| US 7,493,144 B2 | ||
| Multi-element phased array transmitter with LO phase shifting and integrated power amplifier | ||
| Arun Natarajan, Pasadena, Calif. (US); Abbas Komijani, Los Angeles, Calif. (US); and Seyed Ali Hajimiri, Pasadena, Calif. (US) | ||
| Assigned to California Institute of Technology, Pasadena, Calif. (US) | ||
| Filed on Jul. 16, 2007, as Appl. No. 11/778,419. | ||
| Application 11/778419 is a continuation of application No. 11/241875, filed on Sep. 29, 2005, granted, now 7,260,418, filed on Aug. 21, 2007. | ||
| Claims priority of provisional application 60/614390, filed on Sep. 29, 2004. | ||
| Prior Publication US 2008/0058019 A1, Mar. 06, 2008 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. H04B 1/38 (2006.01); H04M 1/00 (2006.01) | ||
| U.S. Cl. 455—562.1 [455/101; 455/103; 375/299] | 18 Claims |
| 1. An N-element phased-array transmitter comprising:
an input for a local oscillator supplying a plurality of M phases, wherein each element of the phased-array transmitter further
comprises:
a pair of phase selectors each operative to select one of an in-phase and a quadrature phase from among said M-supplied phases
of said local oscillator and to supply the selected phases as output signals;
a pair of RF mixers each associated with a different one of the pair of phase selectors and each operative to receive the
output signals supplied by its associated phase selectors and to generate a corresponding pair of RF signals using IF signals;
a driver operative to receive and process the generated RF signals supplied by the mixers; and
an amplifier operative to amplify the RF signal processed by the driver.
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