ITRM20100511A1 - HYBRID PRINTED ANTENNA WITH MULTIPLE RADIANT ELEMENTS - Google Patents
HYBRID PRINTED ANTENNA WITH MULTIPLE RADIANT ELEMENTS Download PDFInfo
- Publication number
- ITRM20100511A1 ITRM20100511A1 IT000511A ITRM20100511A ITRM20100511A1 IT RM20100511 A1 ITRM20100511 A1 IT RM20100511A1 IT 000511 A IT000511 A IT 000511A IT RM20100511 A ITRM20100511 A IT RM20100511A IT RM20100511 A1 ITRM20100511 A1 IT RM20100511A1
- Authority
- IT
- Italy
- Prior art keywords
- radiant elements
- fact
- antenna
- multiple radiant
- printed antenna
- Prior art date
Links
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 244000045947 parasite Species 0.000 claims description 2
- 239000000523 sample Substances 0.000 claims description 2
- 230000003071 parasitic effect Effects 0.000 description 5
- 150000003071 polychlorinated biphenyls Chemical class 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
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- 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
- H01Q19/10—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 reflecting surfaces
- H01Q19/106—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 reflecting surfaces using two or more intersecting plane surfaces, e.g. corner reflector antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0414—Substantially flat resonant element parallel to ground plane, e.g. patch antenna in a stacked or folded configuration
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Details Of Aerials (AREA)
Description
Descrizione Description
La presente invenzione riguarda un dispositivo denominato Antenna Stampata Ibrida ad Elementi Radianti Multipli che viene realizzato in modo tale da possedere contemporaneamente una elevata larghezza di banda ed un’elevata direttività. The present invention relates to a device called Hybrid Printed Antenna with Multiple Radiant Elements which is made in such a way as to simultaneously possess a high bandwidth and high directivity.
Sono noti sul mercato antenne stampate a larga banda che fanno uso di patch parassiti, posti in prossimità dell’elemento d’antenna alimentato. Broadband printed antennas are known on the market that make use of parasitic patches, placed in the vicinity of the powered antenna element.
Sono altresì note antenne che fanno uso di ampi riflettori curvilinei (come, ad esempio, le antenne a parabola), le cui dimensioni sono molto maggiori della lunghezza d’onda a centro banda, al fine di ottenere una grande direttività ed una ridotta larghezza di fascio a metà potenza. Antennas are also known which make use of large curvilinear reflectors (such as, for example, parabola antennas), whose dimensions are much greater than the wavelength at the center of the band, in order to obtain a great directivity and a reduced width of half power beam.
Sono ancora note in letteratura antenne stampate a banda stretta ma alta direttività ottenute mediante la giustapposizione di patch alimentati con patch parassiti posti ad una distanza pari circa ad un quarto della lunghezza d’onda a centro banda. Narrow band but high directivity printed antennas are still known in the literature obtained by juxtaposing patches fed with parasitic patches placed at a distance equal to about a quarter of the wavelength in the center of the band.
Sono infine presenti sul mercato pannelli che combinano più antenne stampate alimentate al fine di realizzare il guadagno e la larghezza di fascio desiderata. Finally, there are panels on the market that combine several fed printed antennas in order to achieve the desired gain and beam width.
La presente invenzione combina invece le sopracitate metodologie di progetto per ottenere un’antenna stampata compatta ad alto guadagno e ampia banda d’impedenza, dove un solo elemento è effettivamente alimentato. The present invention, on the other hand, combines the aforementioned design methodologies to obtain a compact printed antenna with high gain and wide impedance band, where only one element is actually powered.
La presenza di un solo elemento alimentato consente una riduzione dei costi di produzione ed esercizio permettendo inoltre di mantenere costanti le performance dell’antenna in oggetto tanto in ricezione quanto in trasmissione. È infatti noto come l’utilizzo di più elementi radianti alimentati, al fine di aumentare il guadagno d’antenna, comporti o lo svantaggio economico di impiegare un numero di ricetrasmettitori pari a quello delle antenne oppure di progettare una rete di alimentazione con un solo ricetrasmettitore al costo di introdurre perdite addizionali nel sistema, dovute al comportamento non ideale dei divisori di potenza o degli accoppiatori direzionali impiegati nella rete. The presence of a single powered element allows a reduction in production and operating costs, also allowing to maintain constant the performance of the antenna in question both in reception and in transmission. It is in fact known how the use of several powered radiating elements, in order to increase the antenna gain, involves either the economic disadvantage of using a number of transceivers equal to that of the antennas or of designing a power supply network with a single transceiver. at the cost of introducing additional losses into the system, due to the non-ideal behavior of the power dividers or directional couplers used in the network.
