Phased-Array Antenna Filter and Diplexer for a Super Economical Broadcast System
First Claim
1. A phased-array antenna filter and diplexer for a cellular communication system, comprising:
- a signal divider tee diplexer including a tee branch point, an antenna port, a transmit port and a receive port;
a receive filter including a flat, multi-pole bandpass filter, an input port and an output port, the input port coupled to the diplexer receive port to define a receive signal path, from the tee branch point to the receive input port, having a length of approximately one quarter receive wavelength; and
a transmit filter including a folded, multi-pole bandpass filter, an input port and an output port, the output port coupled to the diplexer transmit port to define a transmit signal path, from the tee branch point to the transmit output port, having a length of approximately one quarter transmit wavelength.
2 Assignments
0 Petitions
Accused Products
Abstract
A phased-array antenna filter and diplexer for a super economical broadcast system are provided. The filter and diplexer includes a signal divider tee diplexer, a receive filter and a transmit filter. The diplexer includes a tee branch point, an antenna port, a transmit port and a receive port. The receive filter includes a flat, multi-pole bandpass filter, an input port and an output port, where the input port is coupled to the diplexer receive port to define a receive signal path, from the tee branch point to the receive input port, that has a length of approximately one quarter receive wavelength. The transmit filter includes a folded, multi-pole bandpass filter, an input port and an output port, where the output port is coupled to the diplexer transmit port to define a transmit signal path, from the tee branch point to the transmit output port, that has a length of approximately one quarter transmit wavelength.
243 Citations
18 Claims
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1. A phased-array antenna filter and diplexer for a cellular communication system, comprising:
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a signal divider tee diplexer including a tee branch point, an antenna port, a transmit port and a receive port; a receive filter including a flat, multi-pole bandpass filter, an input port and an output port, the input port coupled to the diplexer receive port to define a receive signal path, from the tee branch point to the receive input port, having a length of approximately one quarter receive wavelength; and a transmit filter including a folded, multi-pole bandpass filter, an input port and an output port, the output port coupled to the diplexer transmit port to define a transmit signal path, from the tee branch point to the transmit output port, having a length of approximately one quarter transmit wavelength. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A phased-array antenna filter and diplexer for a cellular communication system, comprising:
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a signal divider tee diplexer including a common leg having an antenna port, a transmit leg having a transmit port, a receive leg having a receive port, and a tee branch point disposed at the junction of the common, receive and transmit legs; a receive filter including a maximally-flat 7-pole bandpass filter, an input port and an output port, the input port coupled to the diplexer receive port to define a receive signal path, from the tee branch point to the receive input port, having a length of approximately one quarter receive wavelength; and a transmit filter including a folded 6-pole bandpass filter, an input port and an output port, the output port coupled to the diplexer transmit port to define a transmit signal path, from the tee branch point to the diplexer transmit port, having a length of approximately one quarter transmit wavelength, wherein the transmit leg of the diplexer appears as an open circuit to signals at the frequency range of the receiver, and wherein the receive leg of the diplexer appears as an open circuit to signals at the frequency range of the transmitter.
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Specification