Abstract: Embodiments of the inventive system and methods provide the ability to access and process real-time data, such as customer data (e.g., purchase history, browsing history, inquiry history, etc.), inventory data (current levels, in-shipment amounts, in-transit locations, etc.), product margin data (and other financial data, such as sales levels, sales trajectories, revenue, etc.), aggregated customer behavioral data (such as identifying strong influencers, collaborative filtering based associations or correlations, etc.), to provide an integrated shopping experience for end users, such as a vendor's customers.

Abstract: To reduce circuit area and power consumption and suppress transient response occurring at switching in PGA of a programmable gain amplifier is provided a wireless communication receiver comprising PGAs for adjusting the gain of a received signal down-converted by mixers and sending it to base-band block. Within PGAs are provided HPFATT circuits formed of capacitors arranged in series, and ladder resistors arranged in parallel, with signal lines, and a plurality of switches. HPFATT is a circuit serving as a high-pass filter and an attenuator for gain switching, wherein switches are controlled by control signal sg from a controller. Amplifiers connected to the rear stage of the HPFATT circuit are formed of MOS transistors.

Abstract: A direct upconversion system communication semiconductor integrated circuit includes a frequency converter circuit for up-converting a transmission signal and a notch filter located at a subsequent stage of the frequency converter circuit. The notch filter is served to cut off at least third-order harmonics of a local signal.

Abstract: A control signal (66, 70) for an amplifier (42, FIG. 6) can be switched between a high and a low level to control the shape of the pulse envelope (64, 68) of the amplifier output signal. The duration over which the control signal attains its high level is varied to control the shape of the envelope.

Abstract: A curved inverted-L and F antenna is disclosed. In a preferred embodiment a curved inverted-F antenna 300 comprising a capacitative line 206 and inductive stub 204 is disposed above a correspondingly curved ground plane 308. Preferably, the separation between the capacitative line 206 and ground plane 308 is substantially constant and of the order of one tenth of the wavelength of the operating frequency of the antenna. Suitably the short circuit element of the antenna and the feed track 402 are non-parallel which has the effect of improving the radiated field in a short circuit direction.

Abstract: An antenna assembly comprises an elongate antenna element (11) mounted in a support (5) and movable between a retracted position and an extended position. A helical antenna element (12) in electrical contact with the helical element is carried at one end of the elongate element. The coupling between the feed point and the antenna in the retracted and extended positions allow the same matching circuitry to be used in both conditions. The invention provides a compact and convenient dual antenna arrangement ideally suited for use in a portable cellular radio telephone.