YIG Oscillators | Teledyne Microwave Solutions

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Features

Multi-octave tuning ranges including bands such as 2–8 GHz, 4–18 GHz, and 3–20+ GHz depending on model.
Ultra-low phase noise, typically around −120 to −125 dBc/Hz at 100 kHz offset for Tiny YIG and connectorized oscillators.
Tiny YIG permanent-magnet designs in ultra-compact PCB or surface-mount outlines for space-constrained systems.
Connectorized oscillators in 1 inch and 1.25 inch cube or 2 inch cylindrical housings with SMA RF outputs and integral buffer amplifiers.
Flat output power over tuning range and temperature, with internal amplifiers providing high output levels for test and LO applications.
Options for analog and digital drivers, phase-lock and FM modulation capability, and MIL-qualified environmental screening.

Benefits

Replaces multiple narrowband VCOs with a single broadband YIG source, simplifying RF architectures and reducing component count.
Provides very low phase noise to enhance EW and radar receiver sensitivity, jammer effectiveness, and test system dynamic range.
Supports wideband sweeps and agile frequency hopping for threat simulation, RWR testing, and broadband measurement.
Offers compact, SWaP-efficient Tiny YIG options for PXI, portable instruments, and embedded front ends.
Delivers rugged, hermetically sealed connectorized oscillators suitable for harsh MIL environments with temperature-compensated magnets.
Reduces integration risk by using catalog-proven YIG designs backed by Teledyne’s defense-focused manufacturing and driver options.

Applications

Local oscillators for EW receivers, radar warning receivers, and ELINT systems.
Sweep oscillators and broadband signal sources in RF and microwave test equipment.
Low noise synthesizer building blocks in radar and communications systems.
PXI and modular instrumentation, portable spectrum analyzers, and signal generators using Tiny YIG sources.
Jammer exciters and threat simulators requiring agile, low phase noise microwave sources.
ATE modules and production test stations for multi-band RF and microwave products.

Specifications

Frequency coverage: Connectorized models cover tuning ranges such as 2–8 GHz, 2–4 GHz, 4–18 GHz, and 2–20 GHz; Tiny YIG oscillators span bands including 3–6, 3–8, 4–8, 5–10, 7–11, 6–13, 8–16, and 10–20.5 GHz.
Output power: Minimum output powers are typically +10 to +16 dBm for connectorized oscillators and about +3 to +6 dBm for Tiny YIG devices, with ±2 to ±2.5 dB variation over frequency.
Phase noise: Representative phase noise values are around −120 dBc/Hz at 100 kHz offset for connectorized oscillators and approximately −123 to −125 dBc/Hz at 100 kHz offset for Tiny YIG oscillators, depending on band.
Linearity and hysteresis: Tuning linearity is typically better than about 0.1% for connectorized oscillators, with hysteresis and drift controlled to tens of MHz across the tuning range.
Harmonics and spurious: Harmonics are generally specified around −12 dBc maximum, with low spurious levels suitable for high dynamic range receivers and test systems.
Environmental and packaging: Available in commercial and MIL temperature ranges, with hermetically sealed, temperature-compensated magnet structures and options for surface-mount, PCB, cube, and cylindrical housings.

Teledyne Microwave Solutions provides a broad family of YIG-tuned oscillators (YTOs) that deliver extremely low phase noise and multi-octave tuning for demanding EW, radar, communications, and RF test applications. These oscillators exploit the very high Q of yttrium iron garnet resonators and the linear relationship between resonance frequency and applied magnetic field to generate clean microwave signals over bands spanning roughly 0.5 to 26 GHz, with many catalog models covering ranges such as 2–8, 2–10, 4–18, 6–18, 8–18, 12–20, 2–18, and 2–20 GHz. [web:42][web:43][web:72][web:76]

Across the portfolio, Teledyne offers connectorized cube and cylindrical YIG oscillators, board-mount and Tiny/TINYig TO-8 oscillators, and integrated YIG-based synthesizers, enabling engineers to choose the level of integration and mechanical format that best fits their architecture. Classic connectorized oscillators in 1 inch and 1.25 inch cube and 2 inch cylindrical packages include integral RF buffer amplifiers for flat output power and isolation, while board-mount and Tiny/TINYig devices provide permanent-magnet YIG performance in compact PCB and surface-mount outlines. Teledyne’s YIG-based synthesizers wrap these oscillators with phase-locked loop control, drivers, and interfaces such as USB and SPI to create plug-and-play, low-phase-noise signal sources for test instruments. [web:42][web:43][web:72][web:73][web:85][web:121]

