WO2016176717A1 - Improved dielectric rod antenna - Google Patents
Improved dielectric rod antenna Download PDFInfo
- Publication number
- WO2016176717A1 WO2016176717A1 PCT/AU2016/000155 AU2016000155W WO2016176717A1 WO 2016176717 A1 WO2016176717 A1 WO 2016176717A1 AU 2016000155 W AU2016000155 W AU 2016000155W WO 2016176717 A1 WO2016176717 A1 WO 2016176717A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- dielectric rod
- corrugations
- dielectric
- antenna assembly
- section
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/02—Coupling devices of the waveguide type with invariable factor of coupling
- H01P5/022—Transitions between lines of the same kind and shape, but with different dimensions
- H01P5/024—Transitions between lines of the same kind and shape, but with different dimensions between hollow waveguides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/02—Waveguide horns
- H01Q13/0208—Corrugated horns
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/24—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave constituted by a dielectric or ferromagnetic rod or pipe
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/06—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens
- H01Q19/08—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens for modifying the radiation pattern of a radiating horn in which it is located
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
- H01Q5/55—Feeding or matching arrangements for broad-band or multi-band operation for horn or waveguide antennas
Definitions
- the present invention relates to high frequency wide bandwidth antennas which may be used in applications such as satellite ground stations.
- Satellite ground stations commonly use geometrically shaped reflectors to increase their received and transmitted microwave power and reflectors operate well in multiple bands without modification.
- the reflectors must be fed at their focal points with a low gain "feed” antenna, and it is difficult to make these antennas sufficiently broad band in frequency to accommodate multiple bands simultaneously. This is especially the case if the antennas must operate with switchable circular polarisation or be able to sense antenna pointing errors (e.g. be monopulse) since such requirements rule out the use of a log-periodic design. Alternatively, if a wideband horn were to be used then it would require numerous sampling probes to obtain the monopulse information which would cause scattering at the out-of-band frequencies.
- dielectric rod causes less disruption to the operation of the outer, low band antenna, particularly as the rod can be gradually tapered in diameter to reduce the refiections of the outer antenna waves. Nevertheless, dielectric rods are not ideal antennas for satellite antenna feeds since their sidelobes can foe high and their E and H plane symmetry poor, leading to axial ratio degradation.
- a dielectric rod antenna assembly including a metallic waveguide and a dielectric rod radiator supported therein, wherein a plurality of corrugations are disposed between the waveguide and the dieiectric rod radiator for sidelobe reduction.
- the corrugations are formed in the metallic waveguide though they may be formed in the dielectric rod radiator.
- corrugations are formed in the dielectric rod radiator they may be coated with metal using vacuum deposition. Alternatively, they may instead be coated with metal adhered thereto with conductive adhesives.
- the dielectric rod radiator is circular in cross section.
- the dielectric rod radiator has tapered ends to reduce reflections in transitioning to air wave propagation and from air-f illed waveguide.
- a portion of constant cross section for example a cylindrical section, is located between the tapered ends.
- the corrugations are disposed along the portion of constant cross section.
- the corrugations are graded in depth according to a linear variation from 0.5 to 0.25 of a wavelength in the dielectric.
- corrugations are formed on the dielectric rod they may be coated with metaf using a metallic housing with complementary machined corrugations and allowing the dielectric to be introduced by means of temporarily splitting the housing or moulding the dielectric in-situ.
- Figure 1 depicts a dielectric rod radiator with corrugated transition according to an embodtment of the present invention.
- Figure 2 depicts a dielectric rod radiator with plain waveguide transition as is known in the prior art.
- Figure 3 is a graph providing a comparison of modelled radiation patterns for the dielectric rod of Figure 1 with and without the corrugated transition region.
- Figure 4 is a graph showing the ratio of the E and H plane field levels shown in dB and compared for the plain waveguide fed rod antenna of Figure 2 and the corrugated transition fed rod antenna of Figure 1.
- Figure 5 is a graph showing the return loss for the plain waveguide and for a corrugated transition fed dielectric rod antenna according to an embodiment of the present invention, at 20 GHz.
- Figure 6 is a partially sectioned diagram of a dual band feed embodiment of the invention, with the dielectric rod part shown un-sectioned.
- Figure 7 is a fully sectioned diagram of the dual feed of Figure 6.
- Figure 8 Is a cross sectional view of a second embodiment of a dual band feed according to the present invention.
