US 6,983,132 B2
Multi-band RF receiving method and apparatus in mobile communication system
Sang-hyun Woo, Seoul (Korea, Republic of); Seong-soo Lee, Suwon (Korea, Republic of); and Jong-ae Park, Yongin (Korea, Republic of)
Assigned to Samsung Electronics Co., Ltd., Suwon (Korea, Republic of)
Filed on Jul. 10, 2003, as Appl. No. 10/616,043.
Claims priority of application No. 2002-40672 (KR), filed on Jul. 20, 2002.
Prior Publication US 2004/0014435 A1, Jan. 22, 2004
Int. Cl. H04B 1/02 (2006.01); H04B 1/04 (2006.01)
U.S. Cl. 455—103 15 Claims
OG exemplary drawing
 
1. A multi-band radio frequency (RF) receiving method in a mobile communication system, comprising:
receiving RF wave signals for four or more non-overlapping bands;
primarily filtering a first wide band including first and second bands adjacent to each other and a second wide band including third and fourth bands adjacent to each other from the received RF wave signals;
low-noise amplifying the RF wave signals of the first and second wide bands, respectively;
secondarily filtering a third wide band including second and third bands adjacent to each other and a fourth wide band including first and fourth bands from the low-noise amplified RF wave signals of the first and second wide bands, and generating two band RF wave signals to be simultaneously received; and
frequency-down converting the two band RF wave signals generated in the secondarily filtering step into two band intermediate frequency (IF) wave signals by means of first and second oscillation frequencies.