Abstract: The present subject matter relates to antenna systems, devices, and methods that provide efficient coverage of low frequency bands (e.g., 700 MHz-bands and 600 MHz-bands) for the new generations of mobile communication. For example, a dual-resonant radiating system can include a ground plane, a radiating coupler spaced apart from but in communication with the ground plane, and a ground plane extension in communication with the ground plane. In this arrangement, one or both of the radiating coupler and the ground plane extension are tunable to tune a dual-resonance frequency response.

Abstract: The present subject matter relates to charge pump devices, systems, and methods in which a first plurality of series-connected charge-pump stages is connected between a supply voltage node and a first circuit node, wherein the first plurality of charge-pump stages are operable to produce a first electrical charge at the first circuit node, the first electrical charge having a first polarity; and a second plurality of series-connected charge-pump stages is connected between the supply voltage node and a second circuit node, wherein the second plurality of charge-pump stages are operable to produce a second electrical charge at the second circuit node, the second electrical charge having a second polarity.

Abstract: The present subject matter relates to devices, systems, and methods that provide a programmable filter response in a wireless frequency division duplex system. In particular, in some embodiments, a tunable diplex filter for such a system includes a first tunable filter in communication between an input node and a first output node, the first tunable filter being tunable to define a first tunable pass band configured to have a minimum pass band insertion loss at frequencies that are higher than a first reject band, and a second tunable filter in communication between the input node and a second output node, the second tunable filter being tunable to define a second tunable pass band configured to have a minimum pass band insertion loss at frequencies that are lower than the first reject band.

Abstract: The present subject matter relates to tunable antenna systems and methods in which a tunable band-stop circuit is provided in communication between a signal node and an electrically small antenna having a largest dimension that is substantially equal to or less than one-tenth of a length of a wavelength corresponding to a frequency within a communications operating frequency band. The tunable band-stop circuit can be tunable to adjust a band-stop frequency.

Abstract: Systems, devices, and methods for micro-electro-mechanical system (MEMS) tunable capacitors can include a fixed actuation electrode attached to a substrate, a fixed capacitive electrode attached to the substrate, and a movable component positioned above the substrate and movable with respect to the fixed actuation electrode and the fixed capacitive electrode. The movable component can include a movable actuation electrode positioned above the fixed actuation electrode and a movable capacitive electrode positioned above the fixed capacitive electrode. At least a portion of the movable capacitive electrode can be spaced apart from the fixed capacitive electrode by a first gap, and the movable actuation electrode can be spaced apart from the fixed actuation electrode by a second gap that is larger than the first gap.

Abstract: The present subject matter relates to devices, systems, and methods for controlling an array of two-state elements that can be independently positioned in either first state or a second state. A non-volatile memory in communication with the plurality of two-state elements is configured to receive an input digital control word that addresses a location within the non-volatile memory and to output one of a plurality of array control words stored at the location addressed within the memory to the plurality of two-state elements, wherein the array control word sets a predetermined combination of the plurality of two-state elements to be in the first state and in the second state, and wherein the predetermined combination of the plurality of two-state elements in the first state and in the second state optimally achieves a desired behavior of the array corresponding to the input digital control word.

Abstract: Systems, devices, and methods for tunable filters that are configured to support multiple frequency bands, such as within the field of cellular radio communication, can include a first resonator and a second resonator configured to block signals within one or more frequency ranges, and one or more coupling element connected to both the first resonator and the second resonator. The one or more coupling element can be configured to provide low insertion loss within a pass band.

Abstract: Micro-Electro-Mechanical System (MEMS) structures, methods of manufacture and design structures are disclosed. The method includes forming at least one Micro-Electro-Mechanical System (MEMS) cavity. The method for forming the cavity further includes forming at least one first vent hole of a first dimension which is sized to avoid or minimize material deposition on a beam structure during sealing processes. The method for forming the cavity further includes forming at least one second vent hole of a second dimension, larger than the first dimension.

Abstract: Systems and implementations for inductance tuning systems that are configured to operate in a wide range of frequencies are provided herein. The subject matter described herein can in some embodiments include an inductance tuning system including at least one inductor connected to a first terminal, the at least one inductor comprising of a plurality of inductive elements that are substantially magnetically coupled to each other, wherein spacing between the inductive elements are substantially less than diameters of the windings. At least one capacitor can be connected between one or more of the plurality of inductive elements and a second terminal.

Abstract: The present subject matter relates to antenna systems, devices, and methods that provide efficient coverage of low frequency bands (e.g., 700 MHz-bands and 600 MHz-bands) for the new generations of mobile communication. For example, a dual-resonant radiating system can include a ground plane, a radiating coupler spaced apart from but in communication with the ground plane, and a ground plane extension in communication with the ground plane. In this arrangement, one or both of the radiating coupler and the ground plane extension are tunable to tune a dual-resonance frequency response.

