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Special attention will be paid to the role of AM modulation nonlinearity and parasitic AM-to-PM conversion, once architecture mechanisms such as time-delay mismatch between branches or limited bandwidth in the amplitude path are controlled. The device limiting factors for a highly efficient switched mode operation and a linear amplitude modulation will be identified. Some circuit design and implementation guidelines for the RF modulating stage and the envelope amplifier will be discussed, to finish with system-level analysis considerations under two-tone and real communication signal excitations.<\/jats:p>","DOI":"10.1017\/s1759078709000105","type":"journal-article","created":{"date-parts":[[2009,3,19]],"date-time":"2009-03-19T11:04:36Z","timestamp":1237460676000},"page":"109-116","source":"Crossref","is-referenced-by-count":3,"title":["Nonideality sources and implementation considerations in polar transmitters"],"prefix":"10.1017","volume":"1","author":[{"given":"Jos\u00e9 A.","family":"Garc\u00eda","sequence":"first","affiliation":[]},{"given":"Jos\u00e9 C.","family":"Pedro","sequence":"additional","affiliation":[]},{"given":"Pedro Miguel","family":"Cabral","sequence":"additional","affiliation":[]},{"given":"Christian","family":"Fager","sequence":"additional","affiliation":[]},{"given":"Hossein Mashad","family":"Nemati","sequence":"additional","affiliation":[]},{"given":"Anding","family":"Zhu","sequence":"additional","affiliation":[]},{"given":"Paolo","family":"Colantonio","sequence":"additional","affiliation":[]}],"member":"56","published-online":{"date-parts":[[2009,3,19]]},"reference":[{"key":"S1759078709000105_ref2","doi-asserted-by":"publisher","DOI":"10.1109\/22.556466"},{"key":"S1759078709000105_ref4","doi-asserted-by":"publisher","DOI":"10.1109\/TMTT.2005.843500"},{"key":"S1759078709000105_ref1","doi-asserted-by":"publisher","DOI":"10.1109\/JRPROC.1952.273844"},{"key":"S1759078709000105_ref9","doi-asserted-by":"crossref","unstructured":"[9] Pedro J.C. ; Garc\u00eda J.A. ; Cabral P.M. : Nonlinear distortion analysis of polar transmitters, in 2007 IEEE MTT-S Int. 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