterized in that: penetrate in the pipe with the rear end of 75 Ω coaxial cables by metal tube (8) or (8 '), the front end that reaches pipe directly carries out feed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88209563 CN2043009U (en) | 1988-08-16 | 1988-08-16 | Uhf/vhf all channel tv receiving antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88209563 CN2043009U (en) | 1988-08-16 | 1988-08-16 | Uhf/vhf all channel tv receiving antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2043009U true CN2043009U (en) | 1989-08-16 |
Family
ID=4843186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88209563 Expired - Lifetime CN2043009U (en) | 1988-08-16 | 1988-08-16 | Uhf/vhf all channel tv receiving antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2043009U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103515707B (en) * | 2013-09-29 | 2016-01-20 | 深圳市顶一精密五金有限公司 | A kind of rotation system of H-face array shortwave logarithm three-dimensional array antenna |
-
1988
- 1988-08-16 CN CN 88209563 patent/CN2043009U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103515707B (en) * | 2013-09-29 | 2016-01-20 | 深圳市顶一精密五金有限公司 | A kind of rotation system of H-face array shortwave logarithm three-dimensional array antenna |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5933123A (en) | Combined satellite and terrestrial antenna | |
| GB2076226A (en) | Antenna | |
| CN102104189A (en) | High-gain omnidirectional circularly-polarized antenna | |
| CN2043009U (en) | Uhf/vhf all channel tv receiving antenna | |
| CN208209000U (en) | A kind of full angle adjusting digital TV antenna | |
| US20070285328A1 (en) | Slot Antenna for Television Reception | |
| CN2204070Y (en) | Aerial for TV | |
| CN201336368Y (en) | Quadrupole plate antenna for UHF digital television set | |
| CN201038306Y (en) | Digital television high-gain antenna | |
| CN2232625Y (en) | Multi-direction all-channel TV receiving antenna | |
| CN210074149U (en) | Omnidirectional radio frequency transmitting device for data transmission equipment | |
| CN218896932U (en) | Lightning protection device for medium-wave hard feed pipe connector and connector thereof | |
| CN86205322U (en) | Combined all frequency channel tv aerial | |
| CN220324693U (en) | Broadband medium short wave receiving antenna | |
| CN2090585U (en) | Improved fish-bone type antenna | |
| CN217691634U (en) | Double-parasitic double-coupling antenna | |
| CN2135841Y (en) | All-channel tv antenna | |
| CN2329089Y (en) | Omniderictional full wave band antenna | |
| CN87203947U (en) | Wall-hanging type television antenna | |
| CN2166528Y (en) | V-U outdoor common antenna for household television | |
| CN212848795U (en) | WLAN antenna with double-antenna structure | |
| CN2132292Y (en) | Antennaverter for tv | |
| CN210778988U (en) | Double-frequency transmitting device for countering vehicle-mounted shield of unmanned aerial vehicle | |
| CN2246335Y (en) | Omnidirectional full frequency channel television antenna | |
| CN2252416Y (en) | High-gain all-channel TV receiving antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C32 | Full or partial invalidation of patent right | ||
| IP01 | Partial invalidation of patent right |
Decision date of declaring invalidation: 19911109 Decision number of declaring invalidation: 180 |
|
| RN01 | Renewal of patent term | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |