Abstract: This disclosure provides systems, methods, and devices for wireless communications that support enhanced phase calibration operations. In a first aspect, an apparatus for wireless communications includes a processing system. The processing system is configured to cause the wireless communication device to: receive a reference signal at a respective input of a plurality of receive chains; process, by each receive chain, the reference signal to generate a respective output signal; determine, for each receive chain, a phase alignment difference between the respective output signal of the receive chain and a reference output signal of a reference receive chain of the plurality of receive chains; and adjust a phase alignment of a divider of at least one receive chain of the plurality of receive chains based on the determined phase alignment difference for the at least one receive chain. Other aspects and features are also claimed and described.

Abstract: Aspects of the disclosure relate to devices, wireless communication apparatuses, methods, and circuitry for a t-switch with gate shunting. One aspect is an apparatus including a first differential switch having a control input. The apparatus further includes a second differential switch coupled to the first differential switch, the second differential switch a control input. A shunt capacitor is coupled between a first output and a second output of the first differential switch, and a first input and a second input of the second differential switch. A first shunt switch having a control input, an input, and an output has the input and the output coupled to the control input of the first differential switch. A second shunt switch having a control input, an input, and an output, has the input and the output coupled to the control input of the second differential switch.

Abstract: Certain aspects of the present disclosure generally relate to techniques and apparatus for operating a wireless receiver of the apparatus in a high linearity mode. An example method includes operating the apparatus in a first mode with transmission of a plurality of transmit signals. The method also includes attenuating a received signal via an attenuator while operating the apparatus in the first mode. The method further includes amplifying the attenuated signal with an amplifier while operating the apparatus in the first mode. For certain aspects, the method further involves operating the apparatus in a second mode, bypassing the attenuator while operating the apparatus in the second mode, and amplifying the received signal with the amplifier while operating the apparatus in the second mode.

Abstract: An aspect includes a filtering method including operating a first filter to filter a first input signal to generate a first output signal; operating a second filter to filter a second input signal to generate a second output signal; and selectively coupling at least a portion of the second filter with the first filter to filter a third input signal to generate a third output signal. Another aspect includes a filtering method including operating switching devices to configure a filter with a first set of pole(s); filtering a first input signal to generate a first output signal with the filter configured with the first set of pole(s); operating the switching devices to configure the filter with a second set of poles; and filtering a second input signal to generate a second output signal with the filter configured with the second set of poles.

Abstract: Techniques and apparatus are described for reducing power consumption when performing wireless communications by dynamically changing the frequency of a local oscillator signal for a radio frequency (RF) downconversion circuit, based on signal conditions. An example method includes receiving an RF signal and downconverting the RF signal using an oscillating signal with a first frequency at a first time. The method also includes switching to downconverting the RF signal using the oscillating signal with a second frequency, based on a property associated with the RF signal at a second time. The second frequency is a subharmonic of the first frequency.

Abstract: An aspect includes a filtering method including operating a first filter to filter a first input signal to generate a first output signal; operating a second filter to filter a second input signal to generate a second output signal; and merging at least a portion of the second filter with the first filter to filter a third input signal to generate a third output signal. Another aspect includes a filtering method including operating switching devices to configure a filter with a first set of pole(s); filtering a first input signal to generate a first output signal with the filter configured with the first set of pole(s); operating the switching devices to configure the filter with a second set of poles; and filtering a second input signal to generate a second output signal with the filter configured with the second set of poles.

Abstract: A water purification system provides clean water for the consumption by livestock by using a continuously recirculating water loop. A circulating pump moves the water and a particle filter system is fluidically connected in series. An ozone purification system is fluidically connected in parallel to a portion of the continuously recirculating feedback monitored and control water loop. The ozone purification system is disposed downstream of the particle filter system in relation to the flow direction. A feeding station is connected in series with the continuously recirculating water loop disposed downstream of the ozone purification system in relation to the flow direction. An alkaline water apparatus is disposed upstream of the ozone purification unit, connected either before or in parallel to the ozone purification system. A decrystallization process apparatus is connected to continuously solubilize gases of CO2, N2, and inert gases with the flowing water.

