GB2532207A - Radio frequency communications devices - Google Patents
Radio frequency communications devices Download PDFInfo
- Publication number
- GB2532207A GB2532207A GB1419802.2A GB201419802A GB2532207A GB 2532207 A GB2532207 A GB 2532207A GB 201419802 A GB201419802 A GB 201419802A GB 2532207 A GB2532207 A GB 2532207A
- Authority
- GB
- United Kingdom
- Prior art keywords
- elements
- radio frequency
- antenna
- groups
- group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/2605—Array of radiating elements provided with a feedback control over the element weights, e.g. adaptive arrays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
Abstract
A radio mesh network communication device 4 comprises a data processing unit 40, which is operable to provide an encoded data stream, a data stream radio frequency modulator 42 and an antenna array 44. The antenna array 44 comprises a plurality of discrete antenna elements located on a substrate wherein the antenna elements are arranged in a plurality of groups which are spaced apart from one another in a first direction. At least two of the groups have a different number of antenna elements. The antenna elements in the antenna groups are arranged in a second direction which is perpendicular to that of the first direction. The number of elements used in the groups may be determined to provide a desired output profile. A symmetrical tapering function of (1 cos. Ɵ), with a base 2 quantisation, may be used in determining the antenna element distribution. Each of the groups of antenna elements may be supplied with the same drive signal or a different respective drive signal. The antenna array 44 may use a simple drive system, without the need for amplitude signal control, to achieve low signal side lobe levels. Low signal interference levels between such devices 4 may arise when used in a radio frequency communication mesh network system.
Description
RADIO FREQUENCY COMMUNICATIONS DEVICES
The present invention relates to radio frequency communications devices for radio communications systems.
BACKGROUND OF THE INVENTION
As is well known and understood, radio communications systems enable wireless communications using transmission of electromagnetic signals in the radio frequency (RF) spectrum of approximately 3kHz to 300GHz.
An important part of this RF spectrum is the millimetre-wave radio frequency band, from 30 to 300 GHz. A particularly useful practical portion of this range for communications purposes is a band around 60GHz. Communications in such this band are suited to short range (in the hundreds of meters range) applications, such as wireless backhaul applications for mobile communications (mobile telephony and data). In one such application, mobile communications base stations are connected to a core network using 60GHz band communications instead of optical fibre connections. Such systems are required to operate over typical ranges of 200m with a mesh of interconnecting nodes, also known as a mesh network. In such a mesh network, each node or device in the network is operable to communicate with at least one other device over a relatively short distance, and it is desirable to provide a device for use in a mesh network that is able to direct a transmission to a desired receiving device in order to avoid interference problems.
Radio communications systems use antennas for the transmission and reception of the electromagnetic signals. The use of phased array antennas is highly desirable to allow automatic installation, beam alignment and adaption in case of changes in the operating environment. A phased array antenna is an antenna device that includes a plurality of individual antenna elements arranged in a square or rectangular array. An exemplary phased array antenna 1 is illustrated in Figure 1 of the accompanying drawings. In such an example, a plurality (in this case twelve) antenna elements 11 are arranged on a substrate 10 in a rectangular array having four columns A, B, C and D. Each column has the same number of antenna elements (in this case, three), so that the resulting array of antenna elements is rectangular.
For transmission of an RF signal the antenna elements 11 of the phased array antenna 1 are coupled to drive circuits 12. The drive circuits 12 receive the RF signal to be transmitted and supply respective drive signals to the groups A, B, C and D of antenna elements 11.
Characteristics of the signals transmitted by each individual element are varied across the array in order to vary the pattern of the radiation transmitted from the array. For example, in current phased array antennas used in 60GHz applications, the relative phases of the transmitted signals are varied across the array. In one example, the phase variation is achieved by the routing of the drive signal from one element 11 to the next in a given group (using connections 14 and 15). Each element 11 introduces a delay for the drive signal, resulting in relative phase differences between the drive signals for each element in the group. All of the elements in the array are supplied with a drive signal during operation of such an antenna array. In order to provide a desired output signal profile, each antenna element is controlled as to the phase and amplitude of its output signal.
However, such existing designs have undesirably high sidelobe levels. A sidelobe is a peak of transmitted radiation that is directed in a direction away from the main desired transmission direction (the "main lobe") of the antenna. Low antenna sidelobe levels are important to reduce interference between wireless nodes and improve frequency re-use and, therefore, total traffic capacity in a network. Reduction in sidelobe levels in the previously-considered antenna design is not possible without the use of amplitude control in addition to phase control, which leads to increasingly complex drive circuitry.
It is, therefore, desirable to provide a phased array antenna that addresses the drawbacks of the previously-considered designs.
SUMMARY OF THE INVENTION
According to one aspect of the present invention, there is provided an radio frequency communications device for use in a mesh network, the device comprising a data processing unit operable to encode data for transmission to produce an encoded data stream, a radio frequency unit operable to receive an encoded data stream from the data processing unit, and to modulate such an encoded data stream to produce a modulated encoded data stream for transmission, and an antenna, connected to receive a modulated encoded data stream from the radio frequency unit, and operable to transmit such a modulated encoded data stream over an air interface, the antenna including a substrate, and a plurality of discrete antenna elements located on the substrate, wherein the antenna elements are arranged on the substrate in a plurality of groups, the groups being spaced apart from one another across the substrate in a first direction, and each group having one or more antenna elements therein, wherein the antenna elements for each group having a plurality of elements therein are arranged in a second direction substantially perpendicular to the first direction, and wherein at least two of the groups have different respective numbers of antenna elements therein.
In one example, in which each group of elements has a predetermined number of elements therein, the numbers of elements in the groups are determined by quantisation of a desired output profile from the antenna. The desired output profile may be represented by symmetrical tapering function, such as (1-cos(®)) where 8 ranges from 0 to 2u, and the quantisation may be base 2 quantisation.
In one example, the elements of each group having a plurality of elements are arranged on the substrate in a series. In such an example, respective first elements of the groups may be substantially aligned with one another in the second direction.
A device embodying the present invention may further comprise drive circuitry operable to provide a drive signal to each group of elements of the antenna. In such an example, for each group having a plurality of elements therein, each element in a group of elements may be operable to pass a received drive signal onto a next element in the group. The drive circuitry may be operable to supply substantially the same drive signal to each group of elements.
In one example, the antenna elements are distributed across the substrate so as to form a symmetrical pattern in the first direction, about a centre line which extends in the second direction.
In such an example, the antenna elements may also be distributed across the substrate so as to form a symmetrical pattern in the second direction, about a centre line which extends in the first direction.
A device embodying aspects of the present invention is able to provide enhanced performance by reducing the magnitude of transmitted sidelobes from the antenna. In one particular example, sidelobe magnitude can be decreased by 6dB.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a schematic view of a previously-considered phased array antenna; Figure 2 is a schematic view of a first example phased array antenna used in a radio frequency communications device embodying principles of the present invention; Figure 3 is a schematic view of a second example phased array antenna used in a radio frequency communications device embodying principles of the present invention; Figure 4 is a schematic view of a third example phased array antenna used in a radio frequency communications device embodying principles of the present invention; Figure 5 illustrates a radio frequency communications device embodying one aspect of the present invention, and Figures 6 and 7 illustrate a mesh network embodying another aspect of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Figure 2 of the accompanying drawings illustrates a first example antenna for use in a device embodying one aspect of the present invention. The antenna 2 comprises a substrate 20 on which a plurality of discrete antenna elements 21 are arranged. The antenna elements 21 are arranged in groups a, b, c, d, e, and f, and the groups are distributed across the substrate 10 in a first direction x. The groups a, b, c, d, e, and f have respective numbers of antenna elements therein, and at least two of the groups have different respective numbers of antenna elements therein. In the example of Figure 2, groups a and f have a single antenna element 21 each, groups b and d have two antenna elements 21 each and groups c and d have four antenna elements 21 each. It will be appreciated that the groups can have any number of antenna elements 21 therein.
The antenna elements 21 of each group are arranged linearly in a second direction y substantially perpendicular to the first direction x. In the example of Figure 2, the antenna elements 21 are arranged in each group in a linear series, with the first element in the series being substantially aligned in the second direction with the first element of each of the other series. In the example of Figure 2, the groups of antenna elements 21 are arranged so that the overall pattern of elements on the substrate is symmetrical about a centre line which extends in the second direction.
