In certain aspects, a receiving circuit includes a splitter, a first receiver, a second receiver, and a boost circuit. The splitter is configured to receive an input signal, split the input signal into a first signal and a second signal, output the first signal to the first receiver, and output the second signal to the second receiver. In certain aspects, the voltage swing of the input signal is split between the first signal and the second signal. The boost circuit may be configured to shift a supply voltage of the second receiver to boost a gate-overdrive voltage of a transistor in the second receiver during a transition of the input signal (e.g., transition from low to high). In certain aspects, the boost circuit controls the gate-overdrive voltage boosting based on the first signal and the second signal.

In certain aspects, a receiving circuit includes a splitter, a first receiver, a second receiver, and a boost circuit. The splitter is configured to receive an input signal, split the input signal into a first signal and a second signal, output the first signal to the first receiver, and output the second signal to the second receiver. In certain aspects, the voltage swing of the input signal is split between the first signal and the second signal. The boost circuit may be configured to shift a supply voltage of the second receiver to boost a gate-overdrive voltage of a transistor in the second receiver during a transition of the input signal (e.g., transition from low to high). In certain aspects, the boost circuit controls the gate-overdrive voltage boosting based on the first signal and the second signal.

A 5.sup.th generation (5G) or pre-5G communication system for supporting a higher data transfer rate than 4.sup.th generation (4G) communication systems such as long term evolution (LTE). An apparatus for radiating a signal in a wireless communication system may include: a power amplifier; an antenna; and a combine filter unit configured to transfer an output signal of the power amplifier to the antenna. The combine filter unit may include: a first impedance matching circuit; a second impedance matching circuit; and a plurality of filters coupled in parallel between the first impedance matching circuit and the second impedance matching circuit. Allowable power of each of the plurality of filters may be lower than a maximum and/or predetermined power output of the power amplifier.

In an embodiment, an off-grid phase splitter includes: a first input port and a second input port that are separately connected to a power supply; a first output port and a second output port that provide a second voltage, and the second output port and a third output port provide a third voltage; a first capacitor connected between the first output port and the second output port; a second capacitor connected between the second output port and the third output port; a first switch circuit and a second switch circuit connected in series to form a first node between the first input port and the second input port, where the first switch circuit and the second switch circuit are unidirectionally switched on in opposite directions,; and an inductor connected between the first node and the second output port.

A radio-frequency (RF) splitter is provided. The RF splitter includes a common branch node configured to transfer an RF signal, input from an input port, to at least one of first and second output ports, first and second branch nodes electrically connected between the common branch node and the first and second output ports, first and second series switches configured to control switching operations to electrically connect the common branch node and the first and second branch nodes to each other, first and second inductors electrically connected between the common branch node and the first and second branch nodes, a resistor electrically connected between the first and second branch nodes, and first and second shunt switches configured to control switching operations to electrically connect the first and second branch nodes and the resistor to each other.

A radio-frequency (RF) splitter is provided. The RF splitter includes a common branch node configured to transfer an RF signal, input from an input port, to at least one of first and second output ports, first and second branch nodes electrically connected between the common branch node and the first and second output ports, first and second series switches configured to control switching operations to electrically connect the common branch node and the first and second branch nodes to each other, first and second inductors electrically connected between the common branch node and the first and second branch nodes, a resistor electrically connected between the first and second branch nodes, and first and second shunt switches configured to control switching operations to electrically connect the first and second branch nodes and the resistor to each other.

An antenna and a combined antenna are provided. The antenna comprises: a housing in which a first port and a second port are formed; a feeding network unit, which is disposed inside the housing and comprises a waveguide power divider connecting the first port and the second port, wherein the waveguide power divider is configured for dividing the electromagnetic wave transmitted from the first port to the second port, or merging the electromagnetic wave transmitted from the second port to the first port; a radiating unit, which comprises a radiator disposed on the housing and close to the second port. The antenna in the embodiment of the present disclosure also has the advantages of low loss, being suitable for high-power transmission. In addition, the antenna in the embodiment of the present disclosure is relatively simple in structure, and therefore, is beneficial to reduce the overall volume of the antenna, so as to meet the miniaturization design requirements of the antenna.

A radar system includes a split-block assembly unit comprising a first portion and second portion, where the first portion and the second portion form a seam. The radar system further includes a plurality of ports located on a bottom side of the second portion opposite the seam. Additionally, the radar system includes a plurality of radiating elements located on a top side of the first portion opposite the seam. The plurality of radiating elements is arranged in a plurality of arrays. The plurality of arrays includes a set of multiple-input multiple-output (MIMO) transmission arrays, a set of synthetic aperture radar (SAR) transmission arrays, and at least one reception array. Further, the radar system includes a set of waveguides configured to couple each array to a port.

A radar system includes a split-block assembly unit comprising a first portion and second portion, where the first portion and the second portion form a seam. The radar system further includes a plurality of ports located on a bottom side of the second portion opposite the seam. Additionally, the radar system includes a plurality of radiating elements located on a top side of the first portion opposite the seam. The plurality of radiating elements is arranged in a plurality of arrays. The plurality of arrays includes a set of multiple-input multiple-output (MIMO) transmission arrays, a set of synthetic aperture radar (SAR) transmission arrays, and at least one reception array. Further, the radar system includes a set of waveguides configured to couple each array to a port.

A power divider and an electronic device are provided. The power divider includes: a main port having an input characteristic admittance; a first output port having a first characteristic admittance; a second output port having a second characteristic admittance, where the second and the first characteristic admittances have a predetermined ratio relationship; a first adjustment branch coupled between the main port and the first output port; and a second adjustment branch coupled between the main port and the second output port. The input characteristic admittance is a sum of admittances presented by the first and second adjustment branches at the main port. The admittance presented by the first adjustment branch at the main port and the admittance presented by the second adjustment branch at the main port are adjustable and the input characteristic admittance is enabled to be equal to a sum of the first and the second characteristic admittances.