| NL57174C
              (en:Method)
            
            * | 1938-12-02 |  |  |  | 
        
          | GB566169A
              (en)
            
            * | 1942-07-03 | 1944-12-18 | Standard Telephones Cables Ltd | Improvements relating to radio navigational systems | 
        
          | US2615986A
              (en)
            
            * | 1948-01-20 | 1952-10-28 | Meguer V Kalfaian | Phase modulation system | 
        
          | US2611825A
              (en)
            
            * | 1948-04-28 | 1952-09-23 | Donald B Harris | Multichannel transmission system | 
        
          | US7327803B2
              (en) | 2004-10-22 | 2008-02-05 | Parkervision, Inc. | Systems and methods for vector power amplification | 
        
          | US7355470B2
              (en)
            
            * | 2006-04-24 | 2008-04-08 | Parkervision, Inc. | Systems and methods of RF power transmission, modulation, and amplification, including embodiments for amplifier class transitioning | 
        
          | US7911272B2
              (en) | 2007-06-19 | 2011-03-22 | Parkervision, Inc. | Systems and methods of RF power transmission, modulation, and amplification, including blended control embodiments | 
        
          | US20130078934A1
              (en) | 2011-04-08 | 2013-03-28 | Gregory Rawlins | Systems and Methods of RF Power Transmission, Modulation, and Amplification | 
        
          | US9106316B2
              (en) | 2005-10-24 | 2015-08-11 | Parkervision, Inc. | Systems and methods of RF power transmission, modulation, and amplification | 
        
          | US8334722B2
              (en) | 2007-06-28 | 2012-12-18 | Parkervision, Inc. | Systems and methods of RF power transmission, modulation and amplification | 
        
          | US8031804B2
              (en) | 2006-04-24 | 2011-10-04 | Parkervision, Inc. | Systems and methods of RF tower transmission, modulation, and amplification, including embodiments for compensating for waveform distortion | 
        
          | US7937106B2
              (en) | 2006-04-24 | 2011-05-03 | ParkerVision, Inc, | Systems and methods of RF power transmission, modulation, and amplification, including architectural embodiments of same | 
        
          | US7620129B2
              (en) | 2007-01-16 | 2009-11-17 | Parkervision, Inc. | RF power transmission, modulation, and amplification, including embodiments for generating vector modulation control signals | 
        
          | WO2008144017A1
              (en) | 2007-05-18 | 2008-11-27 | Parkervision, Inc. | Systems and methods of rf power transmission, modulation, and amplification | 
        
          | WO2008156800A1
              (en) | 2007-06-19 | 2008-12-24 | Parkervision, Inc. | Combiner-less multiple input single output (miso) amplification with blended control | 
        
          | KR20140034895A
              (ko) | 2011-06-02 | 2014-03-20 | 파커비전, 인크. | 안테나 제어 | 
        
          | CN106415435B
              (zh) | 2013-09-17 | 2020-08-11 | 帕克维辛股份有限公司 | 用于呈现信息承载时间函数的方法、装置和系统 | 
        
          | DE102016220349A1
              (de) | 2016-10-18 | 2018-04-19 | Trumpf Schweiz Ag | Hochfrequenztreiberschaltung für eine akustooptische Komponente und Verfahren zum Betrieb einer HF-Treiberschaltung |