Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Kyu-don Choi1
Sung-jae Jung1
Yun-seong Eo1
Heung-bae Lee1
Il-ku Nam1
Joon-hee Lee1
Kwy-ro Lee1
Date of Patent
September 25, 2007
Patent Application Number
11432341
Date Filed
May 12, 2006
Patent Primary Examiner
Patent abstract
A transmitter having a vertical BJT, capable of reducing power consumption, carrier leakage of a local oscillator and an error vector magnitude (EVM), is disclosed. In the transmitter, vertical BJTs implemented by a standard triplex well CMOS process are used in a frequency up-mixer and a baseband analog circuit including a DAC, an LPF, a VGA and a PGA, thereby improving the overall performance of the transmitter.
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