CN112736420A - Resistance-loaded Klopfenstein gradient profile ultra-wideband antenna - Google Patents
Resistance-loaded Klopfenstein gradient profile ultra-wideband antenna Download PDFInfo
- Publication number
- CN112736420A CN112736420A CN202011103963.6A CN202011103963A CN112736420A CN 112736420 A CN112736420 A CN 112736420A CN 202011103963 A CN202011103963 A CN 202011103963A CN 112736420 A CN112736420 A CN 112736420A
- Authority
- CN
- China
- Prior art keywords
- antenna
- coaxial
- klopfenstein
- floor
- radiation body
- 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.)
- Pending
Links
- 230000005855 radiation Effects 0.000 claims abstract description 41
- 239000004020 conductor Substances 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000741 silica gel Substances 0.000 claims description 6
- 229910002027 silica gel Inorganic materials 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 229910001369 Brass Inorganic materials 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 239000010951 brass Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- YOBAEOGBNPPUQV-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe].[Fe] YOBAEOGBNPPUQV-UHFFFAOYSA-N 0.000 claims 1
- 230000005404 monopole Effects 0.000 description 13
- 230000005540 biological transmission Effects 0.000 description 9
- 230000008859 change Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
Abstract
The invention discloses a resistor-loaded Klopfenstein gradient profile ultra-wideband antenna, which comprises: the antenna comprises an antenna radiation body, an antenna floor, a first parallel resistor, a second parallel resistor and a coaxial feed connector; the middle upper part of the antenna radiation body is in a semicircular outline, the lower part of the antenna radiation body is in a Klopfenstein gradient line outline, two resistors are connected in parallel between the antenna radiation body and the antenna floor, one end of each resistor is welded at the joint of the circular outline and the Klopfenstein gradient line outline, and the other end of each resistor is vertically welded on the antenna floor; the coaxial feed connector penetrates through the antenna floor to be in contact with the lower part of the antenna radiation body, and energy output by the coaxial connector is fed from the feed end of the coaxial feed connector, so that surface current of the antenna radiation body is excited, and radiation is generated. The Klopfenstein gradient profile is adopted, so that the consistency of each working frequency point of the antenna is better, and the performance stability of the whole ultra-wideband system is improved.
Description
Technical Field
The invention belongs to the technical field of microwave antennas, and relates to a resistor-loaded Klopfenstein gradient profile ultra-wideband antenna, which is mainly applied to an ultra-wideband communication system.
Background
In recent years, communication systems increasingly require high-quality transmission of voice, text, image and multimedia information, so that available spectrum resources are increasingly tense, the original radio frequency spectrum becomes very crowded, and a new technology is urgently needed to open up a new place for wireless communication, and the ultra-wideband technology has the potential to solve the problem.
As part of an ultra-wideband system, the role of an ultra-wideband antenna in the system is its particularity, and its performance greatly restricts the performance of the whole system. Traditional ultra-wideband antennas, such as log-periodic antennas, Archimedes spiral antennas, equiangular spiral antennas and the like, have complex feed network design, unfixed phase center and relatively serious distortion when transmitting time-domain short pulse signals. The ultra-wideband antenna proposed in recent years is mainly based on various evolutions of biconical antennas, including bowtie antennas, teardrop antennas, tapered slot antennas, etc., and their variants, in which the disc monopole antenna proposed by w.stohr has a stable phase center in addition to a wide impedance bandwidth. Although such a circular monopole antenna provides satisfactory radiation performance over a wide impedance bandwidth, it also suffers from the following technical problems, which limit its applicability to certain specific applications.
