Title :
A wideband modulated frequency synthesizer for enhanced Bluetooth applications
Author :
Li, Chien-Jung ; Horng, Tzyy-Sheng ; Peng, Kang-Chun
Author_Institution :
Dept. of Electr. Eng., National Sun Yat-Sen Univ., Kaohsiung, Taiwan
Abstract :
In this paper, a wideband modulated frequency synthesizer is proposed for enhanced Bluetooth applications. The analog baseband signal directly modulates the voltage-controlled oscillator (VCO) in a closed phase-locked loop (PLL). To compensate the PLL´s inherent high-pass filter response that distorts the modulated signal, a pre-distortion filter is designed and built with the transmit filter. The simulated results show that the proposed modulated frequency synthesizer can achieve an enhanced data rate (EDR) as high as 6 Mb/s with only 3.17% in FSK error.
Keywords :
Bluetooth; frequency shift keying; frequency synthesizers; high-pass filters; phase locked loops; voltage-controlled oscillators; 6 Mbit/s; FSK error; GFSK modulation; analog baseband signal; closed phase-locked loop; enhanced Bluetooth applications; enhanced data rate; high-pass filter; modulated frequency synthesizer; modulated signal; pre-distortion filter; transmit filter; voltage-controlled oscillator; wideband frequency synthesizer; Baseband; Bluetooth; Distortion; Filters; Frequency modulation; Frequency synthesizers; Phase locked loops; Phase modulation; Voltage-controlled oscillators; Wideband; Enhanced Bluetooth; GFSK modulation; modulated frequency synthesizer; pre-distortion filter;
Conference_Titel :
Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings
Print_ISBN :
0-7803-9433-X
DOI :
10.1109/APMC.2005.1607083
