| Autor: |
Jun-Gi Jo, Jong-Ho Lee, Dojin Park, Young Gun Pu, Sung-Cheol Shin, Kang-Yoon Lee, Sung-Eon Park, Suk-Joong Lee, Changsik Yoo |
| Předmět: |
|
| Zdroj: |
IEEE Transactions on Microwave Theory & Techniques; Apr2009 Part 2 of 2, Vol. 57 Issue 4, p919-927, 9p, 11 Diagrams, 3 Charts, 6 Graphs |
| Abstrakt: |
A dual-mode RF receiver with low-IF architecture has been developed for L1-band global positioning system (GPS) and Galileo system in a 0.18-μm CMOS process. The channel-selecting bandpass filter centered at 4.092 MHz has programmable band- width (2.046 MHz, 4.092 MHz), which allows the reception of GPS and Galileo signals. A fractional-N phase-locked loop generates the local oscillator signals, which allows multiple reference clock frequencies, and in turn, share of a reference oscillator with other systems. The noise figure of the receiver is 4.5 dB, while consuming 41.4 mW from a 1.8-V supply. The image signal is rejected by more than 34 dB. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
