Title :
K-Band Frequency Synthesizer with Subharmonic Signal Generation and LTCC Frequency Tripler
Author :
Baras, Torben ; Jacob, Arne F.
Author_Institution :
Inst. fur Hochfrequenztech., Tech. Univ., Hamburg
Abstract :
A subsystem implementation study of a fractional-N frequency synthesizer for K-band satellite communications is presented. The architecture is based on a subharmonic frequency generation implemented with commercially available voltage-controlled oscillator, phase-locked loop chip and a custom designed frequency tripler implemented in low temperature cofired ceramics with vertical integration techniques. As a key component, the frequency multiplier is analyzed in terms of conversion efficiency and suppression of undesired harmonic signals. With the entire subsystem, a reference-stabilized signal in the range of 19...21 GHz with phase noise of -80dBc/Hz at 10 kHz offset and a 25 kHz channel spacing is achieved. The output power is -1 dBm and the spectral purity better than 25 dBc over the entire range. With the presented approach it is demonstrated that the employed technology can be used to successfully design customized, packaged modules and subsystems in the upper microwave frequency range.
Keywords :
channel spacing; frequency multipliers; frequency synthesizers; harmonics suppression; phase locked loops; satellite communication; voltage-controlled oscillators; K-band frequency synthesizer; K-band satellite communications; LTCC frequency tripler; channel spacing; conversion efficiency; custom designed frequency tripler; fractional-N frequency synthesizer; frequency 10 kHz; frequency 25 kHz; frequency multiplier; harmonic signal suppression; low temperature cofired ceramics; packaged modules; phase noise; phase-locked loop chip; spectral purity; subharmonic frequency generation; subharmonic signal generation; upper microwave frequency range; vertical integration techniques; voltage-controlled oscillator; Ceramics; Frequency conversion; Frequency synthesizers; Harmonic analysis; K-band; Phase locked loops; Satellite communication; Signal generators; Temperature; Voltage-controlled oscillators;
Conference_Titel :
Microwave Integrated Circuit Conference, 2008. EuMIC 2008. European
Conference_Location :
Amsterdam
Print_ISBN :
978-2-87487-007-1
DOI :
10.1109/EMICC.2008.4772330