POLYPHASE HARMONIC REJECTION MIXER
First Claim
1. A polyphase harmonic rejection mixer, comprising:
- a plurality of stages following each other;
whereina first stage is arranged to perform at least frequency conversion; and
a second stage is arranged to perform at least selective weighting and combining;
wherein at least two of the stages are arranged to perform at least combining.
10 Assignments
0 Petitions
Accused Products
Abstract
A polyphase harmonic rejection mixer, comprising a plurality of stages following each other; wherein a first stage is arranged to perform at least frequency conversion; and a second stage is arranged to perform at least selective weighting and combining; wherein at least two of the plurality of stages are arranged to perform at least combining. In an embodiment, the first stage (28) comprises three single-ended gain blocks (10, 12, 14), arranged to perform selective weighting, frequency conversion and combining; and a second stage (30) following the first stage (28) and arranged to perform selective weighting and combining. The second stage (30) may reduce the number of phases output by the first stage (28) and may output (32) a complex differential down converted signal. The mixer may be directly interfaced to an antenna of an LNA-less receiver without weighting in the first stage. The mixer may be included in a software-defined radio.
14 Citations
15 Claims
-
1. A polyphase harmonic rejection mixer, comprising:
-
a plurality of stages following each other;
whereina first stage is arranged to perform at least frequency conversion; and a second stage is arranged to perform at least selective weighting and combining; wherein at least two of the stages are arranged to perform at least combining. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A method of polyphase harmonic rejection mixing, the method comprising:
-
a first stage performing at least frequency conversion; and a second stage performing at least selective weighting and combining; wherein at least two stages perform at least combining. - View Dependent Claims (14, 15)
-
Specification