Abstract: A water purification system provides clean water for the consumption by livestock by using a continuously recirculating water loop. A circulating pump moves the water within the water loop in a flow direction. A particle filter system is fluidically connected in series and removes dissolved solids or particulates within the water. An ozone purification system and/or with the addition of other antimicrobial or purification agents is fluidically connected in parallel to a portion of the continuously recirculating feedback monitored and control water loop. The ozone purification system is disposed downstream of the particle filter system in relation to the flow direction. A feeding station is connected in series with the continuously recirculating water loop disposed downstream of the ozone purification system in relation to the flow direction. An alkaline water apparatus is disposed upstream of the ozone purification unit, connected either before or in parallel to the ozone purification system.

Abstract: Aspects of the disclosure relate to devices, wireless communication apparatuses, methods, and circuitry for a t-switch with gate shunting. One aspect is an apparatus including a first differential switch having a control input. The apparatus further includes a second differential switch coupled to the first differential switch, the second differential switch a control input. A shunt capacitor is coupled between a first output and a second output of the first differential switch, and a first input and a second input of the second differential switch. A first shunt switch having a control input, an input, and an output has the input and the output coupled to the control input of the first differential switch. A second shunt switch having a control input, an input, and an output, has the input and the output coupled to the control input of the second differential switch.

Abstract: A water purification system provides clean water for the consumption by livestock by using a continuously recirculating water loop. A circulating pump moves the water within the water loop in a flow direction. A particle filter system is fluidically connected in series and removes dissolved solids or particulates within the water. An ozone purification system and/or with the addition of other antimicrobial or purification agents is fluidically connected in parallel to a portion of the continuously recirculating feedback monitored and control water loop. The ozone purification system is disposed downstream of the particle filter system in relation to the flow direction. A feeding station is connected in series with the continuously recirculating water loop disposed downstream of the ozone purification system in relation to the flow direction. An alkaline water apparatus is disposed upstream of the ozone purification unit, connected either before or in parallel to the ozone purification system.

Abstract: An apparatus is disclosed including a wireless transceiver implementing transformer reconfigurability. In an example aspect, the apparatus includes a common single-ended node, a common differential node pair, and a transceiver path set. The transceiver path set includes a first transceiver path and a second transceiver path. The first transceiver path comprises a first single-ended interface and a first differential interface and includes a first transformer. The second transceiver path comprises a second single-ended interface and a second differential interface and includes a second transformer. The apparatus also includes single-ended switch circuitry and differential switch circuitry. The single-ended switch circuitry is coupled between each transceiver path of the transceiver path set and the common single-ended node. The differential switch circuitry is coupled between each transceiver path of the transceiver path set and the common differential node pair.

Abstract: An apparatus is disclosed that includes a wireless transceiver with reconfigurable transformers. In an example aspect, the wireless transceiver includes an amplifier, a set of transformers, and switch circuitry. The amplifier includes an amplifier input and an amplifier output. The set of transformers includes a first transformer and a second transformer. The first transformer includes a first inductor and a second inductor, and the second transformer also includes a first inductor and a second inductor. The switch circuitry is configured to switchably couple the set of transformers to the amplifier input and the amplifier output of the amplifier.

Abstract: An apparatus is disclosed that implements temperature dependency compensation. In an example aspect, the apparatus includes an amplifier, a transformer, a compensation component, and a bias circuit. The amplifier is configured to amplify a wireless signal to produce an amplified wireless signal. The transformer, which includes an inductor, is coupled to the amplifier and is configured to condition the amplified wireless signal. The compensation component is coupled in series with the inductor. The compensation component includes a compensation transistor that is configured to operate in at least one of a positive temperature-dependence range or a negative temperature-dependence range. The bias circuit includes a bias node that is coupled to the compensation transistor. The bias circuit is configured to cause the compensation transistor to operate in the positive temperature-dependence range or the negative temperature-dependence range.