- Figure 9 is a close up and partially exploded view of a transition between the waveguide and dielectric rod radiator of the dual band feed of Figure 8 showing corrugations formed into the waveguide.
- the corrugated transition dielectric rod antenna 1 in accordance with this embodiment of the invention shows lower side to be levels and greater E (electric) and H (magnetic) plane symmetry.
- the E and H plane symmetry is more clearly shown for the main lobe in Figure 4.
- the corrugated transition rod antenna 1 has a maximum E and H plane field strength difference of 0,4dB in the main lobe, whereas for the plain waveguide fed dielectric rod 3 the difference is 1.4dB.
- the reflection coefficients of the two dielectric rod antennas 1 and 3 are shown In Figure 5. It will be noted that the corrugated transition dielectric rod antenna 1 has 3dB lower reflection amplitude,
- a dielectnc rod antenna in accordance with a first embodiment of the present invention has a metallized, corrugated transition section between the adjacent metallic waveguide section (or “housing") and the air-surrounded dielectric rod radiator section. It is believed that these corrugations operate by gradually transforming the TE modes of the waveguide section to a hybrid HE mode prior to the dielectric rod alone. By eliminating the dependence of the electromagnetic modes upon axial direction currents in the metallized surrounding, the corrugations reduce the scale of the changes which occur at the end of the metallization, thus causing less radiation at this point and also causing less reflections, which assists bandwidth.
- the dielectric rod is preferably circular in cross section as shown in Figure 1 , however other cross sections are also possible.
- FIG. 6 An embodiment of the invention for a dual band monopulse antenna feed is shown in Figure 6 and Figure 7.
- Figure 6 there is shown a partially sectioned diagram of a dual band feed 10 according to an embodiment of the invention, with the dielectric rod radiator 12 shown un-sectioned.
- the various parts are: waveguide for low band 14; dielectric rod radiating region16; dielectric rod corrugated section 18; dielectric rod waveguide adaptor taper 20; and high band waveguide 22-The corrugated section 18 of the dielectric rod is metallized and electrically bonded, to the metallic housing 13 using RF gasket or conductive adhesive.
- the means of introduetng the low band electromagnetic waves into the larger waveguide is omitted for clarity, as it is incidental to the operation of the invention.
- One means is the use of tuned probes as will be known to those skilled in the art.
- the dielectric rod 12 preferably has tapered ends 16, 20 to reduce reflections in transitioning to air wave propagation and from air-filled waveguide.
- the corrugations of the corrugated section 18 are preferably coated with metal using vacuum deposition or conductive adhesives.
- the corrugations are preferably supported inside a machined or formed metallic enclosure in the form of the housing 13, with the voids being bridged across with EM gasket material or conductive adhesive.
- the corrugations are preferably graded in depth using a suitable function.
- One possible simple example is a linear variation from 0.5 to 0.25 of a wavelength in the dielectric.
- the corrugations may be made by using a metallic housing with complementary machined corrugations and allowing the dielectric to be introduced by means of temporarily splitting the housing or moulding the dielectric in-situ.
- FIG. 8 there is shown a side cross-sectional view of a preferred embodiment of the invention comprising a dual band antenna assembly 25.
- corrugations 24 have been machined into the circular metal housing 26 supporting the dielectric rod 12a.
- a close-up and partially exploded view of the transition region (indicated by dashed line 29) between the housing 24 and the dielectric rod radiator 12a is provided in Figure 9.
- the dielectric rod 12a comprises central cylindrical portion 27 located between opposed tapered ends 16a, 20a. Unlike the first embodiment, no corrugations are formed in the cylindrical portion 27 of rod 12a. Machining the corrugations 24 into the metal wall 26 or into the dielectric rod 12 (as shown in the first embodiment of Figures 6 and 7) is a matter of mechanical convenience. As previously mentioned, it is believed that either arrangement will give essentially identical eiectromagnetic results provided due allowance is made for dimensional changes associated with the dielectric constant in the corrugations, and the loss of any dielectric, and in the metal surfaces of the corrugations. It will be realised from the above that in at least one embodiment of the invention there is provided a dielectric rod antenna assembly including a dielectric rod .
- the antenna assembly includes a metallic waveguide section and an air surrounded dielectric rod radiator wherein corrugations comprising a corrugated transition section are provided in a transition region between the metallic waveguide section (which section is sometimes called “the housing” herein) and the air-surrounded dielectric rod radiator section.