The antenna elements 21 of the Figure 2 arrangement are driven by drive circuits 22. In one example, each group of elements has an associated drive circuit 22. The drive circuit 22 supplies a drive signal to the associated group of elements, with the drive signal being passed along the series of elements in the group (for groups having a plurality of elements), such that the elements in the group receive phase shifted versions of the signal relative to the other elements in the group. The groups may be supplied with the same drive signal, or may be supplied with respective different drive signals.
It is to be noted that the distribution of the antenna elements on the substrate results in a desired output signal from the antenna without the need for amplitude control of the signals supplied to the individual antenna elements. As such, the drive circuitry is greatly simplified over previously-considered designs of antenna.
Figure 3 illustrates a second example antenna for use in a device embodying an aspect of the present invention. The antenna elements are arranged in groups (columns) 1 to 12, distributed across the substrate in a first direction. The groups have respective numbers of antenna elements therein, and at least two of the groups have different respective numbers of antenna elements therein.
In the example of Figure 3, each group comprises a number of antenna elements equal to a power of 2 (2°). In the example shown in Figure 3, groups 1 and 12 have 1 (2°) element each, groups 2 and 11 have 2 (21) elements each, groups 3, 4, 9 and 10 have 4 (22) elements each, and groups 5 to 8 have 8 (23) elements each.
The antenna elements of each group are again arranged linearly in a second direction substantially perpendicular to the first direction. In the example of Figure 3, the antenna elements are arranged in each group in a linear series, with the first element in the series being substantially aligned in the second direction with the first element of each of the other series.
In the example of Figure 3, the groups of antenna elements are arranged so that the overall pattern of elements on the substrate is symmetrical about a centre line which extends in the second direction. The distribution of the antenna elements results in a pattern mirrored about this centre line of the antenna.
The number of antenna elements in each group is determined by quantising (to the nearest power of two) a desired output signal profile for the antenna. In one example, the number of elements is determined by rounding up the result of the function (1 -cos (e)) to the nearest power of 2 (base 2 quantisation), where e is in the range 0 to 2rr. An example of the calculation for the example antenna of Figure 3 is shown below in Table 1.
Column No Angle Cos(Angle) 1-Cos(Angle) Elements Roundup Sub-Array Elements 0 0.261799 0.966 0.017 0.136297 1 1 1 0.785398 0.707 0.146 1.171573 2 2 2 1.308997 0.259 0.371 2.964724 3 4 3 1.832596 -0.259 0.629 5.035276 6 4 4 2.356194 -0.707 0.854 6.828427 7 8 2.879793 -0.966 0.983 7.863703 8 8 6 3.403392 -0.966 0.983 7.863703 8 8 7 3.926991 -0.707 0.854 6.828427 7 8 8 4.45059 -0.259 0.629 5.035276 6 4 9 4.974188 0.259 0.371 2.964724 3 4 5.497787 0.707 0.146 1.171573 2 2 11 6.021386 0.966 0.017 0.136297 1 1 The antenna elements of the Figure 3 arrangement are once again driven by drive circuits (not shown for the sake of clarity). In one example, each group of elements has an associated drive circuit. Each drive circuit supplies a drive signal to the associated group of elements, with the drive signal being passed along the series of elements in the group, such that the elements in the group receive phase shifted versions of the signal relative to the other elements in the group. The groups may be supplied with the same drive signal, or may be supplied with respective different drive signals.
It is to be noted that the distribution of the antenna elements on the substrate results in a desired output signal from the antenna without the need for amplitude control of the signals supplied to the individual antenna elements. As such, the drive circuitry is greatly simplified over previously-considered designs of antenna.
Figure 4 illustrates a third example antenna 3 for use in a device embodying an aspect of the present invention. As in the example of Figures 2 and 3, the antenna 3 comprises a substrate 30 on which a plurality of discrete antenna elements 31 are arranged. The antenna elements 31 are arranged in groups a', b', c', d', e', and f', distributed across the substrate 30 in a first direction x. The groups have respective numbers of antenna elements therein, and at least two of the groups have different respective numbers of antenna elements therein.
In the example of Figure 4, groups a' and f' have two antenna elements 21 each, and groups b', c', d' and e' have four antenna elements 21 each. The antenna elements 31 of each group are again arranged linearly in a second direction y substantially perpendicular to the first direction x. In the example of Figure 4, the antenna elements 31 are arranged in each group in a linear series. The overall pattern of elements 31 on the substrate 30 is symmetrical about a centre line which extends in the second direction y, as before. In addition, the pattern of elements 31 is also symmetrical about a second centre line which extends in the first direction x.
The groups of elements 31 can be understood as being comprised of respective pairs of subgroups of elements 31. Each sub group receives a drive signal from drive circuitry (not shown for the sake of clarity, via a drive connection 32. This drive signal is passed from one element 31 to another in the sub group (for those subgroups having a plurality of elements 31). The drive signal received by each individual element is a phase shifted, with respect to the other elements in the group, version of the drive signal. There is no amplitude control required for each individual element in the array, however, as the arrangement of elements on the substrate enables an RF signal with a desired low sidelobe profile to be transmitted from the antenna.
By way of example, a previously considered antenna arrangement, such as that shown in Figure 1, can have a scan angle of +/-60deg, with sidelobes of -8.9dB. Using an antenna embodying an aspect of the present invention, a scan angle of +/-45deg and sidelobes of - 15.2dB can be achieved.
Figure 5 is a schematic illustration of a radio frequency communications device embodying an aspect of the present invention, and including an antenna, such as one of those described above in and shown in Figure 2 to 4. Such a device 4 includes a data processing unit 40 that is operable to receive data for transmission and to encode that data to produce and encoded data stream. The data may be encoded using any desired coding scheme, such as a low density parity check (LDPC) coding scheme.
The device 4 includes a radio frequency unit 42 which receives the encoded data stream from the data processing unit 40, and which is operable to modulate that data stream for transmission over a radio frequency channel. The radio frequency channel is preferably a channel in the 60GHz transmission band, and the modulation scheme can be any appropriate scheme. Possible modulation schemes include binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), orthogonal frequency division multiplexing (OFDM), and quadrature amplitude modulation (QAM), and appropriate combination thereof.
The modulated encoded data signal is supplied by the radio frequency unit 42 to an antenna 44 for transmission across an air interface 46. The antenna 44 is an antenna as described with reference to Figures 2 to 4, and provides the transmission with desirably low sidelobe levels.
It will be readily appreciated that Figure 5 shows only the transmission elements of a communication device, and that the device will be operable to receive modulated encoded data, and to demodulate and decode that data.
Figure 6 illustrates a mesh network embodying another aspect of the present invention, which includes devices embodying the first aspect of the present invention. The mesh network includes a plurality of network nodes arranged to communicate with adjacent nodes of the network. In the example shown in Figure 6, the nodes are arranged in a rectilinear pattern, although it will be readily appreciated that the nodes may be arranged in any pattern. In the example of Figure 5, each node is illustrated as being able to communicate on four channels f1, f2, f3, and f4, and these channels are directed to specific adjacent nodes in the network.
Figure 7 illustrates the mesh network of Figure 6 in use. In the example case shown, node N7 communicates directly with node N11 on the first channel fl. This communication is labelled S7_11 in Figure 7, and represents the desired communication between nodes N7 and N11. Other first channel f1 communications are shown in Figure 7, and three of these, in the example shown, may interfere with the communication from node N7 to node N11, due to sidelobe transmissions. These sidelobe transmissions are indicated as interference transmissions. A transmission from node N2 to node N3 on channel fl can produce a sidelobe interference signal 12_11 at node N11. Similarly, transmissions from nodes N4 and N5 can produce sidelobe interference signals 14_11 and 15_11 at node N11.
A device which includes an antenna as described above with reference to Figures 2 to 4 enables reduced sidelobe transmission magnitude, and so reduces the magnitude of the interference signals received by node N11 from nodes N2, N4 and N5. Such reductions in sidelobe signal magnitude increases the signal to interference ratio (SIR) at node N11.
