Results 91 to 100 of about 1,302 (222)

High-efficiency powerful millimeter wave varactor multiplier [PDF]

, 1996
The paper describes development and investigation of varactor doubler from input frequency 36 GHz to output 72 GHz. To increase the output power two diode balance multiplier circuit was used. The multiplier was developed for output power no less than 100
Vald-Perlov, V.M., Kosov, A.S., Zotov, V.A.   +2 more
core   +1 more source

An investigation of a varactor-diode modulator Technical report no. 3

, 1964
Low frequency modulator design using single varactor diode as switching ...
Summer, H. M.
core  

Progress in Heterostructure Barrier Varactor Frequency Multipliers

, 2000
The Heterostructure Barrier Varactor diode and its performance as a varactor frequency multiplier is ...
Dillner, Lars, Stake, Jan, Kollberg, Erik, Kollberg, Erik L., Ingvarson, Mattias   +4 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

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

Comparison of Antennas Electrical Tuning Methods for Mobile Applications

Известия высших учебных заведений России: Радиоэлектроника, 2017
The various methods of antenna electrical tuning for mobile handsets working in several LTE frequency bands are described. The PIFA-type antenna containing high and low frequency branches is proposed.
A. D. Grigoriev, B. Djalilov
doaj  

Millimeter-and submillimeter-wave multipliers using quantum-barrier-varactor (QBV) diodes

, 1990
Experimental results are presented using quantum-barrier-varactor (QBV) diodes in harmonic multipliers. Output powers and tripler conversion efficiencies of more than 2 mW and 5%, respectively, were achieved between 210 and 280 GHz. In a crude experiment,
Rydberg, Anders,, Grönqvist, Hans, Gr\uf6nqvist, Hans, Kollberg, Erik, Grönqvist, Hans,, Kollberg, Erik L., Rydberg, Anders, Kollberg, Erik,   +7 more
core   +1 more source

Characterization of GaN-based HEMTs as Varactor Diode Devices

, 2015
International audienceVaractors fabricated in 0.5 mu m and 0.15 mu m GaN HEMT technologies (National Research Council of Canada's GaN500 and GaN150 processes) are investigated.
Mohammed Himdi, Abdelaziz Hamdoun, Hamdoun, Abdelaziz, Lafond, Olivier, Langis Roy, Olivier Lafond, Himdi, Mohamed, Roy, Langis   +7 more
core   +1 more source

Analysis and design of a new reflection‐type 360° phase shifter with combined switch and varactor

, 2010
Analysis and design of a new 360° reflection type phase shifter is proposed.The new phase shifter uses a switch and one varactor device per reflective load. Equations for the analysis and design of the new phase shifter are presented.
Mirshekar‐Syahkal, D, Bulja, S
core   +1 more source