Title: Wave detection circuit of IS 95 and EVDO in separating CDMA signals
Application Number: 200610019728 Application Date: 2006.07.27
Publication Number: 1901361 Publication Date: 2007.01.24
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H03D9/00;H03F3/20;H03H11/00;H04B7/005
Applicant(s) Name: Zhengwei Electronic Technology Co., Ltd., Wuhan Address:
Inventor(s) Name: Meng Qingnan
Attorney & Agent: tang wanrong
Abstract:
    This invention relates to a single carrier power amplifier used in th base stations of the CDMA system including a detection circuit for differentiating IS95 and EVDO in CDMA signals including a CLPF detecting tube, resistor R, capacitors C1 and C2, in which, one end of R is connected with the pins of VOUT VSET of the CLPF detection tube, the other end is connected with an A/D converter and one end of C1, the other of which is connected to the negative of the supply, one end of C2 is connected with the pin of the CLPF detection tube and the other end of C2 is connected with the negative of the supply characterizing that C2 is composed of C2a and C2b, capacitor C2b is serial to a first electronic switch then parallel to capacitor C2a, the control signal pin of the first electronic switch is connected with RB2 pin of a single-chip processor PICI8F2420.
Time: 10