Abstract: Embodiments of circuits, apparatuses, and systems for a flip-chip power amplifier and impedance matching network are disclosed. Other embodiments may be described and claimed.

Abstract: Embodiments include but are not limited to apparatuses and systems including a quadrature lattice matching network including first path having a series inductor and a shunt inductor, and a second path having a series capacitor and a shunt capacitor. Other embodiments may be described and claimed.

Abstract: Embodiments of circuits, apparatuses, and systems for a quadrature hybrid circuit are disclosed. Other embodiments may be described and claimed.

Abstract: Embodiments of apparatuses, systems and methods relating to a flux-coupled transformer for power amplifier output matching are disclosed. Other embodiments may be described and claimed.

Abstract: Embodiments of an integrated passive device include a high-aspect ratio conductive line positioned on a carrier, a substrate, and a bump that secures the high-aspect ratio conductive line to the substrate.

Abstract: Embodiments of circuits, apparatuses, and systems for a matching network having a switchable capacitor bank are disclosed. Other embodiments may be described and claimed.

Abstract: An output power detection circuit including a detection circuit is disclosed. The output power detection circuit further includes a summing network, wherein a first voltage input of the summing network is capable of receiving a voltage that is proportional with a current flowing through an output stage of an RF amplifier circuit, a second voltage input is coupled with the detection circuit, and an output is capable of providing a summing voltage.

Abstract: A current limiting circuit including a transistor is disclosed. The current limiting circuit is coupled with a voltage and includes a summing network, wherein a first voltage input of the summing network is capable of receiving a voltage that is proportional with the current flowing through the transistor. The current limiting circuit further including a differential circuit, wherein a first input of the differential circuit is coupled with an output of the summing network, a second input of the differential circuit is coupled with a voltage ramp signal, and an output of the differential circuit is coupled with a gate of the transistor. The current limiting circuit still further including a voltage divider network coupled between the drain of the transistor and the second voltage input of the summing network.

Abstract: An improved surface acoustic wave device that utilizes M electrodes per each N transduction length(s) of a transducer that produces a desired net internal distributed reflectivity in both magnitude and phase. Two of the transducers can be made placed on a single substrate and be unidirectional and caused to radiate towards each other to form a filter. A resonator, a delay line, or the like can also be formed.

Abstract: A high stability clock oscillator circuit that has no inductors in the oscillator circuit itself. In the preferred embodiment neither the collector, the base, nor the emitter of the transistor is grounded and the oscillator output is taken from the collector of the transistor. In an alternate embodiment the collector is AC grounded and the output is taken across a load resistor coupled between the emitter of the transistor and ground. The resulting oscillator is a high stability oscillator that can be used as a dock oscillator in high frequency circuits.

Abstract: An acoustic wave device in which the propagation path of the surface acoustic wave device is folded to increase the wave propagation path length in order to make better use of the total chip space.

Abstract: An RF signal amplifier comprising a single stage of amplification coupled through a first switch to the input of a SAW delay line and, after the SAW delay line is charged, through a second switch to the input RF amplifier for second amplification with the output of the RF amplifier being coupled through said first switch to an output terminal.

Abstract: A novel surface acoustic wave device that includes a multiple track transducer having a first portion for generating a transverse symmetrical mode acoustic wave and a second portion for receiving only a transverse nonsymmetrical surface acoustic wave such that substantially no direct coupling occurs between the first and second portions of the multiple track transducer and where reflector gratings are mode changing gratings that reflect the transverse symmetrical wave as a transverse nonsymmetrical wave that is received by the second portion of the multiple track transducer thereby substantially reducing undesired in-band surface acoustic wave transducer responses as well as spurious bulk responses and allowing a narrow passband to be obtained with a short structure when compared with the prior art structures.

Abstract: An improved surface acoustic wave grating structure that utilizes four electrodes per 3.lambda./2 or 5.lambda./2 transduction length of a reflector grating structure that produces a desired net internal distributed reflectivity in both magnitude and phase.

Abstract: A reflectionless surface acoustic wave transducer is proposed which has first and second opposed conductive transducer pads on a substrate of piezo-electric material. A plurality of groups of n interdigitated .lambda./4 electrodes extend from the opposed pads to form an elongated transducer. Each group of n interdigitated electrodes has a spacing within the group of .lambda./4 and the spaces between adjacent groups of the interdigitated electrodes are .lambda./2 such that adjacent groups cancel reflections from each other thereby establishing a reflectionless surface acoustic wave transducer.

Abstract: A surface acoustic wave resonator device having a resonant cavity formed on a substrate between a transducer and its related grating that causes a symmetric frequency response with one major resonant frequency response and low spurious frequency responses, with no etched grooves or recessed electrodes, with a minimum electrode geometry of .lambda./4, with single level fabrication and uniform wave velocity throughout the structure and being frequency insensitive to electrode reflections.

Abstract: A notch filter which utilizes a quadrature coupler with the input signal on one of its four terminals, a first tuned surface acoustic wave device coupled to a second on of the terminals for receiving the input signal at 0.degree. phase shift, a second tuned surface acoustic wave device coupled to a third one of the terminals for receiving the input signal with a 90.degree. phase shift and the fourth terminal being utilized as the output signal terminal.

Abstract: An ST cut quartz crystal for surface acoustic wave device application defined by the Euler angles lambda (.lambda.) equal about 0.degree., mu (.mu.) equal about 132.75.degree. and with an acoustic wave propagation direction theta (.theta.) equal about plus or minus 25.degree..

Abstract: A resonator, resonator filter having an output transducer of typical design and conductance response and an input transducer whose conductance response can be adjusted to offset adverse conductance response of said output transducer thereby providing a unique improved overall conductance response of the resonator, resonator filter.

Abstract: An acoustic wave signal processing device which in a preferred embodiment utilizes at least one holographic grating formed within a portion of the interior of a substrate which is capable of supporting the propagation of bulk acoustic wave signals therein. The grating provides spatially varying acoustic impedances within the substrate and interacts with bulk acoustic wave signals propagated therethrough so as to produce output acoustic wave signals. The grating and transducers for producing and receiving the input and output bulk acoustic wave signals, respectively, can be arranged to provide a variety of signal processing operations which may be desired, such as providing resonating operations and filter operations, for example.