UNI-T USG5022M-P | Professional RF Signal Generator with Mechanical Attenuator (9 kHz to 22 GHz)

Overview

The UNI-T USG5022M-P RF signal generator delivers premium performance for demanding RF applications, featuring extended frequency coverage from 9 kHz to 22 GHz with exceptional signal purity. Distinguished by its mechanical attenuator technology, this professional-grade instrument provides enhanced output power up to +23 dBm and superior level stability crucial for satellite communications testing, radar systems, power amplifier characterization, and production environments where signal integrity is paramount.

Engineered for the most challenging test scenarios, the USG5022M-P combines precision frequency control (0.001 Hz resolution) with comprehensive modulation capabilities and an intuitive 5-inch capacitive touchscreen interface. The mechanical attenuator variant ensures consistent performance even at high output levels, delivering the reliability and accuracy RF professionals demand when testing devices with high insertion loss or requiring strong drive signals across K-band microwave frequencies up to 22 GHz.

USG5000M RF Generator

Key Features

• Mechanical Attenuator Technology - Provides superior output level stability and enhanced maximum power compared to standard electronic attenuators
• Extended K-band Frequency Coverage - Generates signals from 9 kHz to 22 GHz with ultra-fine 0.001 Hz resolution for precise testing
• Enhanced Output Power - Delivers up to +23 dBm (250 MHz to 3.6 GHz) for testing high-attenuation components and systems
• Superior Signal Quality - Low phase noise (<-122 dBc/Hz @ 1 GHz, 20 kHz offset) ensures accurate measurements
• Improved SWR Performance - Better standing wave ratio minimizes reflections and measurement uncertainties
• Versatile Modulation - AM, FM, and ΦM capabilities with internal, external, or combined modulation sources
• Intuitive Operation - 5-inch capacitive touch screen with clear visual feedback and logical menu organization
• Flexible Connectivity - Remote control via LAN and USB interfaces for automated testing environments
• Integrated Function Generator - Built-in 50 MHz function/arbitrary waveform generator adds versatility
• Comprehensive Sweep Capabilities - Frequency, amplitude, and list sweep modes with customizable parameters
• Advanced Pulse Modulation - Optional pulse modulation with on-off ratios up to 80 dB (USG5000M-PM)
• Narrow Pulse Generator - Optional pulses as narrow as 20 ns with 10 ns resolution (USG5000M-PG)

Mechanical Attenuator Advantage

The USG5022M-P's mechanical attenuator technology represents a significant upgrade over standard electronic attenuators, providing both higher maximum output power and superior RF performance. This precision-engineered attenuator delivers up to 5 dB more output power across all frequency ranges, enabling testing of components with high insertion loss or receiver sensitivity measurements that require stronger signals. The mechanical design ensures excellent level accuracy and stability even at maximum power levels, critical for consistent results in production testing and research applications.

Beyond raw power advantages, the mechanical attenuator provides superior standing wave ratio (SWR) characteristics, minimizing signal reflections that can compromise measurement accuracy. This improved impedance matching is particularly valuable when testing sensitive RF components where reflection-induced artifacts could mask actual device performance. For applications requiring both high output power and precise level control up to 22 GHz, the USG5022M-P offers an optimal combination of performance characteristics that justify its position as the flagship model in the USG5000M series.

Low phase noise performance

Extended K-band Frequency Coverage

The USG5022M-P offers the most extensive frequency coverage in the USG5000M series, reaching from 9 kHz all the way to 22 GHz. This extended range encompasses the entire K-band (18-27 GHz) range up to 22 GHz, making it ideal for testing cutting-edge communications systems, satellite equipment, automotive radar, and advanced research applications. With frequency coverage beyond traditional microwave boundaries, the USG5022M-P provides a future-proof investment for evolving high-frequency technologies.

The instrument maintains exceptional signal quality across its entire range, with carefully engineered signal paths that ensure consistent performance even at the highest frequencies. The remarkable 0.001 Hz frequency resolution is maintained across the entire 22 GHz span, enabling precise signal placement for applications requiring exact frequency control. For engineers working at the frontiers of RF technology, the USG5022M-P provides the extended frequency range needed for comprehensive testing without the need for multiple instruments.

Enhanced Output Power Performance

The USG5022M-P delivers industry-leading output power across its entire frequency range, providing the signal strength needed for challenging RF testing applications. With maximum output levels of +23 dBm (250 MHz to 3.6 GHz), +20 dBm (3.6 GHz to 7.5 GHz), +18 dBm (7.5 GHz to 14 GHz), and +16 dBm (14 GHz to 22 GHz), this model significantly outperforms standard electronic attenuator versions. This enhanced power capability is particularly valuable when compensating for cable losses, driving power amplifiers, or testing receiver sensitivity through complex signal paths at higher frequencies.