- the corrugations are preferably formed in the transition region between the dielectric rod and the metallic waveguide section.
- the corrugations may be formed either in the dielectric rod or in the metallic housing.
- the presence of the corrugations has been found to reduce sidelobes of E-H (electro-magnetic) radiation transmitted by the assembly in use.
- An antenna assembly according to an embodiment of the present invention has reduced sidelobe levels and improved bandwidth and E-H plane symmetry thereby reducing wastage of microwave energy to sidelobes, susceptibility to interference and improving the polarisation purity of the transmitted and received signals.
Abstract
A dielectric rod antenna assembly includes a metallic waveguide section and an air surrounded dielectric rod radiator section with corrugations formed between the metallic waveguide section and the air-surrounded dielectric rod radiator section. The corrugations are preferably formed in an transition portion between the dielectric, rod and the metallic waveguide section. The corrugations may be formed either in the dielectric rod or in the metallic waveguide. The presence of the corrugations has been found to reduce sidelobes of E-H (electro-magnetic) radiation transmitted by the assembly in use. The antenna assembly reduces the sidelobe levels and improves bandwidth and E-H plane symmetry of dielectric rod antennas thereby reducing wastage of microwave energy to sidelobes, susceptibility to interference and improving the polarisation purity of the transmitted and received signals.
Description
IMPROVED DIELECTRIC ROD ANTENNA
Technical Field
The present invention relates to high frequency wide bandwidth antennas which may be used in applications such as satellite ground stations.
Background to the Invention
As new communication satellites are launched, it has become common for multiple frequency bands of microwave communication to be transmitted and received by the satellite. Multiple frequency bands provide increased communication capacity for microwave links that use the satellite as well as providing redundancy in case local weather conditions or other factors impair the communication performance of one or more bands. It is preferable for satellite ground stations to communicate on multiple bands using the same antenna since this requires less space and potentially, less expense. This is especially the case for mobile satellite ground stations where a single, small and iightweight antenna which may be accommodated on a ship, aircraft or wheeled vehicle, would be desirable. Satellite ground stations commonly use geometrically shaped reflectors to increase their received and transmitted microwave power and reflectors operate well in multiple bands without modification. However the reflectors must be fed at their focal points with a low gain "feed" antenna, and it is difficult to make these antennas sufficiently broad band in frequency to accommodate multiple bands simultaneously. This is especially the case if the antennas must operate with switchable circular polarisation or be able to sense antenna pointing errors (e.g. be monopulse) since such requirements rule out the use of a log-periodic design. Alternatively, if a wideband horn were to be used then it would require numerous sampling probes to obtain the monopulse information which would cause scattering at the out-of-band frequencies.
Instead, for multiple band satellite communication ("Satcom") ground station feeds, some form of concentric feed antenna is often used in which the higher band feed antenna sits within the lower band antenna. However, if monopulse sensing is
required in the higher band antenna, and a metallic circular waveguide is used, its diameter must be increased to allow the monopulse information to propagate as a higher order mode. Unfortunately, this causes more degradation of the performance of the lower band antenna as it intrudes into its space more. One option sometimes used is to make the inner, high band antenna a dielectric rod radiator (or more simply "a dielectric rod"). The use of a dielectric rod causes less disruption to the operation of the outer, low band antenna, particularly as the rod can be gradually tapered in diameter to reduce the refiections of the outer antenna waves. Nevertheless, dielectric rods are not ideal antennas for satellite antenna feeds since their sidelobes can foe high and their E and H plane symmetry poor, leading to axial ratio degradation.
There is therefore a need to reduce the sidelobe levels and improve bandwidth and E- H plane symmetry of dielectric rod antennas. Doing so would reduce wastage of microwave energy to sidelobes, reduce susceptibility to interference and improve the polarisation purity of the transmitted and received signals.
It is an object of the present invention to address the above described need.
Summary of the Invention
According to a first aspect of the present invention there is provided a dielectric rod antenna assembly including a metallic waveguide and a dielectric rod radiator supported therein, wherein a plurality of corrugations are disposed between the waveguide and the dieiectric rod radiator for sidelobe reduction.
Preferably the corrugations are formed in the metallic waveguide though they may be formed in the dielectric rod radiator.
Where the corrugations are formed in the dielectric rod radiator they may be coated with metal using vacuum deposition. Alternatively, they may instead be coated with metal adhered thereto with conductive adhesives.
