WO2010029304A1 - Antenne multifonctionnelle - Google Patents

Antenne multifonctionnelle Download PDF

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Publication number
WO2010029304A1
WO2010029304A1 PCT/GB2009/002174 GB2009002174W WO2010029304A1 WO 2010029304 A1 WO2010029304 A1 WO 2010029304A1 GB 2009002174 W GB2009002174 W GB 2009002174W WO 2010029304 A1 WO2010029304 A1 WO 2010029304A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
multifunctional
microstrip patch
monopole
antenna according
Prior art date
Application number
PCT/GB2009/002174
Other languages
English (en)
Inventor
Peter Hall
Elham Ebrahimi
Original Assignee
The University Of Birmingham
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by The University Of Birmingham filed Critical The University Of Birmingham
Publication of WO2010029304A1 publication Critical patent/WO2010029304A1/fr

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Classifications

    • 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
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/40—Element having extended radiating surface
    • 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
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
    • 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

Definitions

  • the invention relates to a multifunctional antenna. Particularly, but not exclusively, the invention relates to a multifunctional antenna for use in a portable device such as a mobile phone, personal digital assistant (PDA), radio or laptop.
  • a portable device such as a mobile phone, personal digital assistant (PDA), radio or laptop.
  • PDA personal digital assistant
  • CR Cognitive Radio
  • SSCR Spectrum Sensing Cognitive Radio
  • a CR device would change its communication frequency whenever necessary - for example, to avoid interference and spectrum "traffic jams"; to make better use of the many currently under-utilised licensed frequency bands; to cater for different applications; or to respond to user requirements.
  • a CR would have to co-exist with legacy wireless systems by sharing the same spectrum resources without significantly interfering with them. In order to make informed decisions about the choice of operating frequency the CR must scan the frequency spectrum listening for legacy users and available bandwidth.
  • a multifunctional antenna comprising a substrate having a monopole antenna provided on a first side thereof; and a microstrip patch antenna provided on an opposite second side thereof; the relative positions of the monopole antenna and the microstrip patch antenna being such that the monopole antenna serves as a ground plane for the microstrip patch antenna.
  • the present invention therefore provides a compact multifunctional antenna which comprises both a monopole antenna and a microstrip patch antenna. Accordingly, the antenna can be made to operate in a wideband or an Ultra Wide-Band (UWB) mode when the monopole antenna is activated and to operate over a narrowband of frequencies when the microstrip patch antenna is activated.
  • the antenna may be configured to operate simultaneously in both the UWB and narrowband modes of operation. Accordingly, the sensing and communicating functions of a CR could be performed simultaneously with the present antenna.
  • UWB Ultra Wide-Band
  • the monopole antenna may comprise a planar radiating patch.
  • the shape of the radiating patch of the monopole antenna is not particularly limited and may be, for example, square, rectangular, triangular, circular, elliptical, annular, star-shaped or irregular.
  • the radiating patch may include at least one notch, slot or parasitic element. It will be understood that the shape and configuration of the monopole antenna will depend upon the desired characteristics of the antenna for the application in question.
  • the size and shape of the microstrip patch antenna may be varied to provide the optimum characteristics for the narrowband mode of operation.
  • the microstrip patch antenna may be, for example, square, rectangular, triangular, circular, elliptical, annular, star-shaped or irregular.
  • the microstrip patch antenna may include at least one notch, slot or parasitic element.
  • the microstrip patch antenna may be electrically connected (i.e. shorted) to the monopole antenna. More specifically, the microstrip patch antenna may be configured as an Inverted-L
  • IFA Inverted-F Antenna
  • IFA Inverted-F Antenna
  • PIFA Planar Inverted-F Antenna
  • microstrip patch antenna will depend upon the desired characteristics of the antenna for the application in question.
