Tag Archives: quadrature

System and method for correcting quadrature demodulation error of radar

Application Number  00129589 Application Date  2000.10.08 Publication Number  1346986 Publication Date  2002.05.01 Priority Information     International Classification  G01S7/40   Applicant(s) Name  Inst of Electronics, Chinese Academy of Sciences   Address     Inventor(s) Name  Wang Yiding   Patent Agency Code  11021 Patent Agent  rong zhimin AbstractA system and method for correcting the quadrature demodulation… Read More »

Quadrature frequency division multiplex diversing receiver

Application Number: 00118601Application Date: 2000.06.16Publication Number: 1305277Publication Date: 2001.07.25Priority Information: 1999/11/30 JP 340488/1999International: H04J11/00Applicant(s) Name: Toshiba K.K.Address: Inventor(s) Name: Seki Takashi;Aisawa MasamiPatent Agency Code: 11038Patent Agent: wang maohuaAbstract To provide an OFDM diversity receiver that can effectively conducts diversity so as to enhance error correction characteristic even when a specific carrier receives interference. SOLUTION: Reliability… Read More »

Quadrature demodulator, quadrature demodulating method and recording medium thereof

Application Number: 00107771Application Date: 2000.05.23Publication Number: 1275012Publication Date: 2000.11.29Priority Information: 2000/3/14 JP 069703/2000; 2000/4/14 JP 113409/2000; 1999/5/24 JP 143512/1999International: H04L27/00;H03D1/00Applicant(s) Name: Advantest Corp.Address: Inventor(s) Name: Kato TakashiPatent Agency Code: 11234Patent Agent: wan huatangAbstract A quadrature demodulator capable of calibrating an I (Q) signal conversion section without stopping the receiving operation performed by the quadrature demodulator.… Read More »

Difference quadrature phase shift key base-frequency modulation device and method

Application Number: 00100189Application Date: 2000.01.13Publication Number: 1304246Publication Date: 2001.07.18Priority Information: International: H04L27/20Applicant(s) Name: Lingyuan Communication Co., Ltd.Address: Inventor(s) Name: Wu Mingzhou;Zeng XuxiangPatent Agency Code: 72002Patent Agent: xu xianAbstract A differential quadrature phase key-shifting base-frequency modulation equipment used in communication system includes: storage unit, parameter of a low-pass filter with storing simplified and corresponding list data;… Read More »