Lionheart Northwest RF Microwave Equipment, EMC Test Equipment RF/Microwave, EMC and
Test & Measurement Solutions
for the Pacific Northwest
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Active RF/Microwave Components from MITEQ

MITEQ is a recognized leader in the advanced development of RF and microwave products and sub-systems for both military and commercial applications. These component solutions are backed by MITEQ's 3-Year Warranty and most are available as RoHs Compliant components.

Customize Your Components: MITEQ maintains dedicated engineering resources to modify our standard designs in support of custom-generated specifications.

Active RF Components, RF Component, Amplifier, Attenuator, Bias Tee, Converter, Fiber Optic Link, Frequency Discriminator, Frequency Synthesizer, Mixer, Modulator, Multiplier, Oscillator, Phase Shifter, PIN Diode Switch
Amplifiers Fiber Optic Links Modulators
Attenuators Frequency Discriminators Multipliers
Bias Tees Frequency Synthesizers Oscillators
Converters Mixers Phase Shifters
    PIN Diode Switches

MITEQ offers a full line of analog and digital PIN Attenuators with attenuation ranges of 60 dB on all of our standard products. We also offer custom products including an 8-bit digital attenuator with an LSB of 0.125 dB and maximum attenuation of 80 dB.

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Analog PIN Diode Attenuators Digital PIN Diode Attenuators Digital Phase Invariant Attenuators

MITEQ manufactures and designs high performance Microwave Bias Tees that operate from 30 kHz to 40 GHz. These Bias Tee products feature: ultra-broadband performance, low insertion losses, off-the-shelf delivery and compact designs.

MITEQ's Bias Tees are suitable for 40 Gb systems and typical Bias Tee applications include: OC768 transmitters and receivers, general purpose test and measurement systems. Some bias tee options are available such as custom frequency bandwidths and different connector outputs.

Additional Bias Tee Applications Include: Biasing for photodiodes (vacuum and solid state), Microchannel plate detectors, transistors, and triodes. High frequencies are not leaking into a common power supply rail and noise from the power supply does not appear on the signal line.

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Bias Tees

MITEQ's converter modules include, but are not limited to single-, dual-, three-, four- and five-channel converters. With extensive design options these systems and sub systems can include low-noise, minimized PM noise, chanel to chanel tracking, remote band/blanking/BIT selection and internal crystal references to name a few.

Some packaging options include: Weather proof enclosures, desktop enclosures, and hermetically sealed.

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Upconverters Downconverters Internal IO Internal Reference Multi-Channel

MITEQ designs and manufactures a broad range of high-quality Fiber Optic Links. These fiber optic links can include: small compact size, bandwidths from 5 kHz to 18 GHz, low noise, high dynamic range, cooled and un-cooled DFB laser, plug and play so there are no external control circuits required.

Fiber Optic Links include a transimpedance amplifier in both the fiber optic transmitter and fiber optic receiver. These fiber optic products include operational status monitor pins and much more.

Fiber Optic Links are characterized using a specific transmitter and receiver. It is often possible to choose alternative transmitters and receivers to improve performance, or reduce cost.

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Fiber Optic Links Fiber Optic Transmitters Fiber Optic Receiver

MITEQ manufactures two distinctly different types of Frequency Discriminators. Both types are utilized to convert an input frequency to a bipolar DC voltage corresponding to frequencies above and below crossover (center frequency). Typical applications of Frequency Discriminators include automatic frequency control (AFC) systems and high-fidelity FM demodulation systems.

The narrow bandwidth type uses an input limiting amplifier to drive two staggered tuned L-C circuits. Opposing rectification of the circuits create the discriminator 'S' curve. A video amplifier is utilized to provide adequate output slope (specified in mV/MHz). The ability to precisely align the skirts of the tuned circuits, which represents the linear bandwidth, is the major advantage of this type of design.

The wide bandwidth type of Frequency Discriminators employ delay line techniques to achieve the desired frequency detection. A limiting amplifier drives an in-phase power divider, where one port is delayed an appropriate amount and applied to a double-balanced mixer being used as a phase detector. A wide bandwidth video amplifier takes advantage of this design's extremely wide demodulation bandwidth. The ability to process narrow input pulse widths with minimal distortion is the fundamental advantage of this type of frequency discriminator.

