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  • What is Beamforming?

    09/27/2018

    In array antennas, beamforming, also known as spatial filtering, is a signal processing technique used to transmit or receive radio or sound waves in a directional signal. Beamforming applications are found in radar and sonar systems, wireless communications, and in acoustics and biomedicine equipment. Beamforming and beam scanning are generally accomplished by phasing the feed ..

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    Waveguide Frequencies and Geometries

    09/20/2018

    Loss, whether due to radiation leakage or conduction resonance, is a common problem in RF microwave transmission lines, especially when high-powered frequency transmissions are involved. The solution? Waveguides. Waveguide Basics A waveguide is an electromagnetic feed line used for high frequency microwave signals in high-power transmitters and receivers and is used in radar equipment, in ..

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    An Array of Antenna Arrays

    09/13/2018

    An antenna array, or phased array, is a set of two or more antennas whose signals are combined in order to improve performance over that of a single antenna. An antenna array is used to increase overall gain, provide diversity reception, cancel out interference, maneuver the array in a particular direction, gage the direction of ..

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    Types of Antennas at the RF and Microwave Frequency

    09/06/2018

    Monopole The monopole is a resonant antenna and the length of the antenna is determined by the wavelength of the radio waves being received and transmitted. A monopole antenna is usually made of a single conductor mounted over the ground with one side of the feedline from the receiver or transmitter connected to the conductor ..

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    Antenna Performance Criteria Part 2

    08/30/2018

    Antennas are essential components of RF and microwave devices and are used in a wide variety of applications including radio and television broadcasting, radar, cellular transmission, and satellite communications to name a few. Antennas are designed to transmit and receive radio waves determined by the design of the application intended to receive the transmissions and ..

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    Antenna Performance Criteria (Gain and Radiated Efficiency) – Part 1

    08/23/2018

    RF Antennas Antennas are used to channel radio waves for the purpose of communicating information across distances without wires. Antennas are necessary for a radio receiver or transmitter to convey signals between, for example, radio and television broadcast, cellular networks, Wi-Fi devices, radar and GPS, and remote control devices. Antennas transmit and receive radio waves ..

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    Coaxial Cable Loss due to Loss Tangent

    08/16/2018

    Electrical losses in a coaxial cable create heat in the outer and center conductors and are the two main types of coaxial cable loss, skin-effect loss and dielectric loss, respectively. This heat, or loss, can be calculated with the understanding of the following concepts. What is Skin Effect Loss? In coaxial cable, skin effect is ..

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    Coaxial Cable Loss due to Dielectric Conduction

    08/09/2018

    The coaxial cable provides a transmission line with low loss characteristics that can shield from outside signals and provide a durable yet flexible line that can be used in a variety of applications with a wide range of frequencies.  At microwave frequencies, much of the loss in coaxial cable transmission lines is characterized as metal ..

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    Coaxial Cable Power Handling Part 3

    08/02/2018

    In the previous sections of the “Coaxial Cable Power Handling” blog series, a brief overview of coax power handling, and how cable size, cable type, signal frequency, and electron velocity through a cable, influenced the power handling capability of a coaxial cable. In this section, attenuation/loss, environmental factors, VSWR, and cable capacitance, will be touched ..

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    Coaxial Cable Power Handling Part 2

    07/26/2018

    In the previous portion of the “Coaxial Cable Power Handling” blog series, we discussed an overview of coax power handling and how cable power handling impacts cable choice. In this portion of the blog series, we will take a deeper look into how cable size and type, as well as signal frequency and electron velocity ..

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