A low IF receiver frequency translates an input signal in quadrature related mixers, filters in respective low pass channel filters, and derotates to produce a wanted signal and its image. At switch-on, the receiver is operated as a zero IF receiver in order to determine which of the adjacent channels to the wanted channel has the smaller interferer, and the local oscillator frequency supplied to the mixers is then adjusted to bring that interferer into the channel bandwidth of the low pass chan...

A low IF receiver suitable for use in cellular and cordless telephones and TV tuners, comprises input signal receiving means(10), quadrature related frequency down conversion means including first and second mixing means(14, 15) having first inputs(12, 13) coupled to the input signal receiving means and a local oscillator means(16) for generating a local oscillator signal having a frequency offset from a nominal centre frequency of the input signal coupled to second inputs(18, 19) of the first a...

An apparatus comprising a first circuit and a deserializer circuit. The first circuit may be configured to present a clock signal and a data signal having a second data rate in response to an input signal having a first data rate. The deserializer circuit may be configured to generate an output signal in response to (i) the clock signal, (ii) the data signal and (iii) one or more select signals.

A fire resistant carpet backing formulation has five components of: a) a polyurethane dispersion; b) fire retardant components having at least a) ammonium polyphosphate, b) melamine, and c) a char former; c) solvents including water; d) filler, pigment and grinding aids; and e) surfactants. Preferred char formers are pentaerythritol and polysaccharides. The polyurethane dispersion is present in about 18-30% by weight, the fire retardant components of part (b) are present in about 39-61% by weigh...

A low power low noise amplifier achieves a high power gain without increasing power consumption by sharing the bias current. The amplifier is composed of a cascade structure which consists of a parallel connected common source transistor and common gate transistor connected to a common source transistor, an inverter type structure connected to the common source transistor, and structure improving the third-order intermodulation component using the parallel connected common source transistor and ...

A wound and laminated iron core is formed by winding a soft magnetic thin strip into a circular ring shape or elliptical ring shape. A coil is then wound around almost an entire outer periphery of the ring of wound and laminated iron core. A cross sectional shape of the wound and laminated iron core vertical to a peripheral direction of the ring is any one of: (i) a circular shape, (ii) an elliptical shape, (iii) a substantially regular polygon of at least 6 sides, (iv) a shape encircled by a pa...

An apparatus comprising a first circuit, a deserializer circuit and a framer circuit. The first circuit may be configured to present a clock signal and a data signal having a second data rate in response to an input signal having a first data rate. The deserializer circuit may comprise (a) a parallel register bank configured to generate an output signal in response to (i) the clock signal, (ii) the data signal and (iii) one or more select signals and (b) a state machine configured to generate th...

A connector includes an insulative housing and rows of contacts with downwardly projecting lower ends soldered to contact pads on a circuit board, which assures engagement of all contact lower ends with all contact pads despite tolerance buildup due to housing warping. Each contact has upper and lower contact elements (50, 52) biased apart by a coil spring (54). When the connector is placed on a circuit board (14), the connector is moved down until spacers (92) on the housing lower surface engag...

A sensing element, which includes a central core having four radially projecting webs with a bonded foil strain gauge on each web, is enclosed in a cylindrical case having an integral bottom with an annular ledge supporting the outer portions of the webs of the sensing element. The case is closed by a top diaphragm which centers a load-receiving button over the core of the sensing element.

A gyroscope having a rotor supported by pressurized gas within an enclosed chamber surrounding stator structure enclosing the supported portion of the rotor. The gas is pressurized by substantially reducing the volume of the chamber by firing a pyrotechnic squib to move a flexible diaphragm forming a wall of the chamber. Mechanism is provided for engaging and effecting spin-up of the rotor and automatically disengaging therefrom, as well as electronic pick-off and signal processing means. The in...