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In radio, an antenna is the interface between radio waves propagating through space and electric currents moving in metal conductors, used with a transmitter or receiver. In transmission, a radio transmitter supplies an electric current to the antenna's terminals, and the antenna radiates the energy from the current as electromagnetic waves (radio waves). In reception, an antenna intercepts some of the power of an electromagnetic wave in order to produce an electric current at its terminals, that is applied to a receiver to be amplified. Antennas are essential components of all radio equipment, and are used in radio broadcasting, broadcast television, two-way radio, communications receivers, radar, cell phones, satellite communications and other devices.
An antenna is an array of conductors (elements), electrically connected to the receiver or transmitter. During transmission, the oscillating current applied to the antenna by a transmitter creates an oscillating electric field and magnetic field around the antenna elements. These time-varying fields radiate energy away from the antenna into space as a moving transverse electromagnetic field wave. Conversely, during reception, the oscillating electric and magnetic fields of an incoming radio wave exert force on the electrons in the antenna elements, causing them to move back and forth, creating oscillating currents in the antenna.
Antennas can be designed to transmit and receive radio waves in all horizontal directions equally (omnidirectional antennas), or preferentially in a particular direction (directional or high gain antennas). An antenna may include parasitic elements, parabolic reflectors or horns, which serve to direct the radio waves into a beam or other desired radiation pattern.
TekBox TBAS4 is a RF attenuator set that consists of 3dB, 6dB, 10dB and 20dB, 6 GHz/2W N-attenuators..
TekBox TBATT-N-10-10 is an Attenuator with RF Connector from N-male to N-female, Frequency Range DC ..
TekBox TBATT-N-10-20 is an Attenuator with RF Connector from N-male to N-female, Frequency Range DC ..
TekBox TBATT-N-10-3 is an Attenuator with RF Connector from N-male to N-female, Frequency Range DC -..
TekBox TBATT-N-10-30 is an Attenuator with RF Connector from N-male to N-female, Frequency Range DC ..
TekBox TBATT-N-10-6 is an Attenuator with RF Connector from N-male to N-female, Frequency Range DC -..
TekBox TBATT-N-100-10 is an Attenuator with RF Connector from N-male to N-female, Frequency Range DC..
TekBox TBATT-N-100-20 is an Attenuator with RF Connector from N-male to N-female, Frequency Range DC..
TekBox TBATT-N-100-3 is an Attenuator with RF Connector from N-male to N-female, Frequency Range DC ..
TekBox TBATT-N-100-30 is an Attenuator with RF Connector from N-male to N-female, Frequency Range DC..
TekBox TBATT-N-100-6 is an Attenuator with RF Connector from N-male to N-female, Frequency Range DC ..
TekBox TBATT-N-25-10 is an Attenuator with RF Connector from N-male to N-female, Frequency Range DC ..
TekBox TBATT-N-25-20 is an Attenuator with RF Connector from N-male to N-female, Frequency Range DC ..
TekBox TBATT-N-25-3 is an Attenuator with RF Connector from N-male to N-female, Frequency Range DC -..
TekBox TBATT-N-25-30 is an Attenuator with RF Connector from N-male to N-female, Frequency Range DC ..
TekBox TBATT-N-25-6 is an Attenuator with RF Connector from N-male to N-female, Frequency Range DC -..
TekBox TBATT-N-50-10 is an Attenuator with RF Connector from N-male to N-female, Frequency Range DC ..
TekBox TBATT-N-50-20 is an Attenuator with RF Connector from N-male to N-female, Frequency Range DC ..
TekBox TBATT-N-50-3 is an Attenuator with RF Connector from N-male to N-female, Frequency Range DC -..
TekBox TBATT-N-50-30 is an Attenuator with RF Connector from N-male to N-female, Frequency Range DC ..
TekBox TBATT-N-50-6 is an Attenuator with RF Connector from N-male to N-female, Frequency Range DC -..
TekBox TBBCI1-200K280 is a snap-on Bulk Current Injection probe, expanding the Tekbox product range ..
TekBox TBBCI1-800K420 is a snap-on Bulk Current Injection probe, expanding the Tekbox product range ..
TekBox TBBCI1-CAL is a calibration fixture for the TBBCI1 series of Bulk Current Injection probes.Th..
TekBox TBCCP1-2K70 is a coaxial RF current monitoring probe, expanding the Tekbox product range of a..
TekBox TBCCP1-3K100 is a coaxial RF current monitoring probe, expanding the Tekbox product range of ..
TekBox TBCCP1-400K600 is a coaxial RF current monitoring probe, expanding the Tekbox product range o..
TekBox TBCG3-CN comb generator is primarily designed to verify conducted emission test set ups. It i..
TekBox TBCG3-RN2 comb generator is primarily intended for testing radiated emission setups. It is a ..
TekBox TBCG3-RN6 comb generator is primarily intended for testing radiated emission setups. It is a ..
TekBox TBGTC1 open GTEM-cell adds to our existing portfolio of low-cost open TEM-cells for EMC pre-c..
TekBox TBHPF1-150KHZ 150 kHz Highpass Filter for protection of spectrum analyzer or EMI-receiver RF ..