Title :
A quadrature-modulator for 0.6-2.6 GHz with frequency doubler
Author :
Tiiliharju, Esa ; Halonen, Kari
Author_Institution :
Electron. Circuit Design Lab., Helsinki Univ. of Technol., Espoo, Finland
Abstract :
The proposed quadrature-modulator integrates a frequency doubler with a five-stage polyphase filter driven quadrature modulator for single-sideband transmitter applications. Application of a dual-feedback buffering amplifier produces a combination of high output power, low distortion components and power dissipation.
Keywords :
UHF frequency convertors; UHF integrated circuits; bipolar integrated circuits; feedback amplifiers; frequency multipliers; modulators; 0.6 to 2.6 GHz; SSB transmitter applications; SiGe; SiGe bipolar process; double feedback amplifier topology; dual-feedback buffering amplifier; five-stage polyphase filter; frequency doubler; high output power; high sideband suppression; low distortion components; low power dissipation; quadrature modulator; single-sideband transmitter; wideband integrated direct modulator; Bandwidth; Electronic circuits; Frequency synthesizers; High power amplifiers; Impedance matching; Oscillators; Power dissipation; Power generation; Power harmonic filters; Transmitters;
Conference_Titel :
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
Print_ISBN :
0-7803-7448-7
DOI :
10.1109/ISCAS.2002.1010732