It will be appreciated that the mesh network of Figures 6 and 7 is merely an example to illustrate the principles of interference signals, and how reducing sidelobe signal magnitude can enhance the SIR at the receiving node. Using devices that embody the first aspect of the present invention allows for greater flexibility in positioning of nodes of the mesh network.
Claims (14)
- CLAIMS: 1. A radio frequency communications device for use in a mesh network, the device comprising: a data processing unit operable to encode data for transmission to produce an encoded data stream; a radio frequency unit operable to receive an encoded data stream from the data processing unit, and to modulate such an encoded data stream to produce a modulated encoded data stream for transmission; and an antenna, connected to receive a modulated encoded data stream from the radio frequency unit, and operable to transmit such a modulated encoded data stream over an air interface, the antenna including a substrate, and a plurality of discrete antenna elements located on the substrate, wherein the antenna elements are arranged on the substrate in a plurality of groups, the groups being spaced apart from one another across the substrate in a first direction, and each group having one or more antenna elements therein, wherein the antenna elements for each group having a plurality of elements therein are arranged in a second direction substantially perpendicular to the first direction, and wherein at least two of the groups have different respective numbers of antenna elements therein.
- 2.
- 3.
- 4.
- 5.A radio frequency communications device as claimed in claim 1, in which each group of elements has a predetermined number of elements therein, wherein the numbers of elements in the groups are determined by quantisation of a desired output profile from the antenna.A radio frequency communications device as claimed in claim 2, wherein the desired output profile is represented by symmetrical tapering function.A radio frequency communications device as claimed in claim 3, wherein the symmetrical tapering function is (1-cos(8)) where e ranges from 0 to 27, and the quantisation is base 2 quantisation.A radio frequency communications device as claimed in any one of the preceding claims, wherein the elements of each group having a plurality of elements are arranged on the substrate in a series.
- 6. A radio frequency communications device as claimed in claim 5, wherein respective first elements of the groups are substantially aligned with one another in the second direction.
- 7. A radio frequency communications device as claimed in any one of the preceding claims, further comprising drive circuitry operable to provide a drive signal to each group of elements.
- 8. A radio frequency communications device as claimed in claim 7, wherein, for each group having a plurality of elements therein, each element in a group of elements is operable to pass a received drive signal onto a next element in the group.
- 9. A radio frequency communications device as claimed in claim 7, wherein the drive circuitry is operable to supply substantially the same drive signal to each group of elements.
- 10. A radio frequency communications device as claimed in any one of the preceding claims, wherein the antenna elements are distributed across the substrate so as to form a symmetrical pattern in the first direction, about a centre line which extends in the second direction.
- 11. A radio frequency communications device as claimed in claim 10, wherein the antenna elements are distributed across the substrate so as to form a symmetrical pattern in the second direction, about a centre line which extends in the first direction.
- 12. A mesh communications network comprising a plurality of radio frequency devices, each as claimed in any one of the preceding claims, each such device being operable to transmit a modulated encoded data stream to at least one other device in the network.
- 13. A radio frequency communications device for use in a mesh network substantially as hereinbefore described with reference to, and as shown in, Figure 5 of the accompanying drawings.
- 14. A mesh network substantially as hereinbefore described with reference to, and as shown in, Figure 6 and 7 of the accompanying drawings.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1419802.2A GB2532207A (en) | 2014-11-06 | 2014-11-06 | Radio frequency communications devices |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1419802.2A GB2532207A (en) | 2014-11-06 | 2014-11-06 | Radio frequency communications devices |
Publications (2)
Publication Number | Publication Date |
---|---|
GB201419802D0 GB201419802D0 (en) | 2014-12-24 |
GB2532207A true GB2532207A (en) | 2016-05-18 |
Family
ID=52118108
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1419802.2A Withdrawn GB2532207A (en) | 2014-11-06 | 2014-11-06 | Radio frequency communications devices |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2532207A (en) |
Cited By (116)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9674711B2 (en) | 2013-11-06 | 2017-06-06 | At&T Intellectual Property I, L.P. | Surface-wave communications and methods thereof |
US9685992B2 (en) | 2014-10-03 | 2017-06-20 | At&T Intellectual Property I, L.P. | Circuit panel network and methods thereof |
US9705610B2 (en) | 2014-10-21 | 2017-07-11 | At&T Intellectual Property I, L.P. | Transmission device with impairment compensation and methods for use therewith |
US9705561B2 (en) | 2015-04-24 | 2017-07-11 | At&T Intellectual Property I, L.P. | Directional coupling device and methods for use therewith |
US9729197B2 (en) | 2015-10-01 | 2017-08-08 | At&T Intellectual Property I, L.P. | Method and apparatus for communicating network management traffic over a network |
US9735833B2 (en) | 2015-07-31 | 2017-08-15 | At&T Intellectual Property I, L.P. | Method and apparatus for communications management in a neighborhood network |
US9742462B2 (en) | 2014-12-04 | 2017-08-22 | At&T Intellectual Property I, L.P. | Transmission medium and communication interfaces and methods for use therewith |
US9742521B2 (en) | 2014-11-20 | 2017-08-22 | At&T Intellectual Property I, L.P. | Transmission device with mode division multiplexing and methods for use therewith |
US9749053B2 (en) | 2015-07-23 | 2017-08-29 | At&T Intellectual Property I, L.P. | Node device, repeater and methods for use therewith |
US9748626B2 (en) | 2015-05-14 | 2017-08-29 | At&T Intellectual Property I, L.P. | Plurality of cables having different cross-sectional shapes which are bundled together to form a transmission medium |
US9749013B2 (en) | 2015-03-17 | 2017-08-29 | At&T Intellectual Property I, L.P. | Method and apparatus for reducing attenuation of electromagnetic waves guided by a transmission medium |
US9769020B2 (en) | 2014-10-21 | 2017-09-19 | At&T Intellectual Property I, L.P. | Method and apparatus for responding to events affecting communications in a communication network |
US9768833B2 (en) | 2014-09-15 | 2017-09-19 | At&T Intellectual Property I, L.P. | Method and apparatus for sensing a condition in a transmission medium of electromagnetic waves |
US9769128B2 (en) | 2015-09-28 | 2017-09-19 | At&T Intellectual Property I, L.P. | Method and apparatus for encryption of communications over a network |
US9780834B2 (en) | 2014-10-21 | 2017-10-03 | At&T Intellectual Property I, L.P. | Method and apparatus for transmitting electromagnetic waves |
US9787412B2 (en) | 2015-06-25 | 2017-10-10 | At&T Intellectual Property I, L.P. | Methods and apparatus for inducing a fundamental wave mode on a transmission medium |
US9793955B2 (en) | 2015-04-24 | 2017-10-17 | At&T Intellectual Property I, Lp | Passive electrical coupling device and methods for use therewith |
US9793954B2 (en) | 2015-04-28 | 2017-10-17 | At&T Intellectual Property I, L.P. | Magnetic coupling device and methods for use therewith |
