Amplitude modulation utilizing a leaky wave antenna
View Patent ↗Methods and systems for amplitude modulation using a leaky wave antenna are disclosed and may include amplitude modulating an output of one or more power amplifiers in a wireless device by modulating a bias current in the power amplifiers that are coupled to one or more leaky wave antennas. The leaky wave antennas may include a balun that may be integrated on the chip, on a package to which the chip may be affixed, and/or integrated on a printed circuit board to which the chip may be affixed. An output power of the power amplifiers may be adjusted by configuring a bias voltage on the leaky wave antennas. The bias voltage may be configured utilizing a DC to DC voltage controller. The bias current may be modulated via one or more switched current sources. The switched current sources may be binary weighted and/or may be current mirrors.
1. A wireless communications device comprising:
a package having integrated therein a leaky wave antenna;
a chip affixed to said package;
a power amplifier in said chip, said power amplifier being coupled to said leaky wave antenna; and
a circuit in said chip being operable to modulate a bias current in said power amplifier, said circuit being further operable to amplitude modulate an output of said power amplifier by utilizing said modulated bias current, wherein
the leaky wave antenna is impedance matched to the power amplifier, thereby eliminating a need for matching circuitry.
2. The wireless communications device of claim 1 , wherein a balun is integrated in said package.
3. The wireless communications device of claim 1 , wherein said package comprises a ceramic package.
4. The wireless communications device of claim 1 , wherein said package comprises a printed circuit board.
5. The wireless communications device of claim 1 , further comprising:
a vibration transducer.
6. The wireless communications device of claim 1 , further comprising:
a touchscreen.
7. The wireless communications device of claim 1 , wherein said wireless communications device is configured to utilize a wireless standard selected from the group of standards consisting of GSM, CDMA, CDMA2000, WCDMA, GMS, GPRS, EDGE, WIMAX, WLAN, 3GPP, UMTS, BLUETOOTH, and ZigBee standards.
8. The wireless communications device of claim 1 , wherein said circuit is further operable to adjust an output power of said power amplifier by configuring a bias voltage on said leaky wave antenna.
9. The wireless communications device of claim 8 , wherein said circuit is operable to configure said bias voltage utilizing a DC to DC voltage controller.
10. The wireless communications device of claim 1 , wherein said circuit is operable to modulate said bias current by a switched current source.
11. The wireless communications device of claim 10 , wherein said switched current source is binary weighted.
12. The wireless communications device of claim 10 , wherein said switched current source comprises a current mirror.
13. A wireless communications device comprising:
a package having integrated therein a leaky wave antenna;
a chip affixed to said package;
a power amplifier in said chip, said power amplifier being coupled to said leaky wave antenna; and
a circuit in said chip being operable to modulate a bias current in said power amplifier, said circuit being further operable to adjust an output power of said power amplifier by configuring a bias voltage on said leaky wave antenna, wherein
the leaky wave antenna is impedance matched to the power amplifier, thereby eliminating a need for matching circuitry.
14. The wireless communications device of claim 13 , wherein a balun is integrated in said package.
15. The wireless communications device of claim 13 , further comprising:
a vibration transducer.
16. The wireless communications device of claim 13 , further comprising:
a touchscreen.
17. The wireless communications device of claim 13 , wherein said wireless communications device is configured to utilize a wireless standard selected from the group of standards consisting of GSM, CDMA, CDMA2000, WCDMA, GMS, GPRS, EDGE, WIMAX, WLAN, 3GPP, UMTS, BLUETOOTH, and ZigBee standards.
18. The wireless communications device of claim 13 , wherein said circuit is operable to configure said bias voltage utilizing a DC to DC voltage controller.
19. The wireless communications device of claim 13 , wherein said package comprises a ceramic package.
20. The wireless communications device of claim 13 , wherein said package comprises a printed circuit board.