The mechanical attenuator design maintains excellent level accuracy across the full power range, ensuring consistent test conditions even at maximum output. This combination of high output power and precise level control makes the USG5022M-P ideal for production testing environments where signal integrity across multiple test stations is critical. The robust attenuator design also provides excellent reliability under continuous high-power operation, making it suitable for applications requiring sustained maximum output levels at extended frequency ranges.

Comprehensive Modulation Capabilities

The USG5022M-P provides versatile modulation capabilities essential for thorough microwave and millimeter-wave system testing. Standard analog modulation includes AM with depths up to 99%, FM with deviation up to 10 MHz, and phase modulation up to 5 radians. The flexible modulation sources allow for internal, external, or combined operation, adapting to diverse testing scenarios. Each modulation type features precise control of parameters, enabling accurate simulation of real-world signal conditions across the extended frequency range.

For applications requiring pulsed RF signals, the optional USG5000M-PM pulse modulation capability delivers outstanding on-off ratios up to 80 dB (up to 6.5 GHz) and up to 70 dB (6.5 GHz to 22 GHz) with fast rise/fall times below 20 ns. The pulse modulation can operate in various modes including free-running, triggered, gated, and customized pulse train patterns. When combined with the optional USG5000M-PG narrow pulse generator, the system can generate pulses as narrow as 20 ns with 10 ns resolution, perfect for radar system testing and pulse characterization applications. The mechanical attenuator further enhances pulse performance by providing more powerful pulse signals with better on-off characteristics.

Analog Modulation

High-precision Pulse Generator

The USG5022M-P features a stable clock source and offers optional pulse modulation and a narrow pulse generator. The USG5000M-PG option delivers a minimum pulse width of 20 ns with a resolution of 10 ns, meeting the requirements of advanced radar systems, satellite communications testing, and high-speed digital applications. The pulse generator provides exceptional timing precision and stability across multiple operating modes.

With the optional pulse modulation package, you can generate customized pulse trains with precisely controlled timing parameters. Multiple pulse modes are supported, including Free-Run, Square, External Triggered, Adjustable Doublet, External Trigger Doublet, Gated, External Pulse, and Pulse Train. The outstanding on-off ratio of ≥ 80 dB at frequencies up to 6.5 GHz (≥ 70 dBc from 6.5 GHz to 22 GHz) ensures clear signal transitions with minimal bleed-through, while fast rise/fall times below 20 ns enable accurate simulation of high-speed pulsed systems. The mechanical attenuator enhances these pulse modulation capabilities by providing more powerful pulse signals and improved on-off ratio performance across the extended frequency range.

High-precision Pulse Generator

Advanced Sweep Functions

The USG5022M-P features comprehensive sweep capabilities that simplify component characterization and system response testing across microwave and millimeter-wave frequencies. The instrument supports frequency, amplitude, and list sweep modes with customizable step sizes and dwell times. Engineers can perform frequency sweeps across the full 9 kHz to 22 GHz range with linear or logarithmic step patterns, enabling efficient measurement of frequency-dependent parameters like filter responses or amplifier gain flatness.

For more complex testing requirements, the list sweep mode allows creation of custom frequency-amplitude point sequences, ideal for focused testing at specific frequencies of interest. Sweep operation can be triggered via multiple methods including free-running, external trigger, manual key press, or computer command, providing flexibility for both manual testing and automated sequences. The mechanical attenuator ensures excellent level accuracy throughout sweeps, even when operating near maximum output power, making it ideal for power amplifier characterization and high-dynamic-range measurements across extended frequency ranges.

Sweep

Intuitive User Interface

The USG5022M-P features a 5-inch capacitive multi-touch screen with an intuitive user interface that accelerates test setup and enhances productivity. The flat design with clear parameter organization allows for quick access to commonly used functions, while the logical menu structure ensures even complex operations can be performed with minimal keystrokes. The touch interface supports gestures for common operations, reducing setup time and allowing engineers to focus on test results rather than instrument configuration.

Visual feedback is provided through clear waveform displays for both output and modulating signals, enabling immediate verification of signal characteristics. The interface allows seamless switching between time-domain and frequency-domain views, providing comprehensive signal visualization. Numerical parameters are displayed with high visibility and logical grouping, ensuring settings are easily verifiable at a glance. This thoughtful interface design reduces learning curves and improves testing efficiency in both research and production environments, even when working with complex millimeter-wave signals.

