US 12,126,317 B1
Folded-patch impedance transformer
Jabra Tarazi, Marayong (AU); Anthony Peter Fattorini, Petersham (AU); and Niels Kramer, 's-Hertogenbosch (NL)
Assigned to ALTUM RF IP B.V., De Zaale (NL)
Filed by Altum RF IP B.V., Eindhoven (NL)
Filed on Jul. 28, 2020, as Appl. No. 16/940,980.
Claims priority of provisional application 62/968,376, filed on Jan. 31, 2020.
Int. Cl. H01F 27/28 (2006.01); H01F 38/00 (2006.01); H03F 1/56 (2006.01); H03H 3/00 (2006.01); H03H 7/38 (2006.01)
CPC H03H 7/38 (2013.01) [H01F 27/2804 (2013.01); H01F 38/00 (2013.01); H03F 1/565 (2013.01); H03H 3/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a substrate;
a first patch transformer segment comprising a first rectangular metal feature disposed on said substrate, wherein the first rectangular metal feature comprises a first portion and a second portion, and a width of the second portion is greater than a width of the first portion and a length of the second portion;
a second patch transformer segment comprising a second rectangular metal feature disposed on said substrate, wherein (i) the second rectangular metal feature is aligned with the second portion of the first rectangular metal feature, (ii) a length of the second rectangular metal feature matches the length of the second portion of the first rectangular metal feature, and (iii) a width of the second rectangular metal is greater than the length of the second rectangular metal feature;
a third patch transformer segment comprising a third rectangular metal feature disposed on said substrate between a first adjacent edge of the second portion of the first rectangular metal feature and a second adjacent edge of the second rectangular metal feature, wherein (i) the third rectangular metal feature comprises a first portion and a second portion, (ii) a first edge of the third rectangular metal feature is edge-coupled with the first adjacent edge of the second portion of the first patch transformer segment, and (iii) a second edge of the third rectangular metal feature is edge-coupled with the second adjacent edge of the second patch transformer segment;
a fourth patch transformer segment comprising a fourth rectangular metal feature disposed on said substrate and connecting a first corner of the first adjacent edge of the second portion of the first rectangular metal feature to a first corner of the second adjacent edge of the second rectangular metal feature; and
a fifth patch transformer segment comprising a fifth rectangular metal feature disposed on said substrate and connecting a second corner of the second adjacent edge of the second rectangular metal feature to a first corner of the second edge of the first portion of the third rectangular metal feature, wherein the second portion of the third rectangular metal feature passes over and is separated from the fourth rectangular metal feature such that the first patch transformer segment, the second patch transformer segment, the third patch transformer segment, the fourth patch transformer segment, and the fifth patch transformer segment are coupled in series to form a folded path between a first port and a second port.