Detectors, Discriminators, & Limiters
Manufacturers & Services
Diode detectors, discriminators, and limiters cover a very wide range of circuit configurations that perform functions
like demodulating communications signal and signaling the presence of signals. Early detectors were implemented using
vacuum tubes, but of course modern versions use silicon, germanium, GaAs, and other kinds of semiconductor compounds.
Peak detectors, average detectors, video detectors, and others are built out of anything from standard PN junction
silicon diodes to more elaborate constructions like Schottky, Gunn, and Esaki tunnel diodes.
typically consist of a differentiator followed by an envelope detector, as with an FM radio. In general, it is a device
that converts a property of an input signal, such as frequency or phase, into an amplitude variation, depending on
how the signal differs from a standard or reference signal. Whereas a detector can be made of a single diode, resistor
and capacitor, a discriminator is usually a more complex circuit.
Limiters are designed to prevent signals
from exceeding a predetermined level, either to prevent damage to the following circuits, or to prevent signal degradation
beyond a defined amount.
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PMI's organization has been setup to Design, Develop, Manufacture, Test, and Market complex
state-of-the-art Hybrid RF MIC and MMIC Components, Supercomponents, and Subsystems.
products for applications in space, military, commercial,
and consumer electronics systems. DC to 40 GHz.
from PMI's Extensive Line
LNA, VGA, Cryogenic
• Phase Shifters
Analog, Digital• Detectors
• Switch Products
• VCOs & DTOs
• Multifunction Modules
• Integrated Modules
LP, HP, BP, BR,
• I/Q Modulators
• Bi-phase Modulators
• Power Dividers
• Quad Couplers
• DLVAs & SDLVAs
to Your Specifications
Advanced Control Components (now Aeroflex
Control Components - ACC) | advanced-control.com
| Eatontown, NJ
Products include amplifiers, attenuators, detectors, frequency converters, custom integrated
assemblies, limiters, phase shifters, switches, switch matrices, synthesizers. Services include hybrid micro-electronic
assembly, wire bonding, PCB assembly, RF and microwave test to 40GHz, product design.
Agile Microwave Technology | agilemwt.com
RF amplifiers, limiters, switches, and multipliers. Our goal is to cut product cost by
more than 50% by keeping our overhead low, by staying small and focusing on innovative designs which are
inspired by the commercial wireless market. Our goal is to provide same or better performance, size and
quality at a much lower cost through better engineering and outsourcing to U.S. based contract
Cernex | cernex.com
| Sunnyvale, CA
antennas, couplers, isolators, circulators, filters, diplexers, oscillators, noise sources, switches, phase
shifters, transition & adapters, mixers, waveguide products, attenuators, terminations, detectors, subsystems.
Cougar Components (now Teledyne Cougar) | cougarcorp.com
| Sunnyvale, CA
RF and microwave cascadable amplifiers and subsystems in 100 kHz to 12 GHz range. Detectors,
limiters, limiting amplifiers, attenuators, AGC amplifiers, oscillators w/MMIC amplifiers.
Herotek | herotek.com
| San Jose, CA
GaAs FET amplifiers,
low-noise, small signal & power 0.01 to 50 GHz, limiters, detectors, switches, harmonic generators.
For over 25 years we have manufactured precision
microwave attenuators, terminations, and other components, and now
diode detectors for commercial, military, and space applications.
Res-Net Microwave is a leader in the development and production of the metal films required for these types of RF/microwave
attenuators, terminations, and resistors up to 2 kW.
A Sample of Our Product Line
- Coaxial, Stripline, High Power Flange
- Disc, Microwave Carbon Film Rod,
Coaxial Rod, High Power Flange
- SMA, N, Chip, High Power Flange
- Zero-Bias Schottky Diode
program to ANSI/NCSL Z 540, MIL-STD-790, ISO 9001:2008 and NASA Specification NPC 200-3. Calibration to MIL-STD-45662
|In-house photo etch and laser trim capabilities.
Large choice of substrate materials.
Micronetics (now Mercury Systems) | micronetics.com
| Hudson, NH
equipment, noise sources, voltage controlled oscillators, switches, limiters, phase shifters, attenuators.
Planar Monolithics | pmi-rf.com
| Frederick, MD
Successive detection log video amplifiers, detectors, limiters, log amps, frequency discriminators, threshold
detectors and receiver front-ends, phase shifters, digital control, fixed attenuators, power dividers.
Radar Technology, Inc |
Log, linear amplifiers, FM discriminators, IF limiters.
Radiall | radiall.com
| Stratford, CT
attenuators, couplers, DC blocks, detectors, fiber optic components, phase shifters, surge protectors, terminations,
coaxial adapters, connectors, switches.
Microwave Solutions Ltd | smslimited.co.uk
01234 756034 | UK
Manufactures a wide range of custom control devices based
on Silicon PIN diode and GaAs MMIC technology, develops custom circuitry to specifications repairs 3rd-party
components, offers PIN and GaAs FET switches, attenuators, amplifiers, oscillators, limiters, phase shifters,
switched filter banks, & multi function assemblies.