EHF-FD1750

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Balun is a device that transduces between signals of opposite characteristics, chiefly applied to transform a signal found in a balanced line (such as a twisted pair) to an unbalanced line (such as a coax cable). As such, balun devices find wide application in the interconnection of the different types of telecommunication circuits that employ different signal formats.

The EHF-FD1750 is a balun frequency doubler operating in the K-band (18-30 GHz) frequencies. It takes a fundamental frequency input of 15-20 GHz (with 10 dBm OIP3) and outputs a doubled frequency of 30-40 GHz (with 10 dBm OIP3) with a conversion gain of 10 dB. The noise figure of the device is only 6 dB. Its peak isolation is 35 dB while its PWL is lower than -14 dBc.

The EHF-FD1750’s compact size of only length 0.48 inch, width 0.25 inch, and height 0.08 inch while its weight of only 0.004 ounces makes it ideal for use in many applications where physical space is a limitation. This device is also RoHS compliant and hermetically sealed for sub-systems used in high reliability and high-precision applications, such as radar system scanning, satellite ground systems, and in millimetre wave systems.

Due to its small size, the EHF-FD1750 balun is capable of enduring severe environmental conditions. It is capable of withstanding extended operating temperatures ranging from -40°C to +90°C, high vibration and shock environments, and on-site installation and operation in a dust filled location. In addition, the device is radiation resistant and virtually insensitive to electrostatic discharge occurrences.

The EHF-FD1750 balun is a double balanced diode mixer (DDCM) configured as a frequency doubler. The device is fed from a single port in push-pull matter and generates an output clock in quadrature (90 degree phase shift). The key advantages are the fact that this mixer uses a series of low noise varactor diodes in the balanced network, extended operating temperature range, and low insertion loss.

The operation of the EHF-FD1750 balun is simple and straightforward. It receives the balanced signal at the fundamental frequency between 15-20 GHz and drives the output to double the frequency range of 30-40GHz. The circuit is usually used to obtain a certain shift phase between the two frequencies, with a conversion gain of 10 dB or negligible insertion loss. The peak isolation of the device makes it suitable for use in various applications where interference suppression is a must.

In summary, balun devices such as the EHF-FD1750 are becoming increasingly popular as they provide a compact, reliable and cost effective solution for different types of telecommunication circuits that require a balanced to unbalanced conversion. Due to its small size, the device is ideal for use in various high reliability and high precision applications, such as radar system scanning, satellite ground station and even in millimeter wave systems. Its peak isolation, extended operating temperature range, low noise figure and low insertion loss make the EHF-FD1750 balun a perfect choice for those applications.

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