1) Although the impedance bandwidth of the wafer monopole antenna is wide, the reflection loss fluctuation is large in the bandwidth range, the consistency of each frequency point is poor, and the stability of the whole ultra-wideband system is influenced to a certain extent;
2) the high-frequency end of the impedance bandwidth of the disc monopole antenna and the modified form thereof is above 20GHz, but the low-frequency end thereof is basically 3.1GHz, which is the low-frequency of the civil ultra-wideband communication band specified by the Federal Communications Commission (FCC), and if the low-frequency end of the antenna is further extended to the ISM (433MHz, 868MHz, 915MHz and 2.4GHz) specified by FCC, the size of the antenna is sharply increased according to the frequency proportion according to the similar principle existing in the antenna design (if all the sizes and the operating frequencies of the antenna are changed according to the same inverse proportion, the antenna characteristics are kept unchanged), thereby severely restricting and limiting the use of the antenna.
In view of the above, it is necessary to develop an ultra-wideband antenna with better full-band consistency and capable of extending low-frequency characteristics for ultra-wideband applications, and provide more ideal electromagnetic characteristics and structural characteristics than existing ultra-wideband antenna designs.
Disclosure of Invention
Objects of the invention
The purpose of the invention is: the defects of the prior art are overcome, the Klopfenstein gradient profile ultra-wideband antenna with the loaded resistor is provided, the problems that a common wafer monopole antenna and a deformation form thereof are poor in full-band reflection loss consistency, the low-frequency end of an impedance bandwidth is too high to cover an ISM frequency band and the like are solved, the antenna structure is reliable, and the effects of good full-band consistency, good low-frequency expansibility and the like are achieved.
(II) technical scheme
In order to solve the above technical problem, the present invention provides a Klopfenstein profile ultra-wideband antenna with resistance loading, which comprises: the antenna comprises an antenna radiation body 1, an antenna floor 2, a first parallel resistor, a second parallel resistor and a coaxial feed connector 5; the middle upper part of the antenna radiation body 1 is a semicircular outline 1.a, the lower part is a Klopfenstein gradient outline 1.b, a first parallel resistor 3 and a second parallel resistor 4 are connected between the antenna radiation body 1 and the antenna floor 2 in parallel, one end of the two resistors is welded at the junction of the circular outline and the Klopfenstein gradient outline, and the other end is vertically welded on the antenna floor 2; the coaxial feed connector 5 passes through the antenna floor 2 to be in contact with the lower part of the antenna radiation body 1, and the energy output by the coaxial connector is fed from the feed end of the coaxial feed connector 5, so that the surface current of the antenna radiation body 1 is excited, and radiation is generated.
The antenna radiation body 1 is integrally processed and manufactured.
Wherein, the material of the antenna radiation body 1 is brass, and the thickness is 0.5 mm.
The first parallel resistor 3 and the second parallel resistor 4 are both color circle resistors of 50 Ω.
Wherein, the antenna floor 2 is square or round.
The antenna floor 2 is made of aluminum.
The coaxial feed connector 5 comprises a coaxial outer conductor 5.a, a coaxial medium 5.b, a coaxial inner core 5.c and a coaxial flange 5.d, a through hole with the same outer diameter as that of the coaxial medium 5.b of the coaxial feed connector 5 is formed in the middle of the antenna floor 2, the coaxial medium 5.b of the coaxial feed connector 5 is inserted into the through hole, and the coaxial inner core 5.c is not short-circuited with the antenna floor 2; a gap is formed in the middle of the cylindrical coaxial inner core 5.c extending out of the through hole, when the antenna is installed, the lower portion of the antenna radiation body 1 is inserted into the gap of the coaxial inner core 5.c, the bottom end feed portion is welded, and silica gel is used for fixing.
Wherein, the middle of the coaxial inner core 5.c is provided with a gap with the width of 0.6 mm.
The antenna floor 2 is provided with 4 through holes with the diameter of 3.2mm, and the coaxial outer conductor 5.a and the coaxial flange 5.d of the coaxial feed connector 5 are connected with the circular antenna floor 2 through four standard stainless steel screws M3.
The coaxial feed connector 5 is connected with feed by adopting an SMA type coaxial connector, and the SMA coaxial feed connector is an SMA-KFD2 connector of the Xian Airlaite electronic industry Co.