In a preferred embodiment the dielectric rod radiator is circular in cross section.
Preferably the dielectric rod radiator has tapered ends to reduce reflections in transitioning to air wave propagation and from air-f illed waveguide.
In a preferred embodiment of the invention a portion of constant cross section, for example a cylindrical section, is located between the tapered ends.
Preferably the corrugations are disposed along the portion of constant cross section.
In one embodiment the corrugations are graded in depth according to a linear variation from 0.5 to 0.25 of a wavelength in the dielectric.
Where the corrugations are formed on the dielectric rod they may be coated with metaf using a metallic housing with complementary machined corrugations and allowing the dielectric to be introduced by means of temporarily splitting the housing or moulding the dielectric in-situ.
Brief Description of the Drawings
The Detailed Description of the invention that is set forth beiow is not to be regarded as limiting the scope of the preceding Summary of the Invention in any way. The Detailed Description will make reference to a number of drawings as follows:
Figure 1 depicts a dielectric rod radiator with corrugated transition according to an embodtment of the present invention.
Figure 2 depicts a dielectric rod radiator with plain waveguide transition as is known in the prior art.
Figure 3 is a graph providing a comparison of modelled radiation patterns for the dielectric rod of Figure 1 with and without the corrugated transition region.
Figure 4 is a graph showing the ratio of the E and H plane field levels shown in dB and compared for the plain waveguide fed rod antenna of Figure 2 and the corrugated transition fed rod antenna of Figure 1.
Figure 5 is a graph showing the return loss for the plain waveguide and for a corrugated transition fed dielectric rod antenna according to an embodiment of the present invention, at 20 GHz.
Figure 6 is a partially sectioned diagram of a dual band feed embodiment of the invention, with the dielectric rod part shown un-sectioned.
Figure 7 is a fully sectioned diagram of the dual feed of Figure 6.
Figure 8 Is a cross sectional view of a second embodiment of a dual band feed according to the present invention.
Figure 9 is a close up and partially exploded view of a transition between the waveguide and dielectric rod radiator of the dual band feed of Figure 8 showing corrugations formed into the waveguide.
Detailed Description of Preferred Embodiments It is believed that the previously described undesirable sidelobes are partly caused by radiation which occurs at the transition of the rod from the metallic feeding waveguide to the dielectric rod surrounded by air. A computational electromagnetic model of identical dielectric rod antennas with and without a corrugated transition that is the subject of one embodiment of the subject invention has been constructed. The modelled dielectric rod radiator 1 with corrugated transition region 2 is shown in Figure
1. A similar dielectric rod radiator 3 with non-corrugated transition 4 is shown in Figure
2. Modelled radiation patterns for the two dielectric rod radiators 1 and 3 are compared in Figure 3. The corrugated transition dielectric rod antenna 1 in accordance with this embodiment of the invention shows lower side to be levels and greater E (electric) and H (magnetic) plane symmetry. The E and H plane symmetry is more clearly shown for the main lobe in Figure 4. The corrugated transition rod antenna 1 has a maximum E and H plane field strength difference of 0,4dB in the main lobe, whereas for the plain waveguide fed dielectric rod 3 the difference is 1.4dB. The reflection coefficients of
the two dielectric rod antennas 1 and 3 are shown In Figure 5. It will be noted that the corrugated transition dielectric rod antenna 1 has 3dB lower reflection amplitude,
A dielectnc rod antenna in accordance with a first embodiment of the present invention has a metallized, corrugated transition section between the adjacent metallic waveguide section (or "housing") and the air-surrounded dielectric rod radiator section. It is believed that these corrugations operate by gradually transforming the TE modes of the waveguide section to a hybrid HE mode prior to the dielectric rod alone. By eliminating the dependence of the electromagnetic modes upon axial direction currents in the metallized surrounding, the corrugations reduce the scale of the changes which occur at the end of the metallization, thus causing less radiation at this point and also causing less reflections, which assists bandwidth.
The dielectric rod is preferably circular in cross section as shown in Figure 1 , however other cross sections are also possible.
An embodiment of the invention for a dual band monopulse antenna feed is shown in Figure 6 and Figure 7. Referring now to Figure 6 there is shown a partially sectioned diagram of a dual band feed 10 according to an embodiment of the invention, with the dielectric rod radiator 12 shown un-sectioned. In Figure 6 the various parts are: waveguide for low band 14; dielectric rod radiating region16; dielectric rod corrugated section 18; dielectric rod waveguide adaptor taper 20; and high band waveguide 22-The corrugated section 18 of the dielectric rod is metallized and electrically bonded, to the metallic housing 13 using RF gasket or conductive adhesive.
