公开(公告)号：JP2001127664A

公开(公告)日：2001-05-11

申请号：JP2000276259

申请日：2000-09-12

Applicant: MOTOROLA INC

Inventor： IYU K CHAN ,  SCHWENT DALE ,  MICHAEL RANDOHAA ,  KLOMSDORF ARMIN ,  HUNDT MICHAEL

IPC: H03H7/46 ,  H04B1/00 ,  H04B1/04 ,  H04B1/40

Abstract: PROBLEM TO BE SOLVED: To provide an RF coupler that is suitable for use in a multi-band wireless communication unit where duplicate in components of an RF power detector can be reduced. SOLUTION: A radio frequency(RF) coupler 312 suitable for use in a multi- band wireless communication unit 200 has a terminator 316 and couplers 314, 315. The couplers 314, 315 have passing path coupling elements 318, 320 and coupling path coupling elements 319, 321. The passing path coupling elements 318, 320 transmit RF signals transmitted by respective frequency bands TX band 1, TX band 2 in which the unit 200 is in operation. The coupling path coupling elements 319, 321 couple the RF signals transmitted by the respective passing path coupling elements 318, 320. The coupling path coupling elements 319, 321 and the terminator 316 are coupled in series thereby making compatible with an RF power detector 313 using a single detection diode 322.