Patent ID: 9246520
Filing Date: 2016-01-26
CPC Classification: H04B,H04W

Claim Text:
1. A wideband and multi-band frequency up converter, comprising: a first mixer configured to mix an intermediate frequency (IF) signal and a first local signal, and generate a generated IF signal; a narrow band filter configured to filter the generated IF signal using a predetermined passband, wherein, the narrow band filter which is a band pass filter (BPF) uses a frequency of the generated IF signal as a center frequency; a first local oscillator configured to generate the first local signal so that the IF signal passes the narrow band filter; a second local oscillator configured to generate a second local signal needed to convert the generated IF signal into a desired radio frequency (RF) band; a second mixer configured to mix the generated IF signal filtered in the narrow band filter and the second local signal, and generate an RF signal; a wideband filter configured to filter the generated RF signal, and use at least two RF bands as a passband; and a control unit configured to vary a frequency of the first local signal so that the generated IF signal corresponds to the passband of the narrow band filter, and vary a frequency of the second local signal needed to convert the generated IF signal passed through the narrow band filter into the desired RF band.