Bjorn Johannisson
32Patents
10h-index
33Co-inventors
75Inventor score
Filing activity: Dec 15, 1995 → Mar 12, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5924020A | Antenna assembly and associated method for radio communication device | Electricity | 45 | Expired |
| US6531984B1 | Dual-polarized antenna | Electricity | 30 | Expired |
| US6282434A | Uplink and downlink transmission quality improvement by differentiated base station antenna pattern downtilt | Electricity | 30 | Expired |
| US6577879B1 | System and method for simultaneous transmission of signals in multiple beams without feeder cable coherency | Electricity | 27 | Expired |
| US6081233A | Butler beam port combining for hexagonal cell coverage | Electricity | 25 | Expired |
| US6791507B2 | Feed network for simultaneous generation of narrow and wide beams with a rotational-symmetric antenna | Electricity | 19 | Expired |
| US6351243B1 | Sparse array antenna | Electricity | 16 | Expired |
| US7069053B2 | Antenna arrangement and method relating thereto | Electricity | 14 | Expired |
| US8725204B2 | Virtual multiple antenna (VMAT) | Electricity | 13 | Active |
| US6697643B1 | System and method for implementing a multi-beam antenna without duplex filters within a base station | Electricity | 13 | Expired |
| US6225950A | Polarization isolation in antennas | Electricity | 10 | Expired |
| US6061032A | Device in antenna units | Electricity | 10 | Expired |
| US6792251B2 | Arrangement and method for improving multi-carrier power amplifier efficiency | Electricity | 10 | Expired |
| US6067054A | Method and arrangement relating to antennas | Electricity | 8 | Expired |
| US8994588B2 | Method of designing weight vectors for a dual beam antenna with orthogonal polarizations | Electricity | 7 | Active |
| US6133877A | Microstrip distribution network device for antennas | Electricity | 6 | Expired |
| US6285322A | Electronics unit for wireless transfer of signals | Electricity | 5 | Expired |
| US8981993B2 | Beamforming methods and apparatuses | Electricity | 3 | Active |
| US10237792B2 | Method and device for detecting a number of user terminals | Electricity | 3 | Active |
| US6236364A | Method and arrangement for improving null depths | Electricity | 3 | Expired |
| US8374607B2 | Data processing in intra-site handover | Electricity | 3 | Active |
| US5959588A | Dual polarized selective elements for beamwidth control | Electricity | 2 | Expired |
| US10446925B2 | Method for beamforming a beam using an active antenna | Electricity | 1 | Active |
| US8934942B2 | Base station arrangements using a plurality of antenna elements with different polarizations | Electricity | 1 | Active |
| US6225947A | Butler beam port combining for hexagonal cell coverage | Electricity | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.