A key strength of YIG oscillators is multi-octave tuning with excellent linearity, typically on the order of ±0.1–0.15 percent across the tuning range for many cube oscillators, with hysteresis kept to tens of megahertz even on wideband 2–18 and 2–20 GHz models. Representative connectorized oscillators provide output powers from about +8 to +15 dBm, with power flatness typically within ±2 to ±4 dB, temperature drift on the order of 15–30 MHz over full military temperature ranges, and phase noise figures around −120 to −125 dBc/Hz at 100 kHz offset for bands up to about 20 GHz. Extended-range 2–20 GHz sources still maintain respectable performance, often around −110 dBc/Hz at 100 kHz offset. [web:43][web:72][web:76]

Teledyne’s Tiny/TINYig oscillators are among the smallest YIG-tuned oscillators available, providing ultra-low phase noise in TO-8 style packages optimized for PCB and SMT integration. Tiny/TINYig devices cover bands such as 3–6, 3–8, 4–8, 5–10, 7–11, 6–13, 8–16, and 10–20/20.5 GHz, with guaranteed phase noise levels as low as about −125 dBc/Hz at 100 kHz offset for 3–8 and 6–13 GHz types and around −123 dBc/Hz for 8–16 GHz versions. Typical minimum output power ranges from +3 to +6 dBm depending on band, and FM coils provide modulation bandwidths up to several hundred kilohertz, allowing the oscillators to support phase-locking and wideband modulation. These RoHS-compliant designs reduce size, weight, and power while preserving the low phase noise and wide tuning associated with YIG technology. [web:73][web:74][web:85][web:159]

At the technology level, YIG oscillators typically use common-gate FET or common-base bipolar topologies to achieve wide tuning bandwidths and very low phase noise. Common-gate FET oscillators are often used for extremely wide tuning ranges such as 2–8 GHz, 6–18 GHz, or 20–40 GHz, while common-base bipolar designs deliver some of the lowest phase noise among non-cryogenic microwave oscillators. The magnet bias can be provided by electromagnets, permanent magnets, or hybrid approaches, with Teledyne making extensive use of temperature-compensated magnets in both connectorized and Tiny/TINYig families to improve stability over temperature. [web:42][web:72][web:78]

All Teledyne YIG oscillators are specified using four interrelated categories of parameters: RF, magnet, power consumption, and environmental conditions, which together define overall performance and cost. RF specifications include tuning range, output power and flatness, harmonic and spurious content, phase noise at specified offsets, linearity, hysteresis, and temperature drift. Magnet and tuning specifications describe coil sensitivities in MHz/mA, coil resistance and inductance, and modulation bandwidth for both main and FM coils. Power specifications cover DC supply voltages and currents, while environmental ratings define operating and storage temperatures, shock and vibration tolerance, and hermeticity. [web:72][web:78]

Teledyne also offers optional FM coils and low-noise drivers to support phase-locking and modulation. Internal FM coils can provide deviations of tens of megahertz at hundreds of kilohertz modulation rates, enabling the oscillators to be phase-locked to ultra-stable references for even lower close-in phase noise or to support frequency-modulated waveforms. Dedicated drivers, including voltage-to-current converters and digital-controlled units, translate linear voltage ramps or digital tuning words into coil currents, with incidental FM on the order of tens of kilohertz peak-to-peak to preserve the intrinsic low noise of the YIG source. [web:43][web:72][web:76]

These characteristics make Teledyne’s YIG oscillators particularly attractive for sweep oscillators, low noise synthesizers, receiver local oscillators, jammer exciters, and automated test equipment (ATE) modules, as noted in classic YIG oscillator literature. In test and measurement, YIG-based synthesizers and oscillators provide broadband, low-phase-noise sources for spectrum analyzers, signal generators, and custom test sets; in EW and radar systems, multi-octave YIG LOs support agile frequency hopping and wideband coverage while maintaining the phase noise performance needed for high dynamic range detection and tracking. [web:43][web:46][web:76][web:80][web:121]

