A glass window including an antenna, a manufacturing method thereof, and uses thereof

Abstract

The present invention relates to a glass window (10), comprising: a glass window material layer (11); an antenna (1) at least partially deployed on the glass window material layer (11), including a feeding point (3) at one end thereof for connection to an external circuit (20); an electronic device (2) positioned on or near the glass window (10) for transmitting a frequency (F); and a counter-antenna (5) for at least partially canceling the frequency (F), the counter-antenna (5) being connected to the antenna (1) by a bridge (6) and extending backward parallel to the antenna (1) towards the feeding point (3) to an end (7).

Description

Field of the Invention

[0001] The present invention relates to a glazing having an antenna and a method of manufacturing such glazing. The present invention solves problems caused by interference from electronic devices. Background Art

[0002] Glazings having antennas for receiving or transmitting electromagnetic waves are known. Such glazings in vehicles have antennas for radio (AM, FM), mobile network "Long Term Evolution" (LTE), digital audio broadcasting (DAB), television (TV), digital video broadcasting - terrestrial (DVB - t), telephone (GSM), navigation (GPS), WLAN, remote keyless entry (RKE), vehicle - to - vehicle communication and vehicle - to - infrastructure communication (car2X) and paging systems. Due to electromagnetic interference (EMI) emitted by electronic devices (their antennas or other conductors) located on or at any other location, the antennas on the glazing may perform poorly.

[0003] WO2011077142A1 (Paulus) discloses a laminated vehicle glazing having a conductive panel defining a slot antenna and a device for emitting electromagnetic radiation. Wires or conductive prints that are electrically connected or capacitively coupled to the conductive panel and at least partially surround the device are used to reduce EMI at the slot antenna.

[0004] WO2014087142A1 (Baranski) discloses two antennas in a glazing, each antenna being connected to a coupling electrode and arranged such that an alternating current coupling occurs between the coupling electrodes. Insulation is used to avoid an undesired direct current contact between the coupling electrodes and other conductors.

[0005] EP3534457A1 (Nagata) discloses a window glass near which an electronic device will be deployed, the window glass including an antenna on a glass plate and a linear canceller also on the glass plate to suppress noise received by the antenna from the electronic device.

[0006] An object of the present invention is to provide a glazing having an antenna with reduced unwanted interference from other antennas or electronic devices. Another object is to provide a method of manufacturing such glazing. Summary of the Invention

[0007] In a first aspect according to claim 1, the present invention provides a glass window, which comprises: a glass window material layer; an antenna at least partially deployed on the glass window material layer, the antenna including a feeding point at one end thereof for connection to an external circuit; an electronic device positioned on or near the glass window for transmitting a frequency (F); a counter-antenna for at least partially eliminating the frequency (F), the counter-antenna being connected to the antenna through a bridge and extending parallel to the antenna backward toward the feeding point to an end.

[0008] Preferably, the length (A) from the bridge to the end divided by the first shortening factor (K1) of the counter-antenna is an odd multiple of a quarter wavelength of the frequency (F) in free space + / - 25%.

[0009] Preferably, the electronic device is a second antenna having a length (A') and a feeding point, wherein the length (A') divided by the second shortening factor (K2) of the second antenna is an odd multiple of a quarter wavelength of the frequency (F) in free space + / - 25%.

[0010] Preferably, the distance (B) from the feeding point to the end divided by the third shortening factor (K3) between the feeding point and the end is a multiple of a half wavelength of the frequency (F) in free space + / - 25%.

[0011] The first, second or third shortening factor (K1, K2, K3) of the laminated glass is generally 0.6, and is generally 0.7 for monolithic tempered glass.

[0012] Preferably, the counter-antenna is a filter for eliminating interference at the frequency (F) from the second antenna, or a plurality of counter-antennas (5) are a plurality of filters for eliminating interference at a plurality of frequencies (F) from a plurality of electronic devices (2).

[0013] In an embodiment, the length (A) is 300 to 500 mm, preferably 360 to 450 mm for the anti-FM function. In another embodiment, preferably, the length (A) is 50 to 70 mm, more preferably 60 to 65 mm for the anti-LTE function.

[0014] In an embodiment, the gap (G) between the antenna and the counter-antenna is 20 to 40 mm, preferably 28 to 32 mm for the anti-FM function; or the gap (G) between the antenna and the counter-antenna is 1 to 6 mm, preferably 3 to 4 mm for the anti-LTE function.

