2-20 MHZ band mixing down typr PLL frquency synthesizer.

Yurdayol, Ahmet


1-6 GHz UWB phase shifter design and implementation with surface micromachining
Tokgöz, Korkut Kaan; Çetintepe, Çaǧri; Demir, Şimşek (2012-07-02)
An Ultra-wideband (UWB), 1-to-6 GHz, 4-bit phase shifter design is presented. The proposed phase shifter utilizes lumped-element, three-stage all-pass network to achieve UWB phase characteristics. Ideal predesign of the phase shifter is done successfully by following the three-stage all-pass network design procedure described in this paper. Following the ideal predesign, circuit elements are implemented using lumped planar spiral inductors (PSIs) and Metal-Insulator-Metal (MIM) capacitors for each phase shi...
13.56 MHz Triple Mode Rectifier Circuit with Extended Coupling Range for Wirelessly Powered Implantable Medical Devices.
Engur, Yasemin; Yigit, Halil Andac; Külah, Haluk (Institute of Electrical and Electronics Engineers (IEEE), 2020-12-25)
In this work, a wide input/output range triple mode rectifier circuit operating at 13.56 MHz is implemented to power up medical implants. The proposed novel multi-mode rectifier circuit charges the load for an extended coupling range and eliminates the requirement of alignment magnets. The charging process is achieved in three different modes based on the voltage level of the received signal affected by the distance and the alignment of the inductively coupled coils. Current mode (CM) circuit is activated f...
16 kHz vlf reception and investigation of aging in a quartz crystal by phase comparison method.
Alaçakır, Ali; Department of Physics (1983)
1kW Contactless Slip Ring Design Using Series-Series Resonant Converter Topology
Polat, Hakan; Keysan, Ozan; Department of Electrical and Electronics Engineering (2021-6-24)
Slip rings are often used in wound rotor synchronous machines to supply required field excitation during rotation. They mainly consist of carbon brushes and copper rings where the power transmission is achieved by constant friction, which results in mechanical wear over time. To eliminate the contact, brushless exciters are used. However, their low-speed operation is problematic. Therefore, in this thesis, the aim is to design a contactless slip-ring with improved fault tolerance to supply the required fiel...
15 W Power Amplifier Modules Using Coaxial Waveguide Combining by Planar Probes
Suna, Gonca; Eker, Taylan; Akkul, Mustafa; Incebacak, Mustafa; Demir, Şimşek; Yliditim, Nevzat (2014-07-11)
Power combining in coaxial waveguide by printed planar probes is investigated. Combiners are designed and implemented at 8-12 GHz and 15-18 GHz. Average introduced insertion loss is measured as 0.5 dB per branch. Power amplifier modules are designed and implemented for both bands. similar to 20 W output power at 8-12 GHz and similar to 12 W output at 15-18 GHz are achieved by efficient power combining.
Citation Formats
A. Yurdayol, “2-20 MHZ band mixing down typr PLL frquency synthesizer.,” Middle East Technical University, 1978.