US9800327B2 (en) | 2014-11-20 | 2017-10-24 | At&T Intellectual Property I, L.P. | Apparatus for controlling operations of a communication device and methods thereof |
US9820146B2 (en) | 2015-06-12 | 2017-11-14 | At&T Intellectual Property I, L.P. | Method and apparatus for authentication and identity management of communicating devices |
US9838896B1 (en) | 2016-12-09 | 2017-12-05 | At&T Intellectual Property I, L.P. | Method and apparatus for assessing network coverage |
US9838078B2 (en) | 2015-07-31 | 2017-12-05 | At&T Intellectual Property I, L.P. | Method and apparatus for exchanging communication signals |
US9847566B2 (en) | 2015-07-14 | 2017-12-19 | At&T Intellectual Property I, L.P. | Method and apparatus for adjusting a field of a signal to mitigate interference |
US9847850B2 (en) | 2014-10-14 | 2017-12-19 | At&T Intellectual Property I, L.P. | Method and apparatus for adjusting a mode of communication in a communication network |
US9853342B2 (en) | 2015-07-14 | 2017-12-26 | At&T Intellectual Property I, L.P. | Dielectric transmission medium connector and methods for use therewith |
US9860075B1 (en) | 2016-08-26 | 2018-01-02 | At&T Intellectual Property I, L.P. | Method and communication node for broadband distribution |
US9865911B2 (en) | 2015-06-25 | 2018-01-09 | At&T Intellectual Property I, L.P. | Waveguide system for slot radiating first electromagnetic waves that are combined into a non-fundamental wave mode second electromagnetic wave on a transmission medium |
US9866309B2 (en) | 2015-06-03 | 2018-01-09 | At&T Intellectual Property I, Lp | Host node device and methods for use therewith |
US9866276B2 (en) | 2014-10-10 | 2018-01-09 | At&T Intellectual Property I, L.P. | Method and apparatus for arranging communication sessions in a communication system |
US9871558B2 (en) | 2014-10-21 | 2018-01-16 | At&T Intellectual Property I, L.P. | Guided-wave transmission device and methods for use therewith |
US9871283B2 (en) | 2015-07-23 | 2018-01-16 | At&T Intellectual Property I, Lp | Transmission medium having a dielectric core comprised of plural members connected by a ball and socket configuration |
US9871282B2 (en) | 2015-05-14 | 2018-01-16 | At&T Intellectual Property I, L.P. | At least one transmission medium having a dielectric surface that is covered at least in part by a second dielectric |
US9876264B2 (en) | 2015-10-02 | 2018-01-23 | At&T Intellectual Property I, Lp | Communication system, guided wave switch and methods for use therewith |
US9876571B2 (en) | 2015-02-20 | 2018-01-23 | At&T Intellectual Property I, Lp | Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith |
US9876605B1 (en) | 2016-10-21 | 2018-01-23 | At&T Intellectual Property I, L.P. | Launcher and coupling system to support desired guided wave mode |
US9882257B2 (en) | 2015-07-14 | 2018-01-30 | At&T Intellectual Property I, L.P. | Method and apparatus for launching a wave mode that mitigates interference |
US9887447B2 (en) | 2015-05-14 | 2018-02-06 | At&T Intellectual Property I, L.P. | Transmission medium having multiple cores and methods for use therewith |
US9893795B1 (en) | 2016-12-07 | 2018-02-13 | At&T Intellectual Property I, Lp | Method and repeater for broadband distribution |
US9904535B2 (en) | 2015-09-14 | 2018-02-27 | At&T Intellectual Property I, L.P. | Method and apparatus for distributing software |
US9906269B2 (en) | 2014-09-17 | 2018-02-27 | At&T Intellectual Property I, L.P. | Monitoring and mitigating conditions in a communication network |
US9912381B2 (en) | 2015-06-03 | 2018-03-06 | At&T Intellectual Property I, Lp | Network termination and methods for use therewith |
US9911020B1 (en) | 2016-12-08 | 2018-03-06 | At&T Intellectual Property I, L.P. | Method and apparatus for tracking via a radio frequency identification device |
US9913139B2 (en) | 2015-06-09 | 2018-03-06 | At&T Intellectual Property I, L.P. | Signal fingerprinting for authentication of communicating devices |
US9912027B2 (en) | 2015-07-23 | 2018-03-06 | At&T Intellectual Property I, L.P. | Method and apparatus for exchanging communication signals |
US9912033B2 (en) | 2014-10-21 | 2018-03-06 | At&T Intellectual Property I, Lp | Guided wave coupler, coupling module and methods for use therewith |
US9917341B2 (en) | 2015-05-27 | 2018-03-13 | At&T Intellectual Property I, L.P. | Apparatus and method for launching electromagnetic waves and for modifying radial dimensions of the propagating electromagnetic waves |
US9929755B2 (en) | 2015-07-14 | 2018-03-27 | At&T Intellectual Property I, L.P. | Method and apparatus for coupling an antenna to a device |
US9927517B1 (en) | 2016-12-06 | 2018-03-27 | At&T Intellectual Property I, L.P. | Apparatus and methods for sensing rainfall |
US9948333B2 (en) | 2015-07-23 | 2018-04-17 | At&T Intellectual Property I, L.P. | Method and apparatus for wireless communications to mitigate interference |
US9954287B2 (en) | 2014-11-20 | 2018-04-24 | At&T Intellectual Property I, L.P. | Apparatus for converting wireless signals and electromagnetic waves and methods thereof |
US9954286B2 (en) | 2014-10-21 | 2018-04-24 | At&T Intellectual Property I, L.P. | Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith |
US9967173B2 (en) | 2015-07-31 | 2018-05-08 | At&T Intellectual Property I, L.P. | Method and apparatus for authentication and identity management of communicating devices |
US9973940B1 (en) | 2017-02-27 | 2018-05-15 | At&T Intellectual Property I, L.P. | Apparatus and methods for dynamic impedance matching of a guided wave launcher |
US9973416B2 (en) | 2014-10-02 | 2018-05-15 | At&T Intellectual Property I, L.P. | Method and apparatus that provides fault tolerance in a communication network |
US9991580B2 (en) | 2016-10-21 | 2018-06-05 | At&T Intellectual Property I, L.P. | Launcher and coupling system for guided wave mode cancellation |
US9998870B1 (en) | 2016-12-08 | 2018-06-12 | At&T Intellectual Property I, L.P. | Method and apparatus for proximity sensing |
US9999038B2 (en) | 2013-05-31 | 2018-06-12 | At&T Intellectual Property I, L.P. | Remote distributed antenna system |
US9997819B2 (en) | 2015-06-09 | 2018-06-12 | At&T Intellectual Property I, L.P. | Transmission medium and method for facilitating propagation of electromagnetic waves via a core |
US10009067B2 (en) | 2014-12-04 | 2018-06-26 | At&T Intellectual Property I, L.P. | Method and apparatus for configuring a communication interface |
US10020844B2 (en) | 2016-12-06 | 2018-07-10 | T&T Intellectual Property I, L.P. | Method and apparatus for broadcast communication via guided waves |
US10027397B2 (en) | 2016-12-07 | 2018-07-17 | At&T Intellectual Property I, L.P. | Distributed antenna system and methods for use therewith |
US10044409B2 (en) | 2015-07-14 | 2018-08-07 | At&T Intellectual Property I, L.P. | Transmission medium and methods for use therewith |
US10051630B2 (en) | 2013-05-31 | 2018-08-14 | At&T Intellectual Property I, L.P. | Remote distributed antenna system |
US10069535B2 (en) | 2016-12-08 | 2018-09-04 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching electromagnetic waves having a certain electric field structure |
US10069185B2 (en) | 2015-06-25 | 2018-09-04 | At&T Intellectual Property I, L.P. | Methods and apparatus for inducing a non-fundamental wave mode on a transmission medium |
US10090594B2 (en) | 2016-11-23 | 2018-10-02 | At&T Intellectual Property I, L.P. | Antenna system having structural configurations for assembly |
US10090606B2 (en) | 2015-07-15 | 2018-10-02 | At&T Intellectual Property I, L.P. | Antenna system with dielectric array and methods for use therewith |
US10103422B2 (en) | 2016-12-08 | 2018-10-16 | At&T Intellectual Property I, L.P. | Method and apparatus for mounting network devices |
US10135147B2 (en) | 2016-10-18 | 2018-11-20 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching guided waves via an antenna |
