摘要:
The invention relates to a measurement probe, particularly for a non-contacting vector network analysis system, having a housing (10) and at least one coupling structure (12) disposed on the housing (10) and designed for coupling an HF signal from a signal line (16), wherein the arrangement is made such that at least one additional signal probe (14) is disposed on the housing (10) for coupling an electrical signal into the signal line (16).
摘要:
The invention relates to a contactless measuring system having at least one test prod (28) forming part of a coupling structure for the contactless decoupling of a signal running on a signal waveguide (26), wherein the signal waveguide (26) is designed as a conductor of the electric circuit on a circuit board (24) and as part of an electric circuit (52). To this end, at least one contact structure (18; 44) is configured and disposed on the circuit board (24) such that said contact structure (18; 44) is galvanically separated from the signal waveguide (26), forms part of the coupling structure, is displaced completely within the near field of the signal waveguide (26), and has at least one contact point (42), which may be electrically contacted by a contact of the test prod (28).
摘要:
The invention relates to a contactless loop probe for the contactless decoupling of an HF signal for a contactless measuring system, comprising at least one coupling structure (10) and at least one first signal conductor (12) electrically connected to the coupling structure (10) by a first transition (20), said signal conductor being electrically connected by a second transition (22) to an output (14) for electrically connecting to the measuring system, wherein the coupling structure (10) is designed as an HF waveguide comprising at least one signal conductor (24; 30) and at least one reference conductor (26; 32).
摘要:
The invention relates to a loop directional coupler having a first waveguide, particularly a hollow conductor, a planar conductor, or a coaxial conductor, in the form of a half loop antenna having a first antenna branch and a second antenna branch, for the contact-free extraction of an incoming signal a on a second waveguide and a returning signal b on said second waveguide. To this end, the first antenna branch (12) is connected to a first input (20) of a first network (18) and the second antenna branch (14) is connected to a second input (22) of the first network (18), the first network (18) having a first power splitter (56) at the first input (20) and a second power splitter (58) at the second input (22) for dividing the signal present at each antenna branch (12, 14), the first network (18) having a first adder (60) adding the signals of the first and second power splitters (56, 58) to each other, and a first subtractor (62) subtracting the signals of the first and second power splitters (56, 58) from each other.
摘要:
The invention relates to a contactless measuring system having at least one test prod (28) forming part of a coupling structure for the contactless decoupling of a signal running on a signal waveguide (26), wherein the signal waveguide (26) is designed as a conductor of the electric circuit on a circuit board (24) and as part of an electric circuit (52). To this end, at least one contact structure (18; 44) is configured and disposed on the circuit board (24) such that said contact structure (18; 44) is galvanically separated from the signal waveguide (26), forms part of the coupling structure, is displaced completely within the near field of the signal waveguide (26), and has at least one contact point (42), which may be electrically contacted by a contact of the test prod (28).
摘要:
The invention relates to a calibration substrate (100) having at least one calibration standard (12, 14, 16; 102, 104, 108) comprising at least two electrical connection points, each for one measurement gate (38, 42) of a vector network analyzer (40). According to the invention, at least one electrical connection point is formed of at least one calibration standard (12, 14, 16; 102, 104, 108) having a switch (20, 22, 24), wherein the switch (20, 22, 24) comprises a first electrical contact (30) electrically connected to an electrical connection point of the calibration standard (12, 14, 16; 102, 104, 108), a second electrical contact (32) designed for electrically connecting to a measurement gate (38, 42) of the vector network analyzer (40), and a third electrical contact (34), wherein the switch (20, 22, 24) is designed such that an electrical contact is established either between the first and third electrical contact (30, 34) or between the first and second electrical contact (30, 32).
摘要:
The invention relates to a method for calibrating a high frequency measurement system with N measurement ports. For at least one of the ports of the HF measurement device, the HF signal running on the second electrical lead is coupled out to at least three coupling positions positioned at a distance from each other, wherein for each pairwise combination of the at least three coupling positions, using a predefined calibration method with at least one calibration standard as measurement object, the scattering parameter of which is known, at least one scattering parameter for at least one frequency of the HF test signal is determined, wherein the values determined for all pairwise combinations at one frequency of the HF test signal, for the at least one scattering parameter, are compared with the known value for the calibration standard for this at least one scattering parameter, wherein that pairwise combination of coupling positions in which the difference between the value of the determined scattering parameter and that of the known calibration standard is at a minimum, is stored as the preferred first and second coupling position for this frequency, for measurements on unknown measurement objects.
摘要:
The invention relates to a loop directional coupler having a first waveguide, particularly a hollow conductor, a planar conductor, or a coaxial conductor, in the form of a half loop antenna having a first antenna branch and a second antenna branch, for the contact-free extraction of an incoming signal a on a second waveguide and a returning signal b on said second waveguide. To this end, the first antenna branch (12) is connected to a first input (20) of a first network (18) and the second antenna branch (14) is connected to a second input (22) of the first network (18), the first network (18) having a first power splitter (56) at the first input (20) and a second power splitter (58) at the second input (22) for dividing the signal present at each antenna branch (12, 14), the first network (18) having a first adder (60) adding the signals of the first and second power splitters (56, 58) to each other, and a first subtractor (62) subtracting the signals of the first and second power splitters (56, 58) from each other.
摘要:
The invention relates to a method for calibrating a high frequency measurement system with N measurement ports. For at least one of the ports of the HF measurement device, the HF signal running on the second electrical lead is coupled out to at least three coupling positions positioned at a distance from each other, wherein for each pairwise combination of the at least three coupling positions, using a predefined calibration method with at least one calibration standard as measurement object, the scattering parameter of which is known, at least one scattering parameter for at least one frequency of the HF test signal is determined, wherein the values determined for all pairwise combinations at one frequency of the HF test signal, for the at least one scattering parameter, are compared with the known value for the calibration standard for this at least one scattering parameter, wherein that pairwise combination of coupling positions in which the difference between the value of the determined scattering parameter and that of the known calibration standard is at a minimum, is stored as the preferred first and second coupling position for this frequency, for measurements on unknown measurement objects.