Receiver architecture for new radio systems
US-11863216-B2 · Jan 2, 2024 · US
Noise cancellation apparatus and method
US9319084B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9319084-B2 |
| Application number | US-201313861206-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 11, 2013 |
| Priority date | Mar 13, 2013 |
| Publication date | Apr 19, 2016 |
| Grant date | Apr 19, 2016 |
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Abstract
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A noise cancellation structure comprises a trans-impedance stage couple to an output of a mixer of a receiver and a noise cancellation stage connected in parallel with the trans-impedance stage, wherein the noise cancellation stage comprises a first adjustable resistor and a second adjustable resistor connected in series with the first adjustable resistor, wherein the first adjustable resistor and the second adjustable resistor are configured such that the first adjustable resistor has a first resistance variation portion and the second adjustable resistor has a second resistance variation portion equal to the first resistance variation in an opposite direction and a magnitude of the first resistance variation is so selected that differential mode second-order noise and common mode second-order noise cancel each other.
First claim
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What is claimed is: 1. An apparatus comprising: a trans-impedance stage coupled to an output of a mixer of a receiver; a noise cancellation stage connected in parallel with the trans-impedance stage, wherein the noise cancellation stage comprises: a first adjustable resistor; and a second adjustable resistor connected in series with the first adjustable resistor, wherein the first adjustable resistor and the second adjustable resistor are configured such that: the first adju…
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- What does patent US9319084B2 cover?
- A noise cancellation structure comprises a trans-impedance stage couple to an output of a mixer of a receiver and a noise cancellation stage connected in parallel with the trans-impedance stage, wherein the noise cancellation stage comprises a first adjustable resistor and a second adjustable resistor connected in series with the first adjustable resistor, wherein the first adjustable resistor …
- Who is the assignee on this patent?
- Futurewei Technologies Inc
- What technology area does this patent fall under?
- Primary CPC classification H04B1/30. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 19 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).