Receiver architecture for new radio systems
US-11863216-B2 · Jan 2, 2024 · US
Method for reducing second order distortion in harmonic rejection mixer
US9325358B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9325358-B2 |
| Application number | US-201414300574-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 10, 2014 |
| Priority date | Jun 10, 2013 |
| Publication date | Apr 26, 2016 |
| Grant date | Apr 26, 2016 |
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Abstract
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The present disclosure relates to a method for reducing second order intermodulation distortion in a harmonic rejection mixer arranged for down-converting a radio frequency signal to an in-phase and a quadrature baseband signal. The method includes adjusting an output current of a first mixer, to reduce the second order intermodulation distortion in the quadrature baseband signal to a first value, and adjusting an output current of a second mixer, to reduce the second order intermodulation distortion in the in-phase baseband signal to a second value.
First claim
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The invention claimed is: 1. A method for reducing second order intermodulation distortion in a harmonic rejection mixer arranged for down-converting a radio frequency signal to an in-phase and a quadrature baseband signal, the harmonic rejection mixer including a plurality of mixers arranged for multiplying the radio frequency signal with a plurality of local oscillator signals, each local oscillator signal having a different phase with respect to the other local oscillator signals, thereby obtaining a plurality of down-converted signals having different phases with respect to each other, a plurality of amplifiers arranged for amplifying each down-converted signal with an amplification factor depending on its phase, and a plurality of summing means for summing the plurality of amplified down-converted signals to produce the in-phase and the quadrature baseband signals, the method comprising: adjusting an output current of a first mixer, to reduce the second order intermodulation distortion in the quadrature baseband signal to a first value, wherein the first mixer is not contributing to the reconstruction of the in-phase baseband signal; and adjusting an output current of a second mixer, to reduce the second order intermodulation distortion in the in-phase baseband signal to a second value, wherein the second mixer is not contributing to the reconstruction of the quadrature baseband signal. 2. The method according to claim 1 , wherein the first value is a minimum of the second order intermodulation distortion in the quadrature baseband signal. 3. The method according to claim 1 , wherein the second value is a minimum of the second order intermodulation distortion in the in-phase baseband signal. 4. The method according to claim 1 , wherein each mixer is a differential mixer. 5. The method according to claim 1 used in a wireless device.
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- What does patent US9325358B2 cover?
- The present disclosure relates to a method for reducing second order intermodulation distortion in a harmonic rejection mixer arranged for down-converting a radio frequency signal to an in-phase and a quadrature baseband signal. The method includes adjusting an output current of a first mixer, to reduce the second order intermodulation distortion in the quadrature baseband signal to a first val…
- Who is the assignee on this patent?
- Imec, Renesas Electronics Corp
- 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 26 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).