A cavity resonator coupling-type power distributor/power combiner

Claim 2

A cavity resonator coupling-type power distributor/power combiner comprising: a first conducting means having an input/output end for receiving or providing input/output signals of microwave electric power, a first cavity resonator having a symmetric shape with respect to an axis thereof and operatively resonating with a cylindrical TM 0,n,0 mode, where n is a positive integer, an electric-field coupling operatively being established between said first conducting means and said first cavity resonator through an antenna, a plurality of second cavity resonators arranged on the periphery of said first cavity resonator and extending radially and symmetrically with respect to said axis of said first cavity resonator, said second cavity resonators having the same shape and size as each other, magnetic-field coupling operatively being established between said second cavity resonators and said first cavity resonator, and a plurality of second conducting means having output/input ends, respectively for conducting output/input signals of microwave electric power between said second cavity resonators and said output/input ends of said second conducting means.

Claim 3

A cavity resonator coupling-type power distributor/power combiner as set forth in claim 1, wherein said first cavity resonator has a cylindrical shape.

Claim 4

A cavity resonator coupling-type power distributor/power combiner as set forth in claim lpr 2, wherein each of said second cavity resonators comprises a cavity formed by a waveguide, a first window formed between said first cavity resonator and said cavity, for establishing magnetic-field coupling therebetween, and a second window formed between said cavity and corresponding one of said second conducting means, for establishing electromagnetic-field coupling therebetween.

Claim 5

A cavity resonator coupling-type power distributor/power combiner as set forth in claim 3, wherein each of said second conducting means is formed by said waveguide, the size of said first window and the size of said second window being smaller than the size of the cross-sectional area of said waveguide.

Claim 6

A cavity resonator coupling-type power distributor/power combiner as set forth in claim 1 or 2, wherein each of said second cavity resonators comprises a cavity formed by a waveguide, a first set of electrically conductive posts arranged between said first cavity resonator and said cavity, for establishing magnetic-field coupling therebetween, and a second set of electrically conductive posts arranged between said cavity and corresponding one of said second conducting means, for establishing electromagnetic-field coupling therebetween.

Claim 7

A cavity resonator coupling-type power distributor/power combiner as set forth in claim 5, wherein each of said second conducting means is formed by said waveguide.

Claim 8

A cavity resonator coupling-type power distributor/power combiner as set forth in claim 1 or 2, wherein each of said second cavity resonators comprises a cavity formed by a waveguide, a window formed between said first cavity resonator and said cavity, for establishing magnetic-field coupling therebetween, and a set of electrically conductive posts arranged between said cavity and corresponding one of said second conducting means, for establishing electromagnetic-field coupling therebetween.

Claim 9

A cavity resonator coupling-type power distributor/power combiner as set forth in claim 7, further comprising a conductive line between said first cavity resonator and each of said second cavity resonators through said window, for adjusting said magnetic-field coupling.

Claim 10

A microwave power amplifier comprising a cavity resonator coupling-type power distributor and a plurality of amplifying units, having input terminals, said cavity resonator coupling-type power distributor comprising: a first conducting means having an input end for receiving input signals of microwave electric power, a first cavity resonator having a symmetric shape with respect to an axis thereof and operatively resonating with a cylindrical TM 0,n,0 mode, where n is a positive integer, an electric-field coupling operatively being established between said first conducting means and said first cavity resonator through an antenna, a plurality of second cavity resonators arranged on the periphery of said first cavity resonator and extending radially and symmetrically with respect to said axis of said first cavity resonator, said second cavity resonators having the same shape and size as each other, said second cavity resonators being magnetically coupled with said first cavity resonator, and a plurality of second conducting means having output ends connected to said input terminals of said amplifying units, respectively, for conducting output signals of microwave electric power from said second cavity resonators to said output ends of said second conducting means, said amplifying units receiving and amplifying said output signals.

Claim 11

A microwave power amplifier comprising a cavity resonator coupling-type power distributor and a plurality of amplifying units, having input terminals, said cavity resonator coupling-type power distributor comprising: a first conducting means having an input end for receiving input signals of microwave electric power, a first cavity resonator having a symmetric shape with respect to an axis thereof and operatively resonating with a cylindrical TM 0,n,0 mode, where n is a positive integer, an electric-field coupling operatively being established between said first conducting means and said first cavity resonator through an antenna, a plurality of second cavity resonators arranged on the periphery of said first cavity resonator and extending radially and symmetrically with respect to said axis of said first cavity resonator, said second cavity resonators having the same shape and size as each other, said second cavity resonators being magnetically coupled with said first cavity resonator, and a plurality of second conducting means having output ends connected to said input terminals of said amplifying units, respectively, for conducting output signals of microwave electric power from said second cavity resonators to said output ends of said second conducting means, said amplifying units receiving and amplifying said output signals.