[0015] Preferably, the antenna further includes a connector extending from the feeding point to a connection point on the first glass window material layer.

[0016] Preferably, the connector is a flat cable, and the counter-antenna and the bridge are configured on the flat cable.

[0017] Preferably, the external circuit includes an amplifier connected to the feed point and positioned on or near the glass window.

[0018] Preferably, the second antenna is arranged in the vehicle bumper or roof.

[0019] Preferably, the first glass window material layer is tempered glass.

[0020] Preferably, the glass window further includes a second glass window material layer joined to the first glass window material layer through an intermediate layer material layer to form laminated glass.

[0021] The glass window can have any suitable shape, such as trapezoidal, rectangular or triangular. The thickness of the glass window including all glass window materials, intermediate layer materials and conductors can be any thickness, such as 2.5 mm to 10.6 mm, preferably 2.6 mm to 3.8 mm, more preferably 2.7 mm to 3.2 mm. The glass window material can be any suitable material, such as soda-lime-silica glass or borosilicate glass. Preferably, the counter-antenna, bridge and antenna are copper wires with a diameter of 0.05 to 0.15 mm, or silver prints with a thickness of 0.1 - 2 mm. The bridge and antenna can be electrically connected or connected through capacitive coupling.

[0022] The first and second glass plates can be formed by the float process and can be annealed. The glass plates can be heat-strengthened or tempered. In the laminated glass, the first glass plate can be the inner layer of the glass window material, and the second glass plate can be the outer layer of the glass window material, or vice versa.

[0023] The glass window can include one or more layers of intermediate layer materials, such as polyvinyl butyral (PVB), which is advantageous because it exhibits good adhesion after being laminated to the glass. The intermediate layer material can have any thickness, such as 0.76 mm.

[0024] In a second aspect according to claim 14, the present invention provides a method of manufacturing a glass window, comprising the steps of: providing a glass window material layer; at least partially deploying an antenna on the glass window material layer, the antenna including a feed point at an end of the antenna for connection to an external circuit; positioning an electronic device on or near the glass window for transmitting a frequency (F); providing a counter-antenna for at least partially canceling the frequency (F), the counter-antenna being connected to the antenna through a bridge and extending parallel to the antenna backward towards the feed point to an end.

[0025] In a third aspect according to claim 15, the present invention provides the use of the glass window as a window in a building or vehicle, as a windshield, side window, rear window or roof window.

[0026] Effects of the present invention

[0027] The present invention provides a glass window having an antenna at least partially deployed on the glass window, and a counter-antenna for at least partially eliminating a frequency (F) caused by an electronic device on or near the glass window. The present invention is highly advantageous because the signal at the feeding point of the antenna is filtered by the counter-antenna to eliminate interference, thereby improving the signal-to-noise ratio of an external circuit connected to the feeding point.

[0028] The prior art does not disclose a counter-antenna that extends from a bridge parallel to the antenna backward toward the feeding point to an end. The bridge connects the counter-antenna to a bifurcation point on the antenna. Extending backward toward the feeding point overcomes the technical prejudice that the end of the antenna is far from the feeding point. Surprisingly, the present invention provides an antenna having two ends, one end close to the feeding point as part of the counter-antenna for eliminating the frequency (F), and the other end far from the feeding point for receiving other frequencies.

[0029] The present invention provides a method of manufacturing a glass window, which has the surprising step of extending the counter-antenna backward toward the feeding point to eliminate the frequency (F). This method avoids the step of providing alternative signal processing components at the feeding point or in the external circuit.

[0030] The use of the glass window according to the present invention in buildings and vehicles is advantageous because a standard external circuit, such as an amplifier, can be connected to the feeding point, and only less signal processing work is required to suppress electromagnetic interference from other electronic devices in use. Description of the Drawings

[0031] Figure 1 is a plan view of a glass window according to the present invention, which has an antenna and a counter-antenna on the glass window and an electronic device near the glass window.

[0032] Figure 2 is a plan view of a glass window according to the present invention, which has an antenna partially on the glass window and partially on a connector, wherein the counter-antenna is on the connector.

[0033] Figure 3 is similar to Figure 2 a plan view of a glass window according to the present invention, wherein the counter-antenna is on the glass window.

[0034] Figure 4 is similar to Figure 3 a plan view of a glass window according to the present invention, wherein the electronic device is a second antenna on the glass window.