  • the monopole antenna is generally wine-glass shaped with a rounded base section and a rectangular top section.
  • the rounded base section may be part-circular or part-elliptical.
  • a first transmission line may be coupled to the monopole antenna to link the monopole antenna to a transmitter and/or receiver circuit.
  • a second transmission line may be coupled to the microstrip patch antenna to link the microstrip patch antenna to a transmitter and/or receiver circuit.
  • the first and/or second transmission line may be constituted by a microstrip comprising a conducting strip on the first side of the substrate and a transmission line ground plane provided on the second side of the substrate, opposite to the conducting strip.
  • the conducting strip may be tapered to alter the impedance of the first and/or second transmission line.
  • the first and/or second transmission line may be constituted by a coplanar waveguide (CPW) comprising a conductor having a transmission line ground plane on either side thereof, each spaced from the conductor by a pre-determined gap. Accordingly, in the case of a CPW, all of the components of the first and/or second transmission line are provided on the same side of the substrate.
  • CPW coplanar waveguide
  • the shape and configuration of the first and/or second transmission line may vary to provide the required impedance characteristics.
  • first and/or second transmission line may be coupled, respectively, to the monopole antenna and/or the microstrip patch antenna along an edge thereof and may be disposed centrally along the edge or offset to one side.
  • first and/or second transmission line may be coupled, respectively, to the monopole antenna and/or the microstrip patch antenna at a corner thereof.
  • the transmission line ground plane may also serve as a ground plane for the monopole antenna.
  • ground plane in a monopole antenna serves as an impedance matching circuit
  • the dimensions of the ground plane (that is the transmission line ground plane, as defined above) and the feed gap provided between the lower surface of the radiating patch and the top surface of the ground plane affect the operating bandwidth.
  • a plurality of microstrip patch antennas may be provided and arranged so that the monopole antenna serves as a ground plane for each of them. More specifically, the radiating patch of the monopole antenna may serve as a ground plane for the/each microstrip patch antenna.
  • a switching means may be provided for selectively activating (i.e. feeding) one or both of the monopole antenna and the microstrip patch antenna.
  • the multifunctional antenna may be configured to be switchable from one mode of operation, suitable for one application, to another mode of operation, suitable for another application.
  • Some possible applications for the UWB antenna include broadband wireless internet, spectrum scanning in cognitive radios, and wireless USB (i.e. the streaming of high bandwidth data from one device to another).
  • Applications for the narrowband antenna would include any form of narrowband communication, such as wireless LAN and GSM, and the communications function within a cognitive radio system.
  • a parametric study may be undertaken to evaluate the optimum construction of a particular multifunctional antenna according to an embodiment of the present invention.
  • Figure 1 illustrates a view of the top layer of a multifunctional antenna according to a first embodiment of the present invention, as printed onto a substrate;
  • Figure 2 illustrates a view of the bottom layer of the multifunctional antenna shown in Figure 1, as printed onto the substrate, with the structure provided on the top layer illustrated in dashed lines;
  • Figure 3 shows a graph of both measured and simulated return loss against frequency for the antenna shown in Figures 1 and 2, when operating in UWB mode;
  • Figure 4 shows a graph of both measured and simulated return loss against frequency for the antenna shown in Figures 1 and 2, when operating in narrowband mode;
  • Figure 5A illustrates some alternative shapes for the monopole antenna shown in Figure
  • the radiating patch is a polygon which is fed from one of its straight edges;
  • Figure 5B illustrates some alternative shapes for the monopole antenna shown in Figure
  • Figure 5D illustrates some alternative shapes for the monopole antenna shown in Figure
  • the radiating patch is a polygon incorporating a notch therein;
  • Figure 5E illustrates some alternative shapes for the monopole antenna shown in Figure 1 , wherein the radiating patch incorporates cut outs;
