Abstract: A reconstituted wafer includes a plurality of apertures defined in a first substrate. A module is positioned in each aperture and coupled to circuit traces on the first substrate by operation of beam leads extending from the module. A second substrate is positioned over the first substrate and each module is enclosed in a space defined by the respective aperture and the second substrate. The module includes a lid and at least one mode suppression circuit disposed in the lid. The modules may include an invariant die where different technologies are stacked together.

Abstract: A reconstituted wafer includes a plurality of apertures defined in a first substrate. A module is positioned in each aperture and coupled to circuit traces on the first substrate by operation of beam leads extending from the module. A second substrate is positioned over the first substrate and each module is enclosed in a space defined by the respective aperture and the second substrate. The module includes a lid and at least one mode suppression circuit disposed in the lid. The modules may include an invariant die where different technologies are stacked together.

Abstract: A reconstituted wafer includes a plurality of apertures defined in a first substrate. A module is positioned in each aperture and coupled to circuit traces on the first substrate by operation of beam leads extending from the module. A second substrate is positioned over the first substrate and each module is hermetically sealed in a space defined by the respective aperture and the second substrate. One or more vias are provided to access I/O signals at a surface of the first or second substrates. The modules may include an invariant die where different technologies are stacked together.

Abstract: Provided herein are apparatus and methods for transconductance amplifiers, such as split cascode low-noise transconductance amplifiers (LNTAs). In an embodiment, an LNTA includes split current paths each coupled to a different mixer by way of a different alternating current (AC) coupling capacitor. The split current paths of the LNTA can be enabled during different modes of operation, such as when the input to the LNTA is within different frequency bands.

Abstract: Provided herein are apparatus and methods for transconductance amplifiers, such as split cascode low-noise transconductance amplifiers (LNTAs). In an embodiment, an LNTA includes split current paths each coupled to a different mixer by way of a different alternating current (AC) coupling capacitor. The split current paths of the LNTA can be enabled during different modes of operation, such as when the input to the LNTA is within different frequency bands.

Abstract: An LIF receiver includes a receiver path comprising: a mixer for mixing a received RF signal with a local oscillator signal to provide an IF signal at a lower frequency than the received RF signal, a bandpass filter for filtering the IF signal, a PGA for amplifying the filtered IF signal, an ADC for converting the amplified filtered IF signal to a digital signal, a converter for converting the digital signal to a baseband digital signal, and an AGC for setting a gain of the PGA in response to a magnitude of the received RF signal. A programmable DC signal source injects a programmed DC offset signal into the amplified filtered IF signal converted by the ADC, and a signal sensor, operatively connected to the receiver path after the PGA, determines a polarity of PGA signal output for a programmed DC offset signal. A controller determines a programmed DC offset signal minimizing a magnitude of the baseband signal in the absence of a received RF signal for at least one gain setting of the PGA.

Abstract: A radio frequency (RF) device includes a transmission line arranged on a substrate, the transmission line operative to propagate an RF signal having a wavelength (?), and a first isolation portion arranged on the substrate proximate to the transmission line, the first isolation portion including an arrangement of stubs, where each stub of the arrangement of stubs has a length (y) where y=¼?, the first isolation portion operative to substantially prevent electromagnetic interference caused by the propagation of the RF signal in the transmission line from passing through the first isolation portion.

Abstract: An LIF receiver includes a receiver path comprising: a mixer for mixing a received RF signal with a local oscillator signal to provide an IF signal at a lower frequency than the received RF signal, a bandpass filter for filtering the IF signal, a PGA for amplifying the filtered IF signal, an ADC for converting the amplified filtered IF signal to a digital signal, a converter for converting the digital signal to a baseband digital signal, and an AGC for setting a gain of the PGA in response to a magnitude of the received RF signal. A programmable DC signal source injects a programmed DC offset signal into the amplified filtered IF signal converted by the ADC, and a signal sensor, operatively connected to the receiver path after the PGA, determines a polarity of PGA signal output for a programmed DC offset signal. A controller determines a programmed DC offset signal minimizing a magnitude of the baseband signal in the absence of a received RF signal for at least one gain setting of the PGA.

Abstract: A radio frequency (RF) device includes a transmission line arranged on a substrate, the transmission line operative to propagate an RF signal having a wavelength (?), and a first isolation portion arranged on the substrate proximate to the transmission line, the first isolation portion including an arrangement of stubs, where each stub of the arrangement of stubs has a length (y) where y=¼?, the first isolation portion operative to substantially prevent electromagnetic interference caused by the propagation of the RF signal in the transmission line from passing through the first isolation portion.