Abstract:
The present invention provides an over the air, OTA, power sensor (1, 20, 50) for measuring power of a wireless signal (2, 21) with at least two different polarizations, the OTA power sensor (1, 20, 50) comprising a first power sensor (3, 4, 22, 23, 51, 52) for every polarization, every power sensor comprising a signal detector (5, 6, 25, 26, 27) for detecting the wireless signal (2, 21), wherein the signal detectors (5, 6, 25, 26, 27) are single polarized and wherein the polarization planes (7, 8, 28-30) of the signal detectors (5, 6, 25, 26, 27) are arranged at an angle of more than zero degree to each other and wherein the main radiation vectors (9, 10, 31-33) of the signal detectors (5, 6, 25, 26, 27) are parallel to each other, and the first power sensors (3, 4, 22, 23, 51, 52) each comprising a power measurement device (11, 12, 43-45), which is configured to measure the power of the detected wireless signal (2, 21) and output a respective measurement signal (13, 14, 46-48, 55-58). Further, the present patent application provides a respective method.
Abstract:
A power detector comprising a first and a second bipolar junction/FET transistor. The first transistor is arranged as a common base/gate transistor with its base/gate being biased by a bias voltage and the second transistor is arranged as a common emitter/source transistor with its emitter/source being grounded. The power detector also comprises a diode or current source connected to ground from the emitter/source of the first transistor, in which power detector an input port is connected to the emitter of the first transistor and to the base/gate of the second transistor, and an output port is connected to the collectors/drains of the first and second transistor, said collectors/drains also being connected to a DC supply via a first resistor.
Abstract:
An on-chip millimeter wave power detection circuit comprises a high resistive probe for voltage sensing of millimeter wave signals, the probe comprises a metal line perpendicularly connected to a transmission line, at one end, and further connected to a power root mean square (RMS) detector at the other end; and the RMS detector for measuring a RMS voltage value of the sensed millimeter wave signals, wherein the RMS detector is characterized by a known impedance.
Abstract:
An amplifier circuit comprises a detection power input circuit for receiving an RF signal, and a bias circuit that includes an output for generating a bias signal in response to a reference control voltage. The power detector further comprises a detection circuit for generating a power control voltage having a voltage characteristic that offsets temperature characteristics of the received RF signal. The amplifier circuit further comprises a power amplifier coupled to the bias circuit. The power amplifier includes a driver stage providing the RF signal. The detection circuit compensates temperature variation of the inputted detection voltage of the received RF signal.
Abstract:
A wave detector circuit includes: a first transistor having its base and collector connected together, the first transistor receiving an AC signal and a reference voltage at its base and collector; a second transistor having its base connected to the base of the first transistor through a resistor, the second transistor outputting a detected voltage at its collector; and a diode-connected temperature compensation transistor connected between ground potential and the base and the collector of the first transistor.
Abstract:
A resonant tunneling diode or diode array oscillator (10) including a resonant diode (11) is coupled to a millimeter-wave source (14) and a quench generator (16) for periodically quenching the oscillations so that the average oscillation time of the oscillator is proportional to signal strength of the source (14). The signal source can be from an antenna such as a dipole or tapered slot line antenna.
Abstract:
A module incorporates power sensors coupled to a through line through directional couplers, all of which are mounted on a board within a housing, for measuring transmitted and received power of a system under test.
Abstract:
Power measurement and control in transmission systems are affected by changes in load conditions. A method and system are provided for detecting and controlling power levels independent of such load conditions.
Abstract:
A wave detector circuit includes: a first transistor having its base and collector connected together, the first transistor receiving an AC signal and a reference voltage at its base and collector; a second transistor having its base connected to the base of the first transistor through a resistance, the second transistor outputting a detected voltage at its collector; and a diode-connected temperature compensation transistor connected between ground potential and the base and the collector of the first transistor.
Abstract:
Power measurement and control in transmission systems are affected by changes in load conditions. A method and system are provided for detecting and controlling power levels independent of such load conditions.