A 17.8–34.8 GHz (64.6%) Locking Range Current-Reuse Injection-Locked Frequency Multiplier with Dual Injection Technique

Oh, Kwang‐Il; Ko, Goo-Han; Kim, Gwang-Sub; Kim, Jeong‐Geun; Baek, Dong‐Hyun

doi:10.3390/electronics10091122

Cited by 1 publication

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References 30 publications

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“…Currently, many methods used in frequency multiplication have been reported: the frequency doubler using the Injection-Locked frequency multiplier technique, which is used to generate a differential signal and increase the power of the second order harmonic component filtered with an LC circuit [27]; the frequency doubler using Schottky diodes where series connected diodes polarized in the output waveguide are used [28]; the frequency tripler using a pair of antiparallel GaAs Schottky diodes where the pair of diodes are used as nonlinear devices to generate harmonic components for the input signal in the Q-band [29]; the frequency tripler by the triple push technique using heterojunction bipolar transistors (HBT) technology, which consist of three identical unit-cell multipliers which are individually pumped by the W-band input signals with 120 • phase difference so that the third harmonic components are combined in phase at the output [30]; the frequency doubler and tripler using the Class E amplifier with shunt linear and nonlinear capacitances where it is necessary to select an appropriate value of the shunt capacitor to achieve the frequency multiplication [31]; and finally using the well-known technique called "Variable Frequency Multiplier" (VFX) in which the duty cycle and switching frequency of an inverter or rectifier are modified as the input or output voltages change to create different operating modes, allowing a tripling or quadrupling of the operating frequency [32,33].…”

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confidence: 99%

Series RLC Resonant Circuit Used as Frequency Multiplier

et al. 2022

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Currently, the design of resonant power converters has only been developed while operating in the steady state, while the design operating in the transient stage has not been considered nor reported. This paper is interested in testing the performance of the resonant circuits operating in the transient stage and finding applications where benefits can be obtained from this form of operation. One application in which it is possible to obtain benefits from designing resonant circuits in the transient state is in the area of frequency multiplication. Usually, to achieve frequency multiplication, it is necessary to resort to complex methods and special devices that increase the complexity of the design and the total cost of the circuit. This paper evaluates the performance of a series RLC resonant circuit operating in the transient stage and with an underdamped response acting as a frequency multiplier, where the oscillation frequency of the current in the resonant tank is “n” number of times the switching frequency of the square voltage source at the input with a duty cycle of D = 50%. To validate the analysis, a circuit was designed to deliver an output power of 30 watts to a resistive load, where the switching frequency of the square voltage source at the input was 500 kHz. Since a multiplier value “n” equal to fifteen was chosen, the current in the resonant tank reached an oscillation frequency of 7.5 MHz. The design methodology was validated by simulations in SPICE, complying with the established design parameters.

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