(III) advantageous effects
The Klopfenstein gradient profile ultra-wideband antenna with the loaded resistance has the following beneficial effects:
1. according to the antenna, the Klopfenstein gradient profile is adopted at the lower part of the radiator, so that the consistency of each working frequency point of the antenna is better, and the performance stability of the whole ultra-wideband system is improved;
2. the antenna adopts resistance loading, so that the low-frequency bandwidth of the antenna can be expanded, and the requirements of the ISM frequency band and other low-frequency bands and the civil ultra wide band of the high-frequency band of 3.1 GHz-10.6 GHz can be met;
3. the coaxial connector inner core adopted by the antenna is provided with a gap in the middle, so that the antenna sheet radiator can be inserted, and the antenna sheet radiator are fixed by silica gel after being welded, so that the structure is stable;
4. the antenna floor of the invention has round and square shape, the size and shape can be properly adjusted according to the actual application requirements, and the whole antenna structure and the application occasion are flexible.
Drawings
Fig. 1 is a front view of the antenna of the present invention.
Fig. 2 is a top view of the antenna of the present invention.
Fig. 3 is a graph comparing the reflection loss of the antenna of the present invention with that of a conventional disk monopole antenna.
In the figure: 1. antenna radiation body 1.a. radiation body upper portion circular edge 1.b. Klopfenstein gradient profile 2. antenna floor 3. first parallel resistance 4. second parallel resistance 5. coaxial feed connector 5.a. coaxial outer conductor 5.b. coaxial medium 5.c. coaxial inner core 5.d. coaxial flange
Detailed Description
In order to make the objects, contents, and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
The basic idea of the invention is as follows: the Klopfenstein gradient profile ultra-wideband antenna with the loaded resistor is provided, the Klopfenstein gradient profile is adopted at the lower part of a radiating body, the signal reflection is caused by impedance discontinuity, the impedance conversion is better realized by designing the continuous gradient Klopfenstein gradient profile, and smaller signal reflection is obtained, so that the consistency of each working frequency point of the antenna is better, and the performance stability of the whole ultra-wideband system is improved; the high-frequency end of the impedance bandwidth of the disc monopole antenna is above 20GHz, but the low-frequency end of the impedance bandwidth of the disc monopole antenna is basically 3.1GHz at the low-frequency point of a civil ultra-wideband communication frequency band specified by FCC of the Federal communications Commission, if the working low-end frequency of the antenna is further extended to the low-frequency bands such as ISM (industrial scientific medical standards institute) specified by FCC, the size of the antenna is sharply increased according to the frequency proportion, two color ring resistors of 50 ohms are connected in parallel between an antenna radiator and an antenna floor, the bandwidth can be expanded from the low-frequency end, and the.
