Radio apparatus

Abstract

A radio apparatus ( 400 ) comprises first and second antennas ( 42,44 ), a first transceiver ( 40 ) having a first transmitter ( 60 ) and a first receiver ( 61 ), a second receiver ( 62 ), a switching means ( 45, 46 ) arranged to provide selectable first and second states, and a control means ( 50 ) adapted to select between the first and second states for simultaneous transmission by the first transmitter ( 60 ) and reception by the second receiver ( 62 ). The switching means ( 45, 46 ) enables the first transmitter ( 60 ) to be coupled to either one of the first and second antennas ( 42, 44 ) and simultaneously the second receiver ( 62 ) to be coupled to the other of the antennas ( 42, 44 ), but prohibits coupling of both the first transmitter ( 60 ) and the second receiver ( 62 ) to a common antenna ( 42 or 44 ).

1 . A textile formed from interwoven electrically conductive and non-conductive yarns, comprising: a multi-layer warp comprising electrically conductive and non-conductive yarns; and a weft comprising electrically conductive and non-conductive yarns; at least some of the electrically conductive weft yarns crossing selected electrically conductive warp yarns without electrical contact therebetween by being separated from the electrically conductive warp yarns by at least one non-conductive warp yarn in each layer of the multi-layer warp, in which a first pair of electrical connection points provided on a first surface of the textile by means of a loop of conductive weft yarn traversing from a second surface of the textile to the first surface and back, and a proximal portion of a conductive warp yarn. 
   
   
       2 . The textile of  claim 1  in which electrically conductive warp yarns are within only one of the layers o yarns. 
   
   
       3 . The textile of  claim 1  in which electrically conductive warp yarns are within two of the layers of warp yarns. 
   
   
       4 . The textile of  claim 1  in which selected adjacent conductive warp yarns are laterally separated by a plurality of non-conductive warp yarns, conductive weft yarns traversing the warp between the non-conductive warp yarns thereby preventing electrical contact between the selected conductive warp yarns and the conductive weft yarns. 
   
   
       5 . The textile of  claim 4  in which the selected adjacent conductive warp yarns are separated by at least three non-conductive warp yarns, at least one loop of conductive weft yarn being disposed around at least one of the non-conductive warp yarns that is not adjacent to the selected conductive warp yarns. 
   
   
       6 . The textile of  claim 5  in which the selected conductive warp yarns all disposed at one face the textile in a first layer of the multi-layer warp, the electrically conductive weft yarns crossing the selected conductive warp yarns behind a second layer of the multi-layer warp. 
   
   
       7 . The textile of  claim 5  in which the at least one loop comprises a float. 
   
   
       8 . The textile of  claim 5  in which there are plural selected conductive warp yarns between each loop. 
   
   
       9 . The textile of  claim 4  in which the selected conductive warp yarns are disposed on alternating faces of the textile in first and second layers of the multi-layer warp, the electrically conductive weft yarns traversing the warp between alternating ones of the selected conductive warp yarns. 
   
   
       10 . The textile of  claim 9  in which the selected conductive warp yarns are laterally separated by at least three non-conductive warp yarns, traversals of the warp by the weft yarns including a float. 
   
   
       11 . The textile of  claim 4  in which there are plural conductive warp yarns between each traversal of the weft yarn. 
   
   
       12 . The textile of  claim 1  further including at least one electrically conductive crossover in which a conductive weft yarn forms a loop around a conductive warp yarn making electrical contact therewith at selected crossover points in the textile. 
   
   
       13 . The textile of  claim 1  further including at least one bypass in which a conductive warp yarn is crossed by an electrically conductive weft yarn between two successive traversals of the warp and is electrically separated from the electrically conductive weft yarn by at least five non-conductive warp yarns. 
   
   
       14 . The textile of  claim 1  in which plural pairs of electrical connection points are provided on the first surface loops of the conductive weft and respective proximal portions of conductive warp yarns to form an array of electrical connection pairs. 
   
   
       15 . The textile of  claim 1  in which triplets and/or quadruplets of electrical connection points are provided on a first surface of the textile by loops of conductive weft yarns traversing from a second surface of the textile to the first surface and back, and respective proximal portions of conductive warp yarns. 
   
   
       16 . The textile of  claim 15  in which each triplet or quadruplet of electrical connection points is provided on the first surface by loops of the conductive weft yarns and a respective proximal portion of a conductive warp yarn to form an array of electrical connection triplets or quadruplets. 
   
   
       17 . The textile of  claim 1  in which a second pair of electrical connection points is provided on the second surface of the textile by means of a loop of conductive weft yarn traversing from the first surface of the textile to the second surface and back, and a proximal portion of a conductive warp yarn. 
   
   
       18 . The textile of  claim 1  further comprising one or more electronic components attached to the textile, the electronic components selected from one or more of a sensor, actuator, integrated circuit and optoelectronic device, each electronic component corresponding to an electrically conductive weft yarn and an electrically conductive warp yarn. 
   
