A New Temperature Compensation Method For Circular Cavity Resonator Using Low Conductivity Cooling Water System Based On Convection Heat Transfer

Nidhi Verma, Dr. Bhavana Jharia

Abstract


A novel temperature compensation method is presented, in which we used the Low Conductivity Water Cooling System. This paper, studied the temperature compensation in resonant cavities In this method, heat load and heat exchange has been measured and according to this, the mass flow rate has been maintained. Temperature compensation depends on the three major parameters- cooling area, mass flow rate, temperature of the chiller . By using these parameters, we can calculate the heat transfer from cavity to water . If we want to remove all the heat, heat load should be equal to heat transfer.

In this method, by maintaining mass flow rate, we can simply reduce the heat load. This paper gives an expression for the temperature drift of resonant frequency. Simulation results  confirms the feasibility of the proposed design approach. This temperature compensated cavity design is feasible and can substantially reduces the temperature drift of circular cavity resonator.


References


C. Wang and K. A. Zaki, “Temperature compensation of combline resonators and filters,” in IEEE MTT-S Int. Microwave Symp. Dig., vol. 3,1999, pp. 1041–1044.

Y. Hui-Wen and A. E. Atia, “Temperature characteristics of combline resonators and filters,” in IEEE MTT-S Int. Microwave Symp. Dig., vol.3, 2001, pp. 1475–1478.

S.-W. Chen, K. A. Zaki, and R. F.West, “Tunable, temperature-compensated dielectric resonators and filters,” IEEE Trans. Microwave Theory Tech., vol. 38, pp. 1046–1052, Aug. 1990.

N. McN. Alford, J. Breeze, S. J. Penn, and M. Poole, “Temperature compensated high Q and high thermal conductivity dielectrics for Ku and Ka band communications,” in IEEE icrowave Filters and Multiplexers Colloq., Ref. 2000/117, 2000, pp. 6/1–6/4.

A. Atia, "A 14-GHz high-power filter," IEEE Digest on Microwave Theory and Techniques Symposium., vol. 79, issue 1, pp. 261-261, April 1979.s

S. J. Fiedziusko, "Dual-mode dielectric resonator loaded cavity filters," IEEE Digest on Microwave Theory and Techniques Symposium., vol. 82, issue 9, pp. 1311-1316, September 1982.

S. B. Lundquist, “Temperature compensated microwave filter,”, Feb. 2,1999.

C. Wang and K. Zaki, “Temperature compensation of combine resonators and filters,” in IEEE MTT-S Int. Microwave Symp. Dig., 1999,Paper WE2C-6, pp. 1041–1044.

D. Kajfez, S. Chebolu, A. A. Kishk, and M. R. Abdul-Gaffoor, “Temperature dependence of composite microwave cavities,” IEEE Trans. Microwave Theory Tech., vol. 49, pp. 80–85, Jan. 2001.

P. Piironen, J. Mallat, and A. V. Räisänen, “Cryogenic millimeter-wave ring filter for space application,” IEEE Trans. Microwave Theory Tech., vol. 46, pp. 1257–1262, Sept. 1998.

Jilong Ju, “A Novel Configuration of Temperature Compensation in the Resonant avities”, IEEE Trans. Microwave Theory Tech., vol 52,pp. 139-143, Jan. 2004

D. J. Small and J. A. Lunn, "Temperature compensated high power bandpass filter," nited States Patent 6,232,852, March 2003.

B. F. Keats, R. R. Mansour, and R. B. Gorbet, "Design and testing of SMA temperature-compensated cavity resonators,"IEEE Transactions on Microwave Theory and Techniques., vol.2, pp. 8-13, June 2003.

Y. Wang, and Qiang Sui, "A New Temperature Compensation Method of Rectangular Waveguide Cavities," Asia-Pacific Microwave Conference Proceedings, vol. 5, December 2005.

Brain F. Keats, Rob B. Gorbet and Raafat R. Mansour, “Design and Testing of SMA Temperature-Compensated Cavity Resonators”, IEEE Trans. Microwave Theory Tech., vol. 51, pp. 2284-2289, Dec. 2003.

R.K. Rajput, "Heat And Mass Transfer".

The engineering toolbox, “ overall heat transfer coefficients for some common fluids and heat exchangers”.


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