![]() ![]() ![]() ADI’s limiting amplifiers are ideal for many of these applications due to industry-leading package size, electrical/RF performance, and ease of integration into higher level assemblies. These systems must operate over a wide thermal range and require a flat frequency response with low harmonic content under all operating conditions. Applications include IFM and direction finding front ends, DRFM, and jammer systems. Further, multichannel system designs and proximity to the receiver antenna generate requirements for low power and small package size. These receivers are necessary to protect sensitive components from RF overdrive or to remove AM modulation from incoming signals. Many modern EW systems require low noise receivers capable of withstanding wide input power variations over a multioctave bandwidth. The test results of the performance achieved are presented below. By leveraging ADI’s unique MMIC advantages and subsystem design capabilities, we are able to offer superior solutions to address customer’s need for advanced applications. This article demonstrates a 2 GHz to 18 GHz design that achieves greater than 40 dB limiting dynamic range with less than 2 dB output power variation and 4 dB noise figure over –40☌ to +85☌ using ADI devices. Improperly cascading and saturating a chain of amplifiers can lead to unreliable and unpredictable performance. Maintaining acceptable and reliable performance over multioctave bands requires careful design of the amplifier chain. These EW systems often require high gain with a flat response and must operate over harsh thermal environments. Wideband, high dynamic range microwave limiting amplifiers are critical components in electronic warfare (EW) systems where stable/compressed output power is required over a wide input power range. Wideband High Dynamic Range Limiting Amplifier ![]()
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