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Frequency Discriminators

MITEQ designs and manufactures various types of Frequency Synthesizers, including sources based on phase-locked-loop (PLL) technology to lock the phase of a voltage-controlled oscillator (VCO) to that of an inherently more stable reference source, such as a temperature-compensated crystal oscillator (TCXO) or an oven-controlled crystal oscillator (OCXO). Such synthesizers can be designed with a single loop for optimal frequency switching speed, or with multiple loops when lower noise performance is required. In essence, they can be called "integer-N" synthesizers where N is the multiplication factor used to determine the output frequency as a multiple of the reference source frequency.

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Frequency Synthesizers

MITEQ designs and manufactures one of the most extensive Mixer product lines on the market today. There are over 400 Mixers in the standard catalog, with RF frequencies up to 50 GHz.

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Single Balanced Mixers Double Balanced Mixers Triple Balanced Mixers Surface Mout Mixers
Sub-Harmonic Mixers Waveguide Mixers Low Noise Mixers IQ Mixers
Image Rejection Mixers Passive Mixers Active Mixers RoHS Compliant Mixers
Microwave Mixers Spaceborne Mixers    

A modulator commonly varies some aspect (amplitude, phase or frequency) of an RF carrier (f°, in proportion to a much lower frequency video or digital input signal (fm). In general, the input frequency components of the modulation typically extend from DC to 100 MHz, except for fast data links. In order to preserve the information content superimposed on the RF carrier, one must insure that the output system bandwidth is adequate to pass both upper and lower sidebands (i.e. fo + fm) without distortion. In fact, system amplifier and channel distortion often will add residual AM or PM modulation to an otherwise clean transmitter.

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Biphase Modulators (BP SK) IQ Modulators (QP SK) Double Sideband Modulators
Single Sideband Modulators Modulation Driven Modulators Carrier Driven Modulators

Schottky diode Frequency Multipliers are lowest cost and require the least input power (+10 dBm). Output noise is at room temperature (KTBW). The resulting current waveforms, however, have a high duty cycle (ie, square wave=50%) and therefore, higher multiplier harmonics above the fifth decay quickly.

Step-recovery diodes have impulsive waveforms with comb-like output spectrums. The Frequency Multiplier input circuit is more complex requiring a compromise between bandwidth and efficient coupling to the low diode series resistance. The required input power is a function of the SRD capacitance and quickly rises with frequency (+20 dBm typical at 1 GHz).

The hyper abrupt varactor diode (indistinguishable at high frequencies from the SRD) yields the higher output powers and efficiency, provided that unwanted sidebands are reactively terminated. MITEQ has successfully made efficient frequency doublers and prescalers (halfers) at 10 and 20 GHz.

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2x Frequency Multipliers 3x Frequency Multipliers 4x Frequency Multipliers
5x Frequency Multipliers 6x Frequency Multipliers  

MITEQ manufactures and designs one of the most extensive Frequency Oscillator product lines on the market today.

MITEQ's standard oscillator product line includes: high-value phase-locked coaxial resonator oscillators, phase-locked coaxial resonator oscillators, fundamental/multiplied phase-locked coaxial resonator oscillators, lowest noise phase-locked dielectric resonator oscillator, ultra low-noise phased-locked dielectric resonator oscillators, variable frequency multi-source oscillators, phase-locked coaxial resonator oscillators, multiplied phase-locked coaxial resonator oscillators, phase-locked crystal oscillators, ultra low-noise crystal oscillator, multiplied crystal oscillator to 1 GHz.

MITEQ also offers a product line of free-running Dielectric Resonator Oscillators which includes mechanically-tuned dielectric resonator oscillators, temperature compensated dielectric resonator oscillators and electronically-tuned coaxial oscillators.

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Free Run Frequency Oscillators Phase Locked Frequency Oscillators Coaxial Resonator Oscillators (CRO) Dielectric Resonator Oscillators (DRO)

MITEQ designs and manufactures a standard line of high quality Phase Shifters. We specialize in developing phase shifters for critical space, telemetry, transceiver, radar and EW applications.

Solid-state Phase Shifters incorporate a wide variety of techniques to achieve high performance over a wide range of specification requirements. A combination of switched line, loaded line, and switched reflection techniques are used to achieve minimum loss and increased performance in constant phase designs.

All Phase Shifter designs are implemented using microstrip construction which enables circuits to achieve high isolation and low VSWR. Integral TTL compatible logic circuits are included in all digital phase shifters as standard. Designs are optimized to handle power levels as high as 1 Watt CW.

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Digital Phase Shifters Analog Phase Shifters