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1. CN101473547 - Dual band receiver with control means for preventing signal overloading

Office China
Application Number 200780023149.X
Application Date 12.06.2007
Publication Number 101473547
Publication Date 01.07.2009
Publication Kind A
IPC
H04B 1/40
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
38Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
40Circuits
H04B 7/08
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
08at the receiving station
CPC
H04B 1/0067
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
005adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
0067with one or more circuit blocks in common for different bands
H04B 1/0064
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
005adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
0064with separate antennas for the more than one band
H04B 7/0808
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
08at the receiving station
0802using antenna selection
0805with single receiver and antenna switching
0808comparing all antennas before reception
Applicants NXP BV
NXP股份有限公司
Inventors Toh Yeow Teng
卓尧程
Kwong Kam Choon
邝金泉
Agents zhu jingui
中科专利商标代理有限责任公司
Priority Data 06115911.7 22.06.2006 EP
Title
(EN) Dual band receiver with control means for preventing signal overloading
(ZH) 具有用于防止信号过载的控制装置的双频段接收机
Abstract
(EN)
A portable dual band receiver (D), intended for equipping a mobile equipment, comprises a first antenna (ANl), a second antenna (AN2), a two-states switching means (SW) connected to the first (ANl) and second (AN2) antennas and arranged to deliver either first signals comprised into a first band when it is set into a first state or second signals comprised into a second band when it is set into a second state, at least one low noise amplifier (Al, A2) arranged to amplify the signals delivered by the switching means (SW), a processing means (PM) arranged to process the signals outputted by the low noise amplifier(s) (A1,A2) either in a first mode or in a second mode, and a control means (CM) arranged, when the processing means (PM) works in the second mode, to determine which of the first (ANl) and second (AN2) antennas induces the best reception quality into the processing means (PM), and to set the switching means (SW) in the state which allows it to deliver the signals received by the antenna that it has determined.

(ZH)

一种用于装配移动设备的便携式双频段接收机D,该双频段接收机(D)包括:第一天线(AN2);第二天线(AN2);二状态开关装置(SW),与第一天线(AN1)和第二天线(AN2)连接,所述二状态开关装置(SW)用于在其被设置成第一状态时传递属于第一频段的第一信号或在其被设置成第二状态时传递属于第二频段的第二信号;至少一个低噪声放大器(A1,A2),用于将开关装置(SW)传递的信号放大;处理装置(PM),用于在第一模式或在第二模式下对低噪声放大器(A1,A2)输出的信号进行处理;以及控制装置(CM),用于在处理装置(PM)以第二模式工作时确定第一天线(AN1)和第二天线(AN2)中的哪个将最佳接收质量引入处理装置(PM)中,以及将开关装置(SW)设置成允许其传递信号的状态,所述信号是由所述控制装置(CM)已确定的天线接收的。