An X-band to Ka-band SPDT switch using 200 nm SiGe HBTs

2012 ◽  
Author(s):  
Chung Hang John Poh ◽  
Robert L. Schmid ◽  
John D. Cressler ◽  
John Papapolymerou
Keyword(s):  
Ka Band ◽  
X Band

One-Meter Deployable Mesh Reflector for Deep-Space Network Telecommunication at ${X}$ -Band and $Ka$ -Band

2020 ◽  
Vol 68 (2) ◽  
pp. 727-735 ◽  
Author(s):  
Nacer Chahat ◽  
Jonathan Sauder ◽  
Matthew Mitchell ◽  
Neal Beidleman ◽  
Gregg Freebury
Keyword(s):  
Deep Space ◽  
Deep Space Network ◽  
Ka Band ◽  
Space Network ◽  
X Band

scholarly journals 3D Printed Corrugated Plate Antennas With High Aperture Efficiency and High Gain at X-Band and Ka-Band

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 30643-30654 ◽  
Author(s):  
Shaker Alkaraki ◽  
Yue Gao ◽  
Samuel Stremsdoerfer ◽  
Edouard Gayets ◽  
Clive G. Parini
Keyword(s):  
High Gain ◽  
Ka Band ◽  
Aperture Efficiency ◽  
X Band ◽  
3D Printed

Networking of Tracking Radars of Two Different SAM Weapons to Protect the Missile in Intensive Jamming Environment

2017 ◽  
Vol 68 (1) ◽  
pp. 70
Author(s):  
G. Kumaraswamy Rao ◽  
Sreehari Rao ◽  
Sudhir Kumar Chaudhuri
Keyword(s):  
Missile Guidance ◽  
Ka Band ◽  
Weapon Systems ◽  
X Band ◽  
Tracking Radar

<p class="p1">Many countries including India use the Russian made SAM-3 (Pechora) surface-to-air missile (SAM) weapon systems to protect their strategic and tactical infrastructure. The mathematical computations done in this paper, conclusively prove<span class="s1">s </span>that SA-125 low-blow tracking radar of Pechora is vulnerable to jamming. A project was undertaken to overcome the jamming vulnerability of Pechora aiming to design and develop an electronic counter counter measure system. This system networked the Pechora tracking radar with a western tracking radar, Flycatcher, developed by HSA Holland. The latter radar works in a MMW band. When jamming (x band) is employed by enemy aircraft the Low blow radar failed to provide target coordinates. But the flycatcher tracking radar which is tracking in Ka band provided the tracking coordinates (after parallax correction) to the command guidance computer. This way the missile guidance is protected until missile warhead in missile blasts near the target. Extensive trials carried out with a number of aircraft sorties proved the success of this developed system against jamming.</p>

X-band and Ka-band monolithic GaAs PIN diode variable attenuation limiters

2003 ◽  
Author(s):  
D.J. Seymour ◽  
D.D. Heston ◽  
R.E. Lehmann
Keyword(s):  
Pin Diode ◽  
Ka Band ◽  
X Band

Review of Studies of Superradiative Microwave Generation in X Band and Ka Band Relativistic BWOs (Review)

2004 ◽  
Vol 32 (3) ◽  
pp. 1093-1099 ◽  
Author(s):  
A.A. Eltchaninov ◽  
S.D. Korovin ◽  
G.A. Mesyats ◽  
I.V. Pegel ◽  
V.V. Rostov ◽  
...  
Keyword(s):  
Ka Band ◽  
Microwave Generation ◽  
X Band

scholarly journals Design, Simulation and Fabrication of Multiband Antenna using HFSS

2019 ◽  
Vol 8 (2) ◽  
pp. 5851-5859
Keyword(s):  
Patch Antenna ◽  
Research Work ◽  
Microstrip Patch Antenna ◽  
Slot Antenna ◽  
Ka Band ◽  
Frequency Bands ◽  
Microstrip Patch ◽  
X Band ◽  
Ku Band ◽  
K Band

Microstrip antennas are popular because of their low profile, light weight and low cost but narrow bandwidth and gain are the main disadvantages of this antenna. In this paper Multiband Octagonal Patch Antenna has been designed by ring slot technique for working in nine different frequencies presented in multi band C-band, X-band, Ku-band, K-band, Ka-band, Q-band and U-bands. Main applications of these bands are used in terrestrial microwave communications. In this research work, the performance of octagonal patch antenna operating at 7 different bands is analyzed. The Design methodology of the proposed research carried in 2 major modules. 1. Design of Single Octagonal Ring Slot antenna, 2. Design of Double Octagonal Ring Slot antenna. In the first design a single octagonal ring slot microstrip patch antenna is developed which resonates at six frequencies of five different frequency bands of C-band, Ku-band, K-band, Q-band and U-bands. In the second design a double octagonal ring slot microstrip patch antenna is developed which resonates at nine frequencies of six different frequency bands of X-band, Ku-band, K-band, Ka-band, Q-band and U-bands. The proposed antenna has been simulated by HFSS and measured by combinational analyzer.

