| US 7,592,881 B2 | ||
| Power broadband amplifier | ||
| Andreas Salomon, Unterschleissheim (Germany) | ||
| Assigned to EADS Deutschland GmbH, Ottobrunn (Germany) | ||
| Filed on Nov. 07, 2007, as Appl. No. 11/936,388. | ||
| Claims priority of application No. 10 2006 052 611 (DE), filed on Nov. 08, 2006. | ||
| Prior Publication US 2008/0136530 A1, Jun. 12, 2008 | ||
| Int. Cl. H01P 5/12 (2006.01); H03F 3/60 (2006.01) | ||
| U.S. Cl. 333—117 [333/118] | 8 Claims |
| 1. A circuit for broadband amplification comprising:
an input HF_IN;
an output HF_OUT;
a first 90° hybrid coupler connected to the input HF_IN;
a second 90° hybrid coupler connected to the output HF_OUT;
two amplifier stages connected in parallel between the first and the second 90° hybrid couplers,
wherein the 90° hybrid couplers have an operating range of 1/n octaves between a lower frequency value and an upper frequency
value, nεN\{0}, where n is an element of the natural positive whole numbers in such a way that the upper frequency value is
greater than the lower frequency range and simultaneously less than two times the value of the lower frequency range, and
the amplifier stages are transistors having a III-nitride, or SiC, or diamond basis.
|