L’utilizzo di più elementi parassiti di forma poligonale consente invece di realizzare un raggruppamento di antenne alimentato per accoppiamento elettromagnetico all’unico radiatore collegato fisicamente all’alimentazione (o driver), che risultano, nel loro insieme, un’unica antenna a larga banda, con una conseguente drastica riduzione delle perdite, dovute alle non idealità di progetto relativamente alla rete di alimentazione, ed una direttività aumentata, dovuta alla molteplicità di elementi radianti utilizzati. The use of several parasitic elements of polygonal shape allows instead to create a grouping of antennas powered by electromagnetic coupling to the only radiator physically connected to the power supply (or driver), which together result in a single broadband antenna , with a consequent drastic reduction of losses, due to the non-idealities of the project relative to the power supply network, and an increased directivity, due to the multiplicity of radiant elements used.
La disposizione degli elementi parassiti, che si trovano a corta distanza (minore di un quarto di lunghezza d’onda a centro banda) dal driver, permette inoltre di modulare il fascio dell’antenna, in termini di larghezza di fascio a metà potenza in azimut ed elevazione; alcune disposizioni potrebbero comportare l’insorgere di lobi secondari (o grating lobes) non desiderati all’estremità superiore della banda utile. L’utilizzo di un riflettore curvilineo integrato con il piano di massa dell’antenna a patch permette quindi la riduzione di tali lobi secondari ed aggiunge un ulteriore grado di libertà nella formazione del fascio di radiazione dell’antenna migliorando, inoltre, in modo significativo il rapporto front-to-back di questa stessa. The arrangement of the parasitic elements, which are located at a short distance (less than a quarter wavelength at the center of the band) from the driver, also allows to modulate the antenna beam, in terms of beamwidth at half power in azimuth. and elevation; some provisions could lead to the emergence of unwanted secondary lobes (or grating lobes) at the upper end of the useful band. The use of a curvilinear reflector integrated with the ground plane of the patch antenna therefore allows the reduction of these secondary lobes and adds a further degree of freedom in the formation of the antenna radiation beam, also significantly improving the front-to-back relationship of this same.
Il driver può essere alimentato indifferentemente sia per accoppiamento diretto con un probe coassiale, sia tramite microscia, sia per accoppiamento tramite apertura con una linea di trasmissione, a seconda dei requisiti di progetto. Come è noto in letteratura, il primo tipo è quello che permette un maggior guadagno ed un miglior rapporto front-to-back a scapito di una maggiore complessità costruttiva, il secondo privilegia l'economicità del progetto, il terzo invece media i vantaggi dei primi due approcci. The driver can be powered indifferently either by direct coupling with a coaxial probe, by means of a micro-switch, or by coupling through an opening with a transmission line, depending on the design requirements. As is known in the literature, the first type is the one that allows greater gains and a better front-to-back ratio at the expense of greater constructive complexity, the second favors the cost-effectiveness of the project, the third instead mediates the advantages of the first two approaches.
L’invenzione viene di seguito descritta, a scopo illustrativo e non limitativo, facendo riferimento alle seguenti figure allegate: The invention is described below, for illustrative and non-limiting purposes, referring to the following attached figures:
FIC.l : schema del dispositivo. FIC.l: scheme of the device.
L’invenzione sfrutta il fatto _che la componentistica elettronica odierna si basa- per lo più sulla tecnologia planare dei circuiti stampati. The invention exploits the fact _ that today's electronic components are mostly based on the planar technology of printed circuits.