Design and development of Ka-band carrier generator for IRS applications

2014 ◽  
Vol 7 (6) ◽  
pp. 637-644
Author(s):  
Vabya Kumar Pandit ◽  
Chitra Ramamurthy ◽  
Sourabh Basu ◽  
Deepak V. Ingale
Keyword(s):  
Phase Noise ◽  
Frequency Synthesizer ◽  
Frequency Multiplier ◽  
Frequency Resolution ◽  
Frequency Signal ◽  
Band Frequency ◽  
Ka Band ◽  
X Band ◽  
Pll Frequency Synthesizer ◽  
Low Phase Noise

A Ka-band carrier generator using phase-locked loop (PLL) frequency synthesizer is presented in this paper. The design uses integer-N PLL chip PE83336 as the important hardware support. The key idea of generating Ka-band frequency signal with low-phase noise is to generate a high-quality X-band frequency signal using PLL frequency synthesizer and employ a frequency multiplier to deliver the high-frequency output at the desired frequency band. Experimental measurements of the frequency synthesizer demonstrate the excellent performance, which is achieved with the Ka-band output with a frequency resolution of 5.7 MHz and phase noise better than −70 dBc/Hz at 1 kHz.

scholarly journals X-Band Polarimetric and Ka-Band Doppler Spectral Radar Observations of a Graupel-Producing Arctic Mixed-Phase Cloud

2015 ◽  
Vol 54 (6) ◽  
pp. 1335-1351 ◽  
Author(s):  
Mariko Oue ◽  
Matthew R. Kumjian ◽  
Yinghui Lu ◽  
Zhiyuan Jiang ◽  
Eugene E. Clothiaux ◽  
...  
Keyword(s):  
Mixed Phase ◽  
Growth Stages ◽  
Bottom Edge ◽  
Ka Band ◽  
The Core ◽  
Low Concentrations ◽  
X Band ◽  
Spatial Sorting ◽  
Differential Reflectivity ◽  
Different Growth Stages

AbstractCharacteristics of graupel in an Arctic deep mixed-phase cloud on 7 December 2013 were identified with observations from an X-band scanning polarimetric radar and a Ka-band zenith-pointing radar in conjunction with scattering calculations. The cloud system produced generating cells and strongly sheared precipitation fall streaks. The X-band radar hemispheric RHI observables revealed spatial sorting of polarimetric signatures: decreasing (with increasing range) differential propagation phase shift φDP, negative specific differential phase KDP collocated with negative differential reflectivity ZDR in the upper half of the fall streak, and increasing or near-constant φDP with positive ZDR at the bottom edge of the fall streak. The negative KDP and ZDR, indicating prolate particles with vertically oriented maximum dimensions, were consistent with small, slow-falling conical graupel coexisting with low concentrations of more isometric graupel. The observed negative KDP values were best matched by scattering calculations for small, dense conical graupel with 30°–40° cone angles. The positive KDP and ZDR and the Doppler spectra indicate that large isometric graupel coexisted with a second population of slower-falling rimed platelike particles in the lower half of the fall streak. Through the core of the fall streak, φDP decreased in range while ZDR was slightly positive, indicating that the prolate conical graupel dominated φDP while the isometric larger graupel dominated reflectivity (and thus ZDR). These results demonstrate the capability of polarimetric observables and Doppler spectra to distinguish different growth stages of rimed particles, allowing for the improvement of hydrometeor classification methods.

X-band and Ka-band tunable devices using low-loss BST ferroelectric capacitors

2009 ◽  
Author(s):  
Kwang Choi ◽  
Stanis Courreges ◽  
Zhiyong Zhao ◽  
John Papapolymerou ◽  
Andrew Hunt
Keyword(s):  
Low Loss ◽  
Ka Band ◽  
X Band ◽  
Ferroelectric Capacitors
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