HMC1084LC4TR-R5

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RF switches are nonlinear devices that enable the switch-gate mechanism for manipulating the radio frequency signals. They are widely used in RF circuits due to their low noise and low power consumption. HMC1084LC4TR-R5 is one of the most frequently used RF switches and its application field and working principle are explained here.

Application Field

HMC1084LC4TR-R5 is a low-power and low-noise RF switch with 10GHz cutoff frequency. It is a low insertion loss and high isolation SP4T switch in a surface mount package. The switch is suitable for very wide range of applications, including cellular base stations, cordless phones, satellite systems, test and measurement, automotive and aerospace. The switch integrates filter, power limiter, phase shift network, power amplifier, bypass, switch, multiplexer and mixer functionality. It also supports multiplexing for up to two channels.

Working Principle

The HMC1084LC4TR-R5 utilizes a single control pin to switch between four switch elements. It has an array of four RF switches with two selectable power when the control pin is connected. Each of the two power levels is 4dB lower than the full power level, thus providing a total of six power levels. The switch can be set to one of the two power levels by connecting the control pin to a suitable voltage source. When the switch control pins are appropriately driven, the switch can be operated in either of the two available power range. In addition, the switch is provided with an external bias supply for adjustment of the power level.

The various elements of the circuit are controlled by the gate control inputs which are connected to the control pin. The signal ports are connected to the switches and the signal passes between these ports by the switching action of the gates. The external bias supply is connected to the control pin and it provides the required power for the operation of the switch. The switch also has a built-in power limiter which limits the maximum power level of the switch depending on the external bias supply and the control voltage. The total output power of the switch is equal to the power of the external bias supply and the control voltage.

HMC1084LC4TR-R5 is a highly reliable and low-power RF switch which is capable of handling up to 10GHz signals with low insertion loss and high isolation. In addition, it offers multiplexing capabilities for up to two channels and its low power consumption makes it ideal for a wide range of applications.

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