A 0.05-26 GHz Direct Conversion I/Q Modulator MMIC

Author

Iverson, Eric W. ; Feng, Ming

Author_Institution

Univ. of Illinois at Urbana-Champaign, Urbana, IL, USA

fYear

2014

fDate

19-22 Oct. 2014

Firstpage

1

Lastpage

4

Abstract

An integrated I/Q modulator is presented, implementing a static frequency divider for local oscillator (LO) quadrature phase splitting, Gilbert cell switching mixers for direct upconversion, and fabricated in a high speed Indium-Phosphide HBT process. LO quadrature is fine-tuned by a control voltage with 0.18 degrees/mV for 2.14 GHz operation. Single-sideband conversion gain ranges from -14 to -23 dB across the LO frequency range of 50 MHz to 26 GHz. Single-carrier W-CDMA ACPR ranges from -64 dBc to -53 dBc for approximately -20 dBm output power. Output intercept point (OIP3) ranges from +14 dBm at 50 MHz to +4.6 dBm at 26 GHz.

Keywords

MMIC; frequency dividers; mixers (circuits); modulators; Gilbert cell switching mixers; direct conversion IQ modulator MMIC; direct upconversion; frequency 2.14 GHz; frequency 50 MHz to 26 GHz; gain -14 dB to -23 dB; local oscillator quadrature phase splitting; single sideband conversion gain; static frequency divider; Amplitude modulation; Baseband; Frequency modulation; Mixers; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Compound Semiconductor Integrated Circuit Symposium (CSICs), 2014 IEEE

Conference_Location

La Jolla, CA

Type

conf

DOI

10.1109/CSICS.2014.6978527

Filename

6978527