| US 7,526,263 B2 | ||
| Input arrangement for a low-noise amplifier pair | ||
| Erkki Niiranen, Ii (Finland); Harri Närhi, Kempele (Finland); Jukka Puoskari, Tupos (Finland); and Pertti Koskela, Kempele (Finland) | ||
| Assigned to Filtronic Comtek Oy, Kempele (Finland) | ||
| Filed on Sep. 01, 2006, as Appl. No. 11/469,725. | ||
| Application 11/469725 is a continuation of application No. PCT/FI2005/050062, filed on Mar. 04, 2005. | ||
| Claims priority of application No. 20040433 (FI), filed on Mar. 22, 2004. | ||
| Prior Publication US 2007/0132528 A1, Jun. 14, 2007 | ||
| Int. Cl. G06F 3/033 (2006.01) | ||
| U.S. Cl. 455—130 [455/232.1; 455/334; 455/276.1] | 10 Claims |
| 1. Input arrangement for a low-noise amplifier pair in a front stage of a radio receiver, which comprises as functional units a phase shifter, a first matching circuit and a first LNA belonging to a first amplifier branch, a second matching circuit, a second LNA and a second phase shifter belonging to the second amplifier branch, a bandpass filter, a low-pass filter, a divider, wherein on transmission path of the front stage from antenna to the first and the second LNA, at least parts belonging to a first and a second functional unit are physically united to a single element to reduce attenuation caused by said transmission path and to improve matching. |