Power amplifying apparatus
First Claim
1. A power amplifying apparatus comprising:
- a first multi-port hybrid coupler having M input terminals and N output terminals and formed by n stages of 90°
hybrid couplers alone, the first of said stages including the number, M/2, of 90°
hybrid couplers, the nth stage including the number, 2n-1, of 90°
hybrid couplers, and the first through nth stages of said 90°
hybrid couplers being operative to distribute a signal input to any one of said M input terminals equally to said N output terminals, where N>
M, N=2n, n is an integer that is at least equal to 2, and M/2 represents an integer having any decimal value of M/2 raised to a unit;
N amplifiers connected directly to respective ones of said N output terminals of said first multi-port hybrid coupler;
a second multi-port hybrid coupler having N input terminals connected to the output sides of respective ones of said N amplifiers, said second multi-port hybrid coupler having M output terminals and being formed by n stages of 90°
hybrid couplers alone, the first stage in said second hybrid coupler including the number, 2n-1, of 90°
hybrid couplers, the nth stage in said second hybrid coupler including the number, M/2, of 90°
hybrid couplers, and the first through nth stages of said 90°
hybrid couplers of said second multi-port hybrid coupler being operative to combine the distributed signal components input to said N input terminals into one at the one of said M output terminals of said second multi-port hybrid coupler which corresponds to the one of said M input terminals of said first multi-port hybrid coupler; and
dummy loads connected to unused ones of said input and output terminals of the 90°
hybrid couplers in said first and second multi-port hybrid couplers.
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Reexamination
Accused Products
Abstract
A first multi-port hybrid coupler is formed by n2n-1 (where n is an integer equal to or greater than 2) hybrid couplers alone, which are divided into n stages, each including 2n-1 hybrid couplers. A signal input to any one of N (=2n) input terminals of the first stage is distributed equally to N output terminals of the nth stage. The N output terminals of the nth stage of the first multi-port hybrid coupler are connected to N amplifiers at the input side thereof, respectively, and the N amplifiers are connected at the output side to a second multi-port hybrid coupler. The second multi-port hybrid coupler is identical in construction with the first multi-port hybrid coupler, but its input terminals and output terminals are reverse from those of the latter and the input terminals of the second multi-port hybrid coupler are connected to the N amplifiers in an order reverse from the order of arrangement of the output terminals of the first multi-port hybrid coupler.
59 Citations
7 Claims
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1. A power amplifying apparatus comprising:
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a first multi-port hybrid coupler having M input terminals and N output terminals and formed by n stages of 90°
hybrid couplers alone, the first of said stages including the number, M/2, of 90°
hybrid couplers, the nth stage including the number, 2n-1, of 90°
hybrid couplers, and the first through nth stages of said 90°
hybrid couplers being operative to distribute a signal input to any one of said M input terminals equally to said N output terminals, where N>
M, N=2n, n is an integer that is at least equal to 2, and M/2 represents an integer having any decimal value of M/2 raised to a unit;N amplifiers connected directly to respective ones of said N output terminals of said first multi-port hybrid coupler; a second multi-port hybrid coupler having N input terminals connected to the output sides of respective ones of said N amplifiers, said second multi-port hybrid coupler having M output terminals and being formed by n stages of 90°
hybrid couplers alone, the first stage in said second hybrid coupler including the number, 2n-1, of 90°
hybrid couplers, the nth stage in said second hybrid coupler including the number, M/2, of 90°
hybrid couplers, and the first through nth stages of said 90°
hybrid couplers of said second multi-port hybrid coupler being operative to combine the distributed signal components input to said N input terminals into one at the one of said M output terminals of said second multi-port hybrid coupler which corresponds to the one of said M input terminals of said first multi-port hybrid coupler; anddummy loads connected to unused ones of said input and output terminals of the 90°
hybrid couplers in said first and second multi-port hybrid couplers. - View Dependent Claims (2, 3)
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4. A power amplifying apparatus comprising:
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a first multi-port hybrid coupler having N input terminals and N output terminals and formed by n stages of 90°
hybrid couplers alone, each of said n stages including the number, 22-1, of 90°
hybrid couplers, and the first through nth stages of the 90°
hybrid couplers being operative to distribute a signal input to any one of the N input terminals equally to the N output terminals thereof, where N=2n and n is an integer that is at least equal to 2;a second multi-port hybrid coupler having N input terminals and N output terminals and formed by n stages of 90°
hybrid couplers alone, each of said n stages of said second multi-port hybrid coupler including the number, 2n-1, of 90°
hybrid couplers, and the first through nth stages of the 90°
hybrid couplers of said second multi-port hybrid coupler being operative to combine distributed component signals input to the respective N input terminals thereof into one at one of the N output terminals thereof;N switchable phase shifters connected between the N output terminals of said first multi-port hybrid coupler and the N input terminals of said second multi-port hybrid coupler for delaying phases of the distributed signal components input thereto selectively by 0° and
180°
, whereby the input/output correspondency between the N input terminals of said first multi-port hybrid coupler and the N output terminals of said second multi-port hybrid coupler can be changed; andN amplifiers connected in series between the output sides of said N switchable phase shifters and the N input terminals of said second multi-port hybrid coupler.
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5. A power amplifying apparatus comprising:
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receiver means for receiving a signal from receiving antenna means; a first multi-port hybrid coupler having N input terminals and N output terminals and formed by n stages of 90°
hybrid couplers alone, each of said n stages including the number, 2n-1, of 90°
hybrid couplers, and the first to nth stages of the 90°
hybrid couplers distributing a signal input to any one of the N input terminals equally to the N output terminals, where N=2n and n is an integer that is at least equal to 2;switch matrix means connected between the output of said receiver means and the N input terminals of said first multi-port hybrid coupler for selectively connecting the output of said receiver means to desired ones of the N input terminals of said first multi-port hybrid coupler; N amplifiers connected to the respective N output terminals of said first multi-port hybrid coupler; and a second multi-port hybrid coupler having N input terminals connected to the respective output sides of said N amplifiers, and having N output terminals connected to N transmitting antennas, said second multi-port hybrid coupler being identical in construction with said first multi-port hybrid coupler, the N input terminals of said second multi-port hybrid coupler corresponding to the N output terminals of said first multi-port hybrid coupler in reverse order of arrangement thereof. - View Dependent Claims (6, 7)
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Specification