US10135145B2 (en) | 2016-12-06 | 2018-11-20 | At&T Intellectual Property I, L.P. | Apparatus and methods for generating an electromagnetic wave along a transmission medium |
US10139820B2 (en) | 2016-12-07 | 2018-11-27 | At&T Intellectual Property I, L.P. | Method and apparatus for deploying equipment of a communication system |
US10148016B2 (en) | 2015-07-14 | 2018-12-04 | At&T Intellectual Property I, L.P. | Apparatus and methods for communicating utilizing an antenna array |
US10168695B2 (en) | 2016-12-07 | 2019-01-01 | At&T Intellectual Property I, L.P. | Method and apparatus for controlling an unmanned aircraft |
US10178445B2 (en) | 2016-11-23 | 2019-01-08 | At&T Intellectual Property I, L.P. | Methods, devices, and systems for load balancing between a plurality of waveguides |
US10205655B2 (en) | 2015-07-14 | 2019-02-12 | At&T Intellectual Property I, L.P. | Apparatus and methods for communicating utilizing an antenna array and multiple communication paths |
US10225025B2 (en) | 2016-11-03 | 2019-03-05 | At&T Intellectual Property I, L.P. | Method and apparatus for detecting a fault in a communication system |
US10224634B2 (en) | 2016-11-03 | 2019-03-05 | At&T Intellectual Property I, L.P. | Methods and apparatus for adjusting an operational characteristic of an antenna |
US10243270B2 (en) | 2016-12-07 | 2019-03-26 | At&T Intellectual Property I, L.P. | Beam adaptive multi-feed dielectric antenna system and methods for use therewith |
US10243784B2 (en) | 2014-11-20 | 2019-03-26 | At&T Intellectual Property I, L.P. | System for generating topology information and methods thereof |
US10264586B2 (en) | 2016-12-09 | 2019-04-16 | At&T Mobility Ii Llc | Cloud-based packet controller and methods for use therewith |
US10291334B2 (en) | 2016-11-03 | 2019-05-14 | At&T Intellectual Property I, L.P. | System for detecting a fault in a communication system |
US10298293B2 (en) | 2017-03-13 | 2019-05-21 | At&T Intellectual Property I, L.P. | Apparatus of communication utilizing wireless network devices |
US10305190B2 (en) | 2016-12-01 | 2019-05-28 | At&T Intellectual Property I, L.P. | Reflecting dielectric antenna system and methods for use therewith |
US10312567B2 (en) | 2016-10-26 | 2019-06-04 | At&T Intellectual Property I, L.P. | Launcher with planar strip antenna and methods for use therewith |
US10326689B2 (en) | 2016-12-08 | 2019-06-18 | At&T Intellectual Property I, L.P. | Method and system for providing alternative communication paths |
US10326494B2 (en) | 2016-12-06 | 2019-06-18 | At&T Intellectual Property I, L.P. | Apparatus for measurement de-embedding and methods for use therewith |
US10340573B2 (en) | 2016-10-26 | 2019-07-02 | At&T Intellectual Property I, L.P. | Launcher with cylindrical coupling device and methods for use therewith |
US10340983B2 (en) | 2016-12-09 | 2019-07-02 | At&T Intellectual Property I, L.P. | Method and apparatus for surveying remote sites via guided wave communications |
US10340603B2 (en) | 2016-11-23 | 2019-07-02 | At&T Intellectual Property I, L.P. | Antenna system having shielded structural configurations for assembly |
US10340601B2 (en) | 2016-11-23 | 2019-07-02 | At&T Intellectual Property I, L.P. | Multi-antenna system and methods for use therewith |
US10355367B2 (en) | 2015-10-16 | 2019-07-16 | At&T Intellectual Property I, L.P. | Antenna structure for exchanging wireless signals |
US10361489B2 (en) | 2016-12-01 | 2019-07-23 | At&T Intellectual Property I, L.P. | Dielectric dish antenna system and methods for use therewith |
US10359749B2 (en) | 2016-12-07 | 2019-07-23 | At&T Intellectual Property I, L.P. | Method and apparatus for utilities management via guided wave communication |
US10374316B2 (en) | 2016-10-21 | 2019-08-06 | At&T Intellectual Property I, L.P. | System and dielectric antenna with non-uniform dielectric |
US10382976B2 (en) | 2016-12-06 | 2019-08-13 | At&T Intellectual Property I, L.P. | Method and apparatus for managing wireless communications based on communication paths and network device positions |
US10389029B2 (en) | 2016-12-07 | 2019-08-20 | At&T Intellectual Property I, L.P. | Multi-feed dielectric antenna system with core selection and methods for use therewith |
US10389037B2 (en) | 2016-12-08 | 2019-08-20 | At&T Intellectual Property I, L.P. | Apparatus and methods for selecting sections of an antenna array and use therewith |
US10411356B2 (en) | 2016-12-08 | 2019-09-10 | At&T Intellectual Property I, L.P. | Apparatus and methods for selectively targeting communication devices with an antenna array |
US10439675B2 (en) | 2016-12-06 | 2019-10-08 | At&T Intellectual Property I, L.P. | Method and apparatus for repeating guided wave communication signals |
US10446936B2 (en) | 2016-12-07 | 2019-10-15 | At&T Intellectual Property I, L.P. | Multi-feed dielectric antenna system and methods for use therewith |
US10498044B2 (en) | 2016-11-03 | 2019-12-03 | At&T Intellectual Property I, L.P. | Apparatus for configuring a surface of an antenna |
US10530505B2 (en) | 2016-12-08 | 2020-01-07 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching electromagnetic waves along a transmission medium |
US10535928B2 (en) | 2016-11-23 | 2020-01-14 | At&T Intellectual Property I, L.P. | Antenna system and methods for use therewith |
US10547348B2 (en) | 2016-12-07 | 2020-01-28 | At&T Intellectual Property I, L.P. | Method and apparatus for switching transmission mediums in a communication system |
US10601494B2 (en) | 2016-12-08 | 2020-03-24 | At&T Intellectual Property I, L.P. | Dual-band communication device and method for use therewith |
US10637149B2 (en) | 2016-12-06 | 2020-04-28 | At&T Intellectual Property I, L.P. | Injection molded dielectric antenna and methods for use therewith |
US10650940B2 (en) | 2015-05-15 | 2020-05-12 | At&T Intellectual Property I, L.P. | Transmission medium having a conductive material and methods for use therewith |
US10694379B2 (en) | 2016-12-06 | 2020-06-23 | At&T Intellectual Property I, L.P. | Waveguide system with device-based authentication and methods for use therewith |
US10727599B2 (en) | 2016-12-06 | 2020-07-28 | At&T Intellectual Property I, L.P. | Launcher with slot antenna and methods for use therewith |
US10755542B2 (en) | 2016-12-06 | 2020-08-25 | At&T Intellectual Property I, L.P. | Method and apparatus for surveillance via guided wave communication |
US10777873B2 (en) | 2016-12-08 | 2020-09-15 | At&T Intellectual Property I, L.P. | Method and apparatus for mounting network devices |
US10797781B2 (en) | 2015-06-03 | 2020-10-06 | At&T Intellectual Property I, L.P. | Client node device and methods for use therewith |
US10811767B2 (en) | 2016-10-21 | 2020-10-20 | At&T Intellectual Property I, L.P. | System and dielectric antenna with convex dielectric radome |
US10819035B2 (en) | 2016-12-06 | 2020-10-27 | At&T Intellectual Property I, L.P. | Launcher with helical antenna and methods for use therewith |
US10916969B2 (en) | 2016-12-08 | 2021-02-09 | At&T Intellectual Property I, L.P. | Method and apparatus for providing power using an inductive coupling |
US10938108B2 (en) | 2016-12-08 | 2021-03-02 | At&T Intellectual Property I, L.P. | Frequency selective multi-feed dielectric antenna system and methods for use therewith |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54103657A (en) * | 1978-02-01 | 1979-08-15 | Mitsubishi Electric Corp | Array antenna |
JP2003318647A (en) * | 2002-04-24 | 2003-11-07 | Mitsubishi Electric Corp | Array antenna device |
US20050164664A1 (en) * | 2000-07-21 | 2005-07-28 | Difonzo Daniel F. | Dynamically reconfigurable wireless networks (DRWiN) and methods for operating such networks |
JP2010093399A (en) * | 2008-10-03 | 2010-04-22 | Toyota Motor Corp | Antenna apparatus |
CN203326119U (en) * | 2013-07-09 | 2013-12-04 | 航天信息股份有限公司 | Narrow beam micro-strip circular polarization array antenna |
