Feedback loop with adjustable bandwidth
First Claim
Patent Images
1. In an electrical device having a variable output, a feedback loop for adjusting the variable output, the feedback loop comprising:
- at least one adjustable zero element.
2 Assignments
0 Petitions
Accused Products
Abstract
A feedback loop with an adjustable closed loop frequency response. The feedback loop contains adjustable pole (212, 213) and adjustable zero elements (220,221) for changing the pole and/or zero locations in the feedback loop'"'"'s loop frequency response thereby changing the closed loop frequency response of the feedback loop. In one embodiment, the feedback loop is a Cartesian feedback loop suitable for use in a radio transmitter.
-
Citations
20 Claims
-
1. In an electrical device having a variable output, a feedback loop for adjusting the variable output, the feedback loop comprising:
at least one adjustable zero element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
13. In a feedback loop having an loop and a closed loop frequency response, the loop frequency response having at least one pole and the closed loop frequency response being characterized by a closed loop bandwidth, a method comprising the steps of:
moving a pole in the loop frequency response yielding a change in the closed loop frequency response. - View Dependent Claims (14, 15, 16, 17)
-
18. An integrated circuit implementing substantially all the components of a feedback loop with adjustable frequency response, the integrated circuit comprising:
at least one adjustable pole element for implementing an adjustable pole in the forward path of the feedback loop. - View Dependent Claims (19)
-
20. A feedback loop having a forward path and a feedback path comprising:
-
at least one adjustable pole element in the forward path of the feedback loop;
at least one adjustable zero element in the forward path of the feedback loop;
a power amplifier in the forward path of the feedback loop;
a first mixer in the forward path of the feedback loop; and
a second mixer in the feedback path of the feedback loop.
-
Specification