Mixer
US-9197159-B2 · Nov 24, 2015 · US
Switching core layout
US8994435B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8994435-B2 |
| Application number | US-201213490264-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 6, 2012 |
| Priority date | Oct 6, 2010 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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Abstract
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Traditionally, mixers have been arranged symmetrically around the input signal, which has resulted in problems due to self-mixing or feed-through by the local oscillator signal. Here, however, the arrangement for a mixer has been changed to generally avoid self-mixing of the local oscillator signal. In particular, transistors in the switching core are merged according to the portion of the local oscillator signal received. This, in turn, results in the conductors, which carry the different portions of the local oscillator signal, being separated (or not having any crossings) so as to generally eliminate self-mixing or feed-through of the local oscillator signal. Complex IQ mixers realized using this arrangement benefit from improved sideband suppression and image rejection.
First claim
Opening claim text (preview).
The invention claimed is: 1. An apparatus comprising: a first transistor having a control electrode formed over a substrate, a first conduction region formed in the substrate, and a second conduction region formed in the substrate; a second transistor having a control electrode formed over the substrate, a first conduction region formed in the substrate, and a second conduction region formed in the substrate; a third transistor having a control electrode formed over the substr…
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Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US8994435B2 cover?
- Traditionally, mixers have been arranged symmetrically around the input signal, which has resulted in problems due to self-mixing or feed-through by the local oscillator signal. Here, however, the arrangement for a mixer has been changed to generally avoid self-mixing of the local oscillator signal. In particular, transistors in the switching core are merged according to the portion of the loca…
- Who is the assignee on this patent?
- Akhtar Siraj, Texas Instruments Inc
- What technology area does this patent fall under?
- Primary CPC classification H03D7/1458. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 31 2015 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).