WO2014153237A1 (en) * | 2013-03-14 | 2014-09-25 | Google Inc. | Optimizing packet/frame forwarding or routing in a wireless backhaul transport system |
-
2014
- 2014-11-06 GB GB1419802.2A patent/GB2532207A/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54103657A (en) * | 1978-02-01 | 1979-08-15 | Mitsubishi Electric Corp | Array antenna |
US20050164664A1 (en) * | 2000-07-21 | 2005-07-28 | Difonzo Daniel F. | Dynamically reconfigurable wireless networks (DRWiN) and methods for operating such networks |
JP2003318647A (en) * | 2002-04-24 | 2003-11-07 | Mitsubishi Electric Corp | Array antenna device |
JP2010093399A (en) * | 2008-10-03 | 2010-04-22 | Toyota Motor Corp | Antenna apparatus |
WO2014153237A1 (en) * | 2013-03-14 | 2014-09-25 | Google Inc. | Optimizing packet/frame forwarding or routing in a wireless backhaul transport system |
CN203326119U (en) * | 2013-07-09 | 2013-12-04 | 航天信息股份有限公司 | Narrow beam micro-strip circular polarization array antenna |
Non-Patent Citations (1)
Title |
---|
IEEE Journal on Selected Areas in Communications, Vol.24, N0. 11, November 2006, M D Saumitra et al, "DMesh: Incorporating Practical Directional Antennas in Multichannel Mesh Networks", pages 2028 - 2039. http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1717617 * |
Cited By (130)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10051630B2 (en) | 2013-05-31 | 2018-08-14 | At&T Intellectual Property I, L.P. | Remote distributed antenna system |
US9999038B2 (en) | 2013-05-31 | 2018-06-12 | At&T Intellectual Property I, L.P. | Remote distributed antenna system |
US9674711B2 (en) | 2013-11-06 | 2017-06-06 | At&T Intellectual Property I, L.P. | Surface-wave communications and methods thereof |
US9768833B2 (en) | 2014-09-15 | 2017-09-19 | At&T Intellectual Property I, L.P. | Method and apparatus for sensing a condition in a transmission medium of electromagnetic waves |
US10063280B2 (en) | 2014-09-17 | 2018-08-28 | At&T Intellectual Property I, L.P. | Monitoring and mitigating conditions in a communication network |
US9906269B2 (en) | 2014-09-17 | 2018-02-27 | At&T Intellectual Property I, L.P. | Monitoring and mitigating conditions in a communication network |
US9973416B2 (en) | 2014-10-02 | 2018-05-15 | At&T Intellectual Property I, L.P. | Method and apparatus that provides fault tolerance in a communication network |
US9685992B2 (en) | 2014-10-03 | 2017-06-20 | At&T Intellectual Property I, L.P. | Circuit panel network and methods thereof |
US9866276B2 (en) | 2014-10-10 | 2018-01-09 | At&T Intellectual Property I, L.P. | Method and apparatus for arranging communication sessions in a communication system |
US9847850B2 (en) | 2014-10-14 | 2017-12-19 | At&T Intellectual Property I, L.P. | Method and apparatus for adjusting a mode of communication in a communication network |
US9912033B2 (en) | 2014-10-21 | 2018-03-06 | At&T Intellectual Property I, Lp | Guided wave coupler, coupling module and methods for use therewith |
US9876587B2 (en) | 2014-10-21 | 2018-01-23 | At&T Intellectual Property I, L.P. | Transmission device with impairment compensation and methods for use therewith |
US9769020B2 (en) | 2014-10-21 | 2017-09-19 | At&T Intellectual Property I, L.P. | Method and apparatus for responding to events affecting communications in a communication network |
US9871558B2 (en) | 2014-10-21 | 2018-01-16 | At&T Intellectual Property I, L.P. | Guided-wave transmission device and methods for use therewith |
US9705610B2 (en) | 2014-10-21 | 2017-07-11 | At&T Intellectual Property I, L.P. | Transmission device with impairment compensation and methods for use therewith |
US9780834B2 (en) | 2014-10-21 | 2017-10-03 | At&T Intellectual Property I, L.P. | Method and apparatus for transmitting electromagnetic waves |
US9960808B2 (en) | 2014-10-21 | 2018-05-01 | At&T Intellectual Property I, L.P. | Guided-wave transmission device and methods for use therewith |
US9954286B2 (en) | 2014-10-21 | 2018-04-24 | At&T Intellectual Property I, L.P. | Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith |
US9954287B2 (en) | 2014-11-20 | 2018-04-24 | At&T Intellectual Property I, L.P. | Apparatus for converting wireless signals and electromagnetic waves and methods thereof |
US9800327B2 (en) | 2014-11-20 | 2017-10-24 | At&T Intellectual Property I, L.P. | Apparatus for controlling operations of a communication device and methods thereof |
US10243784B2 (en) | 2014-11-20 | 2019-03-26 | At&T Intellectual Property I, L.P. | System for generating topology information and methods thereof |
US9742521B2 (en) | 2014-11-20 | 2017-08-22 | At&T Intellectual Property I, L.P. | Transmission device with mode division multiplexing and methods for use therewith |
US9749083B2 (en) | 2014-11-20 | 2017-08-29 | At&T Intellectual Property I, L.P. | Transmission device with mode division multiplexing and methods for use therewith |
US9742462B2 (en) | 2014-12-04 | 2017-08-22 | At&T Intellectual Property I, L.P. | Transmission medium and communication interfaces and methods for use therewith |
US10009067B2 (en) | 2014-12-04 | 2018-06-26 | At&T Intellectual Property I, L.P. | Method and apparatus for configuring a communication interface |
US9876570B2 (en) | 2015-02-20 | 2018-01-23 | At&T Intellectual Property I, Lp | Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith |
US9876571B2 (en) | 2015-02-20 | 2018-01-23 | At&T Intellectual Property I, Lp | Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith |
US9749013B2 (en) | 2015-03-17 | 2017-08-29 | At&T Intellectual Property I, L.P. | Method and apparatus for reducing attenuation of electromagnetic waves guided by a transmission medium |
US9793955B2 (en) | 2015-04-24 | 2017-10-17 | At&T Intellectual Property I, Lp | Passive electrical coupling device and methods for use therewith |
US10224981B2 (en) | 2015-04-24 | 2019-03-05 | At&T Intellectual Property I, Lp | Passive electrical coupling device and methods for use therewith |
US9705561B2 (en) | 2015-04-24 | 2017-07-11 | At&T Intellectual Property I, L.P. | Directional coupling device and methods for use therewith |
US9831912B2 (en) | 2015-04-24 | 2017-11-28 | At&T Intellectual Property I, Lp | Directional coupling device and methods for use therewith |
US9793954B2 (en) | 2015-04-28 | 2017-10-17 | At&T Intellectual Property I, L.P. | Magnetic coupling device and methods for use therewith |
US9871282B2 (en) | 2015-05-14 | 2018-01-16 | At&T Intellectual Property I, L.P. | At least one transmission medium having a dielectric surface that is covered at least in part by a second dielectric |
US9887447B2 (en) | 2015-05-14 | 2018-02-06 | At&T Intellectual Property I, L.P. | Transmission medium having multiple cores and methods for use therewith |
US9748626B2 (en) | 2015-05-14 | 2017-08-29 | At&T Intellectual Property I, L.P. | Plurality of cables having different cross-sectional shapes which are bundled together to form a transmission medium |
US10650940B2 (en) | 2015-05-15 | 2020-05-12 | At&T Intellectual Property I, L.P. | Transmission medium having a conductive material and methods for use therewith |
US9917341B2 (en) | 2015-05-27 | 2018-03-13 | At&T Intellectual Property I, L.P. | Apparatus and method for launching electromagnetic waves and for modifying radial dimensions of the propagating electromagnetic waves |
US10797781B2 (en) | 2015-06-03 | 2020-10-06 | At&T Intellectual Property I, L.P. | Client node device and methods for use therewith |
US9912381B2 (en) | 2015-06-03 | 2018-03-06 | At&T Intellectual Property I, Lp | Network termination and methods for use therewith |
US9866309B2 (en) | 2015-06-03 | 2018-01-09 | At&T Intellectual Property I, Lp | Host node device and methods for use therewith |
US9935703B2 (en) | 2015-06-03 | 2018-04-03 | At&T Intellectual Property I, L.P. | Host node device and methods for use therewith |
