An Optimized Resonant-cap Ka-band IMPATT Oscillator for Broadband Communication

نویسندگان

  • L. P. Mishra
  • M. N. Mohanty
  • S. Chakraborty
  • M. Mitra
چکیده

Demand for capacity and bandwidth increasing day-by-day in the area of wireless communication. One of the solutions is the utilization of frequency bands for broadband communication that is related to satellite communication. Mostly Ka-band is used in satellite communication. In this paper, an attempt is taken to design an optimized resonant-cap Ka-band oscillator. To obtain oscillation from Kaband IMPATT device, it has been embedded in a resonant cavity for which resonant cap structure is used. From this study, it is found that the supply D.C voltage from the top of the diode provides a matching network between the diode and the load to achieve maximum power. Keeping the breakdown voltage of the IMPATT diode fixed, the variation of bias current helps for detailed study and mechanically tuning has been done with a variation of cap height, Cap diameter as well as by varying the position of the short using sliding short tuner and verified experimentally. Optimization result is made to get maximum output with maximum efficiency for an optimized cap height, diameter, and position of sliding short tuner. With these facts the work is presented difference tuning methods for the resonant cap IMPATT oscillator.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Study of Efficiency of Ka-band IMPATT Diodes and Oscillators around Optimized condition

The device efficiency of a silicon SDR (p + nn + ) IMPATT diode at Ka-band has been studied by using small signal simulation and field swing upto 50 % of the maximum dc electric field. It is found that the d.c. to r.f. conversion efficiency of the SDR IMPATT diode decreases with the increase in field swing upto 50 %, from 8.98% to 7.84%. An integrated heat sink cum resonant cap cavity has been ...

متن کامل

Study of Various Tuning properties and Injection Locking of Resonant-cap IMPATT oscillator

A coherent study of tuning properties of resonantcap IMPATT oscillator at Ka-band has been carried out by mechanical and electronic means. It is experimentally observed that output power of IMPATT oscillator passes through a maximum, with an optimum combination of cap diameter and cap height. An empirical relation is obtained between cap diameter and wavelength of the optimised resonant cap osc...

متن کامل

A Comparative Study on Optimized Bias Current Density Performance of Cubic ZnB-GaN with Hexagonal 4H-SiC Based Impatts

In this paper, a vivid simulated study has been made on 35 GHz Ka-band window frequency in order to judge and compare the DC and high frequency properties of cubic ZnB-GaN with the existing hexagonal 4H-SiC. A flat profile p+pnn+ DDR structure of impatt is chosen and is optimized at a particular bias current density with respect to efficiency and output power taking into consideration the effec...

متن کامل

A Detailed Computer Analysis of SiC And GaN Based IMPATT Diodes Operating at Ka, V And W Band

From 1965 onwards lot of developments and simulation works have been done in the field of IMPATT diode to improve its power output, efficiency and frequency range of operation using low band gap material like Si, GaAs, InP etc. In this paper a comprehensive study has been made on IMPATT diodes based on high band gap materials, GaN (Wz) and SiC (4H) operating at Ka, V and W-band respectively rel...

متن کامل

Using the Adaptive Frequency Nonlinear Oscillator for Earning an Energy Efficient Motion Pattern in a Leg- Like Stretchable Pendulum by Exploiting the Resonant Mode

In this paper we investigate a biological framework to generate and adapt a motion pattern so that can be energy efficient. In fact, the motion pattern in legged animals and human emerges among interaction between a central pattern generator neural network called CPG and the musculoskeletal system. Here, we model this neuro - musculoskeletal system by means of a leg - like mechanical system cal...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2016