Title:
周波数変調されたデジタル信号のための集積可能な無線受信器回路
Document Type and Number:
Japanese Patent JP4004553
Kind Code:
B2
Abstract:
An FM receiver, which contains quadrature downward mixing to a low IF, analog IF polyphase filters in quadrature signal paths and an analog quadrature signal demodulator, has AC coupling in its two quadrature signal paths. At its output, the demodulator produces a voltage that is proportional to the input frequency and is supplied to the input of a decision circuit that determines the digital signal state. The circuit according to the invention can be used in DECT receivers.
Inventors:
Stephan Heinen
Application Number:
JP54524599A
Publication Date:
November 07, 2007
Filing Date:
February 01, 1999
Export Citation:
Assignee:
Siemens Aktiengesellschaft
International Classes:
H04L27/14; H03D3/00; H03D7/16; H04B1/26; H04B1/30; H04L25/06
Domestic Patent References:
| JP60189355A |
Foreign References:
| WO1993014578A1 | ||||
| EP0153020A1 | ||||
| GB1530602A | ||||
| DE19612714A1 |
Attorney, Agent or Firm:
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Reinhard Einsel
Toshiomi Yamazaki
Takuya Kuno
Reinhard Einsel