| Patent Number |
Title Of Patent |
Date Issued |
| 6792251 |
Arrangement and method for improving multi-carrier power amplifier efficiency |
September 14, 2004 |
| A multi-carrier power amplifying arrangement has a number of amplifying devices, each of which includes a main amplifier and a linearizing device. Furthermore it includes a device signal for adding the adding output signals from the amplifying devices in phase, a device for detecting the |
| 6791507 |
Feed network for simultaneous generation of narrow and wide beams with a rotational-symmetric an |
September 14, 2004 |
| An N-element rotational-symmetric array antenna can generate N fixed pencil-beams simultaneously with an omnidirectional beam. An N.times.N Butler matrix can be used to feed the array antenna, using fewer than N input ports of the Butler matrix to produce the pencil-beams. One or more |
| 6697643 |
System and method for implementing a multi-beam antenna without duplex filters within a base sta |
February 24, 2004 |
| The present invention is directed to cellular systems and methods for providing a multi-beam antenna configuration within a base station without utilizing duplex filters. The multi-beam antenna configuration of the present invention produces overlaid beams in both the uplink and downlink |
| 6577879 |
System and method for simultaneous transmission of signals in multiple beams without feeder cabl |
June 10, 2003 |
| A telecommunications system and method is disclosed for allowing a base station to simultaneously transmit signals in several beams of a multi-beam antenna configuration. Antenna pattern control is maintained by employing orthogonal polarization orientation for every other beam. For |
| 6531984 |
Dual-polarized antenna |
March 11, 2003 |
| A dual-polarized antenna (10) with good isolation between feed ports (13a, 13b) and high similarity with respect to the radiation patterns is provided. An antenna (10) includes a patch (11), four symmetrically arranged feed structures (12a-12d, 15), two feed ports (13, 13b) and a fee |
| 6285322 |
Electronics unit for wireless transfer of signals |
September 4, 2001 |
| An electronics unit for wireless transfer of signals, includes an antenna part, an electronics part, and a transmission circuit part. The electronics part is placed on a laminate with at least one substrate layer of a dielectric material. The substrate layer is made of a flexible mat |
| 6282434 |
Uplink and downlink transmission quality improvement by differentiated base station antenna patt |
August 28, 2001 |
| In a cellular telecommunications network, a method and apparatus is disclosed for providing a substantial gain in downlink C/I by means of antenna pattern downtilt while still maintaining the coverage limiting signal strength in the uplink by the use of different antenna pattern down |
| 6236364 |
Method and arrangement for improving null depths |
May 22, 2001 |
| To improve null depths in an antenna pattern of a first polarization, formed with nulls in at least one angular region, a further antenna pattern of a second polarization, substantially orthogonal to the first polarization, is concurrently formed. In the angular region, the amplitude |
| 6225947 |
Butler beam port combining for hexagonal cell coverage |
May 1, 2001 |
| An antenna arrangement and a method for obtaining such an antenna arrangement are disclosed. The antenna arrangement utilizes the beam ports of a beam forming network, e.g. a Butler matrix, in connection with a multi-element radiator antenna for obtaining receive/transmit channels ha |
| 6133877 |
Microstrip distribution network device for antennas |
October 17, 2000 |
| A device for microstrip distribution networks and for group antennas for the suppression of unwanted modes on the distribution network side of a microstrip distribution network. This thereby avoids, among other things, unwanted coupling between antenna elements connected to the microstri |
| 6081233 |
Butler beam port combining for hexagonal cell coverage |
June 27, 2000 |
| An antenna arrangement and a method for obtaining such an antenna arrangement are disclosed. The antenna arrangement utilizes the beam ports of a beam forming network, e.g. a Butler matrix, in connection with a multi-element radiator antenna for obtaining receive/transmit channels ha |
| 6067054 |
Method and arrangement relating to antennas |
May 23, 2000 |
| A method and arrangement improve antenna performance parameters. The antenna includes a radiating device for radiating a beam in a substantially predefined direction. The radiating device is provided on a supporting structure. The arrangement includes at least one device to mechanica |
| 6061032 |
Device in antenna units |
May 9, 2000 |
| Dual polarized antenna device for wireless transmission of information using electromagnetic signals with polarizations orthogonal to each other, with at least one antenna element and at least one ground plane made from a first electrically conducting layer, at least one feeder network m |
| 5959588 |
Dual polarized selective elements for beamwidth control |
September 28, 1999 |
| A dual polarized antenna comprises at least one radiating element and a ground plane. The ground plane is, at least partly, provided with a side wall. At least one polarization selective element is provided between the radiating element and the side wall to transmit one of the polarizati |
| 5924020 |
Antenna assembly and associated method for radio communication device |
July 13, 1999 |
| An antenna assembly, and an associated method, which exhibits a selected the antenna beam configuration. The direction of a primary lobe and of a null is selected to improve the signal-to-noise and signal-to-interference ratios of communication signals transmitted between two communicati |