Referring to fig. 1 and 2, the Klopfenstein gradient profile ultra-wideband antenna of the invention is a resistance loaded Klopfenstein ultra-wideband antenna, which is composed of an antenna radiation body 1, a floor 2, parallel resistors 3 and 4 and a coaxial feed connector 5 inserted into an antenna structure. The middle upper part of the antenna radiation body 1 is a semicircular outline 1.a, the lower part of the antenna radiation body 1 is a Klopfenstein gradient line outline 1.b, the antenna radiation body 1 is integrally processed into a metal whole, the selected material is brass, and the thickness is 0.5 mm; the antenna floor can be square or round according to actual needs, the round floor is selected in the embodiment, and aluminum is selected as the material for reducing the weight of the antenna; a through hole with the same outer diameter as the coaxial medium 5.b of the coaxial feed connector 5 is arranged in the middle of the circular antenna floor 2, so that the coaxial medium 5.b of the coaxial feed connector 5 is inserted into the floor and the coaxial inner core 5.c is not short-circuited with the floor; two 50-omega color ring resistors are connected between the antenna radiation body 1 and the antenna floor 2 in parallel, one ends of the two resistors are welded at the joint of the circular outline and the Klopfenstein gradient line outline, and the other ends of the two resistors are vertically welded on the antenna floor 2; the coaxial feed connector 5 adopts an SMA type coaxial connector for connecting feed, the SMA coaxial feed connector is a product sold in the market, the connector adopts SMA-KFD2 of the Xian Aili special electronic industry Co., Ltd, and the connector consists of a coaxial outer conductor 5.a, a coaxial medium 5.b, a coaxial inner core 5.c and a coaxial flange 5.d, and is characterized in that a gap with the width of 0.6mm is formed in the middle of the extended cylindrical inner core 5. c; when the antenna is installed, the lower part of the antenna radiation body 1 is inserted into a coaxial inner core 5.c gap structure, the feed part at the bottom end is welded, and then the antenna radiation body is fixed by silica gel to enhance the mechanical strength; the round antenna floor 2 is provided with 4 through holes with the diameter of 3.2mm, the coaxial outer conductor 5.a and the coaxial flange 5.d of the SMA coaxial feed connector 5 are connected with the round antenna floor 2 through four standard stainless steel screws M3, and the energy output by the coaxial connector is fed from the feed end, so that the surface current of the antenna radiator is excited, and radiation is generated.
In the invention, the metal antenna radiation body 1 is the most main component playing a role of radiation and is used for radiating electromagnetic waves to space, when a signal is transmitted, the SMA coaxial feed connector 5 inputs the transmission signal of an external transmitter through a connected coaxial cable, and the energy output by the coaxial connector excites the surface current on the metal antenna radiation body 1 so as to generate radiation; because the Klopfenstein gradient profile 1.b is adopted at the lower part of the metal antenna radiation body 1, impedance conversion is better realized, the consistency of each working frequency point of the antenna is better, and the performance stability of the whole ultra-wideband system is improved; because the antenna is connected with two 50 omega color ring resistors in parallel between the antenna radiation body 1 and the antenna floor 2, the antenna can expand the low-frequency bandwidth and simultaneously meet the requirements of the ISM frequency band (433MHz, 868MHz, 915MHz and 2.4GHz) and other low-frequency bands and the civil ultra-wideband of the high-frequency band of 3.1 GHz-10.6 GHz; because the antenna adopts the SMA coaxial connector 5 with a gap in the middle of the inner core, the antenna radiator 1 is fixed by silica gel after being welded, and the structure is stable; in addition, the shape of the antenna floor 2 can be round and square, the size can be properly adjusted according to the actual application requirements, and the whole antenna structure and the application occasion are flexible.
Fig. 3 is a graph comparing the reflection loss of the antenna of the present invention with that of a conventional disk monopole antenna. The reflection loss is an important performance parameter of the antenna, reflects the impedance characteristic of the antenna to be tested and also determines the impedance bandwidth of the antenna. Referring to fig. 3, the reflection loss of the conventional disc monopole antenna is less than-10 dB in the ultra-wide frequency range of 3-30 GHz, and the reflection loss fluctuates greatly in a frequency band, and the reflection loss of the conventional disc monopole antenna is less than-10 dB in the frequency range of 0.3-30 GHz, and is stable in the frequency band. The antenna provided by the invention expands the low-frequency characteristics of the common disc monopole antenna, so that the antenna can simultaneously meet the requirements of low-frequency bands such as ISM (433MHz, 868MHz, 915MHz and 2.4GHz) and high-frequency band of 3.1 GHz-10.6 GHz for civil ultra wide band, the reflection loss in the frequency band is relatively stable, the bandwidth of the antenna is effectively expanded, and the stability of the whole ultra wide band system is improved.
