Multistage frequency conversion
A receiver for frequency down converting a radio frequency signal using a multistage frequency (down) conversion. The radio frequency signal having a center frequency that is comprised in one of at least two frequency bands, comprises oscillating means for generating a first mixing signal having a f...
Gespeichert in:
1. Verfasser: | |
---|---|
Format: | Patent |
Sprache: | eng |
Online-Zugang: | Volltext bestellen |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | A receiver for frequency down converting a radio frequency signal using a multistage frequency (down) conversion. The radio frequency signal having a center frequency that is comprised in one of at least two frequency bands, comprises oscillating means for generating a first mixing signal having a first frequency. And also a frequency divider arranged to derive a second mixing signal from the first mixing signal. The receiver further comprising a first mixer arranged to down-convert the radio frequency signal to a first lower frequency signal using the first mixing signal and a second mixer arranged to down-convert the first low frequency signal to a second lower frequency signal using the second mixing signal. Wherein the division factor of the frequency divider and a ratio between the center frequency and the first frequency are determined by the one of at least two frequency bands. Similarly a transmitter can transmit a radio frequency signal by using multistage frequency (up) conversion. |
---|