Claim 12

1C. A microwave power amplifier comprising a plurality of amplifying units having output terminals and a cavity resonator coupling-type power combiner, said cavity resonator coupling-type power combiner comprising: a first conducting means having an output end for providing output signals of microwave electric power, a first cavity resonator having a symmetric shape with respect to an axis thereof and operatively resonating with a cylindrical TM 0,n,0 mode, where n is a positive integer, an electric-field coupling operatively being established between said first conducting means and said first cavity resonator through an antenna, a plurality of second cavity resonators arranged on the periphery of said first cavity resonator and extending radially and symmetrically with respect to said axis of said first cavity resonator, said second cavity resonators having the same shape and size from each other, said second cavity resonators being magnetically coupled with said first cavity resonator, and a plurality of second conducting means having input ends connnected to said output terminals of said amplifying units, respectively, for conducting input signals of microwave electric power from said amplifying units into said second cavity resonators through said input ends of said second conducting means.

Claim 13

1C. A microwave power amplifier comprising a plurality of amplifying units having output terminals and a cavity resonator coupling-type power combiner, said cavity resonator coupling-type power combiner comprising: a first conducting means having an output end for providing output signals of microwave electric power, a first cavity resonator having a symmetric shape with respect to an axis thereof and operatively resonating with a cylindrical TM 0,n,0 mode, where n is a positive integer, an electric-field coupling operatively being established between said first conducting means and said first cavity resonator through an antenna, a plurality of second cavity resonators arranged on the periphery of said first cavity resonator and extending radially and symmetrically with respect to said axis of said first cavity resonator, said second cavity resonators having the same shape and size from each other, said second cavity resonators being magnetically coupled with said first cavity resonator, and a plurality of second conducting means having input ends connnected to said output terminals of said amplifying units, respectively, for conducting input signals of microwave electric power from said amplifying units into said second cavity resonators through said input ends of said second conducting means.

Claim 14

A microwave power amplifier comprising a cavity resonator coupling-type power distributor, a plurality of amplifying units having input terminals and output terminals, and a cavity resonator coupling-type power combiner, said cavity resonator coupling-type power distributor comprising: a first conducting means having a first input end for receiving input signals of microwave electric power, a first cavity resonator having a symmetric shape with respect to an axis thereof and operatively resonating with a cylindrical TM 0,n,0 mode, where n is a positive integer, an electric-field coupling operatively being established between said first conducting means and said first cavity resonator through a first antenna, a plurality of second cavity resonators arranged on the periphery of said first cavity resonator and extending radially and symmetrically with respect to said axis of said first cavity resonator, said second cavity resonators having the same shape and size as each other, said second cavity resonators being magnetically coupled with said first cavity resonator, and a plurality of second conducting means having first output ends connected to said input terminals of said amplifying units, respectively, for conducting intermediate output signals of microwave electric power from said second cavity resonators to said first output ends of said second conducting means, said amplifying units receiving said intermediate output signals at said input terminals and amplifying said intermediate output signals to provide amplified signals of microwave electric power at said output terminals, said cavity resonator coupling-type power combiner comprising: a third conducting means having a second output end for providing final output signals of microwave electric power, a third cavity resonator having a symmetric shape with respect to an axis thereof and operatively resonating with a cylindrical TM 0,m,0 mode, where m is a positive integer, an electric-field coupling operatively being established between said third conducting means and said third cavity resonator through a second antenna, a plurality of fourth cavity resonators arranged on the periphery of said third cavity resonator and extending radially and symmetrically with respect to said axis of said third cavity resonator, said fourth cavity resonators having the same shape and size as each other, said fourth cavity resonators being magnetically coupled with said third cavity resonator, and a plurality of fourth conducting means having second input ends connected to said output terminals of said amplifying units, respectively, for conducting input signals of microwave electric power from said amplifying units into said fourth cavity resonators through said second input ends of said fourth conducting means.

Claim 15

A microwave power amplifier comprising a cavity resonator coupling-type power distributor, a plurality of amplifying units having input terminals and output terminals, and a cavity resonator coupling-type power combiner, said cavity resonator coupling-type power distributor comprising: a first conducting means having a first input end for receiving input signals of microwave electric power, a first cavity resonator having a symmetric shape with respect to an axis thereof and operatively resonating with a cylindrical TM 0,n,0 mode, where n is a positive integer, an electric-field coupling operatively being established between said first conducting means and said first cavity resonator through a first antenna, a plurality of second cavity resonators arranged on the periphery of said first cavity resonator and extending radially and symmetrically with respect to said axis of said first cavity resonator, said second cavity resonators having the same shape and size as each other, said second cavity resonators being magnetically coupled with said first cavity resonator, and a plurality of second conducting means having first output ends connected to said input terminals of said amplifying units, respectively, for conducting intermediate output signals of microwave electric power from said second cavity resonators to said first output ends of said second conducting means, said amplifying units receiving said intermediate output signals at said input terminals and amplifying said intermediate output signals to provide amplified signals of microwave electric power at said output terminals, said cavity resonator coupling-type power combiner comprising: a third conducting means having a second output end for providing final output signals of microwave electric power, a third cavity resonator having a symmetric shape with respect to an axis thereof and operatively resonating with a cylindrical TM 0,m,0 mode, where m is a positive integer, an electric-field coupling operatively being established between said third conducting means and said third cavity resonator through a second antenna, a plurality of fourth cavity resonators arranged on the periphery of said third cavity resonator and extending radially and symmetrically with respect to said axis of said third cavity resonator, said fourth cavity resonators having the same shape and size as each other, said fourth cavity resonators being magnetically coupled with said third cavity resonator, and a plurality of fourth conducting means having second input ends connected to said output terminals of said amplifying units, respectively, for conducting input signals of microwave electric power from said amplifying units into said fourth cavity resonators through said second input ends of said fourth conducting means.