[0035] Figure 5A and Figure 5B show a similar to Figures 1 to 4Cross-section of a window glass according to the invention, wherein the window glass is laminated glass.

[0036] Figure 6 is similar to Figures 1 to 4 Cross-section of a window glass according to the invention, wherein the window glass is single-pane glass.

[0037] Figure 7 is similar to Figure 4 Plan view of a window glass according to the invention, wherein the antenna and the second antenna have a complex shape.

[0038] Figure 8 Graph showing the relationship between the radiation efficiency (dB) and the frequency (GHz) of the comparative example (C-Ex) and an embodiment of the invention with a 3 mm gap (G).

[0039] Figure 9 Graph showing the relationship between the radiation efficiency (dB) and the frequency (GHz) of three embodiments of the invention with gaps (G) of 3 mm, 2 mm, and 1 mm, respectively.

[0040] Figure 10 Graph showing the relationship between the radiation efficiency (dB) and the frequency (GHz) of an embodiment of the invention with a length of 100 mm.

[0041] Figure 11 Graph showing the relationship between the radiation efficiency (dB) and the frequency (GHz) of an embodiment of the invention with a length of 80 mm.

[0042] Figure 12 Graph showing the relationship between the radiation efficiency (dB) and the frequency (GHz) of an embodiment of the invention with a length of 60 mm.

[0043] Figure 13 Graph showing the relationship between the radiation efficiency (dB) and the frequency (GHz) of an embodiment of the invention with a length of 40 mm.

[0044] Figure 14 Graph showing the relationship between the radiation efficiency (dB) and the frequency (GHz) of four embodiments of the invention with inverted antenna lengths of 100 mm, 80 mm, 60 mm, and 40 mm, respectively, as Figure 10 , Figure 11 , Figure 12 and Figure 13 are respectively shown in.

[0045] Figure 15 is similar to Figure 2 Plan view of a window glass according to the invention, wherein the inverted antenna has a complex shape. Detailed Description

[0046] The following is a description of the present invention with reference to the accompanying drawings, in which like reference numerals are used. Embodiments of the present invention are described as non-limiting examples.

[0047] Figure 1 A window glass (10) is disclosed, which includes a window glass material layer (11). An antenna (1) is deployed on the window glass material layer (11) and includes a feeding point (3) at one end for connection to an external circuit (20). An electronic device (2) is positioned on or near the window glass (10) for emitting a frequency (F). A counter-antenna (5) for at least partially canceling the frequency (F) is connected to the antenna (1) through a bridge (6) and extends parallel to the antenna (1) backward toward the feeding point (3) to an end (7).

[0048] The counter-antenna (5) has a length (A) from the bridge (6) to the end (7). A distance (B) is from the end (7) to the feeding point (3). A gap (G) is between the antenna (1) and the counter-antenna (5). The electronic device (2) can be a second antenna (2) having a second feeding point (4) and a length (A'). The electronic device (2) can be on a part of a building or on a part of a vehicle (such as a bumper or a roof).

[0049] The counter-antenna (5) can have a length (A) from the bridge (6) to the end (7), and the length (A) divided by a first shortening factor (K1) of the counter-antenna (5) is an odd multiple of a quarter wavelength in free space of the frequency (F) + / - 25%.

[0050] The second antenna (2) can have a length (A') and a feeding point (4), where the length (A') divided by a second shortening factor (K2) of the second antenna (2) is an odd multiple of a quarter wavelength in free space of the frequency (F) + / - 25%.

[0051] The distance (B) from the feeding point (3) to the end (7) divided by a third shortening factor (K3) between the feeding point (3) and the end (7) is a multiple of a half wavelength in free space of the frequency (F) + / - 25%.

[0052] Figure 2 Disclosed is similar to Figure 1A glass window (10), wherein the difference lies in that the antenna (1) is partially deployed on the glass window material layer (11) and partially deployed on the connector (8). The connection point (9) is used to connect a part of the antenna (1) on the connector (8) to a part of the antenna (1) on the glass window material layer (11). The feeding point (3) is on the connector (8) and is connected to the external circuit (20), and the external circuit (20) can be on the window frame of a building or on the body of a vehicle. The anti-antenna (5) for at least partially eliminating the frequency (F) is positioned on the connector (8), and is connected to the antenna (1) through the bridge (6) and extends parallel to the antenna (1) backward towards the feeding point (3) to the end (7).

