Abstract:
PURPOSE: A method and an apparatus for implementing uplink transmission diversity in order to prevent beam foaming in serving RAN are provided to switch antennas used for uplink transmission during switching period. CONSTITUTION: A switch(212) is combined in a plurality of antennas. A processor(202) is combined in the switch. The processor switches a second antenna among a plurality of antennas and a first antenna for uplink transmission during switching period.
Abstract:
A flux and solder-through coating for electrical components or assemblies is produced by melting and applying a copolymer of ethylene and an organic acid, having a mol. wt. 2000-3000, density 0.93-0.95 and ethylene/acid ratio 40:975 - 160:825. The molten material may be treated with a solvent such as an aliphatic hydrocarbon (up to 30 pts. per pt. copolymer). The mixt. can be allowed to cool to the 'cloud point', heated until clearing occurs, chilled and stirred. Additional solvent may be added at room temp. to provide a predetermined viscosity. A polymerised terpene (up to 20 wt.% of the solids in the soln.) can also be added.
Abstract:
Digital dwell circuitry for a spark-and-dwell ignition control system uses maximum advance and reference sensors to produce pulse transitions, which determine positions for the maximum and minimum possible advances for spark ignition with respect to the position of the engine crank-shaft. For each maximum advance sensor pulse transition, a main counter starts a sequential running count of speed-independent clock pulses wherein the maximum count obtained by the counter is related to the engine crankshaft speed. The main counter running count also determines several inputs to a read-only memory (ROM) circuit whose output controls a rate multiplier.