  • Figure 5 F illustrates some alternative shapes for the monopole antenna shown in Figure
  • Figure 6A illustrates some alternative shapes for the monopole antenna shown in Figure
  • ground plane incorporates notches, slots and slits
  • Figure 6B illustrates some alternative shapes for the monopole antenna shown in Figure
  • Figure 6C illustrates some alternative shapes for the monopole antenna shown in Figure
  • ground plane incorporates cut outs and bevels at the feed point
  • Figure 7 A illustrates some alternative shapes for the monopole antenna shown in Figure
  • Figure 7B illustrates some alternative shapes for the monopole antenna shown in Figure 1 , wherein the radiating patch is fed through multiple points;
  • Figure 8A illustrates some alternative shapes for the microstrip patch antenna shown in
  • Figure 8B illustrates some alternative shapes for the microstrip patch antenna shown in
  • Figure 1 wherein the radiating patch is a complex geometric shape
  • Figure 9 illustrates some alternative shapes for the microstrip patch antenna shown in
  • Figure 10 illustrates some alternative shapes for the microstrip patch antenna shown in
  • Figure 11 illustrates an alternative configuration for the microstrip patch antenna shown in Figure 2, namely a Planar Inverted-F Antenna (PIFA) structure;
  • PIFA Planar Inverted-F Antenna
  • Figure 12 illustrates some alternative shapes for the planar surface of the PIFA structure shown in Figure 11 ;
  • Figure 13 illustrates a view similar to that of Figure 2 but with the microstrip patch antenna rotated 90 degrees with respect to the monopole antenna; and Figure 14 illustrates similar to that of Figure 2 but with the microstrip patch antenna rotated 180 degrees with respect to the monopole antenna.
  • top layer 10 of a multifunctional antenna 12 comprises a monopole antenna 13 in the form of a radiating patch 14 which is fed at the centre of its base 16 by a coplanar waveguide (CPW) 18.
  • the CPW 18 comprises a central conductor 20 having a section of ground plane 22 on either side thereof.
  • the patch 14 is wine-glass shaped with a rectangular top section 24 and a half-elliptical bottom section 26.
  • the semi-major axis, r a , and semi- minor axis, r b , of the half-elliptical bottom section 26, are 15 mm and 8 mm, respectively.
  • the conductor 20 has width W f of 4mm and each section of ground plane 22 is spaced from the conductor 20 by a gap g f of 0.33mm.
  • the CPW 18 is therefore arranged to provide a 50 ⁇ impedance to the patch 14.
  • a feed gap g is provided between the base 16 of the patch 14 and each section of ground plane 22. Since the ground plane in a monopole antenna serves as an impedance matching circuit, the dimensions of each section of ground plane 22 and the feed gap g affect the operating bandwidth of the antenna 13.
  • the feed gap g is set at 0.3 mm
  • the length L of each section of ground plane 22 is set at 10 mm
  • the width W from the far end of one section of ground plane 22 to the far end of the other section of ground plane 22 is 54 mm.
  • the monopole antenna 13 is printed onto a dielectric substrate 28.
  • the substrate 28 is a Taconic TLC laminate with a relative permittivity ⁇ r of 3+/-0.05 and a thickness h of 0.79mm.
  • the monopole antenna 13 has been demonstrated to operate in an UWB of frequencies from approximately 3 to 11 GHz, as will be described in more detail below.
  • FIG 2 shows the bottom layer 30 of the multifunctional antenna 12 shown in Figure 1, with the structure provided on the top layer 10 illustrated in dashed lines.
  • a microstrip patch antenna 32 is printed onto the bottom layer 30 and comprises a rectangular patch 34 which is fed by a tapered microstrip transmission line 36.
  • the rectangular patch 34 is disposed above the radiating patch 14 of the monopole antenna 13 such that the monopole antenna 13 serves as the ground plane for the microstrip patch antenna 32. More specifically, the rectangular patch 34 is positioned generally above the right-hand side of the half-elliptical bottom section 26 (when viewed from the bottom layer 30) and extends a short distance upwardly into the rectangular top section 24.
  • the rectangular patch 34 is surrounded on all sides by the radiating patch 14.
  • the rectangular patch 34 of the present embodiment has a width W pa tch of 5 mm and a length L pa t C h of 8 mm.
  • the rectangular patch 34 is electrically connected to the radiating patch 14 by a shorting pin 38.
  • the shorting pin 38 is positioned adjacent the base 40 of the rectangular patch 34, a short distance in from the left-hand edge 42.