The means of introduetng the low band electromagnetic waves into the larger waveguide is omitted for clarity, as it is incidental to the operation of the invention. One means is the use of tuned probes as will be known to those skilled in the art. The dielectric rod 12 preferably has tapered ends 16, 20 to reduce reflections in transitioning to air wave propagation and from air-filled waveguide.
The corrugations of the corrugated section 18 are preferably coated with metal using vacuum deposition or conductive adhesives.
The corrugations are preferably supported inside a machined or formed metallic enclosure in the form of the housing 13, with the voids being bridged across with EM gasket material or conductive adhesive. The corrugations are preferably graded in depth using a suitable function. One possible simple example is a linear variation from 0.5 to 0.25 of a wavelength in the dielectric.
Alternatively, the corrugations may be made by using a metallic housing with complementary machined corrugations and allowing the dielectric to be introduced by means of temporarily splitting the housing or moulding the dielectric in-situ.
It has been found that it is difficult to make the corrugated dielectric by machining thin slots in the dielectric rod and then applying a metal coating.
It is considerably easier to machine the corrugations in the circular waveguide and to adjust the dimensions to account for having air rather than dielectric inside the corrugations. It has been found that the advantageous electromagnetic properties of the assembly are little changed relative to the first embodiment provided adjustments are made for the change in dielectric constant. Referring now to Figure 8, there is shown a side cross-sectional view of a preferred embodiment of the invention comprising a dual band antenna assembly 25. In the antenna assembly 25 corrugations 24 have been machined into the circular metal housing 26 supporting the dielectric rod 12a. A close-up and partially exploded view of the transition region (indicated by dashed line 29) between the housing 24 and the dielectric rod radiator 12a is provided in Figure 9. in this case the dielectric rod 12a comprises central cylindrical portion 27 located between opposed tapered ends 16a, 20a. Unlike the first embodiment, no corrugations are formed in the cylindrical portion 27 of rod 12a. Machining the corrugations 24 into the metal wall 26 or into the dielectric rod 12 (as shown in the first embodiment of Figures 6 and 7) is a matter of mechanical convenience. As previously mentioned, it is believed that either arrangement will give essentially identical eiectromagnetic results provided due allowance is made for dimensional changes associated with the dielectric constant in the corrugations, and the loss of any dielectric, and in the metal surfaces of the corrugations.
It will be realised from the above that in at least one embodiment of the invention there is provided a dielectric rod antenna assembly including a dielectric rod . Pref erably the antenna assembly includes a metallic waveguide section and an air surrounded dielectric rod radiator wherein corrugations comprising a corrugated transition section are provided in a transition region between the metallic waveguide section (which section is sometimes called "the housing" herein) and the air-surrounded dielectric rod radiator section. The corrugations are preferably formed in the transition region between the dielectric rod and the metallic waveguide section. The corrugations may be formed either in the dielectric rod or in the metallic housing. The presence of the corrugations has been found to reduce sidelobes of E-H (electro-magnetic) radiation transmitted by the assembly in use. An antenna assembly according to an embodiment of the present invention has reduced sidelobe levels and improved bandwidth and E-H plane symmetry thereby reducing wastage of microwave energy to sidelobes, susceptibility to interference and improving the polarisation purity of the transmitted and received signals.
In compliance with the statute, the invention has been described in language more or less specific to structural or methodical features. The term "comprises" and its variations, such as "comprising" and "comprised of" are used throughout in an inclusive sense and not to the exclusion of any additional features.
It is to be understood that the invention is not limited to specific features shown or described since the means herein described comprises preferred forms of putting the invention into effect. The invention is, therefore, claimed in any of its forms or modifications within the proper scope of the appended claims appropriately interpreted by those skilled in the art. Throughout the description and claims of this specification, the singular encompasses the plural unless the context otherwise requires. In particular, where the indefinite article is used, the specification is to be understood as contemplating plurality as well as singularity, unless the context requires otherwise.
Features, integers, characteristics, compounds, chemical moieties or groups described in conjunction with a particular aspect, embodiment or example of the invention are to be understood to be applicable to any other aspect, embodiment or example described herein unless incompatible therewith.