The key points of the principle involved in the above technical solution include the following aspects: impedance matching for wideband antennas
Characteristic impedance Z of transmission line0Is the ratio of the voltage and current of the signal propagating along the transmission line. Impedance Z of antennaAIs at the antenna terminalThe ratio of the voltage and current at the terminals. Because the phases of the voltage and current are different, they are generally complex. The connection of the antenna to the feed line is preferably such that the input impedance of the antenna is purely resistive and equal to the characteristic impedance of the feed line, i.e. ZA＝Z0. If Z isAIs not equal to Z0There will be a mismatch and a part of the input signal will be reflected back to the signal source, the reflection coefficient Γ being defined as the reflected wave voltage
And incident wave input voltage
Ratio of the currents or reflected wave current
With incident wave input current
The opposite of the ratio is shown in the following formula:
it is more practical to describe the operating conditions on the transmission line using the voltage standing wave ratio. On a uniform lossless transmission line, the ratio of the maximum amplitude value of the voltage to the minimum amplitude value of the voltage is called as voltage standing wave ratio, which is denoted as rho, namely:
the relationship between the voltage standing wave ratio ρ and the reflection coefficient Γ is:
in addition to the reflection coefficient and voltage standing wave ratio, the reflection loss | S11I is also a common index for determining whether the impedance matching is good, and the relationship between it and the reflection coefficient Γ is:
|S11|＝20lg|Γ| (4)
the input impedance of the antenna depends on many factors such as the shape and size of the antenna itself, and even the environment in which the antenna is used. For a narrow-band antenna, the impedance characteristic of the antenna can be not considered in the design, and the impedance bandwidth can be improved as long as a good matching network is designed between the radio frequency front end and the antenna. However, it is difficult to design a matching network for an ultra-wideband antenna over a large frequency band.
Antenna impedance control
There are two main impedance control methods for achieving the desired antenna impedance. The first method is an impedance loading technique; the second method is the control of the antenna geometry, i.e. designing the antenna with good impedance characteristics. From the rf front-end to the feed and antenna radiating elements belonging to the antenna part and to the free space (or medium surrounding the antenna), the antenna system must have the capability of continuous impedance transformation. Such an impedance transformation technique is reasonably simple, but is a difficult problem in the actual design process.
Klopfenstein is the optimum gradual change line
The essence of designing an antenna using the taper theory is to make the geometry of the antenna a function related to the distance of the feedback point, so as to satisfy the desired impedance characteristics and realize good matching of the feed transmission line and the free space. Typical antennas designed in this way are today exponential or logarithmic ridged horn antennas and exponentially graduated Vivaldi antennas. Although these antennas have broadband characteristics, they have some disadvantages, such as the antenna size is too large, and thus, it is attempted to design an antenna with better performance by using other gradually-changing lines.
The Klopfenstein tapering is derived from a step-type chebyshev converter with infinite increase in the number of nodes, and the main conclusions for the Klopfenstein tapering are given below.
The natural logarithm of the Klopfenstein taper characteristic impedance is:
in the formula0-the reflection coefficient at zero frequency, given by:
in addition, the function Φ (x, a) is defined as:
wherein, J1(x) Is a modified bessel function. The function Φ (x, a) has a specific value Φ (0, a) of 0,
and
in other cases, the function Φ (x, a) must be numerically calculated.
The resulting reflection coefficient is:
if beta L<A, then formula
Term becomes formula
In the discussion above, the passband is defined as β L ≧ A, so the maximum ripple in the passband is
I.e. in beta L>When A is in the range of +/-gamma (theta) |0Oscillating between/coshA.
Theoretically, there are countless possible ways in which an impedance matching ramp can be implemented, among which the "optimal" design needs to be chosen, and Klopfenstein ramping is the optimal design. For a given fade length (greater than a certain threshold), the reflectance given by Klopfenstein fading is minimal throughout the passband; conversely, if the maximum reflectance value is defined within the pass band, the Klopfenstein taper gives the shortest matching section. Based on the idea that Klopfenstein gradual change is the optimal gradual change line, the Klopfenstein gradual change monopole antenna is designed.
