CN100375904C - Radio frequency pulse angle phase setting method and circuit thereof - Google Patents
Radio frequency pulse angle phase setting method and circuit thereof Download PDFInfo
- Publication number
- CN100375904C CN100375904C CNB021497737A CN02149773A CN100375904C CN 100375904 C CN100375904 C CN 100375904C CN B021497737 A CNB021497737 A CN B021497737A CN 02149773 A CN02149773 A CN 02149773A CN 100375904 C CN100375904 C CN 100375904C
- Authority
- CN
- China
- Prior art keywords
- radio
- frequency pulse
- quadrature phase
- negate
- logical circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000017105 transposition Effects 0.000 claims abstract description 33
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000000295 complement effect Effects 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 2
- 230000009466 transformation Effects 0.000 abstract 1
- 238000002595 magnetic resonance imaging Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000003384 imaging method Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Landscapes
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
Description
C1 | C0 | Quadrature phase is provided with | Transposition logical one, 2 states | Negate |
Negate |
a’(n) | b’(n) |
0 | 0 | 0° | Do not replace | Negate not | Negate not | a(n) | b(n) |
0 | 1 | 90° | Transposition | Negate not | Negate | b(n) | -a(n) |
1 | 0 | 180° | Do not replace | Negate | Negate | -a(n) | -b(n) |
1 | 1 | 270° | Transposition | Negate | Negate not | -b(n) | a(n) |
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB021497737A CN100375904C (en) | 2002-12-24 | 2002-12-24 | Radio frequency pulse angle phase setting method and circuit thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB021497737A CN100375904C (en) | 2002-12-24 | 2002-12-24 | Radio frequency pulse angle phase setting method and circuit thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1510432A CN1510432A (en) | 2004-07-07 |
CN100375904C true CN100375904C (en) | 2008-03-19 |
Family
ID=34233788
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB021497737A Expired - Lifetime CN100375904C (en) | 2002-12-24 | 2002-12-24 | Radio frequency pulse angle phase setting method and circuit thereof |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN100375904C (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100365425C (en) * | 2005-04-30 | 2008-01-30 | 华东师范大学 | Positive-negative phase combined pulse with selective excitation and its implementing method |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4324952A (en) * | 1978-08-21 | 1982-04-13 | Harris Corporation | Direct function receivers and transmitters for multichannel communications system |
US4694254A (en) * | 1985-06-10 | 1987-09-15 | General Electric Company | Radio-frequency spectrometer subsystem for a magnetic resonance imaging system |
JPH07323019A (en) * | 1994-05-31 | 1995-12-12 | Shimadzu Corp | Mr imaging apparatus |
US5705959A (en) * | 1996-10-08 | 1998-01-06 | The United States Of America As Represented By The Secretary Of The Air Force | High efficiency low distortion amplification |
US6043707A (en) * | 1999-01-07 | 2000-03-28 | Motorola, Inc. | Method and apparatus for operating a radio-frequency power amplifier as a variable-class linear amplifier |
JP2000115264A (en) * | 1998-10-01 | 2000-04-21 | Motorola Japan Ltd | Digital modulator |
CN1256427A (en) * | 1998-12-04 | 2000-06-14 | 施卢默格控股有限公司 | Pretreatment of spin near nuclear magnetic resonance area |
CN1305113A (en) * | 1999-10-22 | 2001-07-25 | Ge医疗系统环球技术有限公司 | Method and device for phase distribution and phase correction and magnetic resonance imaging method and device |
JP2001228242A (en) * | 2000-02-15 | 2001-08-24 | Mitsubishi Electric Corp | Digital phase-detecting apparatus and pulse radar apparatus |
CN1350176A (en) * | 2000-10-20 | 2002-05-22 | Ge医疗系统环球技术有限公司 | Phase error measuring method, correction method and apparatus, magnetic resonance imaging apparatus |
-
2002
- 2002-12-24 CN CNB021497737A patent/CN100375904C/en not_active Expired - Lifetime
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4324952A (en) * | 1978-08-21 | 1982-04-13 | Harris Corporation | Direct function receivers and transmitters for multichannel communications system |
US4694254A (en) * | 1985-06-10 | 1987-09-15 | General Electric Company | Radio-frequency spectrometer subsystem for a magnetic resonance imaging system |
JPH07323019A (en) * | 1994-05-31 | 1995-12-12 | Shimadzu Corp | Mr imaging apparatus |
US5705959A (en) * | 1996-10-08 | 1998-01-06 | The United States Of America As Represented By The Secretary Of The Air Force | High efficiency low distortion amplification |
JP2000115264A (en) * | 1998-10-01 | 2000-04-21 | Motorola Japan Ltd | Digital modulator |
CN1256427A (en) * | 1998-12-04 | 2000-06-14 | 施卢默格控股有限公司 | Pretreatment of spin near nuclear magnetic resonance area |
