up to 2 GHz
RF Double Balanced UP-Conversion Mixer at 2.4 GHz Frequency
... setting up various benchmarks and because of vast increment in the applications of wireless communication devices the demand of ...2.4 GHz up conversion mixer has been ...the UP conversion ...
7
Design and Characterization of a 5 2 GHz/2 4 GHz Fractional Frequency Synthesizer for Low Phase Noise Performance
... 1 GHz, and thus the LO frequencies are offset from the WLAN frequency ...LO up or down will im- prove or degrade the phase noise by the ratio the center fre- quency is ...
11
Measuring Complex Permeability of Ferromagnetic Thin Film Up to 10 GHz
... 1.7 GHz when the thin film is loaded in the fixture (no matter the thin film placed upwards or ...7.2 GHz, the magnitude of S 11 drops remarkably only when the thin film is placed upwards, which is caused ...
7
Recent progress of RF-dominated experiments on EAST
... 4.6 GHz and 2.45 GHz lower hybrid current drive (LHCD) systems, H-mode can be obtained and maintained at relatively high density, even up to ne ~ ...
6
Study of off-axis current drive using EC top-launch in KSTAR
... 105/140 GHz gyrotrons and two 170 GHz gyrotrons with 1 MW output power ...and up-shift vertical launch in terms of launch angle tolerance and current drive ...
5
Second Harmonic 110 GHz ECH-assisted Start-up in KSTAR
... Present tokamaks and future reactor devices with superconducting poloidal field coils and thick vacuum vessel well have a limited toroidal electric field which is too low reliably to achieve ohmic start-up [1]. In ...
6
A Broadband Dual-Inflection Point RF Predistortion Linearizer Using Backward Reflection Topology
... It can be deduced from Fig. 5(a) that the gain characteristic first shows a compression of −0.18 dB and then an expansion up to 1.17 dB giving a total dynamic characteristics of 1.35 dB. By comparing the Fig. 4(a) ...
14
Electron Bernstein Waves at the WEGA Stellarator Heating and Emission
... can be expected for a flat density profile. The sniffer probe detects a value well above the noise level indicating the ex- istence of a significant level of non-absorbed 28 GHz stray radiation. The central ...
5
The Southern H Ⅱ Region Discovery Survey I: the Bright Catalog
... We are now completing the third generation of RRL surveys of H II regions. This generation is motivated by two great advancements in the fi eld: ( 1 ) deep all-sky infrared surveys, which are sensitive to the thermal dust ...
19
A fast vectorial network analyser for frequencies up to 4 GHz
... A comparison between a conventional and the fast network analyser was done to demonstrate the functionality of the fast network analyser. For the comparison a commercial net- work analyser (ZVR) was used. First, a ...
5
Simulation Modeling on Dispersion Shaping and Harmonic Suppression in Helix TWT from 2 GHz to 6 GHz
... MPM is a novel microwave power source, which consists of the solid state amplifier, miniaturized vacuum TWT and high-voltage switch power conditioner [1]. The three major parts make up the standardized RF power ...
13
Ultra Wideband Microstrip Diamond Slotted Patch Antenna with Enhanced Bandwidth
... 2.01 GHz to 18.67 GHz. However, the frequency region between 4.08 GHz to ...4.7 GHz falls in S11 above –10 ...shifted up compared to the simulated result, due to the loss in the SMA ...
7
Design of new combined antenna for dual polarization using crossed dipole at 2 23 GHZ and 5 GHZ
... 2.23 GHz, with this results we can see that our goal are obtained with this simulation, the antenna designed have two polarization, the linear polarization at ...5.14 GHz with comparing, of maximum gain in ...
5
A Polarization-Dependent Mutiband Ram Design
... AF 2 = e j(kx−ky)d/2 + e j(−kx+ky)d/2 (5) Next, a PDM-RAM is proposed, which utilizes a 4 × 4 PDMAMC to fill in the AMC ...a 2 × 2 array as depicted in ...(5.16 GHz, 9.98 ...
8
Wideband Frequency Selective Surface with a Sharp Band Edge Based on Mushroom-Like Cavity
... Abstract—A wideband frequency selective surface (FSS) with a sharp band edge is proposed. The periodic cell includes a mushroom-like cavity and four L-type slots etched on the top and bottom conductor claddings of the ...
6
A Miniaturized Quasi-Self-Complementary UWB Antenna with Band-Rejection Characteristic
... 3.6 GHz IEEE 802.11y Wireless Local Area Networks (WLAN) (3.6575–3.69 GHz), ...4.9 GHz public safety WLAN (4.94–4.99 GHz) and 5 GHz IEEE ...(5.15–5.35 GHz, 5.25–5.35 GHz, ...
6
Design of Dual Band Notch UWB Monopole Antenna Using Dual-Arm Spiral Resonator
... The proposed structure gives a better performance than the structure reported with four EBG cells [12]. The DASR are optimized using transmission line model (Figure 1(a)), and its return loss characteristic is shown in ...
7
Six Ways to Dress Up QLACs
... So far, the most popular (but not the only) hook for selling QLACs is as a tool for postponing RMDs and taxes on up to $125,000 in qualified money until as late as age 85, especially for healthy people who don’t ...
6
History and Advancement of the Family of Log Periodic Toothed Planer Microstrip Antenna
... 13.0295 GHz to 13.9 GHz the input VSWR is lesser than two (VSWR < ...11.025 GHz to 13.9 GHz the input VSWR is lesser than two (VSWR < ...10.5 GHz to 16.3 GHz the input VSWR ...
6
Designing of Wideband Microstrip Patch Antennas at 2 4 GHz
... b The loading of the surface of the printed element with slots of appropriate shape Antenna array used for worldwide interoperability for microwave access WiMAX and wireless local area n[r] ...
5