Resistance loaded antenna
A loaded antenna is a wide band antenna which, by inserting a resistive or reactive element in the antenna at a suitable location, aims to improve the current distribution in the antenna to be as close as possible to a travelling wave state, thereby widening the operating band. The unloaded dipole antenna or other TEM transmission line type antenna can be regarded as a section of transmission line with an open terminal, the current along the line is in standing wave distribution, the impedance of the input end of the antenna can be changed violently along with the change of the electrical length of the antenna, and the loaded broadband antenna can ensure that the input impedance of the antenna does not change greatly along with the change of the frequency as long as the loading position is proper and the loading element is proper and the current in the line or part of the line of the antenna is kept close to the progressive wave state in a quite wide frequency range, thereby obtaining good broadband characteristics.
According to the technical scheme, the Klopfenstein gradient structure is adopted at the feed end of the antenna, so that the consistency of all frequency points of the antenna is better, and the performance stability of an ultra-wideband system is improved; the left edge and the right edge of the antenna are loaded by adopting resistors, the bandwidth is expanded from the low end of the frequency, and the actual application requirements of ISM (industrial scientific medical) equal frequency bands are met; the antenna is used for transmitting and receiving vertical polarization electromagnetic waves, has a simple structure, the antenna radiator and the floor are only composed of metal brass and aluminum, two resistors are connected in parallel between the radiator and the floor, and the whole antenna is easy to process and manufacture and has low cost; the antenna is easy to match and can be directly fed by a coaxial line of 50 omega; this antenna stable in structure adopts the coaxial connector of gap is opened to the inner core, adopts silica gel fixed, stable in structure after the welding antenna radiator.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1.A resistor-loaded Klopfenstein tapered profile ultra-wideband antenna, comprising: the antenna comprises an antenna radiation body (1), an antenna floor (2), a first parallel resistor, a second parallel resistor and a coaxial feed connector (5); the middle upper part of the antenna radiation body (1) is a semicircular outline (1.a), the lower part of the antenna radiation body is a Klopfenstein gradient line outline (1.b), a first parallel resistor (3) and a second parallel resistor (4) are connected between the antenna radiation body (1) and an antenna floor (2) in parallel, one end of each of the two resistors is welded at the joint of the circular outline and the Klopfenstein gradient line outline, and the other end of each resistor is vertically welded on the antenna floor (2); the coaxial feed connector (5) penetrates through the antenna floor (2) to be in contact with the lower part of the antenna radiation body (1), and energy output by the coaxial connector is fed from the feed end of the coaxial feed connector (5) so as to excite the surface current of the antenna radiation body (1) and generate radiation.
2. The Klopfenstein tapered line profile ultra-wideband antenna with resistance loading according to claim 1, characterized in that the antenna radiating body (1) is integrally processed and manufactured.
3. The Klopfenstein tapered line profile ultra-wideband antenna with resistance loading as claimed in claim 2, characterized in that the antenna radiating body (1) material is brass with a thickness of 0.5 mm.
4. The Klopfenstein tapered line profile ultra-wideband antenna of claim 1, wherein the first (3) and second (4) parallel resistors are each a 50 Ω color loop resistor.
5. The Klopfenstein tapered-line profile ultra-wideband antenna for resistive loading according to claim 1, characterized in that the antenna floor (2) is square or circular.
6. The Klopfenstein tapered line profile ultra-wideband antenna with resistance loading as claimed in claim 5, characterized in that the material selected for the antenna floor (2) is aluminum.
