Results 91 to 100 of about 4,766 (228)

Widely tunable multiband reconfigurable patch antenna for wireless applications [PDF]

, 2010
The official published version can be obtained from the link below - Copyright @ EuCAP 2010A design of a low profile reconfigurable microstrip patch antenna is presented. The antenna consists of four suppatches connected to one feed line, each sub-patch
AbuTarboush, HF, Al-Raweshidy, H, Budimir, D, Nasr, KM, Nilavalan, R   +4 more
core  

Design and analysis of reconfigurable filters employing varactor and PIN diodes [PDF]

Engineering and Technology Journal
This work presents a comprehensive and comparative study on reconfigurable/tunable microstrip filters, aiming to analyze and understand the impact of varactors, PIN diodes, lumped capacitors, and inductors on the overall filter performance.
Salah Mahdi, Mithaq Raheema, Raaed Hammed   +2 more
doaj   +1 more source

Low-distortion downconvertor using varactor diodes

Electronics Letters, 1978
A balanced varactor downconvertor for a 6.8 GHz input signal is described. Measured intermodulation and conversion performance are given. Compared to Schottky-diode mixers this downconvertor has a considerably higher 3rd-order intercept point.
openaire   +1 more source

Spatial Multiplexing of QPSK Signals with a Single Radio: Antenna Design and Over-the-Air Experiments

, 2016
The paper describes the implementation and performance analysis of the first fully-operational beam-space MIMO antenna for the spatial multiplexing of two QPSK streams.
Austin, Andrew C. M., Burg, Andreas, Mosig, Juan R., Perruisseau-Carrier, Julien, Yousefbeiki, Mohsen   +4 more
core   +1 more source

A varactor-tuned RF coil for nuclear quadrupole double resonance with Fast Field-Cycling MRI [PDF]

, 2014
Non peer reviewedPublisher ...
Broche, Lionel, Lurie, David John, Payne, Nicholas Roy, Ross, Peter James   +3 more
core  

Tunable Band Notched UWB Antenna With Wide Tuning Range and Notch Bandwidth Controllability

IEEE Access
An ultra-wide band (UWB) antenna employing spoof surface plasmon polariton principles is introduced, offering tunable single- and dual-band rejection. Inserting slot resonators into the SSPP feed achieves band-notching.
Somia Sharma, Rajesh Kumar Singh, Chun-Hsing Li   +2 more
doaj   +1 more source

Millimeter-wave monolithic diode-grid frequency multiplier [PDF]

, 1990
A semiconductor diode structure useful for harmonic generation of millimeter or submillimeter wave radiation from a fundamental input wave is fabricated on a GaAs substrate.
Maserjian, Joseph
core   +1 more source

A New Two-Port MIMO Filtenna With Tunable Bandwidth and Center Frequency

IEEE Access
A new two-port MIMO filtenna with center frequency and bandwidth tunability is introduced by integrating a tunable filter into the feeding section of a monopole antenna.
Alper Turkeli, Ali Kursad Gorur, Yasemin Altuncu, Adnan Gorur   +3 more
doaj   +1 more source

A Wideband Subharmonic Image-Reject Mixer With a Fixed IF Using Schottky Diodes

IEEE Journal of Microwaves
This work presents a Schottky anti-parallel diode pair (APDP)-based wideband subharmonic image-rejecting mixer (SH-IRM) with high image rejection and port-to-port isolation.
Rijubrata Pal, Mrinal Kanti Mandal
doaj   +1 more source

Progress on single barrier varactors for submillimeter wave power generation [PDF]

Theoretical work on Single Barrier Varactor (SBV) diodes, indicate that the efficiency for a multiplier has a maximum for a considerably smaller capacitance variation than previously thought. The theoretical calculations are performed, both with a simple
Groenqvist, Hans, Hjelmgren, Hans, Kollberg, Erik L., Nilsen, Svein M., Rydberg, Anders   +4 more
core   +1 more source