US 2021/0242552 A1Published application

Circuits and methods for circulators including a plurality of cancellation paths

AssigneeThe Trustees of Columbia University in the City of New York

InventorsAravind Nagulu, Harish Krishnaswamy

Life of this patent

Estimating the term…

Loading patent…

Abstract

A circulator, comprising: a gyrator having a first side (1S) and a second side (2S) connected to a third port; a first transmission line section (TLS) having a 1 S connected to the 1 S of the gyrator and a 2S connected to a first port; a second TLS having a 1S connected to the first port and having a 2S connected to a second port; a third TLS having a 1S connected to the second port and having a 2S connected to the third port; a first cancellation path (CP) that is connected between the first port and the third port and introduces a current that is 90 degrees out of phase with a first voltage at the first port; and a second CP that is connected between the second port and the third port and introduces a current that is orthogonal to the current introduces by the first CP.

Claims16

Dependent claims

A circulator, comprising:

a gyrator having a first side and having a second side connected to a third port;
a first transmission line section having a first side connected to the first side of the gyrator and a second side connected to a first port;
a second transmission line section having a first side connected to the first port and having a second side connected to a second port;
a third transmission line section having a first side connected to the second port and having a second side connected to the third port;
a first cancellation path that is connected between the first port and the third port and that introduces a current that is 90 degrees out of phase with a first voltage at the first port;
and
a second cancellation path that is connected between the second port and the third port and that introduces a current that is orthogonal to the current introduces by the first cancellation path.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/255,679Filed 11 Jun 2019
Priority: 11 Jun 2018
Published: 5 Aug 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

H01P 1/397
Circulators: using non- reciprocal phase shifters
H03D 7/1441
With transistors: using field-effect transistors
H01P 1/38
Non-reciprocal transmission devices: circulators
H03D 7/1458
With transistors: double balanced arrangements, i.e. where both input signals are differential

Family

Application62/683,541Us provisional application · filed 11 Jun 2018
US 11,205,826 B2Related patent
US 2021/0242552 A1This patent

From the US filing history. Foreign family members aren’t listed.

Timeline

Citations

Open elsewhere

Building an agent or pulling many patents? Use the API or MCP server instead of scraping pages. Get an API key