Dave Thibado

Recent Posts

Balancing Performance with Compact Quadrature Hybrid Couplers

Posted by Dave Thibado on Feb 17, 2021 10:42:00 AM

Quadrature hybrid couplers are basic building blocks for many RF and microwave systems. For these couplers, the input splits into two output signals, of equal magnitude, with a 90 degree phase difference. Quadrature hybrid couplers provide improved input match for unbalanced loads. Energy splits evenly between outputs, and some energy is reflected back due to mismatch. For example, in Figure 1, there is a 90 degree phase difference between the two outputs, so the energy reflected at point A is 180 degree out of phase and cancels at the input port. At point B, the energy is in phase and sums at the isolated port, which is terminated.

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Topics: RF and Microwave

You Have a Filtering Job to Do – We Have the Right Candidate for You

Posted by Dave Thibado on Nov 18, 2020 8:00:00 AM

When designing an RF or microwave application, you will always need some level of filtering to attenuate or remove unwanted signals from the desired channel. Since the end goal of what a filter must accomplish is quite broad, it may seem daunting to know what qualities to look for in a filter to get there.

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Topics: 5G, RF and Microwave, Filtering

Achieve Excellent Performance in a Small Footprint with Low-Loss, High Q S and C Band Filters

Posted by Dave Thibado on Oct 28, 2020 8:00:00 AM

At any given time, there are a multitude of signals at a variety of frequencies streaming all around us. This means most RF devices require some level of filtering to attenuate or remove unwanted signals from the desired channel. Without a filter, receiver components can become saturated and unwanted signals can combine with desired signals to corrupt information.

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Topics: RF and Microwave

Insights Into Precision Passive Devices

Knowles Precision Devices is a premier global source for Capacitors, RF Filters, EMI Filters, Resonators, non-magnetic components and advanced dielectric materials. An umbrella for the brands of Compex, DLI, Johanson MFG, Novacap, Syfer and Voltronics, Knowles Precision Devices serves a variety of markets including military, aerospace/avionics, medical equipment, implantable devices, EMI and connector filtering, oil exploration, instrumentation, industrial electronics, automotive, telecoms and data networks.

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Recent Posts