TY - JOUR
T1 - A W-band high-power predistorted direct-conversion digital modulator for transmitter applications
AU - Chang, Hong Yeh
AU - Tsai, Jeng Han
AU - Huang, Tian Wei
AU - Wang, Huei
AU - Xia, Yongxiang
AU - Shu, Yonghui
N1 - Funding Information:
Manuscript received January 11, 2005; revised May 2, 2005. This work was supported in part by the National Science Council of Taiwan, R.O.C., under Grant NSC 93-2752-E-002-002-PAE, Grant NSC 93-2213-E-002-033, and Grant NSC 93-2219-E-002-025 and by WiseWave Technology, Inc., Torrance, CA. The review of this letter was arranged by Associate Editor J.-G. Ma.
PY - 2005/9
Y1 - 2005/9
N2 - This letter presents a W-band high-power direct-conversion transmitter using digital predistortion techniques for digital modulation applications. The transmitter is a direct-conversion configuration that employs a reflection-type IQ modulator module and a power amplifier module. With the predistortion function in digital signal processing (DSP), this transmitter demonstrated an output channel power of greater than 19 dBm, and the adjacent channel power ratio (ACPR) was improved by 10 and 18 dB for QPSK and π/4-DQPSK modulation, respectively. To the best of our knowledge, this is the first demonstration of linearization techniques for W-band high-power digital modulation transmitters.
AB - This letter presents a W-band high-power direct-conversion transmitter using digital predistortion techniques for digital modulation applications. The transmitter is a direct-conversion configuration that employs a reflection-type IQ modulator module and a power amplifier module. With the predistortion function in digital signal processing (DSP), this transmitter demonstrated an output channel power of greater than 19 dBm, and the adjacent channel power ratio (ACPR) was improved by 10 and 18 dB for QPSK and π/4-DQPSK modulation, respectively. To the best of our knowledge, this is the first demonstration of linearization techniques for W-band high-power digital modulation transmitters.
KW - Linearization
KW - Millimeter-wave (MMW)
KW - Quadrature amplitude modulation (QAM)
KW - Quadrature phase shift keying (QPSK)
KW - W-band direct-conversion transmitter
UR - http://www.scopus.com/inward/record.url?scp=27844602772&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=27844602772&partnerID=8YFLogxK
U2 - 10.1109/LMWC.2005.855382
DO - 10.1109/LMWC.2005.855382
M3 - Article
AN - SCOPUS:27844602772
SN - 1531-1309
VL - 15
SP - 600
EP - 602
JO - IEEE Microwave and Wireless Components Letters
JF - IEEE Microwave and Wireless Components Letters
IS - 9
ER -