US9967002B2 (en) | 2015-06-03 | 2018-05-08 | At&T Intellectual I, Lp | Network termination and methods for use therewith |
US9912382B2 (en) | 2015-06-03 | 2018-03-06 | At&T Intellectual Property I, Lp | Network termination and methods for use therewith |
US10050697B2 (en) | 2015-06-03 | 2018-08-14 | At&T Intellectual Property I, L.P. | Host node device and methods for use therewith |
US10812174B2 (en) | 2015-06-03 | 2020-10-20 | At&T Intellectual Property I, L.P. | Client node device and methods for use therewith |
US9913139B2 (en) | 2015-06-09 | 2018-03-06 | At&T Intellectual Property I, L.P. | Signal fingerprinting for authentication of communicating devices |
US9997819B2 (en) | 2015-06-09 | 2018-06-12 | At&T Intellectual Property I, L.P. | Transmission medium and method for facilitating propagation of electromagnetic waves via a core |
US9820146B2 (en) | 2015-06-12 | 2017-11-14 | At&T Intellectual Property I, L.P. | Method and apparatus for authentication and identity management of communicating devices |
US9787412B2 (en) | 2015-06-25 | 2017-10-10 | At&T Intellectual Property I, L.P. | Methods and apparatus for inducing a fundamental wave mode on a transmission medium |
US10069185B2 (en) | 2015-06-25 | 2018-09-04 | At&T Intellectual Property I, L.P. | Methods and apparatus for inducing a non-fundamental wave mode on a transmission medium |
US9865911B2 (en) | 2015-06-25 | 2018-01-09 | At&T Intellectual Property I, L.P. | Waveguide system for slot radiating first electromagnetic waves that are combined into a non-fundamental wave mode second electromagnetic wave on a transmission medium |
US9882257B2 (en) | 2015-07-14 | 2018-01-30 | At&T Intellectual Property I, L.P. | Method and apparatus for launching a wave mode that mitigates interference |
US9847566B2 (en) | 2015-07-14 | 2017-12-19 | At&T Intellectual Property I, L.P. | Method and apparatus for adjusting a field of a signal to mitigate interference |
US9929755B2 (en) | 2015-07-14 | 2018-03-27 | At&T Intellectual Property I, L.P. | Method and apparatus for coupling an antenna to a device |
US10205655B2 (en) | 2015-07-14 | 2019-02-12 | At&T Intellectual Property I, L.P. | Apparatus and methods for communicating utilizing an antenna array and multiple communication paths |
US10148016B2 (en) | 2015-07-14 | 2018-12-04 | At&T Intellectual Property I, L.P. | Apparatus and methods for communicating utilizing an antenna array |
US10044409B2 (en) | 2015-07-14 | 2018-08-07 | At&T Intellectual Property I, L.P. | Transmission medium and methods for use therewith |
US9853342B2 (en) | 2015-07-14 | 2017-12-26 | At&T Intellectual Property I, L.P. | Dielectric transmission medium connector and methods for use therewith |
US10090606B2 (en) | 2015-07-15 | 2018-10-02 | At&T Intellectual Property I, L.P. | Antenna system with dielectric array and methods for use therewith |
US9912027B2 (en) | 2015-07-23 | 2018-03-06 | At&T Intellectual Property I, L.P. | Method and apparatus for exchanging communication signals |
US9806818B2 (en) | 2015-07-23 | 2017-10-31 | At&T Intellectual Property I, Lp | Node device, repeater and methods for use therewith |
US9948333B2 (en) | 2015-07-23 | 2018-04-17 | At&T Intellectual Property I, L.P. | Method and apparatus for wireless communications to mitigate interference |
US9749053B2 (en) | 2015-07-23 | 2017-08-29 | At&T Intellectual Property I, L.P. | Node device, repeater and methods for use therewith |
US9871283B2 (en) | 2015-07-23 | 2018-01-16 | At&T Intellectual Property I, Lp | Transmission medium having a dielectric core comprised of plural members connected by a ball and socket configuration |
US9967173B2 (en) | 2015-07-31 | 2018-05-08 | At&T Intellectual Property I, L.P. | Method and apparatus for authentication and identity management of communicating devices |
US9838078B2 (en) | 2015-07-31 | 2017-12-05 | At&T Intellectual Property I, L.P. | Method and apparatus for exchanging communication signals |
US9735833B2 (en) | 2015-07-31 | 2017-08-15 | At&T Intellectual Property I, L.P. | Method and apparatus for communications management in a neighborhood network |
US9904535B2 (en) | 2015-09-14 | 2018-02-27 | At&T Intellectual Property I, L.P. | Method and apparatus for distributing software |
US9769128B2 (en) | 2015-09-28 | 2017-09-19 | At&T Intellectual Property I, L.P. | Method and apparatus for encryption of communications over a network |
US9729197B2 (en) | 2015-10-01 | 2017-08-08 | At&T Intellectual Property I, L.P. | Method and apparatus for communicating network management traffic over a network |
US9876264B2 (en) | 2015-10-02 | 2018-01-23 | At&T Intellectual Property I, Lp | Communication system, guided wave switch and methods for use therewith |
US10355367B2 (en) | 2015-10-16 | 2019-07-16 | At&T Intellectual Property I, L.P. | Antenna structure for exchanging wireless signals |
US9860075B1 (en) | 2016-08-26 | 2018-01-02 | At&T Intellectual Property I, L.P. | Method and communication node for broadband distribution |
US10135147B2 (en) | 2016-10-18 | 2018-11-20 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching guided waves via an antenna |
US9991580B2 (en) | 2016-10-21 | 2018-06-05 | At&T Intellectual Property I, L.P. | Launcher and coupling system for guided wave mode cancellation |
US10374316B2 (en) | 2016-10-21 | 2019-08-06 | At&T Intellectual Property I, L.P. | System and dielectric antenna with non-uniform dielectric |
US10811767B2 (en) | 2016-10-21 | 2020-10-20 | At&T Intellectual Property I, L.P. | System and dielectric antenna with convex dielectric radome |
US9876605B1 (en) | 2016-10-21 | 2018-01-23 | At&T Intellectual Property I, L.P. | Launcher and coupling system to support desired guided wave mode |
US10312567B2 (en) | 2016-10-26 | 2019-06-04 | At&T Intellectual Property I, L.P. | Launcher with planar strip antenna and methods for use therewith |
US10340573B2 (en) | 2016-10-26 | 2019-07-02 | At&T Intellectual Property I, L.P. | Launcher with cylindrical coupling device and methods for use therewith |
US10224634B2 (en) | 2016-11-03 | 2019-03-05 | At&T Intellectual Property I, L.P. | Methods and apparatus for adjusting an operational characteristic of an antenna |
US10225025B2 (en) | 2016-11-03 | 2019-03-05 | At&T Intellectual Property I, L.P. | Method and apparatus for detecting a fault in a communication system |
US10498044B2 (en) | 2016-11-03 | 2019-12-03 | At&T Intellectual Property I, L.P. | Apparatus for configuring a surface of an antenna |
US10291334B2 (en) | 2016-11-03 | 2019-05-14 | At&T Intellectual Property I, L.P. | System for detecting a fault in a communication system |
US10340601B2 (en) | 2016-11-23 | 2019-07-02 | At&T Intellectual Property I, L.P. | Multi-antenna system and methods for use therewith |
US10178445B2 (en) | 2016-11-23 | 2019-01-08 | At&T Intellectual Property I, L.P. | Methods, devices, and systems for load balancing between a plurality of waveguides |
US10340603B2 (en) | 2016-11-23 | 2019-07-02 | At&T Intellectual Property I, L.P. | Antenna system having shielded structural configurations for assembly |
US10535928B2 (en) | 2016-11-23 | 2020-01-14 | At&T Intellectual Property I, L.P. | Antenna system and methods for use therewith |
US10090594B2 (en) | 2016-11-23 | 2018-10-02 | At&T Intellectual Property I, L.P. | Antenna system having structural configurations for assembly |
US10361489B2 (en) | 2016-12-01 | 2019-07-23 | At&T Intellectual Property I, L.P. | Dielectric dish antenna system and methods for use therewith |
US10305190B2 (en) | 2016-12-01 | 2019-05-28 | At&T Intellectual Property I, L.P. | Reflecting dielectric antenna system and methods for use therewith |
US9927517B1 (en) | 2016-12-06 | 2018-03-27 | At&T Intellectual Property I, L.P. | Apparatus and methods for sensing rainfall |
US10020844B2 (en) | 2016-12-06 | 2018-07-10 | T&T Intellectual Property I, L.P. | Method and apparatus for broadcast communication via guided waves |