From a procurement standpoint, Teledyne Microwave Solutions has built a reputation as a single-source supplier for YIG filters, oscillators, and integrated microwave products, with YIG oscillators referenced in catalogs and partner summaries as covering 0.5 to 26 GHz with industry-leading phase noise, multi-octave bands, flat power output, and FM coils for phase locking. Everything RF’s searchable catalog lists numerous Teledyne YIG oscillators by tuning range, output power, and package type, reinforcing the breadth of the portfolio and the ability to match specific system requirements. [web:44][web:48][web:72][web:76]

Engineers and buyers searching with phrases such as “YIG oscillator,” “YIG-tuned oscillator,” “low phase noise YIG oscillator,” “multi-octave YIG LO,” “2–18 GHz YIG oscillator,” “Tiny YIG oscillator,” “TINYig oscillator,” “board-mount YTO,” “connectorized YIG oscillator,” and “0.5–26 GHz low phase noise YIG source” will find Teledyne offerings that align closely with these needs. Related concepts include YIG-based synthesizers, FM-coil-equipped YTOs for phase-locking, wideband sweep oscillators, integrated LO modules for EW receivers, and RoHS-compliant TO-8 YIG oscillators. Together, these products allow designers to implement broadband, low-phase-noise signal generation in platforms ranging from lab instruments and PXI modules to fielded radar, EW, and communications systems. [web:42][web:43][web:72][web:73][web:76][web:85]

FAQs

1. What YIG oscillator families does Teledyne offer?

Teledyne offers connectorized YIG oscillators in cube and cylindrical packages, as well as Tiny YIG permanent-magnet oscillators in compact PCB and surface-mount formats for broadband LO and signal source applications.

2. What tuning ranges are available for Teledyne YIG oscillators?

Standard tuning ranges include bands such as 2–8 GHz, 2–4 GHz, 4–18 GHz, 6–18 GHz, and 2–20 GHz for connectorized models, and 3–6, 3–8, 4–8, 5–10, 7–11, 6–13, 8–16, and 10–20.5 GHz for Tiny YIG oscillators.

3. How do YIG oscillators compare to conventional VCOs?

YIG oscillators provide significantly lower phase noise and wider multi-octave tuning than many conventional VCOs, making them better suited for high-dynamic-range EW receivers, radar, and precision RF test systems.

4. What phase noise performance can I expect?

Typical Teledyne YIG oscillators achieve phase noise on the order of −120 dBc/Hz at 100 kHz offset for connectorized units and approximately −123 to −125 dBc/Hz at 100 kHz offset for Tiny YIG models, depending on frequency band.

5. How are Teledyne YIG oscillators tuned and controlled?

YIG oscillators are tuned by varying coil current through a driver, which may be provided as a separate voltage-to-current module or integrated driver; optional FM coils support higher modulation bandwidths.

6. Are Tiny YIG oscillators suitable for surface-mount assembly?

Yes, Tiny YIG oscillators are available in PCB and surface-mount variants, designed for compact RF front ends and PXI or modular instrumentation that require minimal footprint and low power consumption.

7. Can Teledyne YIG oscillators be phase-locked?

Teledyne oscillators can be used in phase-locked loops, and Teledyne also offers drivers and application guidance for phase-locking YIG sources in low noise synthesizer architectures.

8. What environmental conditions can these oscillators withstand?

With hermetically sealed structures and temperature-compensated magnets, Teledyne YIG oscillators are suitable for harsh MIL environments, including wide temperature ranges, shock, and vibration, when ordered with appropriate screening.

9. How do I choose between Tiny YIG and connectorized oscillators?

Use Tiny YIG when board space, SWaP, and integration into PCBs are priorities; choose connectorized oscillators when you need a rugged module with SMA interfaces, higher output power, and straightforward rack or chassis integration.

10. Can Teledyne customise YIG oscillators for specific programmes?

Yes, Teledyne can customise tuning ranges, phase noise targets, packaging, driver interfaces, and environmental screening to meet programme-specific requirements in defence, aerospace, and test applications.