Specified value of the RLB directivity, the measurement uncertaintyīecomes larger. As the reflected signal becomes smaller and approaches the How well the RLB isolates 2 opposite traveling (foreward and reflected) A returnĭB would correspond to an SWR of 1.91:1 with 10% of your power Match with about 1% of the power to the antenna reflected. If this were an antenna, it would be considered an Signal is now measured to be -42 dBm, this would be a return loss of 20Īmount of reflected power is 20 dB less than the worst case. The amount of power at the RLB's output port would then change. If the open or short were replaced with your load at the The RLB input port, let's say we measure the RF power at the RLB outputīe -22 dBm. Open or short connected to the DUT port and an RF signal source To SWR ( high SWR means high reflected power or poor match) For Signal of your DUT compared to the worst case reflected signal. Return loss is measured from the worse case (short or This will cause maximum reflected power and, therefore, maximum signal The extreme cases are for the DUT to be a short or an open Non-50-Ohm load is at the DUT port, there will be an RF signal at the Will have no output signal at its output port (infinite return loss). A perfect 50-Ohm DUT will have no reflected power so a Your DUT impedance is to 50 ohms, the lesser the signal will be To go to a measuring device such as a spectrum analyzer, power meter orĭevice used to measure this signal. Reflected from a load or device under test (DUT) when power is sourcedĭevice through the RLB. Simple terms, the return loss bridge is a device used to measure RF Their contact information will be posted here as soon AnotherĬompany will soon continue the manufacturing of this bridge with someĭesign changes. We will continue support should it be necessary. Margin has been slim and for that reason, this product will soon beĭiscontinued. Manufactured this bridge to provide a lower cost alternative that hadĬompairable or superior performance to more expensive units.

The SW2012N continues to be anĮxcellent working rugged and dependable product. Please note: This product is being discontinued. Meter/spectrum analyzer to make accurate measurements.

Use your existing rf generator and receiver/power The new design will withstand 4 watts of accidental power input to theĭUT port. Has high quality type N connectors for all ports and a newĬonfiguration with the input and output ports conveniently on one side. Range and minimum 35 db directivity (40 dB typical). Bridges are individually tested and include a performance The SW2012N isĠ.5 - 1500 MHz return loss bridge (RLB) for your antenna/feed line This will provide the same accuracy as antennaĪnalyzers costing thousands more. Service monitor or signal generator / signal receiver into an accurateĪntenna analyzer.

Return loss bridge rlb 251