Claims
1. A dielectric rod antenna assembly including a metallic waveguide and a dielectric rod radiator supported therein, wherein a plurality of corrugations are disposed between the waveguide and the dielectric rod radiator for sidelofoe reduction.
2. An antenna assembly according to claim 1 , wherein the corrugations are formed in the metallic waveguide.
3. An antenna assembly according to claim 1 , wherein the corrugations are formed in the dielectric rod radiator.
4. An antenna assembly according to claim 3, wherein the corrugations are coated with metal using vacuum deposition
5. An antenna assembly according to claim 3, wherein the corrugations are coated with metal adhered thereto with conductive adhesives,
8. An antenna assembly according to any one of the preceding ciaims wherein the dielectric rod is circular in cross section.
7. An antenna assembly according to any one of the preceding ciaims wherein the dielectric rod has tapered ends to reduce reflections in transitioning to air wave propagation and from air-filled waveguide.
8. An antenna assembly according to any one of the preceding ciaims wherein a portion of constant cross section is located between the tapered ends.
9. An antenna assembly according to any one of the preceding claims wherein the corrugations are disposed along the portion of constant cross section.
10. An antenna according to arty one of the preceding claims wherein the corrugations are graded in depth according to a linear variation from 0.5 to 0.25 of a wavelength in the dielectric.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2015901623A AU2015901623A0 (en) | 2015-05-06 | Improved Dielectric Rod Antenna | |
| AU2015901623 | 2015-05-06 | ||
| AU2015901709A AU2015901709A0 (en) | 2015-05-11 | Improved Dielectric Rod Antenna | |
| AU2015901709 | 2015-05-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2016176717A1 true WO2016176717A1 (en) | 2016-11-10 |
Family
ID=57217300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/AU2016/000155 WO2016176717A1 (en) | 2015-05-06 | 2016-05-06 | Improved dielectric rod antenna |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2016176717A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3544119A1 (en) * | 2018-03-19 | 2019-09-25 | MTI Wireless Edge Ltd. | Feed for dual band antenna |
| WO2020074955A1 (en) * | 2018-10-09 | 2020-04-16 | RF elements s.r.o. | Dual polarized horn antenna with asymmetric radiation pattern |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4468672A (en) * | 1981-10-28 | 1984-08-28 | Bell Telephone Laboratories, Incorporated | Wide bandwidth hybrid mode feeds |
| USH584H (en) * | 1986-12-18 | 1989-02-07 | The United States Of America As Represented By The Secretary Of The Army | Dielectric omni-directional antennas |
| JPH03167907A (en) * | 1989-11-28 | 1991-07-19 | Nippon Telegr & Teleph Corp <Ntt> | Dielectric focus horn and its production |
| US5550553A (en) * | 1993-02-18 | 1996-08-27 | Murata Manufacturing Co., Ltd. | Dielectric rod antenna |
| US20020175875A1 (en) * | 2000-05-23 | 2002-11-28 | Guy Verstraeten | Ka/ku dual band feedhorn and orthomode transduce (omt) |
| US20150097747A1 (en) * | 2013-10-04 | 2015-04-09 | Ki Min HWANG | Antenna system for simultaneous triple-band satellite communication |
-
2016
- 2016-05-06 WO PCT/AU2016/000155 patent/WO2016176717A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4468672A (en) * | 1981-10-28 | 1984-08-28 | Bell Telephone Laboratories, Incorporated | Wide bandwidth hybrid mode feeds |
| USH584H (en) * | 1986-12-18 | 1989-02-07 | The United States Of America As Represented By The Secretary Of The Army | Dielectric omni-directional antennas |
| JPH03167907A (en) * | 1989-11-28 | 1991-07-19 | Nippon Telegr & Teleph Corp <Ntt> | Dielectric focus horn and its production |
| US5550553A (en) * | 1993-02-18 | 1996-08-27 | Murata Manufacturing Co., Ltd. | Dielectric rod antenna |
| US20020175875A1 (en) * | 2000-05-23 | 2002-11-28 | Guy Verstraeten | Ka/ku dual band feedhorn and orthomode transduce (omt) |
| US20150097747A1 (en) * | 2013-10-04 | 2015-04-09 | Ki Min HWANG | Antenna system for simultaneous triple-band satellite communication |