  • the tapered microstrip transmission line 36 is arranged to feed the rectangular patch 34 at the far right-hand edge 44 of the base 40.
  • a taper 46 transforms the tapered microstrip transmission line 36 from a 50 ⁇ line above the base of the section of ground plane 22 to a 100 ⁇ line above the top of the section of ground plane 22.
  • the microstrip patch antenna 32 can operate well as a narrowband antenna within the 802.1 1a WLAN band (5.15-5.825GHz). However, it will be understood that the performance of the microstrip patch antenna 32 can be affected by altering the size of the rectangular patch 34, the position of the shorting pin 38, the position of the rectangular patch 34 relative to the monopole antenna 13 and the position of the tapered microstrip transmission line 36.
  • the device when the monopole antenna 13 is operated, the device exhibits a good return loss over a UWB range of frequencies from approximately 3 to 11 GHz. Moreover, the measured return loss agrees well with the simulated return loss in the frequency range 3 GHz to 5.5 GHz. At frequencies higher than 5.5 GHz it is shown that the simulated return loss remains close to -10 dB. However, the measured return loss shows that a second resonance (not predicted in simulation) appears at 6.7 GHz. Above 6.7 GHz the measured and simulated results deviate by almost 5 dB in some places and the Applicants believe that this discrepancy may be attributed to the effect of using only relatively small (10 mm long) sections of ground plane 22.
  • Figure 4 shows the results when the microstrip patch antenna 32 is operated and the device serves as a narrowband antenna at approximately 5.55GHz.
  • the measured results generally show a good agreement with the simulated results. However, the measured results do show a wider -10 dB bandwidth in comparison with the simulated results and the Applicants believe this discrepancy may be due to the characteristics of the substrate employed and the tolerances in the manufacturing process.
  • monopole antenna 13 operates well over a UWB range of frequencies and the microstrip patch antenna 32 operates well within the 802.1 Ia WLAN band. Accordingly, embodiments of the present invention can provide a combined UWB and narrowband antenna in a compact configuration, for use in mobile phone and Cognitive Radio (CR) applications, amongst others.
  • the UWB antenna could fulfil the scanning or sensing task and the narrowband antenna could perform the required communications.
  • the (UWB) monopole antenna 13 comprised a printed wine-glass shaped radiating patch 14 fed by a CPW 18, other designs of monopole antenna 13 could be employed.
  • different shapes of radiating patch 14 can be used and these can either be CPW or microstrip fed.
  • the currents are mainly distributed on the upper edge of the ground plane and the lower edge of the radiating patch. Accordingly, the shape of the radiating patch at the feed point, the dimensions of the ground plane and the gap between the ground plane and the feed point will influence the performance of the antenna.
  • the ground plane should therefore be considered part of the matching circuit since varying the feeding arrangement can affect the input impedance and therefore allow the operating bandwidth to be tuned.
  • the lower end of the UWB frequency band is mainly influenced by the dimensions of the radiating patch. Bevelling the bottom edge of the radiating patch has been demonstrated to significantly increase the range of the upper end of the UWB.
  • the optimization of the shape of the radiating patch, especially the shape of the bottom portion of the radiating patch improves the impedance bandwidth by achieving a smooth impedance transition.
  • the shape of the bottom portion of the radiating patch is important for controlling the capacitive coupling with the ground plane. Re-shaping of the bottom portion of the radiating patch can strongly affect the current path.
  • Figures 5A to 5f show several classes of typical UWB planar monopole antennas.
  • the radiating patch can be a polygon fed either from one of its straight edges (Figure 5A) or from one of its corners (Figure 5B).
  • the radiating patch may have a smooth bottom (Figure 5C), include bevels or notches (Figure 5D), include different cut outs (Figure 5E), or have added stubs or parasitic elements (Figure 5F). It will be understood that combinations and derivations of all of the mentioned options could be employed for good impedance matching.