   
       19 . The textile of  claim 18  in which the electronic components are in the form of an array. 
   
   
       20 . The textile of  claim 18  in which the electronic components are Light Emitting Diodes. 
   
   
       21 . The textile of  claim 20  in which the array comprises a matrix of individually addressable Light Emitting Diodes. 
   
   
       22 . The textile of  claim 18  further comprising a radio frequency antenna comprising woven conductive yarns in electrical connection with and for remote communication with the electronic components. 
   
   
       23 . A textile formed from interwoven electrically conductive and non-conductive yarns, comprising: a multi-layer warp comprising electrically conductive and non-conductive yarns; and a weft comprising electrically conductive and non-conductive yarns; at least some of the electrically conductive weft yarns crossing selected electrically conductive warp yarns without electrical contact therebetween by being separated from the electrically conductive warp yarns by at least one non-conductive warp yarn in each layer of the multi-layer warp, in which the multi-layer warp comprises only two layers of yarns. 
   
   
       24 . The textile of  claim 23  in which electrically conductive warp yarns are within only one of the layers of yarns. 
   
   
       25 . The textile of  claim 23  in which electrically conductive warp yarns are within both of the layers of warp yarns. 
   
   
       26 . The textile of  claim 23  in which selected adjacent conductive warp yarns are laterally separated by a plurality of non-conductive warp yarns, conductive weft yarns traversing the warp between the non-conductive warp yarns thereby preventing electrical contact between the selected conductive warp yarns and the conductive weft yarns. 
   
   
       27 . The textile of  claim 26  in which the selected adjacent conductive warp yarns are separated by at least three non-conductive warp yarns, at least one loop of conductive weft yarn being disposed around at least one of the non-conductive warp yarns that is not adjacent to the selected conductive warp yarns. 
   
   
       28 . The textile of  claim 27  in which the selected conductive warp yarns are all disposed at one face of the textile in a first layer of the multi-layer warp, the electrically conductive weft yarns crossing the selected conductive warp yarns behind a second layer of the multi-layer warp. 
   
   
       29 . The textile of  claim 27  in which the at least one loop comprises a float. 
   
   
       30 . The textile of  claim 27  in which there are plural selected conductive warp yarns between each loop. 
   
   
       31 . The textile of  claim 26  in which the selected conductive warp yarns are disposed on alternating faces of the textile in first and second layers of the multi-layer warp, the electrically conductive weft yarns traversing the warp between alternating ones of the selected conductive warp yarns. 
   
   
       32 . The textile of  claim 31  in which the selected conductive warp yarns are laterally separated by at least three non-conductive warp yarns, traversals of the warp by the weft yarns including a float. 
   
   
       33 . The textile of  claim 26  in which there are plural conductive warp yarns between each traversal of the weft yarn. 
   
   
       34 . The textile of  claim 23  further including at least one electrically conductive crossover in which a conductive weft yarn forms a loop around a conductive warp yarn making electrical contact therewith at selected crossover points in the textile. 
   
   
       35 . The textile of  claim 23  further including at least one bypass in which a conductive warp yarn is crossed by an electrically conductive weft yarn between two successive traversals of the warp and is electrically separated from the electrically conductive weft yarn by at least five non-conductive warp yarns. 
   
   
       36 . The textile of  claim 23  in which plural pairs of electrical connection points are provided on the first surface by loops of the conductive weft and respective proximal portions of conductive warp yarns to form an array of electrical connection pairs. 
   
   
       37 . The textile of  claim 23  in which triplets and/or quadruplets of electrical connection points are provided on a first surface of the textile by loops of conductive weft yarns traversing from a second surface of the textile to the first surface and back, and respective proximal portions of conductive warp yarns. 
   
   
       38 . The textile of  claim 37  in which each triplet or quadruplet of electrical connection points is provided on the first surface by loops of the conductive weft yarns and a respective proximal portion of a conductive warp yarn to form an array of electrical connection triplets or quadruplets. 
   
   
       39 . The textile of  claim 23  in which a second pair of electrical connection points is provided on the second surface of the textile by means of a loop of conductive weft yarn traversing from the first surface of the textile to the second surface and back, and a proximal portion of a conductive warp yarn. 
   
   
       40 . The textile of  claim 23  further comprising one or more electronic components attached to the textile, the electronic components selected from one or more of a sensor, actuator, integrated circuit and optoelectronic device, each electronic component corresponding to an electrically conductive weft yarn and an electrically conductive warp yarn. 
   
   
       41 . The textile of  claim 40  in which the electronic components are in the form of an array. 
   
   
       42 . The textile of  claim 40  in which the electronic components are Light Emitting Diodes. 
   
   
       43 . The textile of  claim 42  in which the array comprises a matrix of individually addressable Light Emitting Diodes. 
   
   
       44 . The textile of  claim 40  further comprising a radio frequency antenna comprising woven conductive yarns in electrical connection with and for remote communication with the electronic components.