Title:
【発明の名称】独立側波帯信号の受信機
Document Type and Number:
Japanese Patent JP2000517516
Kind Code:
A
Abstract:
A receiver for independent sideband (ISB) signals comprises means (30 to 54) for producing digitised quadrature related zero IF versions of the received signal which are applied to a complex FIR filter structure (56) comprising respective real low pass filters in which alternate coefficients (C1 to CN-1, C0 to CN) are non-zero. The FIR filter structure is illustrated in greater detail in Figure 3 (not shown). The respective upper and lower sidebands (USB, LSB) are recovered by obtaining the sum and difference of the outputs of the respective filters. The respective sideband signals (USB, LSB) are stored in RAM (58) and when it is desired to reproduce the stored signal it is expanded, equalised and converted to an analogue signal which is supplied to an audio transducer (64).
Inventors:
Mattis Heinz Christian
Application Number:
JP52933598A
Publication Date:
December 26, 2000
Filing Date:
March 12, 1998
Export Citation:
Assignee:
Konin Krekka Philips Electronics NV
International Classes:
H03H17/02; H03D1/22; H03D3/00; H04B1/10; H04B1/16; H04B1/30; H04B1/40; H04B1/68; H04B7/005; H04H20/88; H04L27/02; H04B1/00; (IPC1-7): H04L27/02; H03H17/02; H04B1/10; H04B1/16; H04B7/005
Attorney, Agent or Firm:
Susumu Tsugaru