Divide-by-three quadrature frequency divider

H - Electricity – 03 – K

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

H03K 23/40 (2006.01) H03L 7/183 (2006.01)

Patent

CA 2735676

A local oscillator includes a programmable frequency divider coupled to the output of a VCO. The frequency divider can be set to frequency divide by three. Regardless of the divisor, he frequency divider outputs quadrature signals (I, Q) that differ from each other in phase by ninety degrees. To divide by three, the frequency divider includes a divide-by-three frequency divider. The divide-by-three frequency divider includes a divide-by-three circuit, a delay circuit, and a feedback circuit. The divide-by-three circuit frequency divides a signal from the VCO and generates therefrom three signals C, A' and B that differ from each other in phase by one hundred twenty degrees. The delay circuit delays signal A' to generate a delayed version A of the signal A'. The feedback circuit controls the delay circuit such that the delayed version A(I) is ninety degrees out of phase with respect to the signal C (Q).

L'invention concerne un oscillateur local qui comprend un diviseur de fréquence programmable couplé à la sortie d'un VCO. Le diviseur de fréquence peut être réglé sur une division par trois de la fréquence. Indépendamment du diviseur, le diviseur de fréquence émet des signaux en quadrature (I, Q) qui différent les uns des autres en phase de quatre-vingt-dix degrés. Pour diviser par trois, le diviseur de fréquence comprend un diviseur de fréquence par trois. Le diviseur de fréquence par trois comprend un circuit de division par trois, un circuit de retard et un circuit de rétroaction. Le circuit de division par trois divise un signal provenant du VCO, et génère à partir de celui-ci trois signaux C, A' et B qui diffèrent les uns des autres en phase de cent vingt degrés. Le circuit de retard retarde un signal A' pour générer une version retardée A du signal A'. Le circuit de rétroaction contrôle le circuit de retard, de sorte que la version retardée A (I) est hors phase de quatre-vingt-dix degrés par rapport au signal C (Q).

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Divide-by-three quadrature frequency divider does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Divide-by-three quadrature frequency divider, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Divide-by-three quadrature frequency divider will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1496681

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.