Flat display interface

Integrated Function Generator

The USG5022M-P includes a built-in 50 MHz function/arbitrary waveform generator that extends the instrument's versatility beyond RF applications. This integrated LF generator produces high-quality sine waves up to 50 MHz, square and pulse waveforms up to 15 MHz, and triangular waves up to 3 MHz. With output amplitude adjustable from 1 mVpp to 2 Vpp and DC offset control, it provides the signal flexibility needed for various testing applications without requiring additional equipment.

The function generator includes advanced capabilities such as linear and logarithmic sweep functions and comprehensive modulation options including AM, FM, and pulse modulation. For digital communications testing, it supports ASK, FSK, PSK, and QAM modulation with various digital patterns. This integration delivers significant value by combining two essential instruments in one compact unit, saving both bench space and equipment costs while maintaining signal generation quality across both baseband and millimeter-wave frequency ranges.

Function/ Arbitrary Waveform Generator

Optional Power Meter Option

The optional USG5000M-PK Power Meter Option transforms the USG5022M-P into a comprehensive RF test solution by adding accurate power measurement capabilities. Connected through the front panel USB port, this accessory enables precise RF power measurements, particularly valuable for calibrating output power levels and verifying signal integrity at the device under test. The power measurement system allows direct verification of actual received power, eliminating uncertainty in test setups at microwave and millimeter-wave frequencies.

A key capability of the Power Meter Option is the line loss calibration function, which automatically compensates for cable and fixture losses in the test path. This ensures that the power level reaching the device under test matches the specified value, improving measurement accuracy and test consistency. This feature is especially valuable when using the USG5022M-P's enhanced output power capabilities in complex test setups with multiple connection points or long cable runs, particularly at higher frequencies where losses become more significant. By combining signal generation and power measurement in a single coordinated system, the Power Meter Option streamlines test procedures and reduces the need for additional test equipment.

Power Meter Option

Professional Applications

K-band Satellite Communications

The USG5022M-P's extended frequency coverage up to 22 GHz makes it ideally suited for testing K-band satellite communications systems and components. This frequency range encompasses key satellite bands including C-band (4-8 GHz), X-band (8-12 GHz), Ku-band (12-18 GHz), and portions of the K-band (18-22 GHz). The enhanced output power and mechanical attenuator ensure adequate signal levels even when testing through complex fixtures or long cable runs, while the excellent phase noise performance is critical for testing sensitive satellite receivers and transponders. The optional pulse modulation capabilities support testing of TT&C (Telemetry, Tracking, and Command) systems. For satellite equipment manufacturers, the USG5022M-P provides the extended frequency coverage needed for complete system verification in a single instrument.

Automotive Radar Development and Testing

Modern automotive radar systems operate at increasingly higher frequencies, and the USG5022M-P's extended range up to 22 GHz makes it an excellent choice for developing and testing these systems. The enhanced output power and mechanical attenuator ensure strong, stable signals for testing radar receivers and components. When equipped with the optional pulse modulation capabilities, the instrument can generate precisely-timed radar pulses with fast rise/fall times and excellent on-off ratios. The narrow pulse generator option enables pulses as narrow as 20 ns with 10 ns resolution, meeting the requirements of advanced automotive radar systems. The superior level stability of the mechanical attenuator ensures consistent, repeatable measurements essential for automotive safety systems development and qualification.

Advanced Microwave and Millimeter-wave Component Testing

For engineers developing and testing next-generation microwave and millimeter-wave components, the USG5022M-P offers the extended frequency range, signal purity, and output power needed for thorough characterization. The instrument's comprehensive sweep capabilities streamline the evaluation of frequency-dependent parameters across the entire 9 kHz to 22 GHz range. The mechanical attenuator provides the level stability required for accurate gain, efficiency, and linearity measurements across various operating conditions. When combined with the optional power meter, the USG5022M-P enables closed-loop verification of component performance parameters. The extended frequency range makes it particularly valuable for developing components for emerging wireless technologies, defense electronics, and advanced research applications.

Production and Automated Testing

Manufacturing environments benefit from the USG5022M-P's combination of extended frequency range, high output power, level stability, and automation capabilities. The mechanical attenuator's enhanced reliability under continuous high-power operation makes it ideal for 24/7 production testing, while its superior level accuracy ensures consistent test conditions across multiple stations. The comprehensive remote control options via LAN, USB, or optional GPIB support seamless integration into automated test systems, with the additional output power providing margin for test fixture and cable losses that accumulate in complex production setups. For manufacturers of high-frequency components and systems, the USG5022M-P provides the extended frequency coverage needed to test next-generation products without requiring multiple instruments.

Technical Specifications

Model Comparison

The USG5022M-P is the flagship model in UNI-T's advanced RF signal generator series, offering the widest frequency coverage and enhanced output power. Compared to the USG5014M models, it extends frequency coverage to 22 GHz, providing complete testing capabilities for emerging high-frequency applications.

Available Options and Accessories