7. The resistance-loaded Klopfenstein tapered line profile ultra-wideband antenna according to claim 5, characterized in that the coaxial feed connector (5) comprises a coaxial outer conductor (5.a), a coaxial medium (5.b), a coaxial inner core (5.c) and a coaxial flange (5.d), a through hole with the same outer diameter as the coaxial medium (5.b) of the coaxial feed connector (5) is opened in the middle of the antenna floor (2), the coaxial medium (5.b) of the coaxial feed connector (5) is inserted into the through hole, and the coaxial inner core (5.c) is not short-circuited with the antenna floor (2); a gap is formed in the middle of the cylindrical coaxial inner core (5.c) extending out of the through hole, when the antenna is installed, the lower portion of the antenna radiation body (1) is inserted into the gap of the coaxial inner core (5.c), the bottom end feed portion is welded, and silica gel is used for fixing.
8. The Klopfenstein tapered line profile ultra-wideband antenna as claimed in claim 7, characterized in that a slot with a width of 0.6mm is opened in the middle of the coaxial inner core (5. c).
9. The Klopfenstein tapered line profile ultra-wideband antenna for resistive loading according to claim 8, characterized in that the antenna floor (2) is provided with 4 through holes of 3.2mm phi, and the coaxial outer conductor (5.a) and coaxial flange (5.d) of the coaxial feed connector (5) are connected to the circular antenna floor (2) by four standard stainless steel screws M3.
10. The Klopfenstein tapered line profile ultra-wideband antenna for resistive loading according to claim 8, characterized in that the coaxial feed connector (5) is connected to the feed by using an SMA type coaxial connector, and the SMA coaxial feed connector is an SMA-KFD2 connector of sienna elytte electronics industries ltd.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011103963.6A CN112736420A (en) | 2020-10-15 | 2020-10-15 | Resistance-loaded Klopfenstein gradient profile ultra-wideband antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011103963.6A CN112736420A (en) | 2020-10-15 | 2020-10-15 | Resistance-loaded Klopfenstein gradient profile ultra-wideband antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112736420A true CN112736420A (en) | 2021-04-30 |
Family
ID=75597261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011103963.6A Pending CN112736420A (en) | 2020-10-15 | 2020-10-15 | Resistance-loaded Klopfenstein gradient profile ultra-wideband antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112736420A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113809532A (en) * | 2021-09-17 | 2021-12-17 | 中国人民解放军63660部队 | Resistance-loaded antipodal Vivaldi antenna for radiating ultra-wide spectrum electromagnetic pulse |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5815119A (en) * | 1996-08-08 | 1998-09-29 | E-Systems, Inc. | Integrated stacked patch antenna polarizer circularly polarized integrated stacked dual-band patch antenna |
| CN104882676A (en) * | 2015-05-04 | 2015-09-02 | 南京信息工程大学 | Low-frequency ultra-wideband planar omnidirectional antenna |
| CN106299666A (en) * | 2016-09-26 | 2017-01-04 | 河南师范大学 | A kind of resistor loaded super wide band plane semiellipse antenna |
| CN107221745A (en) * | 2017-05-03 | 2017-09-29 | 西安电子科技大学 | A kind of airborne ultra-short wave broadband blade antenna |
| CN108232414A (en) * | 2017-11-22 | 2018-06-29 | 天津津航计算技术研究所 | A kind of civilian ultra-wideband antenna of Klopfenstein gradual change line profiles with wave edge |
| CN108565535A (en) * | 2017-11-22 | 2018-09-21 | 天津津航计算技术研究所 | A kind of low windage abnormity monopole ultra-wide band antenna with high frequency trap characteristic |
| CN110783699A (en) * | 2019-11-13 | 2020-02-11 | 天津津航计算技术研究所 | Double-quadrangular-frustum-shaped medium-loaded triangular-gradient miniaturized broadband antenna |