[0053] Figure 3 A glass window (10) similar to Figure 2 is disclosed, wherein the difference lies in that the anti-antenna (5) for at least partially eliminating the frequency (F) is positioned on the glass window material layer (11), and is connected to the antenna (1) through the bridge (6) and extends parallel to the antenna (1) backward towards the feeding point (3) to the end (7).

[0054] Figure 4 A glass window (10) similar to Figure 3 is disclosed, wherein the difference lies in that the electronic device (2) is a second antenna (2) and is positioned on the glass window (10). In this embodiment, the shortening factors (K1, K2) of the antenna (1) and the second antenna (2) are similar, so the lengths (A, A') are also similar.

[0055] Figure 5A A glass window (10) similar to Figure 4 is disclosed, and the cross-section along the line X-X, wherein the first glass window material layer (11) is joined to the second glass window material layer (12) through the intermediate layer material layer (13) to form laminated glass, and the antenna (1) is an embedded wire. Figure 5B Similar to Figure 5A , but the antenna (1) is printed on the surface 4, numbered from the outside.

[0056] Figure 6 A glass window (10) similar to Figure 4 is disclosed, and the cross-section along the line X-X, wherein the first glass window material layer (11) is single-piece (single-layer) tempered glass.

[0057] Figure 7 A glass window (10) similar to Figure 4 is disclosed, wherein the difference lies in that the antenna (1) and the second antenna (2) have complex shapes.

[0058] For example, the antenna (1) can extend away from the feeding point (3) via multiple inflection points. Figure 7Three inflection points are shown: the connection point (9), the point between the connection point (9) and the end (7) of the counter-antenna (5), and the forking point where the bridge (6) is connected to the antenna (1).

[0059] Example 1 and Comparative Example

[0060] The following is a description of examples of the present invention. The present invention is not limited thereto. Comparative examples are also described.

[0061] Figure 8 The radiation performance of Comparative Example (C-Ex) of a glass window (10) having a monopole antenna (1) and Example 1 additionally having a counter-antenna (5) and a 3 mm gap (G) according to the present invention is shown.

[0062] The antenna (1) has a length equal to 0.725 m in free space. For Comparative Example (C-Ex) and Example 1, the lowest frequency at which peak radiation efficiency occurs is when the length is one-quarter wavelength, i.e., a wavelength of 2.900 m and a frequency of 103 MHz, i.e., FM radio.

[0063] For Comparative Example (C-Ex), a similar peak radiation efficiency also occurs at a harmonic frequency of approximately 720 MHz. The harmonic frequency peak is undesirable because LTE signals transmitted by an electronic device (2) (e.g., a mobile phone antenna) are received as interference at the feed point (3) of the antenna (1). The LTE band is nominally 700 MHz; the user equipment transmits from 703 to 748 MHz and receives from 758 to 803 MHz.

[0064] Example 1 includes a counter-antenna (5) having a length (A) equal to 0.100 m in free space. The lowest frequency at which resonance occurs in the counter-antenna (5) is when the length (A) is one-quarter wavelength, i.e., a wavelength of 0.400 m and a frequency of 750 MHz.

[0065] The counter-antenna (5) positioned near the antenna (1) and separated from the antenna (1) by a 3 mm gap (G) causes a peak attenuation of the radiation efficiency of -22 dB at 720 MHz. The attenuation occurs from 630 to 810 MHz, i.e., the filter bandwidth is 180 MHz.

[0066] Examples 2 and 3

[0067] Figure 9 The radiation efficiencies (dB) of Example 1, Example 2, and Example 3 having gaps (G) of 3 mm, 2 mm, and 1 mm respectively are disclosed.

[0068] As the gap (G) becomes narrower, the attenuation becomes stronger. Example 3 having a 1 mm gap (G) results in a reduction of the radiation efficiency to -29 dB.

[0069] As the gap (G) becomes narrower, attenuation occurs in a smaller frequency range. In Example 3, attenuation occurs between 690 and 810 MHz, i.e., the filter bandwidth is 120 MHz.

[0070] Due to the narrow bandwidth, the anti-antenna (5) has no effect on FM / DAB / TV.

[0071] Examples 4, 5, 6 and 7

[0072] A set of four examples uses a glass window material layer (11) with a thickness of 3.15 mm and an antenna (1) deposited as a silver print with a thickness of 0.01 mm, a width of 1 mm, and a length of 0.7 m. The anti-antenna (5) is deployed parallel to it, and the gap (G) is 10 mm.