Abstract: Devices and methods of operating partitioned actuator plates to obtain a desirable shape of a movable component of a micro-electro-mechanical system (MEMS) device. The subject matter described herein can in some embodiments include a micro-electro-mechanical system (MEMS) device including a plurality of actuation electrodes attached to a first surface, where each of the one or more actuation electrode being independently controllable, and a movable component spaced apart from the first surface and movable with respect to the first surface. Where the movable component further includes one or more movable actuation electrodes spaced apart from the plurality of fixed actuation electrodes.

Abstract: Systems, devices, and methods for micro-electro-mechanical system (MEMS) tunable capacitors can include a fixed actuation electrode attached to a substrate, a fixed capacitive electrode attached to the substrate, and a movable component positioned above the substrate and movable with respect to the fixed actuation electrode and the fixed capacitive electrode. The movable component can include a movable actuation electrode positioned above the fixed actuation electrode and a movable capacitive electrode positioned above the fixed capacitive electrode. At least a portion of the movable capacitive electrode can be spaced apart from the fixed capacitive electrode by a first gap, and the movable actuation electrode can be spaced apart from the fixed actuation electrode by a second gap that is larger than the first gap.

Abstract: The present subject matter relates to systems and methods for arranging and controlling programmable combinations of tuning elements in which more than one form of switching technology is combined in a single array. Specifically, such an array can include one or more first switchable elements including a first switching technology (e.g., one or more solid-state-controlled devices) and one or more second switchable elements including a second switching technology that is different than the first switching technology (e.g., one or more micro-electro-mechanical capacitors). The one or more first switchable elements and the one or more second switchable elements can be configured, however, to deliver a combined variable reactance.

Abstract: The present subject matter relates to filtering antenna devices, systems, and methods in which a tunable antenna having one or more first variable impedance element is configured to selectively vary an impedance at a signal path output and a tunable filter is in communication between the signal path output of the tunable antenna and a signal processing chain. The tunable filter can have one or more second variable impedance element configured to provide a frequency-selective filtering response between the signal path output and the signal processing chain. A controller in communication with both the tunable antenna and the tunable filter can be configured for selectively tuning an impedance value of one or more of the one or more first variable impedance element or the one or more second variable impedance element.

Abstract: The present subject matter relates to systems, devices, and methods for adaptively tuning antenna elements and/or associated filter elements to support multiple frequency bands. For example, a tunable filter having an input node and an output node can be selectively tunable to define one or more pass bands associated with one or more first signal bands and one or more reject bands associated with one or more second signal bands. The tunable filter can be configured to pass signals having frequencies within the first signal bands between the input node and the output node and to block signals having frequencies within the second signal bands. Furthermore, the tunable filter can be configured to selectively tune the pass bands to have a minimum pass band insertion loss at any of a variety of frequencies, including frequencies that are greater than and less than frequencies within the reject bands.

Abstract: The present subject matter relates to systems and methods for sealing one or more MEMS devices within an encapsulated cavity. A first material layer can be positioned on a substrate, the first material layer comprising a first cavity and a second cavity that each have one or more openings out of the first material layer. At least the first cavity can be exposed to a first atmosphere and sealed while it is exposed to the first atmosphere while not sealing the second cavity. The second cavity can then be exposed to a second atmosphere that is different than the first atmosphere, and the second cavity can be sealed while it is exposed to the second atmosphere.

Abstract: Systems, devices, and methods for tunable filters that are configured to support multiple frequency bands, such as within the field of cellular radio communication, can include a first resonator and a second resonator configured to block signals within one or more frequency ranges, and one or more coupling element connected to both the first resonator and the second resonator. The one or more coupling element can be configured to provide low insertion loss within a pass band.

Abstract: Charge pump systems and methods for the operation thereof can be configured for delivering charge to a primary circuit node. A sequential charging pattern of at least a subset of a series-connected plurality of charge-pump stages connected between a supply voltage node and the primary circuit node can be selectively initiated. For example, the sequential charging pattern can be initiated one time for every N cycles of a given clock signal, wherein N is a selectively adjustable integer value greater than or equal to 1.

Abstract: The present subject matter relates to systems and methods for arranging and controlling programmable combinations of tuning elements in which more than one form of switching technology is combined in a single array. Specifically, such an array can include one or more first switchable elements including a first switching technology (e.g., one or more solid-state-controlled devices) and one or more second switchable elements including a second switching technology that is different than the first switching technology (e.g., one or more micro-electro-mechanical capacitors). The one or more first switchable elements and the one or more second switchable elements can be configured, however, to deliver a combined variable reactance.

Abstract: Systems and methods for direct load impedance computation for a two-port network are disclosed. For a two-port network connected between a first port and a second port, a method can include defining an equivalent PI network including a first equivalent network element in communication with the first port, a second equivalent network element in communication with the second port, and a third equivalent network element connected between the first port and the second port. A linear passive load can be connected to the second port of the two-port network, currents through the linear passive load, the second equivalent network element, and the third equivalent network element can be measured, and a load impedance of the linear passive load can be determined based on predetermined values of a voltage at the first port and a voltage at the second port.