Xi F Li

US Patent:

20200144976, May 7, 2020

Filed:

Nov 1, 2018

Appl. No.:

16/177790

Inventors:

- Santa Clara CA, US
Chuanzhao Yu - Phoenix AZ, US
Chintan Thakkar - Portland OR, US
Saeid Daneshgar - Portland OR, US
Hyun Yoon - Gilbert AZ, US
Xi Li - Chandler AZ, US
Anandaroop Chakrabarti - Hillsboro OR, US
Stefan Shopov - Portland OR, US

International Classification:

H03F 3/60
H01F 17/00
H03H 7/42
H01F 27/29
H03F 3/45

Abstract:

An on-chip transformer circuit is disclosed. The on-chip transformer circuit comprises a primary winding circuit comprising at least one turn of a primary conductive winding arranged as a first N-sided polygon in a first dielectric layer of a substrate; and a secondary winding circuit comprising at least one turn of a secondary conductive winding arranged as a second N-sided polygon in a second, different, dielectric layer of the substrate. In some embodiments, the primary winding circuit and the secondary winding circuit are arranged to overlap one another at predetermined locations along the primary conductive winding and the secondary conductive winding, wherein the predetermined locations comprise a number of locations less than all locations along the primary conductive winding and the secondary conductive winding.