  • the ground plane in printed monopole antennas forms a part of the matching system, there could be various modifications in the configuration of the ground plane as shown in Figures 6A to 6C.
  • the ground plane may include notches, slots and slits (Figure 6A), bevels (Figure 6B) and cut outs or bevels at the feed point ( Figure 6C).
  • the feeding configuration has a considerable affect on the impedance matching.
  • Several feeding arrangements are illustrated in Figures 7 A and 7B.
  • the radiating patch can be fed asymmetrically, or be connected to the ground plane via a shorting pin as shown in Figure 7A.
  • it can be fed through multiple points either by having multiple feed lines or by having a fork shaped feed line, examples of both these arrangements are depicted in Figure 7B.
  • monopole antenna may be realized by combining the above mentioned design features or by changing between CPW and microstrip feed arrangements.
  • a UWB monopole antenna serves as the ground plane for a narrowband microstrip patch antenna. Consequently, less space is required for these two antenna structures than would normally be required in order to be able to switch between these two states of operation (i.e. UWB and narrowband).
  • the multifunctional antenna may be configured to operate in both UWB and narrowband modes simultaneously by having two separate input ports, one for each antenna.
  • the UWB antenna 13 is a CPW fed monopole it can be considered as a defected ground plane for the narrowband antenna 32. This results in more complicated couplings between the UWB and narrowband antenna.
  • the rectangular patch 34 of the narrowband antenna 32 is fed by a transmission line 36 having a defected ground plane since there is a taper-shaped slot 50 underneath the transmission line 36.
  • the Applicants have shown that the taper- shaped slot 50 in the ground plane contributes to the matching circuit for the narrowband antenna 32.
  • the Applicants have also shown that the dimensions and the lateral position of the rectangular patch 34 relative to the UWB antenna 13 and the shorting pin 38 have considerable effects on the resonant frequency of the narrowband antenna 32. This is thought to be due to the alteration of the current distributions caused by the presence of the UWB antenna 13 compared to a conventional shorted patch antenna.
  • the structure of the narrowband antenna 32 can be chosen from a wide range of possible structures which comprise printed microstrip patches of different shapes and dimensions, either with or without shorting pins.
  • microstrip patch antennas A large amount of work has been performed on microstrip patch antennas over the past 25 years; however, all of these are derivations of a generic microstrip patch antenna which comprises a microstrip patch on one side of a substrate, a ground plane on the opposite side of the substrate and a feed line coupled to the microstrip patch.
  • the principal geometric shapes employed in microstrip patch antennas are shown in Figure 8A and possible variants on these shapes are shown in Figure 8B.
  • Microstrip patch antennas can be short-circuited along the null voltage plane (i.e. through the substrate) to form a shorted microstrip patch antenna.
  • Figure 7 shows a principal structure of such an antenna, which is categorized as a Planar Inverted-F Antenna (PIFA).
  • PIFA Planar Inverted-F Antenna
  • the PIFA is widely used in wireless devices such as mobile handsets.
  • PIFAs can also have different shapes and feeding arrangements.
  • the position and number of shorting pins increases the variety of the design possibilities.
  • the microstrip patch antenna 32 may be rotated by 90 degrees with respect to the monopole antenna 13, as shown in Figure 13 or it may be rotated by 180 degrees with respect to the monopole antenna 13, as shown in Figure 14.
  • a particular advantage of embodiments of the present invention is that they provide a multifunctional antenna which can operate in two or more bandwidths and which does not take up an excessive amount of space. Accordingly, these factors should be taken into account when optimising the antenna design.
  • the proposed multifunctional antenna combines two different antennas mainly for applications in which there is a need for multiple frequency and bandwidth operation.
  • One possible application is in Cognitive Radio (CR) networks in which the radio reconfigures its characteristics according to changes in the radio background so as to efficiently exploit the radio spectrum.
  • CR Cognitive Radio
  • UWB wideband antenna
  • the communication could then be carried out by a narrowband antenna operating within the selected frequency range.

