摘要:
A pulse generator is disclosed. The pulse generator can include a pulsed switch, such as a diode. The pulsed switched can be connected between an input source, such as an oscillator and a frequency multiplier.
摘要:
A manner of using a plurality of transformers having cylindrical cores such that operation of the transformers at high frequencies allows the cores of the transformers to be disposed parallel to each other and in relatively close proximity without substantial interference.
摘要:
A frequency multiplier is shown to include either a frequency doubler or a frequency tripler coupled to an amplifier with a temperature compensation circuit and a feed forward gain control loop. With such an arrangement, a frequency multiplier is provided wherein variations of an output signal of the frequency multiplier are minimized due to changing characteristics of the frequency multiplier caused by ambient temperature variation or from a varying input signal level.
摘要:
A designated burst signal specified in a designated frequency is detected from an all-inclusive signal specified in a plurality of frequencies, by multiplying a frequency of the all-inclusive signal by a multiplying factor so as to produce a multiplied output signal, performing a phase-lock loop operation between the multiplied output signal and an oscillated signal produced for performing the phase-lock loop operation and specified in a multiplied frequency of the designated frequency by the multiplying factor, so as to produce a phase-lock output signal and comparing the multiplied output signal and the phase-lock output signal for producing a detected output signal representing whether the designated burst signal is in the all-inclusive signal.
摘要:
A small-sized thin frequency sensor developed for prevention of theft of an article. The frequency sensor comprises a receiving antenna portion to receive high frequency waves, and a transmitting antenna portion which is shaped into a closed loop with a diode incorporated therein and is disposed linearly to the receiving antenna portion to form an oblong rectangular contour as a whole.
摘要:
A frequency multiplier uses a pair of Schottky diodes to rectify an applied signal, with the rectified waveforms provided by both diodes being combined to produce an output signal having a predominant frequency of twice the applied frequency. In order to prevent distortion occuring at low signal levels, a d.c. bias is applied to the diodes so as to bias them at their threshold values. The effect of temperature variations on the diodes is minimized by using a further diode to determine the effective value of the bias voltage.
摘要:
A broadband high frequency signal generator is disclosed having a low and a high frequency swept signal source connected to a YIG tuned frequency multiplier. One end of an output coupling loop for the YIG is connected to ground through a PIN diode, and the low frequency signal source is connected to the junction of the output coupling loop and the PIN diode. When the PIN diode is caused to conduct, signals from the high frequency source are passed through the YIG tuned multiplier to an output in the conventional manner. When the PIN diode is not conducting, signals from the low frequency source are passed to the output through the output coupling loop.
摘要:
A frequency doubler circuit including a differential amplifier supplied with a signal of a predetermined frequency, for example, a pilot signal of 19KHz contained in an FM stereophonic signal, a pair of rectifier circuits coupled to outputs of the differential amplifier to rectify the signal of the predetermined frequency and a combining circuit to combine the rectified signals, whereby a signal of a frequency twice that of the signal supplied to the differential amplifier is derived at the output terminal of the combining circuit.
摘要:
A pair of varactors connected antiparallel across a source of fundamental frequency power to provide third harmonic power with essentially suppressed even harmonics minimizes the fifth harmonic with varactors having gamma about 0.56.
摘要:
A microwave oscillator including a transistor connected as an oscillator and coupled to a resonator tuned to a first frequency, line means are coupled to the resonator, a step recovery diode is connected in shunt along the line means and a filter arrangement is provided which is tuned to a harmonic of the above-mentioned first frequency and is coupled to the line means to derive a signal of the harmonic from the step recovery diode.