Reduced size transmission line using capacitive loading

Details Reduced size transmission line using capacitive loading Reduced size transmission line using capacitive loading

2007-03-13

2007-03-13

Jones, Stephen E. (Department: 2817)

Wave transmission lines and networks

Long line elements and components

Including variable impedance

Reexamination Certificate

active

10990489

ABSTRACT:
A capacitively loaded multilevel transmission line network for operation at a microwave frequency f is disclosed wherein microstrip conductors are disposed over or under a uniplanar transmission line (UTL), electrically connected thereto at or near opposing ends of the UTL and coupled to portions of the UTL separated therefrom by a thin dielectric film. The microstrip conductors and the portions of the UTL coupled thereto form thin-film microstrip (TFMS) shunt stubs capacitively loading the ends of the UTL for increasing its electrical length. The present invention enables considerable size reduction of microwave circuits having uniplanar transmission lines.

REFERENCES:
patent: 4127832 (1978-11-01), Riblet
patent: 6549089 (2003-04-01), Ashoka
patent: 6674347 (2004-01-01), Maruhashi et al.
Hettak et al, “The use of uniplanar technology to reduced microwave circuit size”, Microwave Journal, May 2001.
Sakagami et al, “Reduced branch-line coupler using eight two-step stubs”, IEE Proc.- Microw. Antennas Propag., vol. 146, No. 6, Dec. 1999.
Hirota et al, “Reduced-size branch-line and rat-race hybrids for uniplanar MMIC's”, IEEE Transactions On Microwave Theory And Techniques, vol. 38, No. 3, Mar. 1990.
T. Le Nadan et al, “Optimization and miniaturization of filter/antenna multi-function module using a composite ceramic/foam substrate”, 1999 IEEE International Microwave Symposium.
J.Ph.Coupez, K.Hettak, Ch.Person, E.Rius, “Ultra Wideband Coplanar to Slotline Transition Using a Multi-Layer Multi-technology Approach”, Microwave and Optronics MIOP 97, Sindelfigen Allemagne, Mar. 1997, pp. 428-432.
K. Hettak, G.A. Morin2 and M.G. Studbbs, “A Novel Compact Multi-Layer MMIC CPW Branchline Coupler Using Thin-Film Microstrip Stub Loading at 44 GHz”, Microwave Symposium Digest, 2004 IEEE MTT-S International, pp. 327-330 vol. 1, Jun. 6, 2004.
M.Y. Lee and H.Y. Lee, “Characteristic of the Coplanar Waveguide to Microstrip Right- Angled Transition”, 2000 Asia Pacific Microwave Conference, pp. 1-3.
J.H. Lee and H.Y. Lee, “Novel Quadrature Branch-Line Coupler Using CPW-to-Microstrip Transitions”, 2000 IEEE MTT-S Digest, pp. 621-624.
W. Menzel and W. Schwab, “Compact Multilayer Filter Structures for Coplanar MMIC's”, IEEE Microwave and Guide Wave Letters, vol. 2, No. 12, Dec. 1992, pp. 497-498.

Affiliated with

Also associated with

Rating

Reduced size transmission line using capacitive loading does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Reduced size transmission line using capacitive loading, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reduced size transmission line using capacitive loading will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3721609