MICROWAVE

DATASHEET | APRIL 2013

© 2013 EMCORE Corporation

626-293-3400

specialty-sales@emcore.com

www.emcore.com

Information contained herein is deemed to be reliable and accurate as of the issue date. EMCORE reserves the right to change the design or specifications at any time without notice.

SITU-SIRU Series Externally-Modulated

Transmitters & Receivers

The EMCORE Small Integrated Transmitter Unit (SITU) and Small Integrated

Receiver Unit (SIRU) are high performance broadband externally modulated

transmitter and receiver modules. Three transmitter RF operating bandwidths are

available: 0.05 – 18, 0.05 – 22 and 0.05 – 40 GHz. Two receiver RF operating bands

are available: 0.05 – 22 and 0.05 – 40 GHz. In addition, the units are DC-coupled,

so they will pass RF frequencies down to 10 kHz. Two optical output power

ranges of 7-9 dBm or 10-12 dBm are available for each transmitter band.

The SITU-SIRU series modules are fully integrated units that contain both the

optics and the control electronics. Only DC input voltages, fiber optic and the RF

signal are required for operation.

The units can be used to construct transparent links for antenna remoting. The

broad bandwidth is intended for applications such as electronic warfare and Ku

band systems. Other applications include delay lines and signal processing

systems.

The system operates at a nominal wavelength of 1550 nm. Wavelength selected

transmitter lasers on the ITU grid are also available to support multi-channel

DWDM applications.

Applications

„

RF and Microwave Antenna Signal Distribution

„

EW Systems

„

Broadband Delay-Line and Signal Processing

Systems

„

Frequency Distribution Systems

„

Radar System Calibration

„

Phased Array Antenna Systems, Interferometric

Antenna Arrays

Performance Highlights

Parameter

Min

Typical

Max

Units

Frequency Range

.05

-

40

GHz

RF Input Power

-

-

+25

dBm

Wavelength

-

1550

-

nm

Optical Output Power

7

-

12

dBm

Temperature Range

-40

-

70

°C

Features

„

Three Operating Bands - Eliminates the

Performance and Cost Penalty of Block Up/

Down Conversion

- 50 MHz - 18 GHz

- 50 MHz - 22 GHz

- 50 MHz - 40 GHz

„

Low RIN Source Laser, Laser and Modulator

Bias Control Circuit and High Optical Input

Power Photodiode - Provides High Dynamic

„

Multiple Optical Output Powers - Provides the

Correct Power Level for the Application

- 7 dBm min

- 10 dBm min

„

DWDM Operation - Increases Transport Capac-

ity Without Increasing Fiber Count

„

Fully Integrated Unit - Reduces Integration

Costs

0.05 - 40 GHz, 1550 nm Externally Modulated Self-Contained L-K

Band Transmitters and Fiber Optic Receivers

SITU3000

SIRU3000