A method of making a slow wave inductive structure includes depositing a first dielectric layer over a first substrate. The method further includes forming a first conductive winding in the first dielectric layer. The method further includes bonding a second substrate to the first dielectric layer, wherein the second substrate is physically separated from the first conductive winding, and the second substrate has a thickness ranging from about 50 nanometers (nm) to about 150 nm. The method further includes depositing a second dielectric layer over the second substrate. The method further includes forming a second conductive winding in the second dielectric layer, wherein the second substrate is physically separated from the second conductive winding.

A tunable inductor arrangeable on a chip or substrate comprises a first winding part connected at one end to a first input of the tunable inductor arrangement, a second winding part connected at one end to the other end of the first winding part, a third winding part connected at one end to a second input of the tunable inductor arrangement, a fourth winding part connected at one end to the other end of the third winding part, and a switch arrangement arranged. The switch arrangement tunes the tunable inductor by selectively connecting the first and fourth winding parts in parallel and the second and third winding parts in parallel, with the parallel couplings in series between the first and second inputs, or connecting the first, second, fourth and third winding parts in series between the first and second inputs. Corresponding transceivers, communication devices, methods and computer programs are disclosed.

A transformer has a first inductor that includes a first port. The transformer also has a second inductor magnetically coupled to the first inductor. The second inductor includes a second port. The second inductor includes a first portion configured to permit current flow in a clockwise direction and a second portion configured to permit current flow in a counter-clockwise direction. The transformer also has a third inductor magnetically coupled to the first inductor. The third inductor includes a third port. The counter-clockwise direction is opposite the clockwise direction to reduce magnetic coupling between the second inductor and the third inductor based on magnetic coupling cancellation.

An electrical device comprises a substrate, a first dielectric layer, a first die, an adjustable inductor and a second die. The substrate has a first surface. The first dielectric layer is disposed on the first surface of the substrate and has a first surface. The first die is surrounded by the first dielectric layer. The adjustable inductor is electrically connected to the first die. The adjustable inductor comprises a plurality of pillars surrounded by the first dielectric layer, a plurality of first metal strips disposed on the first surface of the first dielectric layer and electrically connected to the pillars, and a plurality of second metal strips disposed on the first surface of the first dielectric layer and electrically connected to the pillars. A width of at least one of the second metal strips is different than a width of at least one of the first metal strips. The second die is electrically connected to the adjustable inductor.

Apparatus implementing various structures to decrease the distance between two inductive elements for tuning an inductance with greater variability (a wider tuning range). One example integrated circuit (IC) package generally includes a laminate, a solder resist layer disposed on an upper surface of the laminate, and a semiconductor die disposed above the laminate and comprising a first inductor. At least a portion of a second inductor is disposed above a section of the solder resist layer, the first inductor at least partially overlaps the second inductor, and there is a gap between the first inductor and the second inductor.

An inductor is disclosed that includes an arrangement of lobes, each of the lobes in the arrangement of lobes including a generator, the arrangement of lobes interconnected such that, when currents are provided by each generator in the arrangement of lobes, each lobe in the arrangement of lobes produces a magnetic field with a defined polarity relative to the arrangement of lobes. When the arrangement of lobes are appropriately interconnected, the magnetic field from the arrangement of lobes can be canceled.

The present disclosure describes aspects of a switchable inductor network for wideband circuits. In some aspects, the switchable inductor network provides selectable inductance. The switchable inductor network includes a first coil and a second coil that includes a first inductive segment and a second inductive segment. Connection points of the second coil connect the second coil across a portion of the first coil. The switchable inductor network also includes a switch connected between the first inductive segment and the second inductive segment of the second coil. The switch is configured to change the selectable inductance of the switchable inductor network by selectively coupling the first inductive segment to the second inductive segment of the second coil in response to a control signal.

A variable inductor which comprises a primary conductor, first and second secondary conductors and one or more switch. The primary conductor has a first node and a second node, wherein the first node is used to connect a first external component and the second node is used to connect a second external component. The first and second secondary conductors magnetically couple to the primary conductor. The one or more switch has two sides connected to the first or second secondary conductor, respectively. The first and second secondary conductors are formed a single-loop structure with two or more changeable current paths which are operated by the states of the one or more switch. An integrated circuit using the variable inductor is also introduced.

A tunable inductor arrangeable on a chip or substrate comprises a first winding part connected at one end to a first input of the tunable inductor arrangement, a second winding part connected at one end to the other end of the first winding part, a third winding part connected at one end to a second input of the tunable inductor arrangement, a fourth winding part connected at one end to the other end of the third winding part, and a switch arrangement arranged. The switch arrangement tunes the tunable inductor by selectively connecting the first and fourth winding parts in parallel and the second and third winding parts in parallel, with the parallel couplings in series between the first and second inputs, or connecting the first, second, fourth and third winding parts in series between the first and second inputs. Corresponding transceivers, communication devices, methods and computer programs are disclosed.

A variable inductor comprises a primary conductor, a first secondary conductor and one or more switch. The primary conductor has a first node and a second node, wherein the first node is used to connect a first external component and the second node is used to connect a second external component. The first secondary conductor magnetically couples to the primary conductor. The one or more switch has two sides connected to the first secondary conductor, respectively. The first secondary conductor is formed a single-loop structure with two or more changeable current paths which are operated by the states of the one or more switch. An integrated circuit using the variable inductor is also introduced.