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Compact hexa-band folded dipole antenna
A new multi-band antenna structure has been presented which is based on a folded dipole concept with nested arms and zig-zag shaped lines. The planar structure and line width allows to manufactureExpand
  • 5
Design of loop antennas and matching networks for low-noise RF receivers: analytic formula approach
A comprehensive procedure for designing loop antennas and matching networks for low-noise receivers, by using an analytical formula approach, is presented. The effective length l/sub effect/ of anExpand
  • 8
An analytical FET model including overshoot and surface effects
A new approach for physical one-dimensional FET modeling is presented, which is based on an analytical velocity overshoot approximation to simulate short-channel GaAs-MESFETs. Expand
  • 2
Order varieties generated by v-semilattices of finite width
  • P. Nevermann
  • Computer Science, Mathematics
  • Discret. Math.
  • 1 March 1985
We propose une theorie de structure pour les ensembles ordonnes basee sur les constructions de produits directs et retracts. Expand
  • 2
On the determination of quantum yield in InGaAsp double-heterostructure LED
From light-current characteristics measured on double-heterostructure in GaAsP mesa structures (λ = 1.17 μm) in a wide current range the minority-carrier recombination rates as well as the leakageExpand
  • 4
Injection luminescence decay measurement using an opto-electronically cross-correlated Ge-APD
Abstract A germanium avalanche photodiode is used in the opto-electronic cross-correlation mode for injection luminescence decay measurements. Luminescence pulses can be detected with a sensitivityExpand
Determination of the Internal Quantum Yield and of the Injection Efficiency of Bed‐Light Emitting (Al, Ga)As‐DHS Diodes
The internal quantum yield of the active layer and the efficiency of the minority-carrier injection into the active layer of red-light emitting (Al, Ga)As double heterostructure diodes are determinedExpand
  • 1
Antenna for a telecommunications device
Antenna for a telecommunications device, in particular for a mobile telecommunication device, such as mobile radio telephone (10), portable computer or handheld radio, the at least one formed by an electrical conductor antenna element for transmitting and receiving communication data has a shape adapted to a frequency band resonant frequency, wherein the radiating element (12, 15) at least partially within a housing (23) of the communication device is arranged. Expand
Simulation of temperature dependencies using a new and CAD suitable physical GaAs-MESFET model including the electron preheating effect
A new physical model for a fast simulation of short channel MESFETs is presented. New analytical approximations for the description of the velocity-overshoot are the basis of a fast physical modelExpand
  • 1
Antenne plane a large bande en f inverse
Cette invention concerne une structure d'antenne plane monobande en F inverse comprenant un element rayonnant qui presente une premiere region, et un plan de mise a la masse qui presente une secondeExpand