[0073] Figure 10 、 Figure 11 、 Figure 12 and Figure 13 Examples 4, 5, 6, and 7 are respectively disclosed, where the anti-antenna lengths (A) are 100 mm, 80 mm, 60 mm, and 40 mm respectively.

[0074] Figure 14 Four examples are shown together to assist in selecting the length (A) suitable for a predetermined frequency (F) to be filtered. For example, the digital TV band is nominally 800 MHz, but user equipment receives between 791 and 821 MHz. To attenuate interference from digital TV, the anti-antenna length (A) should be selected as 40 mm to achieve an attenuation of -15 dB.

[0075] After selecting 40 mm (Example 7), Figure 13 separate graphs confirm that the anti-antenna has no effect on FM radio (88 to 108 MHz) or DAB (174 to 240 MHz).

[0076] If TV transmission in the range of 750 to 800 MHz is required, then an anti-antenna length (A) of approximately 50 mm can be inferred from Figure 14 between 60 mm (590 to 720 MHz, Example 6) and 40 mm (760 to 1,000 MHz, Example 7).

[0077] The length (A) depends on the dielectric factor of the glass window material layer (11) or the connector (8) of the substrate acting as the counter-antenna (5). To fabricate a sample, for tempered glass, the first shortening factor (K1) can be estimated as 0.7, for laminated glass as 0.6, or for coated glass with laser-etched lines as 0.5. The sample should be tested in an anechoic chamber to measure the actual filtered frequency. To fabricate a prototype, the actual filtered frequency should be compared with the predetermined frequency (F) and the length (A), and the length (A) is shortened or extended according to the corrected estimate of the first shortening factor (K1). Similar estimations and tests can be used for the length (A'), distance (B), and corresponding second and third shortening factors (K2, K3) of the second antenna (2).

[0078] Example 8

[0079] Example 8 is a laminated glass window (10) as shown in Figure 1 . The distance (B) from the end (7) to the feed point (3) divided by the third shortening factor (K3) is n times the half-wavelength of the frequency (F) + / - 25% in free space, where n is any integer (0, 1, 2...). To attenuate the LTE signal, the distance (B) is 125 mm, divided by 0.6 is 208 mm, and the full wavelength is 0.416 m, which is a frequency of 720 MHz.

[0080] Multiple anti-antennas

[0081] Multiple counter-antennae (5) can be provided on the antenna (1), each having a length (A1, A2, etc.) to cancel the predetermined frequencies (F1, F2, etc.). This is useful for filtering multiple unwanted frequencies at the feed point (3) to the amplifier (20).

[0082] Anti-antennas with complex shapes

[0083] Figure 15 There is disclosed a glass window similar to Figure 2 , except that the counter-antenna (5) has a complex shape corresponding to the complex shape of the antenna (1).

[0084] WO2017194961A1 (Baranski), incorporated by reference, discloses a glass window in which the antenna has multiple inflection points forming a complex shape on the connector.

[0085] In Figure 15 , the antenna (1) includes a connector (8) extending from the feed point (3) to a connection point (9) on the first glass window material layer (11). According to the present invention, a counter-antenna (5) having inflection points corresponding to the inflection points of the antenna (1) is positioned on the connector (8).

[0086] The total length of the anti-antenna (5) with a complex shape is the sum of components (such as two components having lengths A1 and A2). The length A1 is from the bridge (6) to the inflection point. The length A2 is from the inflection point to the end (7) of the anti-antenna (5). The inflection point refers to the bend between two straight sections.

[0087] Keywords of the drawings

[0088] 1: Antenna

[0089] 2: Electronic device

[0090] 3: Feed point of the antenna

[0091] 4: Feed point of the electronic device

[0092] 5: Anti-antenna

[0093] 6: Bridge

[0094] 7: End of the anti-antenna

[0095] 8: Connector

[0096] 9: Connection point

[0097] 10: Glass window

[0098] 11, 12: First and second glass window material layers

[0099] 13: Intermediate layer material layer

[0100] 15: Frame

[0101] 20: External circuit

[0102] A: Length of the anti-antenna; A1, A2: Lengths of the components; A': Length of the electronic device

