High-power coaxial attenuators are energy-dissipative radiofrequency/microwave components containing resistive materials. In addition to the commonly used resistive fixed attenuators, there are also electrically controlled rapid-adjustable attenuators. Attenuators are widely used in various applications that require power level adjustments.
Section 1: Attenuator Technical Specifications
The technical specifications of an attenuator include its operating frequency band, attenuation level, power capacity, and return loss.
1. Working Frequency Range.
The working frequency band of an attenuator refers to the frequency range within which the attenuator must be used to achieve the specified values. Since RF/microwave structures are frequency-dependent, components from different frequency bands have different structures and are not interchangeable. Modern coaxial attenuators have a relatively wide working frequency band, which requires attention during design or use.
2. Attenuation amount.
Regardless of the mechanism and specific structure of power attenuation, it can always be described using a two-port network that the power at the signal input end of the attenuator is P1, and the power at the output end is P2. The power attenuation of the attenuator is A (dB). If P1 and P2 are expressed in decibels milliwatts (dBm), the relationship between the two end powers is P2 (dBm) = P1 (dBm) - A (dB).
Power Capacity.
An attenuator is an energy-consuming component that converts power into heat upon consumption. As you can imagine, once the material structure is determined, the power capacity of the attenuator is also set. If the power the attenuator is subjected to exceeds this limit, it will be destroyed. It is crucial to clearly define the power capacity during both design and use.
4. Call Back Loss
Return loss refers to the standing wave ratio of an attenuator, which requires the input and output standing wave ratios of the attenuator to be as small as possible. The attenuator we hope for is a power consumption component that should not affect either end of the circuit, meaning it should be matched with both ends of the circuit. This factor should be considered when designing the attenuator.
Shenzhen Huaxin Telecommunication Technology Co., Ltd. offers a variety of power attenuator series. The coaxial fixed attenuators can quantitatively absorb energy in transmission lines, expand the power range, control power levels, and can be paired with low-power meters, comprehensive test sets, or spectrum analyzers for precise measurement of the power or spectrum of various radio frequency microwave transmitters.
We offer coaxial fixed attenuators with average power ratings from 1W to 500W and frequency ranges from DC to 6GHz, featuring wide operating bandwidth, low standing wave ratio, flat attenuation, pulse resistance, and strong burnout resistance.
◇ DC-6GHz, 1W-500W
Depreciation flat, high precision
High reliability, repeatable
Pulse-resistant and highly flame-retardant