Nella FIG.1 viene schematizzato il dispositivo, a scopo illustrativo e non limitativo, costituito da 2 o più schede stampate o PCB separate da appositi distanziatori (di altezza di , d2, ... dn) realizzati con materiali che non interferiscano con le prestazioni dell'antenna. Sul PCB inferiore è stampato il patch poligonale o ellissoidale (1) collegato all’alimentazione, mentre sui PCB superiori sono realizzati i patch poligonali o ellissoidali parassiti (2). I patch, sia parassiti che driver, possono essere realizzati tanto sulla faccia superiore che inferiore del PCB. Il riflettore (3) viene realizzato in modalità integrata con il piano di massa in modo da non incidere eccessivamente sulle dimensioni complessive dell'antenna. La sua geometria viene scelta sulla base del livello di soppressione dei lobi secondari e sul massimo guadagno d’antenna desiderato. In aggiunta, opzionalmente, è previsto l’uso di un radome (4), che applicato ermeticamente al riflettore sigilli l’antenna, proteggendola dagli agenti atmosferici. FIG. 1 schematizes the device, for illustrative and non-limiting purposes, consisting of 2 or more printed boards or PCBs separated by special spacers (height of, d2, ... dn) made with materials that do not interfere with performance antenna. The polygonal or ellipsoidal patch (1) connected to the power supply is printed on the lower PCB, while the polygonal or ellipsoidal parasitic patches are made on the upper PCBs (2). Patches, both parasites and drivers, can be made both on the top and bottom face of the PCB. The reflector (3) is made in integrated mode with the ground plane so as not to excessively affect the overall dimensions of the antenna. Its geometry is chosen on the basis of the level of suppression of the secondary lobes and the maximum desired antenna gain. In addition, optionally, the use of a radome (4) is provided, which hermetically applied to the reflector seals the antenna, protecting it from atmospheric agents.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000511A ITRM20100511A1 (en) | 2010-10-01 | 2010-10-01 | HYBRID PRINTED ANTENNA WITH MULTIPLE RADIANT ELEMENTS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000511A ITRM20100511A1 (en) | 2010-10-01 | 2010-10-01 | HYBRID PRINTED ANTENNA WITH MULTIPLE RADIANT ELEMENTS |
Publications (1)
Publication Number | Publication Date |
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ITRM20100511A1 true ITRM20100511A1 (en) | 2012-04-02 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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IT000511A ITRM20100511A1 (en) | 2010-10-01 | 2010-10-01 | HYBRID PRINTED ANTENNA WITH MULTIPLE RADIANT ELEMENTS |
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5497164A (en) * | 1993-06-03 | 1996-03-05 | Alcatel N.V. | Multilayer radiating structure of variable directivity |
EP0957535A1 (en) * | 1998-05-15 | 1999-11-17 | Société Européenne des Satellites | Electromagnetically coupled microstrip antenna |
US6133882A (en) * | 1997-12-22 | 2000-10-17 | Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of Industry Through Communications Research Centre | Multiple parasitic coupling to an outer antenna patch element from inner patch elements |
EP1555721A1 (en) * | 2002-10-25 | 2005-07-20 | National Institute of Information and Communications Technology | Antenna device |
WO2006080826A1 (en) * | 2005-01-31 | 2006-08-03 | Wireless Data Communication Co., Ltd | Antenna assembly |
US20070229377A1 (en) * | 2005-11-25 | 2007-10-04 | Mccarrick Charles D | Low profile msat skewed beam antenna methods and systems |
-
2010
- 2010-10-01 IT IT000511A patent/ITRM20100511A1/en unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5497164A (en) * | 1993-06-03 | 1996-03-05 | Alcatel N.V. | Multilayer radiating structure of variable directivity |
US6133882A (en) * | 1997-12-22 | 2000-10-17 | Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of Industry Through Communications Research Centre | Multiple parasitic coupling to an outer antenna patch element from inner patch elements |
EP0957535A1 (en) * | 1998-05-15 | 1999-11-17 | Société Européenne des Satellites | Electromagnetically coupled microstrip antenna |
EP1555721A1 (en) * | 2002-10-25 | 2005-07-20 | National Institute of Information and Communications Technology | Antenna device |
WO2006080826A1 (en) * | 2005-01-31 | 2006-08-03 | Wireless Data Communication Co., Ltd | Antenna assembly |
US20070229377A1 (en) * | 2005-11-25 | 2007-10-04 | Mccarrick Charles D | Low profile msat skewed beam antenna methods and systems |
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