A microwave rf envelope generator or pulse shaper has a main waveguide with two opposing branches connected in shunt to the main waveguide and are terminated with variable positionable shorts. The characteristic impedance of the shunted combination of the two branches equal one half the ...
or a comb of frequencies within the 5 kHz to 1 GHz range, with step size being selected by the user. The noise generator enables observation of details over the full spectral range, while the comb generator allows for the reference signal output and noise floor to be viewed simultaneously. ...
1. The ICRH system on SST-1 consists of 1.5 MW RF generator of 20–40 MHz and 91.2 MHz frequency, 100 m long 9′ coaxial transmission line, a 3 dB hybrid coupler, which divides power equally into two transmission lines, online matching network (OMN) used for online impedance matching, ...
The combination of USG signal generator and GRF-1300A Mixer function can produce 2.4GHz AM and FM modulation signals. GRF-1300A Bandpass Filter can purify the output signals by filtering out harmonic and spurious produced by Mixer output signals. ...
802.11 a/b/g WLAN Receiver and PER Testing With SeaSolve 's WiLANTA LVSG11bg This application note will show how The combination of SeaSolve's WiLANTA LVSG11abg, WLAN Vector Signal Generation software, and National Instrument's PXI-5670/71, RF Signal Generator hardware, provides a ...
Connect a signal generator to any of the ADC inputs. Set the frequency to a 3.207GHz CW tone. The NCO is tuned to 3.2GHz. Set the amplitude to 5dBm for example. This will need to be adjusted based on cable and other RF losses. In the figure below, the signal generator output was...
1. A method of dynamically adjusting a RF generator to an instantaneous resonant frequency of a transducer comprising: providing an RF input signal from an oscillator to the RF generator; measuring a supply voltage applied to the RF generator; measuring a peak voltage in the RF generator; produc...
The quadrupole was operated at a pressure ϳ4 ϫ 10Ϫ3 Torr of background air, and was driven by an in-house- built high-Q head controlled by a function generator and an RF amplifier, 300 Vp-p at 710 kHz. Fibrinopeptide A (Sigma Chemicals, St. Louis, MO), was dissolved in ...
17. A method according to claim 14, wherein the system impedance comprises a combination of the impedances of the feed, of the cavity and of the object. 18. A method according to claim 1, wherein varying the impedance of the cavity comprises moving said object in the cavity. 19. A...
The above-described techniques may be extended for use within systems having more than two PAs, systems having more than two nonzero supply levels, systems using other types of power combiners, and/or a combination of the above. FIG. 16 is an IQ plot illustrating operation of an Asymmetric ...