US6043707A (en) * | 1999-01-07 | 2000-03-28 | Motorola, Inc. | Method and apparatus for operating a radio-frequency power amplifier as a variable-class linear amplifier |
CN1305113A (en) * | 1999-10-22 | 2001-07-25 | Ge医疗系统环球技术有限公司 | Method and device for phase distribution and phase correction and magnetic resonance imaging method and device |
JP2001228242A (en) * | 2000-02-15 | 2001-08-24 | Mitsubishi Electric Corp | Digital phase-detecting apparatus and pulse radar apparatus |
CN1350176A (en) * | 2000-10-20 | 2002-05-22 | Ge医疗系统环球技术有限公司 | Phase error measuring method, correction method and apparatus, magnetic resonance imaging apparatus |
Non-Patent Citations (3)
Title |
---|
用于核磁共振的直接数字合成频率源. 蒋赟,蒋瑜,陶红艳,李鲠颖.波谱学杂志,第18卷第4期. 2001 * |
由回波相位信息提取振幅信息的方法. 李珑.信号处理,第15卷第4期. 1999 * |
简评磁共振成像谱仪RF收、发通道的开发. 罗建平,胡曾千.中国医学影像技术,第14卷第9期. 1998 * |
Also Published As
Publication number | Publication date |
---|---|
CN1510432A (en) | 2004-07-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101610095B (en) | FPGA-based ultra-wideband radio frequency digital receiver device and realization method thereof | |
US5534827A (en) | Modulator | |
US10187232B1 (en) | Multi-band radio frequency transmitter | |
CN1064492C (en) | Apparatus for performing frequency conversion in a communication system | |
CN105403865B (en) | Multi-carrier signal constant envelope modulation methodology | |
US9313076B2 (en) | Antenna modulation method applicable to wireless transmitter and transmitter using the same | |
US10560126B2 (en) | Mixed-mode millimeter-wave transmitter | |
CN102752247A (en) | RF transmitter, wireless communication unit and method for generating RF signal | |
US10523478B1 (en) | System and method for generating high speed digitized-RF signals | |
CN106209310A (en) | A kind of variable symbol rate modem devices and implementation method | |
CN103812450B (en) | Digital quadrature conveyer and its operational approach | |
US9634694B2 (en) | Transmitter with a reduced complexity digital up-converter | |
CN100375904C (en) | Radio frequency pulse angle phase setting method and circuit thereof | |
CN104054312B (en) | The transmitter front ends device of generation output signal is modulated based on multiphase | |
Beikmirza et al. | A wideband energy-efficient multi-mode CMOS digital transmitter | |
CN110398756A (en) | Beidou B3 anti-interference antenna based on VIVADO+HLS | |
CN105634851A (en) | Measuring device capable of generating user-defined data file orthogonal amplitude modulation signal and modulation method | |
US11126215B2 (en) | Clock signal polarity controlling circuit | |
US10224968B2 (en) | Digital up-converter and method therefor | |
CN101207593B (en) | System and method for implementing modem intermediate frequency numeralization in wireless communication | |
US20140122553A1 (en) | Vector NCO and Twiddle Factor Generator | |
CN107995137A (en) | GFSK modulator approaches, device and terminal device | |
Ghosh et al. | Reconfigurable Signal Processing and DSP Hardware Generator for 5G and Beyond Transmitters | |
US9904311B1 (en) | System and a method for a waveform generator | |
CN214591500U (en) | Radio transmitting device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Radio frequency pulse angle phase setting method and circuit thereof Effective date of registration: 20141226 Granted publication date: 20080319 Pledgee: Shenzhen SME credit financing guarantee Group Co.,Ltd. Pledgor: SHENZHEN ANKE HIGH-TECH Co.,Ltd. Registration number: 2014990001139 |
|
PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20160119 Granted publication date: 20080319 Pledgee: Shenzhen SME credit financing guarantee Group Co.,Ltd. Pledgor: SHENZHEN ANKE HIGH-TECH Co.,Ltd. Registration number: 2014990001139 |
|
PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Radio frequency pulse angle phase setting method and circuit thereof Effective date of registration: 20160301 Granted publication date: 20080319 Pledgee: Shenzhen SME financing Company limited by guarantee Pledgor: SHENZHEN ANKE HIGH-TECH Co.,Ltd. Registration number: 2016990000154 |
|
PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20170330 Granted publication date: 20080319 Pledgee: Shenzhen SME financing Company limited by guarantee Pledgor: SHENZHEN ANKE HIGH-TECH Co.,Ltd. Registration number: 2016990000154 |
|
CP02 | Change in the address of a patent holder | ||
CP02 | Change in the address of a patent holder |
Address after: No.2 workshop, Lingya Industrial Park, No.1 Tangtou Road, Tangtou community, Shiyan street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN ANKE HIGH-TECH Co.,Ltd. Address before: 518067, No. 26, Mount Shun Road, Shekou, Guangdong, Shenzhen Patentee before: SHENZHEN ANKE HIGH-TECH Co.,Ltd. |
|
CX01 | Expiry of patent term | ||
CX01 | Expiry of patent term |
Granted publication date: 20080319 |