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2. Distributed-element circuit - Wikipedia

   en.wikipedia.org/wiki/Distributed-element_circuit

   A surge in distributed-element filter development followed, filters being an essential component of radars. The signal loss in coaxial components led to the first widespread use of waveguide, extending the filter technology from the coaxial domain into the waveguide domain. [61]

3. Balun - Wikipedia

   en.wikipedia.org/wiki/Balun

   Isolation transformer. In classical transformers, there are two electrically separate windings of wire coils around the transformer's core. The advantage of transformer-type over other types of balun is that the electrically separate windings for input and output allow these baluns to connect circuits whose ground-level voltages are subject to ground loops or are otherwise electrically ...

4. Low-noise block downconverter - Wikipedia

   en.wikipedia.org/wiki/Low-noise_block_downconverter

   Also called a low-noise block, [1] [2] low-noise converter (LNC), or even low-noise downconverter (LND), [3] the device is sometimes inaccurately called a low-noise amplifier (LNA). [ 4 ] The LNB is a combination of low-noise amplifier, frequency mixer , local oscillator and intermediate frequency (IF) amplifier.

5. BNC connector - Wikipedia

   en.wikipedia.org/wiki/BNC_connector

   The BNC connector is a miniature quick connect/disconnect radio frequency connector used for coaxial cable.It is designed to maintain the same characteristic impedance of the cable, with 50 ohm and 75 ohm types being made.

6. EIA RF Connectors - Wikipedia

   en.wikipedia.org/wiki/EIA_RF_Connectors

   The flange design, inner and outer conductor dimensions are standardized, by EIA, in the RS-225, 50 Ω (ohm), and RS-259, 75 Ω, standards.They are commonly referred to by the inner diameter of the outer conductor in fractional inches.

7. SMA connector - Wikipedia

   en.wikipedia.org/wiki/SMA_connector

   SMA connectors must not be confused with the standard household 75-ohm type F coax connector (diameters: male 7 ⁄ 16 inch (11 mm) circular or hex; female 3 ⁄ 8 inch (9.5 mm) external threads), as there is only about a 2 mm difference overall in the specifications. Type F cannot be mated with SMA connectors without the use of an adapter.