Radio Frequency Input/Output for Radio Transceivers
US-2019190560-A1 · Jun 20, 2019 · US
Wideband coupled input impedance matching LNA architecture
US12418266B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12418266-B2 |
| Application number | US-202217855443-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 30, 2022 |
| Priority date | Jun 30, 2022 |
| Publication date | Sep 16, 2025 |
| Grant date | Sep 16, 2025 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
Circuits and methods for a radio frequency amplifier, such as an LNA, that include a wideband coupled input impedance matching network. One embodiment includes a first inductor coupled between a first terminal and a first node, the first terminal couplable to a degeneration terminal of an amplifier core; a second inductor coupled between a second terminal and either the first node or a second node, the second terminal couplable to an input terminal of the amplifier core; a third inductor coupled between the first node and a third terminal, the third terminal couplable to a reference potential; and, in a variant embodiment, a fourth inductor coupled between the second node and a fourth terminal, the fourth terminal couplable to the reference potential; wherein the first inductor and the second inductor are mutually coupled. Some embodiments allow multiple modes to allow tradeoffs of gain versus linearity and NF characteristics.
First claim
Opening claim text (preview).
What is claimed is: 1. A wideband coupled input impedance matching network including: (a) a first inductor coupled between a first terminal and a first node, the first terminal configured to be coupled to a degeneration terminal of an amplifier core; (b) a second inductor coupled between a second terminal and the first node, the second terminal configured to be coupled to an input terminal of the amplifier core; and (c) a third inductor coupled between the first node and a third terminal, the third terminal configured to be coupled to a reference potential; wherein the first inductor and the second inductor are mutually coupled. 2. The invention of claim 1 , wherein the mutual coupling of the first inductor and the second inductor is negative. 3. The invention of claim 1 , wherein the mutual coupling of the first inductor and the second inductor is positive. 4. The invention of claim 1 , wherein the amplifier core, the first inductor, and the second inductor are co-fabricated on an integrated circuit die. 5. The invention of claim 1 , wherein the amplifier core is fabricated on an integrated circuit die, and the first inductor and the second inductor are located external to the integrated circuit die. 6. The invention of claim 1 , wherein the first inductor comprises a plurality of parallel inductances. 7. The invention of claim 1 , wherein the first inductor and the second inductor comprise mutually coupled segments of an integrated circuit transformer coil. 8. The invention of claim 1 , wherein the first inductor comprises a first selectable inductance coupled in series with a second selectable inductance. 9. The invention of claim 8 , wherein the second inductor and the first selectable inductance are mutually coupled in a first selectable state, and the second inductor and a series sum of the first and second selectable inductances are mutually coupled in a second selectable state. 10. The invention of claim 1 , further including a series inductor coupled between the input terminal of the amplifier core and a radio frequency input terminal of the amplifier core, wherein the second terminal of the wideband input impedance matching network is configured to be coupled to the input terminal of the amplifier core through the series inductor.
Assignees
Inventors
Classifications
Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal · CPC title
the amplifier being a low noise amplifier [LNA] · CPC title
the amplifier being a radio frequency amplifier · CPC title
the gated amplifier being switched on or off by putting into parallel or not, by choosing between amplifiers by (a ) switch(es) · CPC title
in integrated circuits · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US12418266B2 cover?
- Circuits and methods for a radio frequency amplifier, such as an LNA, that include a wideband coupled input impedance matching network. One embodiment includes a first inductor coupled between a first terminal and a first node, the first terminal couplable to a degeneration terminal of an amplifier core; a second inductor coupled between a second terminal and either the first node or a second n…
- Who is the assignee on this patent?
- Murata Manufacturing Co
- What technology area does this patent fall under?
- Primary CPC classification H03F1/565. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Sep 16 2025 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).