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[PDF] Top 20 Microwave pulse compression using a helically corrugated waveguide

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Microwave pulse compression using a helically corrugated waveguide

Microwave pulse compression using a helically corrugated waveguide

... a circularly polarised wave. The calibration planes were set to be at th e interface between the polarisers and the helical tapers. The VNA was calibrated using a 1 0-term, Line- Reflect-Line calibration that ... See full document

10

Experimental study of microwave pulse compression using a five-fold helically corrugated waveguide

Experimental study of microwave pulse compression using a five-fold helically corrugated waveguide

... first pulse compression ex- periment using the HCW was carried out on a three-fold struc- ...circular waveguide was chosen to couple with the mode to generate the oper- ating ...mode. ... See full document

7

Experimental study of microwave pulse compression using a five-fold helically corrugated waveguide

Experimental study of microwave pulse compression using a five-fold helically corrugated waveguide

... smooth waveguide can also have a relatively large mono- tonic group velocity difference over a wide frequency ...smooth waveguide, the group velocity has a large change near the cutoff frequency (shown as ... See full document

7

Dispersion of helically corrugated waveguides : analytical, numerical and experimental study

Dispersion of helically corrugated waveguides : analytical, numerical and experimental study

... high-power microwave elec- ...cylindrical waveguide, which involves both axial and azimuthal ...etc. Helically corrugated waveguides have recently been successfully used as interaction regions ... See full document

8

W-band gyro-devices using helically corrugated waveguide and cusp gun : design, simulation and experiment

W-band gyro-devices using helically corrugated waveguide and cusp gun : design, simulation and experiment

... The 3D PIC (Particle in Cell) code MAGIC was used to simulate the cusp gun. A slice through the geometry, in polar coordinates, can be seen in Fig. 1. Two solenoids are used, one with a negative polarity. The negative ... See full document

11

Broadband amplification of low-terahertz signals using axis-encircling electrons in a helically corrugated interaction region

Broadband amplification of low-terahertz signals using axis-encircling electrons in a helically corrugated interaction region

... ” microwave sources, such as traveling wave tubes and klystrons, drops dramati- cally in this frequency range due to the small cross-sectional dimensions of their beam-wave interaction ...short pulse ... See full document

5

Numerical simulation of a Gyro-BWO with a helically corrugated interaction region, cusp electron gun and depressed collector

Numerical simulation of a Gyro-BWO with a helically corrugated interaction region, cusp electron gun and depressed collector

... broadband microwave amplification to be achieved in a gyrotron traveling wave amplifier (gyro-TWA) and wide frequency tuning in a gyro-BWO without compromising interaction efficiency and output power when compared ... See full document

32

Investigation on the Microwave Pulse Signal Compression with Ngd Circuit

Investigation on the Microwave Pulse Signal Compression with Ngd Circuit

... chirped pulse amplification [7– ...ultra-short pulse through two chirped fiber Bragg gratings with different chirp rates ...a microwave pulse compressor based on a passive resonant cavity has ... See full document

17

CNC machined helically corrugated interaction region for a THz gyrotron traveling wave amplifier

CNC machined helically corrugated interaction region for a THz gyrotron traveling wave amplifier

... output from the VNA is in WR 2.2 rectangular waveguide, therefore this was converted to propagate in a circular waveg- uide, 0.70 mm in internal diameter. This was followed by a rotatable circular polarizer, then ... See full document

6

Systematic study of a corrugated waveguide as a microwave undulator

Systematic study of a corrugated waveguide as a microwave undulator

... high-power microwave sources with output powers of megawatts or more are needed to achieve a high equivalent magnetic ...high-power microwave sources normally operate in pulsed mode to reduce the power ... See full document

7

Multi-mode coupling wave theory for helically corrugated waveguide

Multi-mode coupling wave theory for helically corrugated waveguide

... the helically corrugated waveguide is as a dispersive medium for pulse ...three-fold corrugated waveguide operating in X-band was previously de- signed and was used in an ... See full document

7

Modeling and Measurement of a Zeroth-Order Resonator and a Composite Right-Left-Handed Transmission Line in Coplanar Technology

Modeling and Measurement of a Zeroth-Order Resonator and a Composite Right-Left-Handed Transmission Line in Coplanar Technology

... The proposed CRLH CPW ZOR resonator and CRLH CPW TL are fabricated on alumina substrate (ε r ≈ 10, thickness h = 635 µm). For practical application, our CRLH CPW TL is realized with five cells. The conductors are made of ... See full document

11

Pulse Signals in Open Circular Dielectric Waveguide

Pulse Signals in Open Circular Dielectric Waveguide

... the pulse surface waves we met ...dielectric waveguide there exist guided waves that are localized inside the rod and also decay exponentially off the surface (see Figure 2), these waves propagate without ... See full document

9

Terahertz and Microwave Spectroscopy of Liquids and Hydrogen Bonded Clusters

Terahertz and Microwave Spectroscopy of Liquids and Hydrogen Bonded Clusters

... other rephasing and non-rephasing 2D-TTR peaks are possible if the THz pulses can bridge the a → c transition in the generalized three-level system (Fig. 7.15). In this chapter, we implement a diamond cuvette that ... See full document

190

A Low Phase-Noise SIW Reflection Oscillator with Hexagonal Resonator

A Low Phase-Noise SIW Reflection Oscillator with Hexagonal Resonator

... In this paper, a reflection oscillator with low phase noise using a hexagonal SIW resonator is presented. The hexagonal resonator not only possesses similar resonant characteristics of circular SIW one, but also ... See full document

9

White light generation and amplification using a soliton pulse within a nano-waveguide

White light generation and amplification using a soliton pulse within a nano-waveguide

... laser pulse, which can be used to enlarge the optical bandwidth when propagating within the nonlinear micro ring ...the waveguide by a lager effective core area device, ...soliton pulse propagating ... See full document

5

Fourphase Pulse Compression Sequences Generated using Chaotic Maps

Fourphase Pulse Compression Sequences Generated using Chaotic Maps

... sequence using acoustic surface waves is reported ...sequences using biphase to quadriphase transformation ...conventional pulse coding, in particular Barker‟s and Turyn‟sbiphase sequences, the ... See full document

6

Coupling structure for a high Q corrugated cavity as a microwave undulator

Coupling structure for a high Q corrugated cavity as a microwave undulator

... THE CORRUGATED CAVITY With the analysis from the previous sections, the complete microwave undulator cavity was ...the corrugated waveguide were used in the simulation using CST ... See full document

6

Simulation of Spread Spectrum Radar Using Rake at the Receiver End

Simulation of Spread Spectrum Radar Using Rake at the Receiver End

... chosen to be either 0 or π radian. If the selection of the 0, π phase is made at random, the waveform approximates a noise modulated signal with a thumbtack ambiguity function, the output of the matched filter will be a ... See full document

11

The application of air coupled ultrasonic systems and signal processing to the interrogation of concrete

The application of air coupled ultrasonic systems and signal processing to the interrogation of concrete

... INTRODUCTION THE AIR-COUPLED EXPERIMENTAL SETUP 4.2.1 Capacitive Transducers 4.2.2 The Pulse Compression Technique 4.2.3 Simulation of the Pulse Compression Technique 4.2.4 Experimental [r] ... See full document

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