Title :
A DECT RF transmitter with integrated VCOs suitable for open loop GFSK modulation
Author :
Kromat, O. ; Heinen, S. ; Matter, U. ; Puma, G.L. ; Zannoth, M.
Author_Institution :
Siemens AG, Duesseldorf, Germany
Abstract :
Since the monolithic integration of VCOs complying with the DECT standard seems to be possible, the interaction between circuit parts, such as PLL and biasing, with a fully integrated VCO needs to be studied. This is necessary with the focus on spurious products in the output spectrum and the effect on the open loop modulation of the VCO for the generation of a DECT GFSK modulated signal.
Keywords :
UHF integrated circuits; cordless telephone systems; frequency shift keying; phase noise; radio transmitters; voltage-controlled oscillators; DECT GFSK modulated signal; DECT RF transmitter; integrated VCOs; monolithic integration; open loop GFSK modulation; output spectrum; spurious products; Charge pumps; Circuit testing; Counting circuits; Frequency conversion; Phase frequency detector; Phase locked loops; Radio frequency; Radiofrequency integrated circuits; Transmitters; Voltage-controlled oscillators;
Conference_Titel :
Radio Frequency Integrated Circuits (RFIC) Symposium, 1998 IEEE
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
0-7803-4439-1
DOI :
10.1109/RFIC.1998.682060