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  • Waveguide Aerials (AREA)

Abstract

L'invention concerne une antenne multifonctionnelle (12) comprenant un substrat (28) ayant une antenne unipolaire (13) disposée sur un premier côté (10) de celui-ci et une antenne de raccordement à microbande (32) disposée sur un second côté opposé (30) de celui-ci. Les positions relatives de l'antenne unipolaire (13) et de l'antenne de raccordement à microbande (32) sont telles que l'antenne unipolaire (13) sert de plan de sol à l'antenne de raccordement à microbande (32).
PCT/GB2009/002174 2008-09-12 2009-09-10 Antenne multifonctionnelle WO2010029304A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0816755A GB0816755D0 (en) 2008-09-12 2008-09-12 Multifunctional antenna
GB0816755.3 2008-09-12

Publications (1)

Publication Number Publication Date
WO2010029304A1 true WO2010029304A1 (fr) 2010-03-18

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WO (1) WO2010029304A1 (fr)

Cited By (13)

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ITRM20100391A1 (it) * 2010-07-15 2012-01-16 Clu Tech Srl Antenna stampata miniaturizzata con carichi reattivi combinati
EP2625744A1 (fr) * 2010-10-05 2013-08-14 Laird Technologies, Inc. Antennes multi-bandes à bande large
CN105071035A (zh) * 2015-09-06 2015-11-18 哈尔滨工业大学 兼容wlan系统的超宽带天线
CN105186134A (zh) * 2015-09-06 2015-12-23 哈尔滨工业大学 超宽带天线
EP3176873A1 (fr) * 2015-12-01 2017-06-07 Swisscom AG Antenne planaire à bande ultralarge et double polarisation
WO2018126386A1 (fr) * 2017-01-05 2018-07-12 周丹 Détecteur de fond de trou
WO2018126371A1 (fr) * 2017-01-05 2018-07-12 周丹 Détecteur de fond de trou
EP2950391B1 (fr) * 2013-01-24 2018-09-05 Noise Laboratory Co. Ltd. Antenne
WO2020007746A1 (fr) * 2018-07-02 2020-01-09 Agc Glass Europe Vitrage à antenne de véhicule
CN113178696A (zh) * 2021-03-30 2021-07-27 普联国际有限公司 一种天线及天线设备
US11502414B2 (en) 2021-01-29 2022-11-15 Eagle Technology, Llc Microstrip patch antenna system having adjustable radiation pattern shapes and related method
US12009915B2 (en) 2021-01-29 2024-06-11 Eagle Technology, Llc Compact receiver system with antijam and antispoof capability
EP4386984A1 (fr) * 2022-12-15 2024-06-19 3db Access AG Dispositif uwb avec antenne à deux ports

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Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITRM20100391A1 (it) * 2010-07-15 2012-01-16 Clu Tech Srl Antenna stampata miniaturizzata con carichi reattivi combinati
EP2625744A1 (fr) * 2010-10-05 2013-08-14 Laird Technologies, Inc. Antennes multi-bandes à bande large
EP2625744A4 (fr) * 2010-10-05 2014-03-05 Laird Technologies Inc Antennes multi-bandes à bande large
US9070966B2 (en) 2010-10-05 2015-06-30 Laird Technologies, Inc. Multi-band, wide-band antennas
EP2950391B1 (fr) * 2013-01-24 2018-09-05 Noise Laboratory Co. Ltd. Antenne
CN105071035B (zh) * 2015-09-06 2018-03-13 哈尔滨工业大学 兼容wlan系统的超宽带天线
CN105071035A (zh) * 2015-09-06 2015-11-18 哈尔滨工业大学 兼容wlan系统的超宽带天线
CN105186134A (zh) * 2015-09-06 2015-12-23 哈尔滨工业大学 超宽带天线
CN108701903A (zh) * 2015-12-01 2018-10-23 瑞士电信公司 双偏振平面超宽带天线
US11996639B2 (en) 2015-12-01 2024-05-28 Swisscom Ag Dual-polarized planar ultra-wideband antenna
WO2017093312A1 (fr) * 2015-12-01 2017-06-08 Swisscom Ag Antenne à bande ultra large plane bipolarisée
EP3176873A1 (fr) * 2015-12-01 2017-06-07 Swisscom AG Antenne planaire à bande ultralarge et double polarisation
US20180358707A1 (en) * 2015-12-01 2018-12-13 Swisscom Ag Dual-polarized planar ultra-wideband antenna
US11024974B2 (en) * 2015-12-01 2021-06-01 Swisscom Ag Dual-polarized planar ultra-wideband antenna
CN108701903B (zh) * 2015-12-01 2021-06-04 瑞士电信公司 双偏振平面超宽带天线
US11641062B2 (en) 2015-12-01 2023-05-02 Swisscom Ag Dual-polarized planar ultra-wideband antenna
WO2018126371A1 (fr) * 2017-01-05 2018-07-12 周丹 Détecteur de fond de trou
WO2018126386A1 (fr) * 2017-01-05 2018-07-12 周丹 Détecteur de fond de trou
WO2020007746A1 (fr) * 2018-07-02 2020-01-09 Agc Glass Europe Vitrage à antenne de véhicule
US12046797B2 (en) 2018-07-02 2024-07-23 Agc Glass Europe Vehicle antenna glazing
US12009915B2 (en) 2021-01-29 2024-06-11 Eagle Technology, Llc Compact receiver system with antijam and antispoof capability
US11502414B2 (en) 2021-01-29 2022-11-15 Eagle Technology, Llc Microstrip patch antenna system having adjustable radiation pattern shapes and related method
CN113178696A (zh) * 2021-03-30 2021-07-27 普联国际有限公司 一种天线及天线设备
EP4386984A1 (fr) * 2022-12-15 2024-06-19 3db Access AG Dispositif uwb avec antenne à deux ports
WO2024125862A1 (fr) 2022-12-15 2024-06-20 Infineon Technologies Switzerland Ag Dispositif à bande ultra-large à antenne à deux ports

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