Narda Holdings Family of Companies:
  • Narda-MITEQ
  • iRF Solutions
  • Narda-STS - Narda Safety Test Solutions
Narda-MITEQ Brands:
  • Narda-ATM
Narda-MITEQ Authorized Global Distributor:

Narda-MITEQ Literature Download - Click here to download
Customer Survey

IQ Modulators

IQ Modulators
IQ Modulators are also commonly referred to as Quadrature Modulators or QPSK Modulators (for Quadrature Phase Shift Keying).

All modulators and SSB upconverters require that at least one of the input frequency bands (carrier or modulation) has sufficient power to turn on the semiconductors. All modulators yield a frequency spectrum that utilizes both sidebands on either side of the output suppressed carrier. SSB upconverters, however, employ an internal IF 90° hybrid to yield only one RF sideband output. This is offset above or below the input LO by the IF frequency.

Full IQ Modulators Catalog Listing

Modulator Search
Not all fields are required.
Frequency Ranges
RF Output Min to Max
RF Carrier Min to Max
IF/Modulation Input Min to Max

Modulator Type  
Sideband Type  
Driven By  
Package Type  

Results Per Page
Modulator Search By Model
Partial Model numbers may be entered.
Results Per Page

Schottky diode (standard) modulators have the greatest speed and bandwidths, but yield RF output powers of typically less than 0 dBm. Greater output power can be achieved by using higher level diodes with proportional increases in carrier power. Some carrier driven units are used
when the modulation input to RF output must be linear (low harmonics). A typical application is for digital QPSK with cosine shaped pulses (for minimum bandwidth). Many SSB upconverters also require input-to-output signal linearity, thus requiring LO drive.

IQ Modulators:

Carrier Driven IQ Modulators
Modulation Driven IQ Modulators

Narda-MITEQ designs and manufactures a broad range of standard frequency modulators, which include:

BPSK and Bi-Phase Modulators
Double-Sideband Upconverters
QPSK and QAM modulators.

Narda-MITEQ maintains dedicated engineering resources to modify our standard designs in support of custom-generated specifications.

All modulator products are backed by Narda-MITEQ's Warranty, and most are available as RoHS Compliant components.


Please Contact Narda-MITEQ for more information:

Narda-MITEQ Sales Team
Phone: +1 (631) 439-9220

More Contact Options...

Narda-MITEQ · 435 Moreland Road · Hauppauge NY 11788 USA · 631-231-1700
FacebookLinkedInX (Twitter)