Claim 16

A microwave power amplifier as set forth in claim 9, 10 or 11, wherein said first cavity resonator has a cylindrical shape.

Claim 17

A microwave power amplifier as set forth in claim 9, 10, 11 or 12, wherein each of said second cavity resonators comprises a cavity formed by a waveguide, a first window formed between said first cavity resonator and said cavity, for establishing magnetic-field coupling therebetween, and a second window formed between said cavity and corresponding one of said second conducting means, for establishing electromagnetic-field coupling therebetween.

Claim 18

A microwave power amplifier set forth in claim 13, wherein each of said second conducting means is formed by said waveguide, the size of said first window and the size of said second window being smaller than the size of the cross-sectional area of said waveguide.

Claim 19

A microwave power amplifier as set forth in claim 9, 10, 11 or 12, wherein each of said second cavity resonators comprises a cavity formed by a waveguide, a first set of electrically conductive posts arranged between said first cavity resonator and said cavity, for establishing magnetic-field coupling therebetween, and a second set of electrically conductive posts arranged between said cavity and corresponding one of said second conducting means, for establishing electromagnetic-field coupling therebetween.

Claim 20

A microwave power amplifier as set forth in claim 15, wherein each of said second conducting means is formed by said waveguide.

Claim 21

1/. A microwave power amplifier as set forth in claim 9, 10, 11, or 12 wherein each of said second cavity resonators comprises a cavity formed by a waveguide, a window formed between said first cavity resonator and said cavity, for establishing magnetic-field coupling therebetween, and a set of electrically conductive posts arranged between said cavity and corresponding one of said second conducting means, for establishing electromagnetic-field coupling therebetween.

Claim 22

A microwave power amplifier as set forth in claim 17, further comprising a conductive line between said first cavity resonator and each of said second cavity resonators through said window, for adjusting said magnetic-field coupling.

Claim 23

A microwave power amplifier as set forth in claim 11, wherein said first cavity resonator and said third cavity resonator have a cylindrical shape.

Claim 24

A microwave power amplifier as set forth in claim 11 or 19, wherein each of said second cavity resonators comprises a first cavity formed by a first waveguide, a first window formed between said first cavity resonator and said first cavity, for establishing magnetic-field coupling therebetween, and a second window formed between said first cavity and corresponding one of said second conducting means, for establishing electromagnetic-field coupling therebetween.

Claim 25

21 . A microwave power amplifier as set forth in claim 20, wherein each of said second conducting means is formed by said first waveguide, the size of said first window and the size of said second window being smaller than the size of the cross-sectional area of said first waveguide.

Claim 26

A microwave power amplifier as set forth in claim 20 or 21; wherein each of said fourth cavity resonators comprises a second cavity formed by a second waveguide, a third window formed between said third cavity resonator and said second cavity, for establishing magnetic-field coupling therebetween, and a fourth window formed between said second cavity and corresponding one of said fourth conducting means, for establishing electric-field or magnetic-field coupling therebetween.

Claim 27

A microwave power amplifier as set forth in claim 22, wherein each of said fourth conducting means is formed by said second waveguide, the size of said third window and the size of said fourth window being smaller than the size of the cross-sectional area of said second waveguide.

Claim 28

A microwave power amplifier as set forth in claim 11, or 19 wherein each. of- said second cavity resonators comprises a first cavity formed by a first waveguide, a first set of electrically conductive posts arranged between said first cavity resonator and said first cavity, for establishing magnetic-field coupling therebetween, and a second set of electrically conductive posts arranged between said first cavity and corresponding one of said second conducting means, for establishing electromagnetic-field coupling therebetween.

Claim 29

A microwave power amplifier as set forth in claim23 , wherein each of said second conducting means is formed by said first waveguide.

Claim 30

A microwave power amplifier as set forth in claim 24 , wherein each of said fourth cavity resonators comprises a second cavity formed by a second waveguide, a third set of electrically conductive posts arranged between said third cavity resonator and said second cavity, for establishing magnetic-field coupling therebetween, and a fourth set of electrically conductive posts arranged between said second cavity and corresponding one of said second conducting means, for establishing electromagnetic-field coupling therebetween.

Claim 31

A microwave power amplifier as set forth in claim 26, wherein each of said fourth conducting means is formed by said second waveguide.