Abstract: Narrow band tunable radio frequency (RF) power amplifiers (PAs) and related methods are disclosed that provide narrow band tunable gain responses, such as linear gain responses, that can be selected for different frequency bands. The narrow band tunable PAs thereby provide out-of-band rejection for different selectable frequency bands so that narrow band filters are not required in the transmit input path for communication devices. The pass band location and/or bandwidth for the narrow band gain response can be tuned using different techniques, as desired. The narrow band tunable PAs can also be fabricated using CMOS processing, if desired, so that a CMOS PA integrated circuit is provided.

Abstract: Narrow band tunable radio frequency (RF) power amplifiers (PAs) and related methods are disclosed that provide narrow band tunable gain responses, such as linear gain responses, that can be selected for different frequency bands. The narrow band tunable PAs thereby provide out-of-band rejection for different selectable frequency bands so that narrow band filters are not required in the transmit input path for communication devices. The passband location and/or bandwidth for the narrow band gain response can be tuned using different techniques, as desired. The narrow band tunable PAs can also be fabricated using CMOS processing, if desired, so that a CMOS PA integrated circuit is provided.

Abstract: An apparatus includes a radio receiver, a GPS receiver and a semiconductor package. The semiconductor package contains both the radio receiver and the GPS receiver.

Abstract: An apparatus includes a radio receiver, a GPS receiver and a semiconductor package. The semiconductor package contains both the radio receiver and the GPS receiver.

Abstract: An apparatus includes a transceiver that is adapted to communicate over a wireless communication link with a wireless device using FM band signals having a range of less than approximately fifty feet.

Abstract: The present invention provides biplanar, symmetrical electromagnets for providing a homogeneous magnetic field. The magnets have coils disposed in two parallel planes. The coils in the two planes are identical. The radii and Ampere-turns of the coils are selected so that a magnetic field between the planes is homogeneous. One preferred embodiment has 6 coils, with 3 coils in each plane. Other embodiments have 8, 10, 10, 12, or more coils. The method of making the coils begins with an equation for the spherical harmonic coefficients describing the fields from a coil as a function of radius, position and Ampere-turns. For a magnet with K coils, the first K−1 even spherical harmonic coefficients are set equal or close to zero (the odd coefficients are zero due to symmetry of the magnet). This produces a set of equations that, when solved, provides the radii, positions, and Ampere-turns of the K coils. The method can be used to design a biplanar, symmetrical electromagnet with any even number of coils.

Abstract: Biplanar, symmetrical electromagnets for providing a homogeneous magnetic field. The magnets have coils disposed in two parallel planes. The coils in the two planes are identical. The radii and Ampere-turns of the coils are selected so that a magnetic field between the planes is homogeneous. One preferred embodiment has 6 coils, with 3 coils in each plane. Other embodiments have 8, 10, 12, or more coils. The method of making the coils begins with an equation for the spherical harmonic coefficients describing the fields from a coil as a function of radius, position and Ampere-turns. For a magnet with K coils, the first K-1 even spherical harmonic coefficients are set equal to zero (the odd coefficients are zero due to symmetry of the magnet). This produces a set of equations that, when solved, provides the radii, positions, and Ampere-turns of the K coils. The method can be used to design a biplanar, symmetrical electromagnet with any even number of coils.