Issued Patents All Time
Showing 76–100 of 111 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6590940 | Power modulation systems and methods that separately amplify low and high frequency portions of an amplitude waveform | Bengt Lindoff | 2003-07-08 |
| 6566944 | Current modulator with dynamic amplifier impedance compensation | David Richard Pehlke, Aristotele Hadjichristos | 2003-05-20 |
| 6480046 | Transmitter apparatus and methods using frequency doubling modulation | — | 2002-11-12 |
| 6424826 | Systems and methods for sharing reference frequency signals within a wireless mobile terminal between a wireless transceiver and a global positioning system receiver | Robert Ray Horton | 2002-07-23 |
| 6411826 | Portable radiotelephones including patch antennas having openings therein | — | 2002-06-25 |
| 6411655 | Systems and methods for converting a stream of complex numbers into an amplitude and phase-modulated radio power signal | Alan R. Holden, Paul W. Dent | 2002-06-25 |
| 6380802 | Transmitter using input modulation for envelope restoration scheme for linear high-efficiency power amplification | David R. Pehike, Antonio Montalvo | 2002-04-30 |
| 6380809 | Method and apparatus for tuning oscillator to a selected frequency | — | 2002-04-30 |
| 6359506 | Linear modulation using a linear and a non-linear amplifier | Paul W. Dent | 2002-03-19 |
| 6295442 | Amplitude modulation to phase modulation cancellation method in an RF amplifier | Jeffrey A. Schlang, Charles Gore, Jacob Mannerstråle | 2001-09-25 |
| 6285251 | Amplification systems and methods using fixed and modulated power supply voltages and buck-boost control | Paul W. Dent | 2001-09-04 |
| 6252543 | Location system combining ranging measurements from GPS and cellular networks | — | 2001-06-26 |
| 6240276 | Compensating for errors in tuning frequency of a global positioning satellite (GPS) receiver | — | 2001-05-29 |
| 6236214 | Method and apparatus for determining the remaining operation time of a mobile communication unit | Chris Turner, I. Nelson Wakefield | 2001-05-22 |
| 6201452 | Systems and methods for converting a stream of complex numbers into a modulated radio power signal | Paul W. Dent, Alan R. Holden | 2001-03-13 |
| 6194963 | Circuit and method for I/Q modulation with independent, high efficiency amplitude modulation | Jeffrey A. Schlang, Charles Gore, Ronald D. Boesch, Domenico Arpaia | 2001-02-27 |
| 6191653 | Circuit and method for linearizing amplitude modulation in a power amplifier | Jeffrey A. Schlang, Charles Gore, Ronald D. Boesch, Domenico Arpaia | 2001-02-20 |
| 6181199 | Power IQ modulation systems and methods | Paul W. Dent, Alan R. Holden | 2001-01-30 |
| 6154656 | Wireless communication device and system incorporating location-determining means | — | 2000-11-28 |
| 6097974 | Combined GPS and wide bandwidth radiotelephone terminals and methods | Robert Ray Horton, Paul W. Dent | 2000-08-01 |
| 6084544 | Method for determining the location of a GPS receiver using an estimated reference time | — | 2000-07-04 |
| 6070078 | Reduced global positioning system receiver code shift search space for a cellular telephone system | Pambiz Zangi, Rajaram Ramesh | 2000-05-30 |
| 6041222 | Systems and methods for sharing reference frequency signals within a wireless mobile terminal between a wireless transceiver and a global positioning system receiver | Robert Ray Horton | 2000-03-21 |
| 6035202 | Method and apparatus for locating a mobile unit | — | 2000-03-07 |
| 6011323 | Apparatus, method and article of manufacture providing for auxiliary battery conservation in adapters | — | 2000-01-04 |