US10819035B2 (en) | 2016-12-06 | 2020-10-27 | At&T Intellectual Property I, L.P. | Launcher with helical antenna and methods for use therewith |
US10755542B2 (en) | 2016-12-06 | 2020-08-25 | At&T Intellectual Property I, L.P. | Method and apparatus for surveillance via guided wave communication |
US10727599B2 (en) | 2016-12-06 | 2020-07-28 | At&T Intellectual Property I, L.P. | Launcher with slot antenna and methods for use therewith |
US10326494B2 (en) | 2016-12-06 | 2019-06-18 | At&T Intellectual Property I, L.P. | Apparatus for measurement de-embedding and methods for use therewith |
US10694379B2 (en) | 2016-12-06 | 2020-06-23 | At&T Intellectual Property I, L.P. | Waveguide system with device-based authentication and methods for use therewith |
US10637149B2 (en) | 2016-12-06 | 2020-04-28 | At&T Intellectual Property I, L.P. | Injection molded dielectric antenna and methods for use therewith |
US10135145B2 (en) | 2016-12-06 | 2018-11-20 | At&T Intellectual Property I, L.P. | Apparatus and methods for generating an electromagnetic wave along a transmission medium |
US10439675B2 (en) | 2016-12-06 | 2019-10-08 | At&T Intellectual Property I, L.P. | Method and apparatus for repeating guided wave communication signals |
US10382976B2 (en) | 2016-12-06 | 2019-08-13 | At&T Intellectual Property I, L.P. | Method and apparatus for managing wireless communications based on communication paths and network device positions |
US10446936B2 (en) | 2016-12-07 | 2019-10-15 | At&T Intellectual Property I, L.P. | Multi-feed dielectric antenna system and methods for use therewith |
US10027397B2 (en) | 2016-12-07 | 2018-07-17 | At&T Intellectual Property I, L.P. | Distributed antenna system and methods for use therewith |
US10139820B2 (en) | 2016-12-07 | 2018-11-27 | At&T Intellectual Property I, L.P. | Method and apparatus for deploying equipment of a communication system |
US10243270B2 (en) | 2016-12-07 | 2019-03-26 | At&T Intellectual Property I, L.P. | Beam adaptive multi-feed dielectric antenna system and methods for use therewith |
US10389029B2 (en) | 2016-12-07 | 2019-08-20 | At&T Intellectual Property I, L.P. | Multi-feed dielectric antenna system with core selection and methods for use therewith |
US9893795B1 (en) | 2016-12-07 | 2018-02-13 | At&T Intellectual Property I, Lp | Method and repeater for broadband distribution |
US10359749B2 (en) | 2016-12-07 | 2019-07-23 | At&T Intellectual Property I, L.P. | Method and apparatus for utilities management via guided wave communication |
US10168695B2 (en) | 2016-12-07 | 2019-01-01 | At&T Intellectual Property I, L.P. | Method and apparatus for controlling an unmanned aircraft |
US10547348B2 (en) | 2016-12-07 | 2020-01-28 | At&T Intellectual Property I, L.P. | Method and apparatus for switching transmission mediums in a communication system |
US10601494B2 (en) | 2016-12-08 | 2020-03-24 | At&T Intellectual Property I, L.P. | Dual-band communication device and method for use therewith |
US10069535B2 (en) | 2016-12-08 | 2018-09-04 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching electromagnetic waves having a certain electric field structure |
US9998870B1 (en) | 2016-12-08 | 2018-06-12 | At&T Intellectual Property I, L.P. | Method and apparatus for proximity sensing |
US10938108B2 (en) | 2016-12-08 | 2021-03-02 | At&T Intellectual Property I, L.P. | Frequency selective multi-feed dielectric antenna system and methods for use therewith |
US10411356B2 (en) | 2016-12-08 | 2019-09-10 | At&T Intellectual Property I, L.P. | Apparatus and methods for selectively targeting communication devices with an antenna array |
US10916969B2 (en) | 2016-12-08 | 2021-02-09 | At&T Intellectual Property I, L.P. | Method and apparatus for providing power using an inductive coupling |
US10389037B2 (en) | 2016-12-08 | 2019-08-20 | At&T Intellectual Property I, L.P. | Apparatus and methods for selecting sections of an antenna array and use therewith |
US10530505B2 (en) | 2016-12-08 | 2020-01-07 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching electromagnetic waves along a transmission medium |
US10326689B2 (en) | 2016-12-08 | 2019-06-18 | At&T Intellectual Property I, L.P. | Method and system for providing alternative communication paths |
US9911020B1 (en) | 2016-12-08 | 2018-03-06 | At&T Intellectual Property I, L.P. | Method and apparatus for tracking via a radio frequency identification device |
US10777873B2 (en) | 2016-12-08 | 2020-09-15 | At&T Intellectual Property I, L.P. | Method and apparatus for mounting network devices |
US10103422B2 (en) | 2016-12-08 | 2018-10-16 | At&T Intellectual Property I, L.P. | Method and apparatus for mounting network devices |
US10811781B2 (en) | 2016-12-08 | 2020-10-20 | At&T Intellectual Property I, L.P. | Apparatus and methods for selecting sections of an antenna array and use therewith |
US9838896B1 (en) | 2016-12-09 | 2017-12-05 | At&T Intellectual Property I, L.P. | Method and apparatus for assessing network coverage |
US10264586B2 (en) | 2016-12-09 | 2019-04-16 | At&T Mobility Ii Llc | Cloud-based packet controller and methods for use therewith |
US10340983B2 (en) | 2016-12-09 | 2019-07-02 | At&T Intellectual Property I, L.P. | Method and apparatus for surveying remote sites via guided wave communications |
US9973940B1 (en) | 2017-02-27 | 2018-05-15 | At&T Intellectual Property I, L.P. | Apparatus and methods for dynamic impedance matching of a guided wave launcher |
US10298293B2 (en) | 2017-03-13 | 2019-05-21 | At&T Intellectual Property I, L.P. | Apparatus of communication utilizing wireless network devices |
Also Published As
Publication number | Publication date |
---|---|
GB201419802D0 (en) | 2014-12-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB2532207A (en) | Radio frequency communications devices | |
US11088447B2 (en) | Optically controlled meta-material phased array antenna system | |
US9698891B2 (en) | Reduced power consumption in a wireless communication system while providing adequate directional radio coverage | |
TWI544829B (en) | Wireless network device and wireless network control method | |
KR101880990B1 (en) | Method and apparatus for transmitting and receiving signals in multi-antenna system | |
CN1146832A (en) | Dynamic sectorization in a spread spectrum communication system | |
EP3076563B1 (en) | Hybrid beamforming-based open-loop mimo transmission method and apparatus therefor | |
CN104079330A (en) | MIMO-phased-array antenna device, system and implementation method | |
WO2016071681A1 (en) | Antennas | |
CN101499988B (en) | Wideband wireless mobile communication method, system and equipment | |
CN1282389C (en) | Method of generating directional antenna beams and radio transmitter | |
US11539105B2 (en) | Multiscale vector constellation | |
Kuehne et al. | An analog module for hybrid massive MIMO testbeds demonstrating beam alignment algorithms | |
KR20070025438A (en) | Array antenna system | |
US10425214B2 (en) | Method and apparatus for millimeter-wave hybrid beamforming to form subsectors | |
US10848204B2 (en) | Reconfigurable antenna multiple access for millimeter wave systems | |
CN112075032B (en) | Antenna array operation control | |
CN108281802A (en) | Phased array antenna system and mobile terminal | |
Chen et al. | High-speed and wide FoV autonomous beamformer driving forward to 4D resource allocation in 6G RAN era | |
Seyama et al. | Technologies to Enhance 5G Communication Network Capacity | |
US11706765B2 (en) | Modifying a number of uplink or downlink information streams | |
EP1914911B1 (en) | Method and system for indoor communications with optical distribution | |
KR101718885B1 (en) | Multi-antenna transmission and receive apparatus | |
JPH05268658A (en) | Cdma communication system | |
Hu et al. | Mode modulation based multi-mode transmitter for Line-of-Sight propagation |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |