Solutions Search - I/Q Modulators

Baseband Design Example for LTC5589/LTC5599 Low-Power IQ Modulator

Bruce Hemp - Applications Section Leader Jul 1st 2016
Introduction This basic low power modulator was described in the LT Journal Nov 2015 article. In this blog post, we will show how to: Use simulation to validate the filter design, and Reduce DC offsets by utilizing Differential Amplifiers for the baseband drive. Also shown are some miscellaneous tips to help complete ...

 

DC2391A - LTC5589 Demoboard | 700MHz - 3.8GHz Low-Power I/Q Modulator

Jun 1st 2016
Demonstration circuit 2391A is optimized for evaluation of the LTC®5589 low power I/Q modulator up to 4.5GHz. For frequencies above 4.5GHz, LO matching circuit on the DC2391A demo board can be easily modified for improved image rejection performance. Refer to data sheet for additional information. The four balanced I- and ...

 

6GHz Low Power Direct Conversion I/Q Modulator Simplifies Sideband & Carrier Suppression Calibration

May 26th 2016
MILPITAS, CA - May 26, 2016 - Linear Technology introduces a new low power I/Q modulator, the LTC5589, which enables battery-powered, high performance broadband transmitters operating in the range from 700MHz to 6GHz. Powered by a single 2.7V to 3.6V supply, the LTC5589 modulator draws only 29.5mA current, 50% lower power consumption ...

 

A Very Low Power, High Performance I/Q Modulator

James Wong - Product Marketing Manager Nov 19th 2014
Modern digital transmitters take advantage of using high-order modulation to maximize data throughput rate while minimizing spectral bandwidth, thus allowing more efficient use of the frequency spectrum. I/Q modulators allow baseband signals to directly modulate onto the RF carrier. Such modulators typically suffer from excessive ...

 

DC2091A - LTC5599 | 30MHz to 1300MHz Low Power Direct I/Q Modulator - DC590B Serial Board Required

Sep 5th 2014
Demonstration circuit 2091A is optimized for evaluation of the LTC®5599 low power direct quadrature modulator. The balanced I and Q baseband input ports can be either AC- or DC-coupled to a source with a common mode voltage level of about 1.4V. Fixed LC networks on the LO and RF ports cover a continuous 90MHz to 1300MHz ...

 

92mW Direct Conversion I/Q Modulator Has Better than 50dB Sideband & Carrier Suppression

Aug 11th 2014
MILPITAS, CA - August 11, 2014 - A new low power I/Q modulator from Linear Technology enables battery-powered transmitters operating in the 30MHz to 1.3GHz frequency bands, breaking new ground in power consumption, sideband suppression, carrier leakage and dynamic range performance. The LTC5599 modulator, powered from a single ...

 

Optimization of EVM Performance in IQ Modulators

Peter Stroet - design engineer
Bruce Hemp - Applications Section Leader May 30th 2014
Introduction EVM, or error vector magnitude, is essentially a scalar measurement of digital modulation accuracy, an important figure of merit for any source of digital modulation. This note shows how a vector signal analyzer helps optimize EVM performance of IQ modulators such as the LTC5598, a 5MHz to 1600MHz high linearity ...

 

DC1524A-A - LTC5588-1 | 6GHz Ultrahigh OIP3 Quadrature Modulator

Nov 15th 2010
DC1524A-A - Demo Board for:LTC5588-1 - 200MHz to 6000MHz Quadrature Modulator with Ultrahigh OIP3 ...

 

A 200MHz to 6GHz Direct Conversion I/Q Modulator Achieves 30.9dBm Output Third-Order Intercept

Sep 14th 2010
MILPITAS, CA - September 14, 2010 - Linear Technology introduces the LTC5588-1, a new generation ultra-high linearity direct conversion I/Q modulator that operates over a wide frequency range from 200MHz to 6GHz. The new modulator offers best-in-class linearity performance of 30.9dBm OIP3 (Output Third-Order Intercept) at 2.14GHz ...

 

5MHz to 1.6GHz High Linearity Direct Quadrature Modulator

May 4th 2009
MILPITAS, CA - May 4, 2009 - A new low frequency direct conversion quadrature modulator from Linear Technology Corporation offers superior linearity performance and low noise to enhance the dynamic range performance of basestation transmitters. The LTC5598 offers best-in-class +27.7 dBm OIP3 (Output 3rd Order Intercept) and ...

 

DC1455A - LTC5598IUF | 5MHz to 1.6GHz I-Q Modulator

Apr 30th 2009
DC1455A - Demo Board for:LTC5598 - 5MHz to 1600MHz High Linearity Direct Quadrature Modulator ...

 

DC1178A - LT5568-2EUF | 900MHz GSM/EDGE Optimized I/Q Modulator

Mar 19th 2007
DC1178A - Demo Board for:LT5568-2 - GSM/EDGE Optimized, High Linearity Direct Quadrature Modulator ...

 

DC944A - LT5571EUF | 900MHz I/Q Modulator w/ Hi-Z & 0.5VDC Bias

Jan 29th 2007
DC944A - Demo Board for:LT5571 - 620MHz - 1100MHz High Linearity Direct Quadrature Modulator ...

 

High Linearity 620MHz-1100MHz Quadrature Modulator Provides High Performance for GSM Basestations & RFID Readers

Jan 25th 2007
MILPITAS, CA - January 25, 2007 - A new high performance quadrature modulator from Linear Technology is optimized for 850MHz to 965MHz GSM, CDMA2000, ISM, and RFID modulator applications. The LT5571 accepts I (In phase) and Q (Quadrature phase) baseband signals and modulates directly to RF. Its Zero or Low IF transmitter architecture ...

 

High Linearity Direct Conversion Quadrature Modulator Simplifies Design for 850 - 965MHz Wireless Transmitters & RFID Readers

May 18th 2006
MILPITAS, CA - May 18, 2006 - A new high performance quadrature modulator from Linear Technology is optimized for direct conversion from baseband to the 850-965MHz frequency band, providing a cost-effective solution for GSM, EDGE, CDMA2000 basestations and 900MHz RFID readers. The LT5558's I (In phase) and Q (Quadrature phase) ...

 

DC1017A - LT5558EUF | 600-1100MHz I-Q Modulator w/ Hi-Z BB Rin, Vcm = 2.1V

May 3rd 2006
DC1017A - Demo Board for:LT5558 - 600MHz to 1100MHz High Linearity Direct Quadrature Modulator ...

 

DC945A - LT5572EUF | 2GHz I/Q Modulator w/ HiZ + 0.5VDC Bias Demo Bd.

Dec 21st 2005
DC945A - Demo Board for:LT5572 - 1.5GHz to 2.5GHz High Linearity Direct Quadrature Modulator ...

 

High Linearity Direct Conversion Quadrature Modulator Drives Cost and Performance for GSM Basestations & RFID Readers

Nov 14th 2005
MILPITAS, CA - November 14, 2005 - A new high performance quadrature modulator from Linear Technology is optimized for 850MHz to 965MHz GSM, CDMA2000, ISM, and RFID modulator applications. The LT5568 accepts I (In phase) and Q (Quadrature phase) baseband signals and modulates directly to the RF transmission frequency. Its Zero-IF ...

 

DC966A - LT5568EUF | 900MHz I/Q Modulator

Nov 8th 2005
DC966A - Demo Board for:LT5568 - 700MHz to 1050MHz High Linearity Direct Quadrature Modulator ...

 

DC831A - LT5518EUH | I/Q Modulator with Voltage BB Interface

Feb 1st 2005
DC831A - Demo Board for:LT5518 - 1.5GHz - 2.4GHz High Linearity Direct Quadrature Modulator ...

 

DC729A - LT5528EUF 2GHz I/Q Modulator W/Current BB Interface

Nov 16th 2004
DC729A - Demo Board for:LT5528 - 1.5GHz to 2.4GHz High Linearity Direct Quadrature Modulator ...