E4440-60023 Keysight

Functions

A YIG-tuned oscillator that generates a spectrally pure, wide-tuning-range microwave signal. Functions as the first local oscillator (LO) in a superheterodyne receiver, primarily for spectrum analyzers. Output frequency is controlled by varying the current to a main coil for coarse tuning and an FM coil for fine tuning and modulation. Its low phase noise and broad frequency sweep are critical for downconverting RF input signals for high-performance frequency domain analysis.

Platforms

Multi-octave YIG-tuned oscillator assembly operating from 3-26.5GHz providing phase-locked swept frequency generation with typical phase noise of -105dBc/Hz at 10kHz offset. Integrates YIG sphere resonator with electromagnet tuning coil, driver amplifier, and temperature compensation circuitry. Requires +15V/-5V dual supply rails, 10-bit parallel or SPI digital tuning interface, and provides 0-10dBm leveled RF output via SMA connector. Interfaces with spectrum analyzer mainframe via proprietary backplane connector supporting power, digital control, and analog sweep signals. Used as first local oscillator in microwave spectrum analyzers, signal generators, and network analyzers requiring wide tuning range with low phase noise and fast switching speeds.

Applications

This YIG Tuned Oscillator Assembly is used for generating highly stable, low phase noise microwave signals within test and measurement systems. It operates as a signal source module in bench-top and benchtop instrumentation platforms, interfacing via standard RF connectors, control lines, and power inputs. Common applications include frequency synthesis, calibration of spectrum analyzers and signal generators, radar system testing, and communication system development where precise tunable microwave frequency output is required.

Accessories

Requires mounting in a spectrum analyzer (likely PSA E4440A) for power and control signals. Connects via multi-pin ribbon interface for control signals and coaxial RF connections for signal output. Needs internal DC power supply connections for YIG heating and tuning circuits. Compatible with standard laboratory SMA RF cables for signal routing. May require calibration equipment specific to YIG oscillator performance verification.

Interfaces

YIG tuned oscillator assembly output is typically BNC female for the RF signal, supporting frequencies 2.0 GHz to 20 GHz and output power +10 dBm; frequency tuning via analog voltage input (0–10 VDC, 1 mA max) on rear-mounted multipin connector (not publicly documented per manufacturer, but consistent with aerospace/military-grade YIG oscillator interfaces); assembly is modular, designed for replacement/swap-in operation; no mainframe, backplane, or chassis required; operates as stand-alone signal source with DC power and control interface.

Specifications

YIG Tuned Oscillator Assembly is designed for frequency tuning in RF and microwave applications, using Yttrium Iron Garnet technology for wide frequency range and low phase noise. Operates in spectrum analyzers or signal generators. Interfaces with coaxial connectors for RF input/output and control ports for tuning inputs. Typically integrated into test equipment for communication systems, radar, EMC testing, and RF component characterization, offering high signal purity and stability across GHz frequencies.

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