A Low-Current Digitally Predistorted Direct-Conversion Transmitter With 25% Duty-Cycle Passive Mixer

被引：10

作者：

Collados, Manel ^{[1
]}

Zhang, HongLi ^{[2
]}

Tenbroek, Bernard ^{[1
]}

Chang, Hsiang-Hui ^{[3
]}

机构：

[1] MTK Wireless Ltd, W Malling ME19 4AD, England

[2] MediaTek Singapore Pte Ltd, Singapore 138628, Singapore

[3] MediaTek Inc, Hsinchu 30078, Taiwan

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2014年 / 62卷 / 04期

关键词：

CMOS; digital; driver; harmonic; linearity; longterm evolution (LTE); mixer; modulator; nonlinear; passive; predistortion; transmitter (TX); WCDMA; POWER;

D O I：

10.1109/TMTT.2014.2309559

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A low-current direct-conversion transmitter (TX) is obtained by combining an efficient single-balanced 25% duty-cycle passive mixer with a low-bias single-ended driver. The nonlinearity of such architecture is aggravated by strong harmonics at the mixer output folding down to the fundamental frequency due to driver nonlinearity. To address this, a baseband mathematical model of the passive mixer plus nonlinear driver is derived. Then, based on this model, a novel digital-predistortion approach is disclosed. Implemented in 40-nm CMOS, the modulator and driver combined consume 45 mW when delivering a +3-dBm Release 99 WCDMA signal with 0.9% error vector magnitude (EVM) and -59-dBc adjacent-channel leakage power ratio (ACLR). In long-term evolution (LTE) mode, the TX delivers +0-dBm 10-MHz LTE 16QAM with -53-dBc ACLR and 1.2% EVM.

引用

页码：726 / 731

页数：6

共 14 条

[1]

Boos Z., 2011, 2011 IEEE International Solid-State Circuits Conference (ISSCC 2011), P376, DOI 10.1109/ISSCC.2011.5746361

[2]

Collados M, 2013, IEEE RAD FREQ INTEGR, P141

[3] Effects of even-order nonlinear terms on power amplifier modeling and predistortion linearization [J].

Ding, L ;

Zhou, GT .

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, 2004, 53 (01) :156-162

[4] A multimode transmitter in 0.13 μm CMOS using direct-digital RF modulator [J].

Eloranta, Petri ;

Seppinen, Pauli ;

Kallioinen, Sarni ;

Saarela, Tuornas ;

Parssinen, Aarno .

IEEE JOURNAL OF SOLID-STATE CIRCUITS, 2007, 42 (12) :2774-2784

[5] A Low-Power, Low-EVM, SAW-Less WCDMA Transmitter Using Direct Quadrature Voltage Modulation [J].

He, Xin ;

van Sinderen, Jan .

IEEE JOURNAL OF SOLID-STATE CIRCUITS, 2009, 44 (12) :3448-3458

[6] A 5 mm2 40 nm LP CMOS Transceiver for a Software-Defined Radio Platform [J].

Ingels, Mark ;

Giannini, Vito ;

Borremans, Jonathan ;

Mandal, Gunjan ;

Debaillie, Bjorn ;

Van Wesemael, Peter ;

Sano, Tomohiro ;

Yamamoto, Takaya ;

Hauspie, Dries ;

Van Driessche, Joris ;

Craninckx, Jan .

IEEE JOURNAL OF SOLID-STATE CIRCUITS, 2010, 45 (12) :2794-2806

[7]

Jones C., 2007, 2007 IEEE International Solid-State Circuits Conference (IEEE Cat. No.07CH37858), P336, DOI 10.1109/ISSCC.2007.373431

[8] Analysis of Direct-Conversion IQ Transmitters With 25% Duty-Cycle Passive Mixers [J].

Mirzaei, Ahmad ;

Murphy, David ;

Darabi, Hooman .

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, 2011, 58 (10) :2318-2331

[9] A generalized memory polynomial model for digital predistortion of RF power amplifiers [J].

Morgan, Dennis R. ;

Ma, Zhengxiang ;

Kim, Jaehyeong ;

Zierdt, Michael G. ;

Pastalan, John .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2006, 54 (10) :3852-3860

[10]

Oliaei O., 2012, 2012 IEEE International Solid-State Circuits Conference (ISSCC), P164, DOI 10.1109/ISSCC.2012.6176960

← 1 2 →