US 7,482,894 B2
Radial power divider/combiner using waveguide impedance transformers
You-Sun Wu, Princeton Junction, N.J. (US); Mark Francis Smith, Franklinville, N.J. (US); and James Norman Remer, Cherry Hill, N.J. (US)
Assigned to L-3 Communications Corporation, New York, N.Y. (US)
Filed on Nov. 20, 2006, as Appl. No. 11/601,885.
Application 11/601885 is a continuation in part of application No. 11/509160, filed on Aug. 24, 2006, granted, now 7,312,673.
Application 11/509160 is a continuation of application No. 11/241002, filed on Sep. 30, 2005, granted, now 7,113,056.
Application 11/241002 is a continuation of application No. 10/773947, filed on Feb. 06, 2004, granted, now 6,982,613.
Prior Publication US 2007/0063791 A1, Mar. 22, 2007
Int. Cl. H01P 5/12 (2006.01); H03F 3/60 (2006.01)
U.S. Cl. 333—137  [333/125; 333/127; 333/136; 333/34; 330/56; 330/124 R; 330/286; 330/295] 29 Claims
OG exemplary drawing
 
7. A radial power divider/combiner comprising:
a base having a center and a periphery;
a waveguide the extends along a direction between the center of the base and the periphery thereof, wherein the waveguide is defined at least in part by a groove in the base;
wherein (i) the waveguide has a central portion proximate the center of the base, a peripheral portion proximate the periphery of the base, and a transformer portion disposed between the central portion and the peripheral portion, (ii) the central portion has a first height, (iii) the peripheral portion has a second height that is less than the first height, (iv) the transformer portion has a third height that is less than the first height and greater than the second height, and (v) the waveguide has a constant width along the central, transformer, and peripheral portions thereof;
a first monopole antenna disposed near the center of the base; and
a second monopole antenna near a peripheral end of the waveguide;
wherein the waveguide is adapted to carry signals between the first antenna and the second antenna.