摘要:
The present disclosure provides for a phase shifter having at least one phase shift section. The phase shift section includes an input port for receiving an incoming radio frequency signal, an output port for transmitting an outgoing radio frequency signal, an input junction coupled to the input port, an output junction coupled to the output port, and a plurality of transmission lines. The input junction includes a first plurality of cantilever type switches, and the output junction includes a second plurality of cantilever type switches. Each transmission line connects one of the first plurality of cantilever type switches to a corresponding one of the second plurality of cantilever type switches. The first plurality of cantilever type switches, the second plurality of cantilever type switches, and the plurality of transmission lines are formed in a coplanar waveguide.
摘要:
The invention relates to a coupling device which is used to produce at least three different antenna radiation diagrams using only two antennas. As a result, a device for distributing (1) the antenna signal power to two antenna paths is provided, in addition to a three-step switch (3) which is provided in one of the antenna paths, and which can be controlled in three transmission states by supplied control signals.
摘要:
A phase shift circuit and a phase shifter are achieved which are small in size and wide in bandwidth. The phase shift circuit includes a capacitor, and a series circuit composed of a switching element which exhibits capacitivity when it is in an off-state and an inductor connected in series with this switching element, the series circuit being connected in parallel with the capacitor. The capacitor and one terminal of the series circuit are connected with a high frequency signal input/output terminal, and the other terminal thereof is connected with ground.
摘要:
The invention relates to a wideband 180° microwave phase switch structure, consisting of microwave or millimetric wave elements such as waveguides, microstrips, striplines or coaxial cables, which are connected in such a way that they can produce a structure with a 180° phase difference between the two possible low-loss outputs in the band width used, with a high band width, flat phase and balanced amplitude. The structure disclosed in the invention is based on interconnection of two hybrid rings ("magic T") that are embodied according to a given configuration of the different ports of the two rings, thereby providing a unique structure resulting in a practical application device with a 180° phase difference and given properties relative to the length of the waves and the impedances relative to the resulting lines.
摘要:
A phase shifter includes a fixed-length transmission line (103) with an electrical length of 180° having one end connected to an end of an input/output transmission line (101), a first variable-length transmission line (104) connected to the other end of the fixed-length transmission line, a second variable-length transmission line (105) connected to an end of an input/output transmission line (102), switches (112, 122) for switching electrical lengths of the variable-length transmission lines (104, 105), switch means (106), including at least two switches (131, 132), for switchingly connecting the end of the input/output transmission line (102) to one or the other end of the fixed-length transmission line, so that an RF signal has a phase shift amount of 0° or 180°, and a control means (107) for controlling the switches (112, 122, 131, 132). The phase shifter can thus downsized.
摘要:
A phase shifter (10) includes a comb-line (13) formed by first and second transmission lines (11 and 12) electromagnetically coupled with each other and a plurality of variable-capacitance diodes (D11, D12) connected to the first and second transmission lines (11 and 12) forming the comb-line (13). In the phase shifter (10), one end of the first transmission line (11) is connected to an input terminal (P i ), one end of the second transmission line (12) is connected to an output terminal (P o ), and the variable-capacitance diodes (D11, D12) are connected between the other ends of the first and second transmission lines (11 and 12) and the corresponding grounds.
摘要:
There is provided a small size phase shifter which can shift a phase by 180 degrees wherein the accuracy of preset phase is less dependent on frequency. The phase shifter comprises first to fourth switches provided between a first line pair and a second line pair. By turning the first and second switches ON and the third and fourth switches OFF, a signal inputted to the first line pair is outputted from the second line pair in phase. By turning the first and second switches OFF and the third and fourth switches ON, a signal inputted to the first line pair is outputted from the second line pair out of phase. A small-size phase shifter which has the accuracy of preset phase less dependent on frequency can then be obtained.
摘要:
A phase shifting circuit is disclosed comprising a plurality of bidirectional transmission line segments (31, 35, 37, 39) serially connected to form a ring. Input and output terminals (13, 15) are connected to opposite ends of the first of the transmission line segments (31) to form a first signal path through the ring A second ring signal path, through the remainder of the serially connected transmission line segments (35, 37, 39), is selectively enabled to provide a predetermined phase shift at the output of the ring. By removing series semiconductor devices, the circuit permits higher power signals to be phase shifted over wide frequency ranges.