-
2020
- 2020-10-15 CN CN202011103963.6A patent/CN112736420A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5815119A (en) * | 1996-08-08 | 1998-09-29 | E-Systems, Inc. | Integrated stacked patch antenna polarizer circularly polarized integrated stacked dual-band patch antenna |
| CN104882676A (en) * | 2015-05-04 | 2015-09-02 | 南京信息工程大学 | Low-frequency ultra-wideband planar omnidirectional antenna |
| CN106299666A (en) * | 2016-09-26 | 2017-01-04 | 河南师范大学 | A kind of resistor loaded super wide band plane semiellipse antenna |
| CN107221745A (en) * | 2017-05-03 | 2017-09-29 | 西安电子科技大学 | A kind of airborne ultra-short wave broadband blade antenna |
| CN108232414A (en) * | 2017-11-22 | 2018-06-29 | 天津津航计算技术研究所 | A kind of civilian ultra-wideband antenna of Klopfenstein gradual change line profiles with wave edge |
| CN108565535A (en) * | 2017-11-22 | 2018-09-21 | 天津津航计算技术研究所 | A kind of low windage abnormity monopole ultra-wide band antenna with high frequency trap characteristic |
| CN110783699A (en) * | 2019-11-13 | 2020-02-11 | 天津津航计算技术研究所 | Double-quadrangular-frustum-shaped medium-loaded triangular-gradient miniaturized broadband antenna |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113809532A (en) * | 2021-09-17 | 2021-12-17 | 中国人民解放军63660部队 | Resistance-loaded antipodal Vivaldi antenna for radiating ultra-wide spectrum electromagnetic pulse |
| CN113809532B (en) * | 2021-09-17 | 2022-09-30 | 中国人民解放军63660部队 | Resistance-loaded antipodal Vivaldi antenna for radiating ultra-wide spectrum electromagnetic pulse |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2027628B1 (en) | An ultra wideband antenna | |
| US5973653A (en) | Inline coaxial balun-fed ultrawideband cornu flared horn antenna | |
| KR101281329B1 (en) | Ultra-wideband antenna with excellent design flexibility | |
| Kumar et al. | On the design of nano-arm fractal antenna for UWB wireless applications | |
| US20070216595A1 (en) | Dielectric-Loaded Antenna | |
| Jahromi et al. | Application of fractal binary tree slot to design and construct a dual band-notch CPW-ground-fed ultra-wide band antenna | |
| US7876280B2 (en) | Frequency control of electrical length for bicone antennas | |
| CN112736420A (en) | Resistance-loaded Klopfenstein gradient profile ultra-wideband antenna | |
| US6870514B2 (en) | Compact monopole antenna with improved bandwidth | |
| Mazloum et al. | Bandwidth enhancement of small slot antenna with a variable band-stop function | |
| Kumar et al. | Design of coplanar waveguide-feed pentagonal-cut ultra-wide bandwidth fractal antenna and its backscattering | |
| Harima et al. | Evaluation of a TEM horn antenna for radiated immunity tests in close proximity | |
| US7538737B2 (en) | High impedance bicone antenna | |
| Amjadi et al. | A novel 2-18GHz TEM double-ridged horn antenna for wideband applications | |
| CN114824782A (en) | Microstrip antenna and microstrip antenna array | |
| Yadav et al. | Novel Broadband High Gain Antenna Designed by Suspended Cylinder and Shorting PIN | |
| Kumar | On the design of circular fractal antenna with U-shape slot in CPW-feed | |
| Sanyal et al. | Quasi-self-complementary ultra-wideband antenna with band rejection characteristics | |
| Mahmood et al. | CPW-fed UWB antenna with band-notch by hexagonal shape slot | |
| Wang et al. | A Helix-loaded Equiangular Spiral Antenna with Compact Structure | |
| RU2507648C2 (en) | Hybrid slit antenna | |
| Malherbe | Design of ultra wideband TEM horns | |
| Song et al. | An ultra-wide band exponential flared TEM horn antenna for impulse radar systems | |
| CN213093357U (en) | Zero-profile directional antenna | |
| Xiong et al. | A band-rejection Vivaldi antenna with high selectivity using hybrid HRW/CCLL |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210430 |
|
| RJ01 | Rejection of invention patent application after publication |