Patent ID: 7376406
Filing Date: 2008-05-20
Classification: H04B

Abstract:
1. A diversity reception apparatus that composes signals received by N antenna terminals, where N is a positive integer that is two or larger, the apparatus comprising: a single switching unit operable to sequentially switch between N inputs for the signals received by the N antenna terminals and also to output a single signal; a single analog/digital (AD) conversion unit operable to convert the single signal into a time-division multiplexed digital signal; a single time-division separation unit operable to separate the digital signal into N time-divided signals and to output the N time-divided signals, said single time-division separation unit not being operable to demodulate the digital signal; a timing generation unit operable to control each operation of said single switching unit, said single AD conversion unit and said single time-division separation unit, using a timing signal having a same frequency; N frequency conversion/intermediate frequency (IF) processing units each being connected to a respective one of the N antenna terminals, said N frequency conversion/IF processing units being operable to convert the signals received by the respective antenna terminals into signals having an intermediate frequency; N signal quality judgment units each operable to judge a signal quality of a respective one of the N time-divided signals outputted by said single time-division separation unit; a composition unit connected to said single time-division separation unit and said N signal quality judgment units, said composition unit being operable to compose the N time-divided signals based on the signal qualities; and a single demodulation unit operable to demodulate a single signal outputted by said composition unit, wherein the N inputs of said single switching unit are each connected to a respective one of said N frequency conversion/IF processing units.