LINEAR ROW ARRAY INTEGRATED POWER COMBINER FOR RF POWER AMPLIFIERS
First Claim
1. An integrated circuit transformer, comprising:
- a semiconductor substrate for supporting a plurality of layers of an integrated circuit;
a plurality of substantially octagon shaped outer primary windings configured in a linear array pattern;
a plurality of substantially octagon shaped inner primary windings, each inner primary winding routed inside a respective outer primary winding, each outer primary winding electrically coupled to its respective inner primary winding at an input terminal; and
a substantially octagon shaped secondary winding routed between each outer primary winding and inner primary winding, each secondary routing electrically coupled to its neighbor, said routing adapted to maximize power coupling and impedance transformation from said primary windings to said secondary winding.
1 Assignment
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Accused Products
Abstract
A novel and useful radio frequency (RF) front end module (FEM) circuit that provides high linearity and power efficiency and meets the requirements of modern wireless communication standards such as 802.11 WLAN, 3G and 4G cellular standards, Bluetooth, ZigBee, etc. The configuration of the FEM circuit permits the use of common, relatively low cost semiconductor fabrication techniques such as standard CMOS processes. The FEM circuit includes a power amplifier made up of one or more sub-amplifiers having high and low power circuits and whose outputs are combined to yield the total desired power gain. An integrated multi-tap transformer having primary and secondary windings arranged in a novel configuration provide efficient power combining and transfer to the antenna of the power generated by the individual sub-amplifiers.
11 Citations
27 Claims
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1. An integrated circuit transformer, comprising:
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a semiconductor substrate for supporting a plurality of layers of an integrated circuit; a plurality of substantially octagon shaped outer primary windings configured in a linear array pattern; a plurality of substantially octagon shaped inner primary windings, each inner primary winding routed inside a respective outer primary winding, each outer primary winding electrically coupled to its respective inner primary winding at an input terminal; and a substantially octagon shaped secondary winding routed between each outer primary winding and inner primary winding, each secondary routing electrically coupled to its neighbor, said routing adapted to maximize power coupling and impedance transformation from said primary windings to said secondary winding. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An integrated circuit transformer, comprising:
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a semiconductor substrate for supporting a plurality of layers of an integrated circuit; a plurality of substantially octagon shaped outer primary windings configured in a linear array pattern, the first and last outer primary windings having an inductance L with remaining outer primary windings having an inductance L+Δ
L;a plurality of substantially octagon shaped inner primary windings, each inner primary winding routed inside a respective outer primary winding, each outer primary winding electrically coupled to its respective inner primary winding at an input terminal, the first and last inner primary windings having an inductance L with remaining inner primary windings having an inductance L+Δ
L; anda substantially octagon shaped secondary winding routed between each outer primary winding and inner primary winding, each secondary routing electrically coupled to its neighbor, said routing adapted to maximize power coupling and impedance transformation from said primary windings to said secondary winding. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A integrated circuit transformer, comprising:
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a semiconductor substrate for supporting a plurality of layers of an integrated circuit; a plurality of substantially rectangular shaped outer primary windings configured in a linear array pattern, the first and last primary windings having an inductance L with remaining primary windings having an inductance L+Δ
L; anda substantially rectangular shaped secondary winding routed around the perimeter of said primary windings, said routing adapted to maximize power coupling and impedance transformation from said primary windings to said secondary winding. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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Specification