We realize and investigate a wavelength-flexible phase-coherent all-optical frequency-by-2 divider. Frequency division is obtained via self-phase locking in a degenerate continuous-wave (cw) optical parametric oscillator (OPO). The wavelength flexibility of the divider is based on the use of quasiphase matching (QPM) with perpendicular polarizations of the OPO output waves (type II). Mutual inj...

The purpose of my project is to design & simulate the frequency divider using ADS software. My project is totally emphasized on the IEEE 802.11 a standard. The IEEE 802.11a describes the WLAN standard. The basis of the project is the SCL (Source Coupled Logic). This thesis organization provides an overview of the evolution of digitally programmable FREQUENCY DIVIDER using CMOS technology.

This paper presents implementation of a high speed, low noise and low power frequency divider based on current mode logic and cascade connection of divide-by-2/3 cells for high division range. The proposed divider is optimized for high frequency and low power operation. Integration of the proposed divider in a frequency synthesizer is an attractive option for the ultra-low power carrier signal ...

In this paper, a design of an unequal split Wilkinson power divider (WPD), with high power split ratio, using non-uniform transmission lines (NTLs) is presented. The design is based on using NTLs in each branch of the divider instead of the conventional uniform ones. Besides the achievement of high power split ratio, the size of the designed WPD is reduced. The design procedure is presented for...

Abstract: A method for calibrating multi-decade inductive voltage dividers has been developed which makes it possible to determine both the inphase and the quadrature error for ratios of i /11, i = 1, 2, ..., 10 in the frequency range from 400 Hz to 5 kHz. Calibration is made by comparing the divider under test against a reference two-stage divider having a ratio winding with 11 identical secti...

─ A novel ultra-wideband (UWB) out-ofphase four-way power divider is presented. To achieve a division over a large frequency range, Tjunctions formed by slotlines and microstrip lines are utilized. Based on the transmission-line equivalent-circuit method, we derive the design equations of the proposed power divider. Furthermore, all measured results are in good agreement with the predicted desi...

A method used to obtain frequencies in precise ratios of 2/3 and 1/3 of the pump is described as a possible way to extend the usable range of octave-spanning optical frequency combs for frequency metrology applications. The divider is based on a selfphase locked optical parametric oscillation in a doubly resonant semi-monolithic optical cavity containing a dual-grating periodically poled lithiu...

The design of compact wideband microwave reflectometers for the purpose of inclusion in a breast cancer detection system is presented. In this system, a wideband frequency source is used to synthesize a narrow pulse via the step-frequency synthesis method. The reflectometer undertakes measurements in the frequency domain and the collected data is transformed to the time/space domain using IFFT....

This paper presents a quadrature injection locked frequency divider (ILFD) employing tunable active inductors (TAIs), which are used is to extend the locking range and to reduce die area. The CMOS ILFD is based on a new quadrature voltage-controlled oscillator (VCO) with cross-coupled switching pairs and TAI-C tanks, and was fabricated in the 0.18-μm 1P6M CMOS technology. The divide-by-2 LC-tan...

In this paper, Frequency divider by 2 circuit using D-flip-flop is done, based upon this a4/5 prescaler, 16/17 prescaler,32/33 prescalerareverified. Along with it the design of wide band multimodulus 320/321prescaler.CMOS single phase clock pre-scalar,wideband single phase clock 2/3 pre-scaler are also designed. A dynamic logic multiband flexible integer-N divider is designed which uses the wid...