Abstract: Exemplary embodiments are related to a dynamic gate bias for an electronic switch. A device may include a radio-frequency (RF) switch configured to receive an RF signal. The device may further include a bias generator configured to convey a bias signal based on a power level of the RF signal to the RF switch.

Abstract: An image trap filter disposed between the low noise amplifier and the mixer of a radio frequency receiver that overcomes the adverse effect of process variations on image signal rejection for both a single-band radio frequency receiver and a multi-band radio frequency receiver by setting the image trap filter response at the center of the band of interest at production test. The image signal problem is presented at the input of the radio frequency receiver and the image trap filter is adjusted for the desired frequency response.

Abstract: An image trap filter used in a radio frequency receiver for filtering an image signal from a radio frequency signal. The image trap filter includes an inductor and a capacitor connected in series in a first branch with the first branch connected in parallel with an impedance in a second branch. For low-side injection of the local oscillator signal (i.e., the frequency of the local oscillator signal is lower than the radio frequency signal), the impedance in the second branch is a capacitor and the series-connected inductor and capacitor in the first branch resonate at the frequency of the image signal and present a low impedance at the frequency of the image signal and a somewhat higher inductive impedance at the frequency of the radio frequency signal that resonates with the capacitor in the second branch at the frequency of the radio signal. For high-side injection of the local oscillator signal (i.e.

Abstract: To overcome problems in an image reject mixer in a radio frequency receiver when there is a degradation in image rejection due to process variations, such as variations in the values of components, a reactance feedback path of a first differential amplifier in the intermediate frequency combiner of the image reject mixer is tuned during assembly of the radio frequency receiver. This tuning places the first differential amplifier and a second differential amplifier in the intermediate frequency combiner in phase quadrature when the pole frequency of reactance feedback path is at least ten times lower than the frequency of the intermediate frequency and sets the gain of the two differential amplifiers to be equal when the reactance of the reactance feed back path in the first differential amplifier is equal to the resistance of a resistance feedback path in second differential amplifier.

Abstract: A balun transformer having two series connected transformers with each having a primary loop conductor disposed in a stacked configuration. One portion of each primary loop conductors is in a first layer and these two portions of the two primary loop conductors are connected in series. The second portions of the primary loop conductors are in a second layer that is spaced from the first layer with the secondary loop conductors interlaced with these portions of the primary loop conductors in the second layer.

Abstract: An amplifier in which the gain is changed by changing the reactance in the emitter of a transistor and this change in reactance is compensated for by changing the reactance in a feedback path between the collector and the base of the transistor to maintain the input impedance to the amplifier fixed.