Keyword : quadrature modulator

A Multiband LTE SAW-Less CMOS Transmitter with Source-Follower-Driven Passive Mixers, Envelope-Tracked RF-PGAs, and Marchand Baluns
Takao KIHARA Tomohiro SANO Masakazu MIZOKAMI Yoshikazu FURUTA Mitsuhiko HOKAZONO Takaya MARUYAMA Tetsuya HEIMA Hisayasu SATO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2013/06/01
Vol. E96-C  No. 6 ; pp. 774-782
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuits and Related SoC Integration Technologies)
Category: 
Keyword: 
multiband, LTE, SAW-less, CMOS, transmitter, quadrature modulator, source follower, envelope-tracking, programmable gain amplifier, balun, 
 Summary | Full Text:PDF(3.4MB)
Automatic IQ Imbalance Compensation Technique for Quadrature Modulator by Single-Tone Testing
Minseok KIM Yohei KONISHI Jun-ichi TAKADA Boxin GAO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/05/01
Vol. E95-B  No. 5 ; pp. 1864-1868
Type of Manuscript:  LETTER
Category: Wireless Communication Technologies
Keyword: 
quadrature modulator, IQ imbalance, image distortion, steepest descent, spectrum analyzer, 
 Summary | Full Text:PDF(259.8KB)
3 to 5-GHz Si-Bipolar Quadrature Modulator and Demodulator Using a Wideband Frequency-Doubling Phase Shifter
Tsuneo TSUKAHARA Junzo YAMADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/02/01
Vol. E84-A  No. 2 ; pp. 506-512
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit Techniques Supporting the System LSI Era)
Category: 
Keyword: 
Si bipolar, quadrature modulator, quadrature demodulator, wireless LAN, 5-GHz band, 
 Summary | Full Text:PDF(2MB)
A 1.9-GHz Direct Conversion Transmitter IC with Low Power On-Chip Frequency Doubler
Shoji OTAKA Ryuichi FUJIMOTO Hiroshi TANIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/02/25
Vol. E82-A  No. 2 ; pp. 313-319
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
frequency doubler, quadrature modulator, variable attenuator, transmitter, PHS(Personal Handy-Phone System), 90phase-shifter, ECL-EXOR, 
 Summary | Full Text:PDF(723.3KB)
A 2.7-V Quasi-Microwave Si-Bipolar Quadrature Modulator without Tuning
Tsuneo TSUKAHARA Tadao NAKAGAWA Masahiro MURAGUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/02/25
Vol. E80-A  No. 2 ; pp. 349-352
Type of Manuscript:  Special Section LETTER (Special Section on Analog Circuit Techniques for System-on-Chip Integration)
Category: 
Keyword: 
Si bipolar, quadrature modulator, quasi-microwave, digital mobile communication, 
 Summary | Full Text:PDF(264.1KB)
An Extremely Accurate Quadrature Modulator IC Using Phase Detection Method and Its Application to Multilevel QAM Systems
Nobuaki IMAI Hiroyuki KIKUCHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1992/06/25
Vol. E75-C  No. 6 ; pp. 674-682
Type of Manuscript:  Special Section PAPER (Special Issue on MMIC Technology)
Category: 
Keyword: 
quadrature modulator, multilevel QAM, modulation phase error, phase shifter, silicon bipolar, 
 Summary | Full Text:PDF(740.7KB)