Non-Patent Citations (6)
| Title |
|---|
| CLARRICOATS, P. J. B. ET AL.: "Broadband low-cross polarisation horn", IET, ELECTRONICS LETTERS, vol. 30, no. 25, 8 December 1994 (1994-12-08), pages 2085 - 2086 * |
| DUBROVKA, F. F. ET AL.: "Recent Progress in Development of Multiband Feed Horns (Review", INTERNATIONAL CONFERENCE ON ANTENNA THEORY AND TECHNIQUES, 17 September 2007 (2007-09-17), Sevastopol, Ukraine, pages 44 - 50, XP031199719 * |
| HANHAM, S. M. ET AL.: "Evolved-Profile Dielectric Rod Antennas", IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, vol. 59, no. 4, April 2011 (2011-04-01), XP011352738 * |
| JAMES, G. L. ET AL.: "Diplexing Feed Assemblies for Application to Dual-Reflector Antennas", IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, vol. 51, no. 5, May 2003 (2003-05-01), XP011068891 * |
| LEE, J. C. ET AL.: "The Development, Variations, and Applications of an EHF Dual-Band Feed", THE LINCOLN LABORATORY JOURNAL, vol. 4, no. 1, 1991 * |
| MILLIGAN, T.: "Design of Polyrod and Corrugated-Rod Antennas", ANTENNA DESIGNER'S HANDBOOK, IEEE ANTENNAS AND PROPAGATION MAGAZINE, vol. 42, no. 1, February 2000 (2000-02-01), XP011081233 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3544119A1 (en) * | 2018-03-19 | 2019-09-25 | MTI Wireless Edge Ltd. | Feed for dual band antenna |
| US10897084B2 (en) | 2018-03-19 | 2021-01-19 | Mti Wireless Edge, Ltd. | Feed for dual band antenna |
| WO2020074955A1 (en) * | 2018-10-09 | 2020-04-16 | RF elements s.r.o. | Dual polarized horn antenna with asymmetric radiation pattern |
| US10965041B2 (en) | 2018-10-09 | 2021-03-30 | Rf Elements S.R.O | Dual polarized horn antenna with asymmetric radiation pattern |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7907097B2 (en) | Self-supporting unitary feed assembly | |
| US9537209B2 (en) | Antenna array with reduced mutual coupling between array elements | |
| US20150214634A1 (en) | Dual-polarized dipole antenna | |
| Djerafi et al. | Corrugated substrate integrated waveguide (SIW) antipodal linearly tapered slot antenna array fed by quasi-triangular power divider | |
| JP6642862B2 (en) | Reflector antenna including dual band splash plate support | |
| US20130321227A1 (en) | Waveguide Antenna Having Annular Slots | |
| US3274603A (en) | Wide angle horn feed closely spaced to main reflector | |
| US9431715B1 (en) | Compact wide band, flared horn antenna with launchers for generating circular polarized sum and difference patterns | |
| Makar et al. | Compact antennas with reduced self interference for simultaneous transmit and receive | |
| US2644090A (en) | Recessed slot antenna | |
| WO2016176717A1 (en) | Improved dielectric rod antenna | |
| CN110459861B (en) | Double-frequency elliptical slot antenna based on substrate integrated waveguide design | |
| Wang et al. | A metallic 3D printed K‐band quasi‐pyramidal‐horn antenna array | |
| WO2015164075A1 (en) | Dielectric hollow antenna | |
| Yamaguchi et al. | Inclined slot array antennas on a hollow rectangular coaxial line | |
| CN114843772A (en) | Dual-frequency dual-circular-polarization high-isolation Fabry-Perot cavity MIMO antenna and processing method thereof | |
| RU195632U1 (en) | Two-channel transceiver antenna system with improved polarization isolation characteristic | |
| CN109616762B (en) | Ka-band high-gain substrate integrated waveguide corrugated antenna and system | |
| Cai et al. | Millimeter wave low-profile relay antennas for 5g full duplex self-interference suppression | |
| Ala et al. | Two-layer dielectric rod antenna for far distance | |
| US20230420858A1 (en) | End-fire tapered slot antenna | |
| Deng et al. | A compact W-band tapered slot antenna on silicon substrate for active phased array antenna | |
| CN214336912U (en) | Vivaldi antenna | |
| Turkmen et al. | Bandwidth enhancement of omnidirectional circularly polarized Slotted antenna for satellite communication | |
| JP6590936B2 (en) | Coaxial horn excitation method for wide bandwidth and circular polarization |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 16788943 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 16788943 Country of ref document: EP Kind code of ref document: A1 |