[0103] B: Distance from the feed point to the end of the anti-antenna

[0104] F: Frequency emitted by the electronic device

[0105] G: Gap between the antenna and the anti-antenna

[0106] K1, K2, K3: First, second, and third shortening factors

Claims

1. A glass window (10), comprising: - A first glass window material layer (11), - An antenna (1) at least partially deployed on the first glass window material layer (11), including a first feed point (3) at one end thereof for connection to an external circuit (20), - An electronic device (2), positioned on or near the glass window (10), for transmitting a frequency (F), - A counter-antenna (5) for at least partially eliminating the frequency (F), the counter-antenna (5) being connected to the antenna (1) by a bridge (6) and extending parallel to the antenna (1) backward toward the first feed point (3) to an end (7), - Wherein the counter-antenna (5) is a filter for eliminating interference at the frequency (F) from the electronic device (2).

2. The glass window (10) according to claim 1, wherein the first length (A) from the bridge (6) to the end (7) divided by the first shortening factor (K1) of the counter-antenna (5) is an odd multiple of a quarter wavelength in free space of the frequency (F) + / - 25%.

3. The glass window (10) according to claim 1, wherein the electronic device (2) is a second antenna having a second length (A') and a second feed point (4), and wherein the second length (A') divided by the second shortening factor (K2) of the second antenna (2) is an odd multiple of a quarter wavelength in free space of the frequency (F) + / - 25%.

4. The glass window (10) according to any one of claims 1-3, wherein the distance (B) from the first feed point (3) to the end (7) divided by the third shortening factor (K3) between the first feed point (3) and the end (7) is a multiple of a half wavelength in free space of the frequency (F) + / - 25%.

5. The glass window (10) according to any one of claims 1-3, wherein a plurality of counter-antennas (5) are a plurality of filters for eliminating interference at a plurality of frequencies (F) from a plurality of electronic devices (2).

6. The glass window (10) according to claim 2, wherein the first length (A) is 300 to 500 mm, or 50 to 70 mm.

7. The glass window (10) according to claim 6, wherein the first length (A) is 360 to 450 mm for an anti-FM function.

8. The glass window (10) according to claim 6, wherein the first length (A) is 60 to 65 mm for an anti-LTE function.

9. The glass window according to any one of claims 1-3, wherein the gap (G) between the antenna and the counter-antenna is 20 to 40 mm; or the gap (G) between the antenna (1) and the counter-antenna (5) is 1 to 6 mm.

10. The glass window according to claim 9, wherein the gap (G) between the antenna and the counter-antenna is 3 to 4 mm for an anti-LTE function.

11. The glass window according to claim 9, wherein the gap (G) between the antenna and the counter-antenna is 28 to 32 mm for an anti-FM function.

12. The window glass according to any one of claims 1 - 3, wherein the antenna (1) further comprises a connector (8) extending from the first feeding point (3) to a connection point (9) on the first window glass material layer (11).

13. The window glass according to claim 12, wherein the connector (8) is a flat cable, and the counter - antenna (5) and the bridge (6) are arranged on the flat cable.

14. The window glass (10) according to any one of claims 1 - 3, wherein the external circuit (20) comprises an amplifier connected to the first feeding point (3) and positioned on or near the window glass (10).

15. The window glass (10) according to claim 3, wherein the second antenna (2) is arranged in a vehicle bumper or roof.

16. The window glass according to any one of claims 1 - 3, wherein the first window glass material layer (11) is tempered glass.

17. The window glass according to any one of claims 1 - 3, further comprising a second window glass material layer (12), which is joined to the first window glass material layer (11) through an intermediate layer material layer (13) to form laminated glass.

18. A method of manufacturing the window glass (10) according to claim 1, comprising the following steps: - providing a first window glass material layer (11); - deploying the antenna (1) at least partially on the first window glass material layer (11), the antenna (1) comprising: - a first feeding point (3) at an end of the antenna (1) for connection to an external circuit (20); - positioning an electronic device (2) on or near the window glass (10) for transmitting a frequency (F); characterized in that: - providing a counter - antenna (5) for at least partially eliminating the frequency (F), the counter - antenna (5) being connected to the antenna (1) through a bridge (6) and extending parallel to the antenna (1) backward towards the first feeding point (3) to an end (7).

19. Use of the window glass (10) according to claim 1 as a window in a building or vehicle.

20. Use of the window glass (10) according to claim 1 as a windshield, side window, rear window or roof window.

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